Outputs (176)

Thermal Design of an Integrated Inductor for 45kW Aerospace Starter-Generator (2020)
Conference Proceeding
Rocca, A. L., Khowja, M. R., Vakil, G., Gerada, C., & Wheeler, P. (2020). Thermal Design of an Integrated Inductor for 45kW Aerospace Starter-Generator

This paper presents a combined electromagnetic and thermal design of integrated inductor, for the application of a 45kW aircraft starter-generator. The inductor is designed at high current density by using the apporach ofarea product, followed by the... Read More about Thermal Design of an Integrated Inductor for 45kW Aerospace Starter-Generator.

Active and Reactive Power Control based on Predictive Voltage Control in a Six-Phase Generation System using Modular Matrix Converters (2020)
Conference Proceeding
Toledo, S., Ayala, M., Maqueda, E., Gregor, R., Renault, A., Rivera, M., …Wheeler, P. (2020). Active and Reactive Power Control based on Predictive Voltage Control in a Six-Phase Generation System using Modular Matrix Converters. In Proceedings: 2020 IEEE International Conference on Industrial Technology (ICIT) (1059-1065). https://doi.org/10.1109/ICIT45562.2020.9067285

Renewable energy generation systems under distributed generation frame emerges as a plausible solution for nowadays growing world energy demands. In this context multiphase wind generation systems are a feasible option that consist of renewable AC so... Read More about Active and Reactive Power Control based on Predictive Voltage Control in a Six-Phase Generation System using Modular Matrix Converters.

Predictive Voltage Control Operating at Fixed Switching Frequency of a Neutral-Point Clamped Converter (2019)
Conference Proceeding
Herrera, F., Cárdenas, R., Rivera, M., Riveros, J. A., & Wheeler, P. (2019). Predictive Voltage Control Operating at Fixed Switching Frequency of a Neutral-Point Clamped Converter

Uninterruptible power supply units are system formed by power electronics converters to supply sinusoidal voltages to feed critical loads. In this paper, a fixed switching frequency model predictive control strategy is presented for the control of th... Read More about Predictive Voltage Control Operating at Fixed Switching Frequency of a Neutral-Point Clamped Converter.

Multi-modular scalable DC-AC power converter for current injection to the grid based on predictive voltage control (2019)
Conference Proceeding
Toledo, S., Rivera, M., Maqueda, E., Ayala, M., Pacher, J., Romero, C., …Wheeler, P. (2019). Multi-modular scalable DC-AC power converter for current injection to the grid based on predictive voltage control

Increasing world electrical energy demand make necessary to develop new efficient and reliable schemes for power injection to the existing grid under distributed generation frames. In this work a novel DC-AC control scheme is proposed, which is based... Read More about Multi-modular scalable DC-AC power converter for current injection to the grid based on predictive voltage control.

Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting (2019)
Conference Proceeding
Khera, F. A., Wheeler, P. W., & Klumpner, C. (2019). Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting

This paper proposes the integration of a Z-source network with the modular multilevel converter (MMC) to add voltage boosting capability to a voltage step down converter. To limit the increase in complexity, the proposed Z-source modular multilevel c... Read More about Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting.

Modulated Model Predictive Current Control for PMSM Operating With Three-level NPC Inverter (2019)
Conference Proceeding
Wang, Q., Rivera, M., Riveros, J. A., & Wheeler, P. (2019). Modulated Model Predictive Current Control for PMSM Operating With Three-level NPC Inverter

In finite control set model predictive control (FCS-MPC) strategy only one basic voltage vector is to be selected in per periodic time, which causes big current ripple as well as the torque ripple of permanent magnet synchronous motor (PMSM). To solv... Read More about Modulated Model Predictive Current Control for PMSM Operating With Three-level NPC Inverter.

Reliability Analysis of aircraft starter generator drive converter (2019)
Conference Proceeding
Harikumaran, J., Buticchi, G., Galea, M., Costabeber, A., & Wheeler, P. (2019). Reliability Analysis of aircraft starter generator drive converter. In 2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP SPEC)

Under the more electric aircraft (MEA) theme, many aircraft systems are being electrified. In a previous research work, an electric starter generator system for aircrafts was implemented. This paper presents the reliability of the drive converter-a 3... Read More about Reliability Analysis of aircraft starter generator drive converter.

Predictive Voltage Control of the Direct Matrix Converter applied to Grid Current Injection (2019)
Conference Proceeding
Toledo, S., Rivera, M., Dragicevic, T., Caballero, D., Wheeler, P., & Gregor, R. (2020). Predictive Voltage Control of the Direct Matrix Converter applied to Grid Current Injection. In 2019 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)https://doi.org/10.1109/CHILECON47746.2019.8987518

Predictive control applied to direct matrix converter provide a feasible option to control the output voltage of a generation system with good performance. In this work a predictive voltage control strategy is proposed as the inner loop control of an... Read More about Predictive Voltage Control of the Direct Matrix Converter applied to Grid Current Injection.

Trade-off Study of a High Power Density Starter-Generator for Turboprop Aircraft System (2019)
Conference Proceeding
Khowja, M. R., Vakil, G., Gerada, C., Yang, T., Bozhko, S., & Wheeler, P. (2019). Trade-off Study of a High Power Density Starter-Generator for Turboprop Aircraft System. In Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (1435-1440). https://doi.org/10.1109/IECON.2019.8926961

Mechanically-driven actuators, compressors and pumps are being replaced by the aircraft manufacturers that shift the trend towards 'More Electric Aircraft' and hence reducing the mechanical linkages within the aircraft system. This elevates the depen... Read More about Trade-off Study of a High Power Density Starter-Generator for Turboprop Aircraft System.

Fast and Accurate Multi-Physics Model for Optimization-based Design of VSBBC (2019)
Conference Proceeding
Cheong, B., Giangrande, P., Zhang, X., Galea, M., Zanchetta, P., & Wheeler, P. (2019). Fast and Accurate Multi-Physics Model for Optimization-based Design of VSBBC. In IECON Proceedings 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (1762-1767). https://doi.org/10.1109/IECON.2019.8927694

The development and validation of an advanced two-level Voltage Source Back-to-Back Converter model, considering its multi-physics operation, is presented in this paper. Based on a set of input parameters, the proposed model evaluates the converter i... Read More about Fast and Accurate Multi-Physics Model for Optimization-based Design of VSBBC.

A Fast Diagnosis Method for Both IGBT Faults and Current Sensor Faults in Grid-Tied Three-Phase Inverters With Two Current Sensors (2019)
Journal Article
Li, Z., Wheeler, P., Watson, A., Costabeber, A., Wang, B., Ren, Y., …Ma, H. (2020). A Fast Diagnosis Method for Both IGBT Faults and Current Sensor Faults in Grid-Tied Three-Phase Inverters With Two Current Sensors. IEEE Transactions on Power Electronics, 35(5), 5267-5278. https://doi.org/10.1109/tpel.2019.2946692

© 1986-2012 IEEE. This article considers fault detection in the case of a three-phase three-wire (3P3W) inverter, when only two current sensors are used to save cost or due to a faulty current sensor. With two current sensors, there is no current met... Read More about A Fast Diagnosis Method for Both IGBT Faults and Current Sensor Faults in Grid-Tied Three-Phase Inverters With Two Current Sensors.

A Nonintrusive IGBT Open-Circuit Fault and Current Sensor Fault Diagnosis Method for Grid-Tied Three-phase Three-Wire Inverter with Two Current Sensors (2019)
Conference Proceeding
Li, Z., Wheeler, P., Watson, A., Costabeber, A., Bai, Z., Zhang, X., …Ma, H. (2019). A Nonintrusive IGBT Open-Circuit Fault and Current Sensor Fault Diagnosis Method for Grid-Tied Three-phase Three-Wire Inverter with Two Current Sensors. In 2019 IEEE Energy Conversion Congress and Exposition (ECCE) (2963-2967). https://doi.org/10.1109/ECCE.2019.8912813

© 2019 IEEE. In some cases, only two current sensors are available in three-phase three-wire (3P3W) inverters. This occurs when one of three sensors is faulty, or the inverter is equipped with only two sensors to save cost. There has been no method a... Read More about A Nonintrusive IGBT Open-Circuit Fault and Current Sensor Fault Diagnosis Method for Grid-Tied Three-phase Three-Wire Inverter with Two Current Sensors.

A Novel Virtual Space Vector Modulation Scheme for Three-Level NPC Power Converter with Neutral-Point Voltage Balancing and Common-Mode Voltage Reduction for Electric Starter/Generator System in More-Electric-Aircraft (2019)
Conference Proceeding
Guo, F., Yang, T., Bozhko, S., & Wheeler, P. (2019). A Novel Virtual Space Vector Modulation Scheme for Three-Level NPC Power Converter with Neutral-Point Voltage Balancing and Common-Mode Voltage Reduction for Electric Starter/Generator System in More-Electric-Aircraft. In 2019 IEEE Energy Conversion Congress and Exposition (ECCE) (1852-1858). https://doi.org/10.1109/ECCE.2019.8913186

In recent years, More-Electric-Aircraft (MEA) becomes the state-of-the-art. One of the essential issue need to be solved is neutral-point (NP) voltage drift in three-level neutral-point-clamped (3L-NPC) power converter because of low power factor (PF... Read More about A Novel Virtual Space Vector Modulation Scheme for Three-Level NPC Power Converter with Neutral-Point Voltage Balancing and Common-Mode Voltage Reduction for Electric Starter/Generator System in More-Electric-Aircraft.

Fast and Accurate Model for Optimization-based Design of Fractional-Slot Surface PM Machines (2019)
Conference Proceeding
Cheong, B., Giangrande, P., Zhang, X., Galea, M., Zanchetta, P., & Wheeler, P. (2019). Fast and Accurate Model for Optimization-based Design of Fractional-Slot Surface PM Machines. In 2019 22nd International Conference on Electrical Machines and Systems (ICEMS) (1-6). https://doi.org/10.1109/ICEMS.2019.8921605

This paper presents the development and validation of a fast, accurate, and high dimensional Multiphysics analytical model for the optimization-based design of fractional-slot surface permanent magnet (PM) machines. The approach is non-iterative and... Read More about Fast and Accurate Model for Optimization-based Design of Fractional-Slot Surface PM Machines.

Challenges of the optimization of a high-speed induction machine for naval applications (2019)
Journal Article
Buticchi, G., Gerada, D., Alberti, L., Galea, M., Wheeler, P., Bozhko, S., …Gerada, C. (2019). Challenges of the optimization of a high-speed induction machine for naval applications. Energies, 12(12), Article 2431. https://doi.org/10.3390/en12122431

In several industrial sectors, induction machines are being replaced with permanent magnet based alternatives, owing to the potential for higher power density and efficiency. However, high-speed applications feature a wide flux-weakening region, wher... Read More about Challenges of the optimization of a high-speed induction machine for naval applications.

Model-Predictive-Control for Dual-Active-Bridge Converters Supplying Pulsed Power Loads in Naval DC Micro-grids (2019)
Journal Article
Chen, L., Shao, S., Xiao, Q., Tarisciotti, L., Wheeler, P. W., & Dragicevic, T. (2019). Model-Predictive-Control for Dual-Active-Bridge Converters Supplying Pulsed Power Loads in Naval DC Micro-grids. IEEE Transactions on Power Electronics, 35(2), 1957-1966. https://doi.org/10.1109/TPEL.2019.2917450

Pulsed-Power-Loads (PPLs) are becoming prevalent in medium-voltage naval DC micro-grids. To alleviate their effects on the system, energy storages are commonly installed. For optimal performance, their interface converters need to have fast dynamics... Read More about Model-Predictive-Control for Dual-Active-Bridge Converters Supplying Pulsed Power Loads in Naval DC Micro-grids.

A Dual-Channel Enhanced Power Generation Architecture with Back-to-back Converter for MEA Application (2019)
Conference Proceeding
Lang, X., Yang, T., Enalou, H. B., Li, C., Bozhko, S., & Wheeler, P. (2019). A Dual-Channel Enhanced Power Generation Architecture with Back-to-back Converter for MEA Application. In Proceedings of 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (1392-1397). https://doi.org/10.1109/IEMDC.2019.8785095

This paper presents a new electricity power generation architecture for the engine system of more electric aircraft (MEA). A starter/generator (SG) is connected to high-pressure (HP) spool, and a generator is attached to low-pressure (LP) spool. Thei... Read More about A Dual-Channel Enhanced Power Generation Architecture with Back-to-back Converter for MEA Application.

Phase-shift-modulation for a current-fed isolated DC-DC converter in more electric aircraft (2018)
Journal Article
Chen, L., Tarisciotti, L., Costabeber, A., Guan, Q., Wheeler, P., & Zanchetta, P. (2019). Phase-shift-modulation for a current-fed isolated DC-DC converter in more electric aircraft. IEEE Transactions on Power Electronics, 34(9), 8528-8543. https://doi.org/10.1109/tpel.2018.2889861

A Phase-Shift-Modulation (PSM) technique is proposed for an Active-Bridge-Active-Clamp (ABAC) topology. This topology is aimed for high power more-electric-aircraft applications. The proposed PSM has a complete switching harmonics cancellation on the... Read More about Phase-shift-modulation for a current-fed isolated DC-DC converter in more electric aircraft.

An Enhanced Power Generation Centre for More Electric Aircraft Applications (2018)
Conference Proceeding
Lang, X., Yang, T., Enalou, H. B., Bozhko, S., & Wheeler, P. (2018). An Enhanced Power Generation Centre for More Electric Aircraft Applications. In Proceedings - 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/esars-itec.2018.8607688

© 2018 IEEE. The more-electric aircraft (MEA) concept has become a major trend due to its multiple advantages. Many functions which are conventionally driven by pneumatic, hydraulic and mechanical power systems are replaced by electrical ones onboard... Read More about An Enhanced Power Generation Centre for More Electric Aircraft Applications.

Thermal Analysis of High Power High Voltage DC Solid State Power Controller (SSPC) for Next Generation Civil Tilt Rotor-craft (2018)
Conference Proceeding
Adhikari, J., Yang, T., Zhang, J., Rashed, M., Bozhko, S., & Wheeler, P. (2018). Thermal Analysis of High Power High Voltage DC Solid State Power Controller (SSPC) for Next Generation Civil Tilt Rotor-craft. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/ESARS-ITEC.2018.8607314

This paper explores different possible topologies of a high-power high-voltage bidirectional DC solid state power controller (SSPC) for aerospace applications. The most suitable topology is then selected for design and implementation of the SSPC. A d... Read More about Thermal Analysis of High Power High Voltage DC Solid State Power Controller (SSPC) for Next Generation Civil Tilt Rotor-craft.

Reliability Analysis of SiC MOSFET Power Module for More Electric Aircraft Motor Drive Applications (2018)
Conference Proceeding
O'Donnell, S., Wheeler, P., & Castellazzi, A. (2018). Reliability Analysis of SiC MOSFET Power Module for More Electric Aircraft Motor Drive Applications. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-4). https://doi.org/10.1109/esars-itec.2018.8607615

This paper presents a reliability study on a Microsemi 5 kVA Integrated Power Solutions (IPS) module designed to drive an electrical motor in a More Electric Aircraft actuation system. The measures taken in the design of the product and the reliabili... Read More about Reliability Analysis of SiC MOSFET Power Module for More Electric Aircraft Motor Drive Applications.

3L-NPC AC-DC power converter using virtual space vector PWM with optimal switching sequence based on G-h coordinate (2018)
Conference Proceeding
Guo, F., Yang, T., Bozhko, S., & Wheeler, P. (2018). 3L-NPC AC-DC power converter using virtual space vector PWM with optimal switching sequence based on G-h coordinate. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

An active modulation scheme to boost voltage utilisation of the dual converter with a floating bridge (2018)
Journal Article
Huang, Z., Yang, T., Wheeler, P., Galea, M., Giangrande, P., & Chowdhury, S. (2019). An active modulation scheme to boost voltage utilisation of the dual converter with a floating bridge. IEEE Transactions on Industrial Electronics, 66(7), 5623-5633. https://doi.org/10.1109/TIE.2018.2873539

This paper proposes a capacitor voltage regulation method for the dual converter with a floating bridge for aerospace applications. This topology has previously been reported, but with a constrained voltage utilisation factor due to the need for capa... Read More about An active modulation scheme to boost voltage utilisation of the dual converter with a floating bridge.

Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection (2018)
Conference Proceeding
Li, C., Yang, T., Bozhko, S., & Wheeler, P. (2018). Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection. In Proceedings - 2018 IEEE Energy Conversion Congress and Exposition (ECCE) (6996-7002). https://doi.org/10.1109/ECCE.2018.8557537

DC-link neutral point voltage balancing for three level neutral point clamped converters has been extensively investigated. Many effective methods have been reported with desirable performances under high power factor conditions. However, most of the... Read More about Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection.

A novel immense configurations of boost converter for renewable energy application (2018)
Conference Proceeding
Maroti, P. K., Padmanaban, S., Blaabjerg, F., Ionel, D., & Wheeler, P. (2018). A novel immense configurations of boost converter for renewable energy application

A three immense configurations of boost converter for renewable energy application is presented in the paper. The Voltage Lift Switched Inductor (VLSI) structure is pledge to extra high voltage conversion. The proposed work represent the modified hig... Read More about A novel immense configurations of boost converter for renewable energy application.

Vector control of a modular multilevel matrix converter operating over the full output-frequency range (2018)
Journal Article
Diaz, M., Cardenas, R., Espinoza, M., Hackl, C. M., Rojas, F., Clare, J. C., & Wheeler, P. (2019). Vector control of a modular multilevel matrix converter operating over the full output-frequency range. IEEE Transactions on Industrial Electronics, 66(7), 5102-5114. https://doi.org/10.1109/tie.2018.2870367

The Modular Multilevel Matrix Converter ( M 3 C ) is an ac-to-ac converter topology suitable for the control of high-power variable-speed drives. The control of this converter is complex, particularly when the two ac system frequencies are similar o... Read More about Vector control of a modular multilevel matrix converter operating over the full output-frequency range.

New inverting modified CUK converter configurations with switched inductor (MCCSI) for high-voltage/low-current renewable applications (2018)
Conference Proceeding
Maroti, P. K., Padmanaban, S., Bhaskar, M. S., Blaabjerg, F., & Wheeler, P. (2018). New inverting modified CUK converter configurations with switched inductor (MCCSI) for high-voltage/low-current renewable applications.

Inverting Modified CUK Converter with Switched Inductor (MCCSI) configurations are articulated in the paper for high-voltage and low-current renewable energy applications. Based on the Switched Inductor (SI) position in MCC converter, four new modifi... Read More about New inverting modified CUK converter configurations with switched inductor (MCCSI) for high-voltage/low-current renewable applications.

A comparison of modulation techniques for three-phase quasi Z-source modular multilevel converter able to provide DC-link fault blocking capability (2018)
Presentation / Conference
Khera, F. A., Klumpner, C., & Wheeler, P. W. (2018, September). A comparison of modulation techniques for three-phase quasi Z-source modular multilevel converter able to provide DC-link fault blocking capability. Paper presented at EPE'18 ECCE Europe - 20th European Conference on Power Electronics and Applications

Future transmission and distribution grids will use power converters to enable interface with HVDC systems and the Modular Multilevel Converter (MMC) is a topology that is already employed in commercial systems. The MMC converter inherent the benefit... Read More about A comparison of modulation techniques for three-phase quasi Z-source modular multilevel converter able to provide DC-link fault blocking capability.

An Improved Multistage Switched Inductor Boost Converter (Improved M-SIBC) for Renewable Energy Applications: A key to Enhance Conversion Ratio (2018)
Conference Proceeding
Bhaskar, M. S., Padmanaban, S., Blaabjerg, F., & Wheeler, P. W. (2018). An Improved Multistage Switched Inductor Boost Converter (Improved M-SIBC) for Renewable Energy Applications: A key to Enhance Conversion Ratio. In 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL) (1-6). https://doi.org/10.1109/COMPEL.2018.8459958

In this article, an improved Multistage Switched Inductor (M-SI) based power converter or Improved Multistage Switched Inductor Boost Converter (Improved M-SIBC) is proposed for renewable applications which provides a key to enhancing the voltage con... Read More about An Improved Multistage Switched Inductor Boost Converter (Improved M-SIBC) for Renewable Energy Applications: A key to Enhance Conversion Ratio.

A New Voltage Doubler Based DC-DC 2LCm-Y Power Converter Topologies for High-Voltage/Low-Current Renewable Energy Applications (2018)
Conference Proceeding
Bhaskar, M. S., Padmanaban, S., Wheeler, P., Blaabjerg, F., & Siano, P. (2018). A New Voltage Doubler Based DC-DC 2LCm-Y Power Converter Topologies for High-Voltage/Low-Current Renewable Energy Applications. In 2018 IEEE Transportation Electrification Conference and Expo (ITEC). https://doi.org/10.1109/ITEC.2018.8450120

In this treatise, a new voltage doubler based DCDC 2LCm-Y power converter topologies are uttered for the high voltage/low-current renewable energy applications. L-Y, 2L-Y, 2LC-Y and 2LCm-Y power converter categories are recently proposed in the exist... Read More about A New Voltage Doubler Based DC-DC 2LCm-Y Power Converter Topologies for High-Voltage/Low-Current Renewable Energy Applications.

Design of an Integrated Inductor for 45kW Aerospace Starter-Generator (2018)
Conference Proceeding
Raza Khowja, M., Gerada, C., Vakil, G., Quadri, S. Q., Wheeler, P., & Patel, C. (2018). Design of an Integrated Inductor for 45kW Aerospace Starter-Generator. In 2018 IEEE Transportation and Electrification Conference and Expo (ITEC) (570-575). https://doi.org/10.1109/ITEC.2018.8450246

A close physical and functional integration of passive components is required to make an efficient and power dense overall system. Such power dense systems are a prerequisite in aerospace and marine applications. This paper presents a design of an in... Read More about Design of an Integrated Inductor for 45kW Aerospace Starter-Generator.

Unipolar single reference multicarrier sinusoidal pulse width modulation based 7-level inverter with reduced number of semiconductor switches for renewable energy applications (2018)
Presentation / Conference
Raj, K., Mahajan, S. B., Sanjeevikumar, P., Frede, B., Pat, W., & Muhammad H., R. (2018, August). Unipolar single reference multicarrier sinusoidal pulse width modulation based 7-level inverter with reduced number of semiconductor switches for renewable energy applications. Paper presented at IEEE-PEMC 2018 - 18th International Conference on Power Electronics and Motion Control

In the present scenario of increasing power demand and depletion of fossil fuel results in the research advancements in the field of renewable energy sources. Among various types of renewable energy sources, photovoltaic related applications are... Read More about Unipolar single reference multicarrier sinusoidal pulse width modulation based 7-level inverter with reduced number of semiconductor switches for renewable energy applications.

Development of aircraft electric starter-generator system based-on active rectification technology (2018)
Journal Article
Bozhko, S., Yang, T., Le Peuvedic, J., Arumugam, P., Degano, M., La Rocca, A., …Wheeler, P. (2018). Development of aircraft electric starter-generator system based-on active rectification technology. IEEE Transactions on Transportation Electrification, 4(4), 985-996. https://doi.org/10.1109/TTE.2018.2863031

More-electric aircraft (MEA) has become a dominant trend for modern aircraft. On-board MEA, many functions, which are conventionally driven by pneumatic and hydraulic power, are replaced with electrical subsystems. Starting aircraft engines with an e... Read More about Development of aircraft electric starter-generator system based-on active rectification technology.

A Leakage-Inductance-Tolerant Commutation Strategy for Isolated AC/AC Converters (2018)
Journal Article
Nasir, U., Costabeber, A., Rivera, M., Wheeler, P., & Clare, J. (2019). A Leakage-Inductance-Tolerant Commutation Strategy for Isolated AC/AC Converters. IEEE Journal of Emerging and Selected Topics in Power Electronics, 7(1), 467-479. https://doi.org/10.1109/jestpe.2018.2861326

© 2013 IEEE. This paper proposes a generalized commutation strategy suitable for matrix-based isolated ac/ac conversion stages in solid-state transformers for use whenever there is nonnegligible leakage inductance in the isolation transformer. The st... Read More about A Leakage-Inductance-Tolerant Commutation Strategy for Isolated AC/AC Converters.

Wide bandgap voltage source inverter design for automotive electric drivetrain (2018)
Conference Proceeding
Savi, F., Buticchi, G., Gerada, C., Wheeler, P., & Barater, D. (in press). Wide bandgap voltage source inverter design for automotive electric drivetrain

In this paper a high power, high frequency voltage source inverter for automotive traction application is reviewed. The main objectives of the design process is the maximization of power density, while keeping high efficiency and low weight. In this... Read More about Wide bandgap voltage source inverter design for automotive electric drivetrain.

Three-phase rectifiers with current compensation schemes. Part I, Passive circuits (2018)
Conference Proceeding
Rivera, M., Faundez, D., Kolar, J., Wheeler, P., Riveros, J. A., & Toledo, S. (in press). Three-phase rectifiers with current compensation schemes. Part I, Passive circuits

—Three-phase rectifiers are widely used in several applications. The main feature desired in these power converters is a satisfying regulation of dc output voltage/current, but this ought to be achieved with high quality ac currents and unitary power... Read More about Three-phase rectifiers with current compensation schemes. Part I, Passive circuits.

Three-phase rectifiers with current compensation schemes. Part II, Active and hybrid configurations (2018)
Conference Proceeding
Rivera, M., Faundez, D., Kolar, J., Wheeler, P., Riveros, J. A., & Toledo, S. (in press). Three-phase rectifiers with current compensation schemes. Part II, Active and hybrid configurations

The current injection schemes for unidirectional three-phase diode bridge rectifiers are widely utilised in industrial and aerospace applications. The additional circuitry in combination with modern control strategies mitigate the effects of the conv... Read More about Three-phase rectifiers with current compensation schemes. Part II, Active and hybrid configurations.

Matrix converter open circuit fault behavior analysis and diagnosis with a model predictive control strategy (2018)
Journal Article
Zhang, J., Dan, H., Empringham, L., De Lillo, L., & Wheeler, P. (2018). Matrix converter open circuit fault behavior analysis and diagnosis with a model predictive control strategy. IEEE Journal of Emerging and Selected Topics in Power Electronics, 6(4), 1831-1839. https://doi.org/10.1109/jestpe.2018.2856460

A novel fast and reliable open circuit fault diagnosis strategy for a Matrix Converter with a Finite Control Set Model Predictive Control strategy is proposed in this paper. Current sensors are located ahead of the clamp circuit to measure the output... Read More about Matrix converter open circuit fault behavior analysis and diagnosis with a model predictive control strategy.

Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications (2018)
Journal Article
Lambert, G., Vieira Soares, M., Wheeler, P., Lobo Heldwein, M., & Romulo de Novaes, Y. (in press). Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications. IEEE Transactions on Power Electronics, https://doi.org/10.1109/TPEL.2018.2849927

Even though multipulse rectifiers are a long established and well-known technology, still their behavior is not fully described in the literature when they are fed by three-phase balanced sinusoidal currents sources. To address the aforementioned gap... Read More about Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications.

Control of modular multilevel cascade converters for offshore wind energy generation and transmission (2018)
Conference Proceeding
Diaz, M., Rojas, F., Donoso, F., Cardenas, R., Espinoza, M., Mora, A., & Wheeler, P. (2018). Control of modular multilevel cascade converters for offshore wind energy generation and transmission. In 2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER) (1-10). https://doi.org/10.1109/EVER.2018.8362406

The trend of multimegawatt (Multi-MW) wind turbines, especially for offshore installations, has positioned Modular Multilevel Cascade Converters (MMCCs) as a promising solution for Wind Energy Conversion Systems (WECSs). Additionally, High Voltage Di... Read More about Control of modular multilevel cascade converters for offshore wind energy generation and transmission.

Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter (2018)
Conference Proceeding
Diaz, M., Espinoza, M., Rojas, F., Wheeler, P., & Cardenas, R. (2018). Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter.

The Modular Multilevel Matrix Converter (M3C) is an ac-to-ac converter suitable for high-power applications. The control of this converter is complex, mainly when the frequencies of the ac systems connected to the ports of the converter are close or... Read More about Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter.

New modulation scheme for bidirectional quasi z-source modular multilevel converters (2018)
Conference Proceeding
Khera, F., Klumpner, C., & Wheeler, P. (2018). New modulation scheme for bidirectional quasi z-source modular multilevel converters.

This paper proposes a dedicated modulation scheme for a bidirectional quasi Z-source modular multilevel converter (BqZS-MMC). The operation principle and a suitable PWM method are proposed. The relation between the modulation index and shoot-through... Read More about New modulation scheme for bidirectional quasi z-source modular multilevel converters.

Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application (2018)
Conference Proceeding
Fritz, N., Rashed, M., Bozhko, S., Cuomo, F., & Wheeler, P. (2018). Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application.

A design procedure for the Dual Active Bridge (DAB) converter is presented, which aims to optimized power density and computational effort. When designing a DAB, the selection of circuit design parameters such as switching frequency, leakage inductan... Read More about Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application.

Flux control modulation for the dual active bridge DC/DC converter (2018)
Presentation / Conference
Fritz, N., Rashed, M., Bozhko, S., Cuomo, F., & Wheeler, P. (2018, April). Flux control modulation for the dual active bridge DC/DC converter. Paper presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)

This paper introduces a novel modulation technique for the single phase Dual Active Bridge (DAB) in which the switching frequency and transformer flux are modulated to achieve improved power transfer characteristics and reduced converter losses. By a... Read More about Flux control modulation for the dual active bridge DC/DC converter.

An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications (2018)
Conference Proceeding
Li, C., Yang, T., Lo Calzo, G., Bozhko, S., Gerada, C., & Wheeler, P. (2018). An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Electrical starter/generator (ESG) system is one of the key innovations of more-electric aircraft initiative. The ESG cranks the engine and accelerates it up to self-sustained speed using electric energy (starter mode) and then runs as a generator to... Read More about An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter (2018)
Conference Proceeding
Chen, L., Tarisciotti, L., Costabeber, A., Gottardo, D., Zanchetta, P., & Wheeler, P. (2018). Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter.

The Dual-Active-Bridge is a well-established isolated, bidirectional DC/DC topology suitable for applications where high efficiency, galvanic isolation and large voltage conversion ratios are required. However, in low voltage high power cases, the ou... Read More about Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter.

Operation principles of quasi Z-source modular multilevel converters (2018)
Conference Proceeding
Khera, F. A., Klumpner, C., & Wheeler, P. W. (2018). Operation principles of quasi Z-source modular multilevel converters. In Proceedings 2017 IEEE Southern Power Electronics Conference (SPEC) (1-6). https://doi.org/10.1109/SPEC.2017.8333617

This paper proposes the integration of a quasi Z-source network with a modular multilevel converter (MMC) to provide voltage boost capability. The proposed quasi-Z-source MMC uses two symmetrical networks of inductors and capacitors connected between... Read More about Operation principles of quasi Z-source modular multilevel converters.

Modulated predictive control for indirect matrix converter (2018)
Journal Article
Tarisciotti, L., Lei, J., Formentini, A., Trentin, A., Zanchetta, P., Wheeler, P., & Rivera, M. (in press). Modulated predictive control for indirect matrix converter. IEEE Transactions on Industry Applications, https://doi.org/10.1109/TIA.2017.2699666

Finite State Model Predictive Control (MPC) has been recently applied to several converter topologies as it can provide many advantages over other MPC techniques. The advantages of MPC include fast dynamics, multi-target control capability and relati... Read More about Modulated predictive control for indirect matrix converter.

Generic functional modelling of multi-pulse auto-transformer rectifier units for more-electric aircraft applications (2018)
Journal Article
Yang, T., Bozhko, S., Wheeler, P., Wang, S., & Wu, S. (2018). Generic functional modelling of multi-pulse auto-transformer rectifier units for more-electric aircraft applications. Chinese Journal of Aeronautics, 31(5), 883-891. https://doi.org/10.1016/j.cja.2018.03.010

The Auto-Transformer Rectifier Unit (ATRU) is one preferred solution for high-power AC/DC power conversion in aircraft. This is mainly due to its simple structure, high reliability and reduced kVA ratings. Indeed, the ATRU has become a preferred AC/D... Read More about Generic functional modelling of multi-pulse auto-transformer rectifier units for more-electric aircraft applications.

Design and testing of electromechanical actuator for aerospace applications (2018)
Conference Proceeding
Papini, L., Connor, P., Patel, C., Empringham, L., Gerada, C., & Wheeler, P. (2018). Design and testing of electromechanical actuator for aerospace applications. In 2018 25th International Workshop on Electric Drives: Optimization in Control of Electric Drives (IWED2018) - Proceedings (1-6). https://doi.org/10.1109/IWED.2018.8321392

Electromechanical actuators are gaining interest in the aerospace industry within the More Electrical Aircraft (MEA) architecture. The end-goal of fully electric aircraft includes Electromechanical actuation for flight control systems. The design and... Read More about Design and testing of electromechanical actuator for aerospace applications.

Bidirectional partial power converter interface for energy storage systems to provide peak shaving in grid-tied PV plants (2018)
Conference Proceeding
Muller, N., Kouro, S., Zanchetta, P., & Wheeler, P. (2018). Bidirectional partial power converter interface for energy storage systems to provide peak shaving in grid-tied PV plants.

The ever growing participation of modern renewable resources in electric markets has shaken the paradigm of generation-demand constant match. Most modern renewables add intermittent behaviour and high variability to electric markets, forcing other re... Read More about Bidirectional partial power converter interface for energy storage systems to provide peak shaving in grid-tied PV plants.

A modified modulation scheme for three-level diode-clamped matrix converter under unbalanced input conditions (2018)
Journal Article
Su, M., Zhao, Z., Dan, H., Peng, T., Sun, Y., Che, R., …Wheeler, P. (2018). A modified modulation scheme for three-level diode-clamped matrix converter under unbalanced input conditions. IET Power Electronics, 11(8), https://doi.org/10.1049/iet-pel.2017.0512

The three-level diode-clamped matrix converter topology has outstanding performance under ideal operating conditions. However, input disturbance can influence the waveforms at the output side of the converter due to the direct coupling between the in... Read More about A modified modulation scheme for three-level diode-clamped matrix converter under unbalanced input conditions.

Neural network based maximum power point tracking control with quadratic boost converter for PMSG—wind energy conversion system (2018)
Journal Article
Tiwari, R., Krishnamurthy, K., Neelakandan, R., Padmanaban, S., & Wheeler, P. (2018). Neural network based maximum power point tracking control with quadratic boost converter for PMSG—wind energy conversion system. Electronics, 7(2), Article 20. https://doi.org/10.3390/electronics7020020

This paper proposes an artificial neural network (ANN) based maximum power point tracking (MPPT) control strategy for wind energy conversion system (WECS) implemented with a DC/DC converter. The proposed topology utilizes a radial basis function netw... Read More about Neural network based maximum power point tracking control with quadratic boost converter for PMSG—wind energy conversion system.

Indirect model predictive control strategy with active damping implementation for a direct matrix converter operating at fixed switching frequency (2017)
Conference Proceeding
Rivera, M., Dan, H., Tarisciotti, L., & Wheeler, P. (2017). Indirect model predictive control strategy with active damping implementation for a direct matrix converter operating at fixed switching frequency.

One of the main drawbacks of the implementation of predictive control in a direct matrix converter is the high com¬putational cost and the adequate selection of weighting factors in order to control both input and output sides. In this paper is propo... Read More about Indirect model predictive control strategy with active damping implementation for a direct matrix converter operating at fixed switching frequency.

Indirect predictive control strategy with fixed switching frequency for a direct matrix converter (2017)
Conference Proceeding
Rivera, M., Tariscotti, L., Wheeler, P., & Bayhan, S. (in press). Indirect predictive control strategy with fixed switching frequency for a direct matrix converter.

The direct matrix converter has a large number of available switching states which implies that the implementation of predictive control techniques in this converter requires high computational cost while an adequate selection of weighting factors in... Read More about Indirect predictive control strategy with fixed switching frequency for a direct matrix converter.

Electric superbike racing: the design and construction of a championship winning electric superbike (2017)
Conference Proceeding
Wheeler, P., Blissett, J., & Gimeno-Fabra, M. (2017). Electric superbike racing: the design and construction of a championship winning electric superbike.

The electric superbikes recently developed at The University of Nottingham have to be considered as a high performance vehicles, competing with its internal combustion engine driven counterparts. This paper presents the motivations for this work as w... Read More about Electric superbike racing: the design and construction of a championship winning electric superbike.

Indirect model predictive control strategies with input filter resonance mitigation for a matrix converter operating at fixed switching frequency (2017)
Conference Proceeding
Rivera, M., Nikolic, A., Tarisciotti, L., & Wheeler, P. (2017). Indirect model predictive control strategies with input filter resonance mitigation for a matrix converter operating at fixed switching frequency.

The main issues of the implementation of model predictive control in a direct matrix converter are the high com¬putational cost, the adequate selection of weighting factors and the variable switching frequency which could produce resonances in the in... Read More about Indirect model predictive control strategies with input filter resonance mitigation for a matrix converter operating at fixed switching frequency.

A new AC/AC power converter (2017)
Conference Proceeding
Nasir, U., Costabeber, A., Wheeler, P., & Rivera, M. (2017). A new AC/AC power converter.

The Future Electrical Network will be based on the integration of different renewable energy sources. In this regard, modular bidirectional power converter architectures will get special attention. Galvanic isolation in such power converter architect... Read More about A new AC/AC power converter.

A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems (2017)
Conference Proceeding
Li, C., Lo Calzo, G., Bozhko, S., Gerada, C., Wheeler, P., & Yang, T. (2017). A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems

The neutral point voltage balancing issue for three level Neutral point clamped (NPC) converter has been extensively investigated recently. Different solutions to balance the neutral point have been proposed. However the proposed solutions so far eit... Read More about A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems.

Design recommendations for energy systems: a UK energy community study (2017)
Conference Proceeding
Panagiotou, K., Klumpner, C., Sumner, M., & Wheeler, P. (in press). Design recommendations for energy systems: a UK energy community study.

One of the key elements towards a decentralised energy sector is the consumers’ choice and participation, as the concept of energy prosumer is gaining more and more ground and energy community projects are spouting across UK. In order for the upcomin... Read More about Design recommendations for energy systems: a UK energy community study.

Geometry optimization and characterization of three-phase medium frequency transformer for 10kVA isolated DC-DC converter (2017)
Conference Proceeding
Lee, Y., Vakil, G., Watson, A. J., & Wheeler, P. (2017). Geometry optimization and characterization of three-phase medium frequency transformer for 10kVA isolated DC-DC converter. In 2017 IEEE Energy Conversion Congress and Exposition (ECCE) (511-518). https://doi.org/10.1109/ECCE.2017.8095826

Three-phase Dual Active Bridge converter is advisable for the High-power DC-DC conversion system. In the ac link, galvanically isolated transformer operated at a medium frequency range provides stepping up or down of the secondary bridge voltage.... Read More about Geometry optimization and characterization of three-phase medium frequency transformer for 10kVA isolated DC-DC converter.

Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer (2017)
Conference Proceeding
Lee, Y., Watson, A. J., Vakil, G., & Wheeler, P. (2017). Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer. In 2017 IEEE Energy Conversion Congress and Exposition (ECCE) (4531-4537). https://doi.org/10.1109/ECCE.2017.8096777

Multi-megawatt scale isolated DC-DC converters are likely to become increasingly popular as means to interconnect the MVDC grids of different voltage levels. Three-phase dual active bridge DC-DC (3DAB) converters operating with the zero-voltage switc... Read More about Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer.

A review of predictive control techniques for matrix converter applications (2017)
Conference Proceeding
Rivera, M., Wheeler, P., Rodriguez, J., & Wu, B. (2017). A review of predictive control techniques for matrix converter applications.

Predictive control has recently emerged as a promising alternative to more traditional methods for the control and modulation of power converters. This paper presents an overview of predictive control techniques applied to matrix converters. The pape... Read More about A review of predictive control techniques for matrix converter applications.

Modulated model predictive current control of an indirect matrix converter with active damping (2017)
Conference Proceeding
Di, Z., Rivera, M., Dan, H., Tarisciotti, L., Zhang, K., Xu, D., & Wheeler, P. (2017). Modulated model predictive current control of an indirect matrix converter with active damping.

A modulated model predictive control (M²PC) scheme for an indirect matrix converter is proposed in this paper, including an active damping method to mitigate the input filter resonance. The control strategy allows the instantaneous power control and... Read More about Modulated model predictive current control of an indirect matrix converter with active damping.

Indirect model predictive current control techniques for a direct matrix converter (2017)
Conference Proceeding
Rivera, M., Nasir, U., Tarisciotti, L., & Wheeler, P. (2017). Indirect model predictive current control techniques for a direct matrix converter.

The direct matrix converter has twenty-seven available switching states which implies that the implementation of predictive control techniques in this converter requires high computational cost while an adequate selection of weighting factors in orde... Read More about Indirect model predictive current control techniques for a direct matrix converter.

Indirect predictive control strategy with mitigation of input filter resonances for a direct matrix converter (2017)
Conference Proceeding
Rivera, M., Di, Z., Zhang, J., & Wheeler, P. (2017). Indirect predictive control strategy with mitigation of input filter resonances for a direct matrix converter.

In this paper an indirect model predictive current control strategy is proposed. The proposed method simplifies the computational cost while avoiding the use of weighting factors. Weighting factors are an issue for model predictive control in a direc... Read More about Indirect predictive control strategy with mitigation of input filter resonances for a direct matrix converter.

Indirect predictive control techniques for a matrix converter operating at fixed switching frequency (2017)
Conference Proceeding
Rivera, M., Toleda, S., Tariscotti, L., Wheeler, P., & Verne, S. (in press). Indirect predictive control techniques for a matrix converter operating at fixed switching frequency.

The direct matrix converter (DMC) has a large number of available switching states, wherewith, the implementa¬tion of predictive control techniques requires high computational resources. In addition, the simultaneous selection of weighting factors fo... Read More about Indirect predictive control techniques for a matrix converter operating at fixed switching frequency.

A modulated model predictive control scheme for the brushless doubly-fed induction machine (2017)
Conference Proceeding
Li, X., Peng, T., Dan, H., Zhang, G., Tang, W., & Wheeler, P. (2017). A modulated model predictive control scheme for the brushless doubly-fed induction machine. In 2017 IEEE Energy Conversion Congress and Exposition (ECCE) (1338-1342). https://doi.org/10.1109/ECCE.2017.8095945

This paper proposes a modulated model predictive control (MMPC) algorithm for a brushless double-fed induction machine. The Brushless Doubly-Fed Induction Machine has some important advantages over alternative solutions for brushless machine applicat... Read More about A modulated model predictive control scheme for the brushless doubly-fed induction machine.

Matrix converter open circuit fault diagnosis with asymmetric one zero SVM (2017)
Conference Proceeding
Zhang, J., Empringham, L., De Lillo, L., Dan, H., & Wheeler, P. (2017). Matrix converter open circuit fault diagnosis with asymmetric one zero SVM.

An open-circuit fault detection and diagnosis strategy for a direct matrix converter is proposed in this paper. The current recirculating path during an open circuit condition is considered in detail with the aim of contributing more expert knowledge... Read More about Matrix converter open circuit fault diagnosis with asymmetric one zero SVM.

An optimal full frequency control strategy for the modular multilevel matrix converter based on predictive control (2017)
Journal Article
Fan, B., Wang, K., Wheeler, P., Gu, C., & Li, Y. (in press). An optimal full frequency control strategy for the modular multilevel matrix converter based on predictive control. IEEE Transactions on Power Electronics, 33(8), https://doi.org/10.1109/TPEL.2017.2755767

The modular multilevel matrix converter (M3C) is a promising topology for high-voltage high-power applications. Recent researches have proved its significant advantages for adjustable-speed motor drives compared with the back-to-back modular multilev... Read More about An optimal full frequency control strategy for the modular multilevel matrix converter based on predictive control.

Integrated design of motor drives using random heuristic optimization for aerospace applications (2017)
Conference Proceeding
Cheong, B., Giangrande, P., Galea, M., Zanchetta, P., & Wheeler, P. (2017). Integrated design of motor drives using random heuristic optimization for aerospace applications.

High power density for aerospace motor drives is a key factor in the successful realization of the More Electric Aircraft (MEA) concept. An integrated system design approach offers optimization opportunities, which could lead to further improvements... Read More about Integrated design of motor drives using random heuristic optimization for aerospace applications.

Voltage-Double Magnetically Coupled Impedance Source Networks (2017)
Journal Article
Ji, Y., Liu, H., Zhang, C., & Wheeler, P. (2018). Voltage-Double Magnetically Coupled Impedance Source Networks. IEEE Transactions on Power Electronics, 33(7), 5983-5994. https://doi.org/10.1109/tpel.2017.2747590

The Alternate Arm Converter (AAC) - "short-overlap" mode operation - analysis and design parameter selection (2017)
Journal Article
Farr, E., Feldman, R., Clare, J. C., Watson, A. J., & Wheeler, P. (2018). The Alternate Arm Converter (AAC) - "short-overlap" mode operation - analysis and design parameter selection. IEEE Transactions on Power Electronics, 33(7), 5641-5659. https://doi.org/10.1109/TPEL.2017.2742899

This paper presents converter operation principles and theoretical analyses for “short-overlap” mode operation of the Alternate Arm Converter (AAC), which is a type of modular multilevel Voltage Source Converter (VSC) that has been proposed for HVDC... Read More about The Alternate Arm Converter (AAC) - "short-overlap" mode operation - analysis and design parameter selection.

Ultracapacitor storage enabled global MPPT for photovoltaic central inverters (2017)
Conference Proceeding
Muller, N., Renaudineau, H., Kouro, S., & Wheeler, P. (2017). Ultracapacitor storage enabled global MPPT for photovoltaic central inverters. In 2017 IEEE 26th International Symposium on Industrial Electronics (ISIE) (1046-1051). https://doi.org/10.1109/ISIE.2017.8001390

In most large-scale grid-tied photovoltaic (PV) plants, central inverter configurations are used, mainly due to higher converter efficiency and lower cost per kW. However, compared to other configurations, its Maximum Power Point Tracking (MPPT) effi... Read More about Ultracapacitor storage enabled global MPPT for photovoltaic central inverters.

Control of wind energy conversion systems based on the Modular Multilevel Matrix converter (2017)
Journal Article
Diaz, M., Cardenas, R., Espinoza, M., Mora, A., Rojas, F., Clare, J. C., & Wheeler, P. (2017). Control of wind energy conversion systems based on the Modular Multilevel Matrix converter. IEEE Transactions on Industrial Electronics, 64(11), 8799-8810. https://doi.org/10.1109/TIE.2017.2733467

The nominal power of single Wind Energy Conversion Systems (WECS) has been steadily growing, reaching power ratings close to 10MW. In the power conversion stage, medium-voltage power converters are replacing the conventional low-voltage back-to-back... Read More about Control of wind energy conversion systems based on the Modular Multilevel Matrix converter.

Quasi Z-source NPC inverter for PV application (2017)
Conference Proceeding
Effah, F. B., Wheeler, P., Watson, A. J., & Clare, J. C. (2017). Quasi Z-source NPC inverter for PV application. In Proceedings of 2017 IEEE PES PowerAfrica (153-158). https://doi.org/10.1109/PowerAfrica.2017.7991215

This paper presents the operating principles and modified space vector modulation strategy for a three-phase quasi Z-source neutral point clamped inverter for solar photovoltaic applications. This topology combines the advantages of the neutral point... Read More about Quasi Z-source NPC inverter for PV application.

A finite control set model predictive control method for matrix converter with zero common-mode voltage (2017)
Journal Article
Wang, L., Dan, H., Zhao, Y., Zhu, Q., Peng, T., Sun, Y., & Wheeler, P. (2018). A finite control set model predictive control method for matrix converter with zero common-mode voltage. IEEE Journal of Emerging and Selected Topics in Power Electronics, 6(1), 327-338. https://doi.org/10.1109/JESTPE.2017.2727501

In this paper a finite control set model predictive control method is presented that eliminates the common-mode voltage at the output of a matrix converter. In the predictive control process only the rotating vectors are selected to generate the outp... Read More about A finite control set model predictive control method for matrix converter with zero common-mode voltage.

Transistor clamped five level inverter using non-inverting double reference single carrier PWM technique for photovoltaic applications (2017)
Conference Proceeding
Bhaskar, M. S., Padmanaban, S., Fedak, V., Blaabjerg, F., & Wheeler, P. (2017). Transistor clamped five level inverter using non-inverting double reference single carrier PWM technique for photovoltaic applications. In Proceedings - 2017 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2017 and 2017 Intl Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2017 (777-782). https://doi.org/10.1109/OPTIM.2017.7975063

This treatise deals with Transistor Clamped Five Level Inverter using Non-Inverting Double Reference Single Carrier PWM (NIDRSC PWM) Technique. Conventional or two level inverter have drawbacks like: i) Requirement of fast switching devices, ii) Very... Read More about Transistor clamped five level inverter using non-inverting double reference single carrier PWM technique for photovoltaic applications.

A single-phase bidirectional AC/DC converter for V2G applications (2017)
Journal Article
Peng, T., Yang, P., Dan, H., Wang, H., Han, H., Yang, J., …Wheeler, P. (2017). A single-phase bidirectional AC/DC converter for V2G applications. Energies, 10(7), Article 881. https://doi.org/10.3390/en10070881

This paper presents a single-phase bidirectional current-source AC/DC converter for vehicle to grid (V2G) applications. The presented converter consists of a line frequency commutated unfolding bridge and an interleaved buck-boost stage. The low semi... Read More about A single-phase bidirectional AC/DC converter for V2G applications.

Design optimization of integrated rotor-less inductors for high-speed AC drive applications (2017)
Conference Proceeding
Raza Khowja, M., Gerada, C., Vakil, G., Patel, C., & Wheeler, P. (in press). Design optimization of integrated rotor-less inductors for high-speed AC drive applications. In 2017 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (69-74)

Discrete sub-system due to passive elements in motor drive require functional and structural integration to make efficient and power dense overall system. Such power dense system is the prerequisite in aerospace and marine applications. This paper pr... Read More about Design optimization of integrated rotor-less inductors for high-speed AC drive applications.

Control Design and Voltage Stability Analysis of a Droop-Controlled Electrical Power System for More Electric Aircraft (2017)
Journal Article
Gao, F., Bozhko, S., Costabeber, A., Asher, G., & Wheeler, P. (2017). Control Design and Voltage Stability Analysis of a Droop-Controlled Electrical Power System for More Electric Aircraft. IEEE Transactions on Industrial Electronics, 64(12), 9271-9281. https://doi.org/10.1109/TIE.2017.2711552

This paper focuses on the analysis of a single DC bus multi-generator Electrical Power System (EPS) for future More Electric Aircrafts (MEA). Within such a single bus paradigm, the paper proposes a detailed control design procedure and provides a sta... Read More about Control Design and Voltage Stability Analysis of a Droop-Controlled Electrical Power System for More Electric Aircraft.

A novel multi-modular series HVDC tap (2017)
Conference Proceeding
Tang, Y., Watson, A., Wheeler, P., Farr, E., & Feldman, R. (2017). A novel multi-modular series HVDC tap. In 13th IET International Conference on AC and DC Power Transmission (ACDC 2017) (1-6). https://doi.org/10.1049/cp.2017.0044

Tapping energy from a HVDC transmission line to serve small remote communities has been considered by researchers and HVDC manufacturers since the 1960s. Many HVDC taps proposed consider the performance of diodes, Thyristors and GTOs and the utilizat... Read More about A novel multi-modular series HVDC tap.

Preselection algorithm based on predictive control for direct matrix converter (2017)
Journal Article
Dan, H., Zhu, Q., Peng, T., Yao, S., & Wheeler, P. (2017). Preselection algorithm based on predictive control for direct matrix converter. IET Electric Power Applications, 11(5), 768-775. https://doi.org/10.1049/iet-epa.2016.0473

This paper presents an enhanced predictive control strategy to reduce the calculation effort for direct matrix converters. The main idea is to preselect the switching states to decrease the calculation effort during each sample period. The proposed p... Read More about Preselection algorithm based on predictive control for direct matrix converter.

DC-Link Capacitor Second Carrier Band Switching Harmonic Current Reduction in Two-Level Back-to-Back Converters (2017)
Journal Article
Shen, L., Bozhko, S., Hill, C. I., & Wheeler, P. (2018). DC-Link Capacitor Second Carrier Band Switching Harmonic Current Reduction in Two-Level Back-to-Back Converters. IEEE Transactions on Power Electronics, 33(4), 3567-3574. https://doi.org/10.1109/TPEL.2017.2706972

© 1986-2012 IEEE. This paper proposes an active switching harmonic current reduction method within the dc-link capacitor of two-level, three-phase, back-to-back converters. This method is based on the derived analytical solution for switching harmoni... Read More about DC-Link Capacitor Second Carrier Band Switching Harmonic Current Reduction in Two-Level Back-to-Back Converters.

Design optimization of integrated rotational inductor for high-speed AC drive applications (2017)
Conference Proceeding
Khowja, M. R., Gerada, C., Vakil, G., Patel, C., & Wheeler, P. (2017). Design optimization of integrated rotational inductor for high-speed AC drive applications.

In order to make an efficient and power dense overall system, a close physical and functional integration of passive components is required instead of having a separate sub¬system for passives. Such power dense system is vital in aerospace and marine... Read More about Design optimization of integrated rotational inductor for high-speed AC drive applications.

Thermal Design of Linear Induction and Synchronous Motors for Electromagnetic Launch of Civil Aircraft (2017)
Journal Article
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2017). Thermal Design of Linear Induction and Synchronous Motors for Electromagnetic Launch of Civil Aircraft. IEEE Transactions on Plasma Science, 45(7), 1146-1153. https://doi.org/10.1109/TPS.2017.2697941

The engine size of modern passenger transport aircraft is principally determined by take-off conditions, since initial acceleration requires maximum engine power. An elec¬tromagnetic launch (EML) system could provide some or all of the energy require... Read More about Thermal Design of Linear Induction and Synchronous Motors for Electromagnetic Launch of Civil Aircraft.

Error-voltage-based open-switch fault diagnosis strategy for matrix converters with model predictive control method (2017)
Journal Article
Dan, H., Peng, T., Su, M., Deng, H., Zhu, Q., Zhao, Z., & Wheeler, P. (2017). Error-voltage-based open-switch fault diagnosis strategy for matrix converters with model predictive control method. IEEE Transactions on Industry Applications, 53(5), 4603-4612. https://doi.org/10.1109/TIA.2017.2695978

This paper proposes an error-voltage based open-switch fault diagnosis strategy for matrix converter (MC). A finite control set model predictive control (FCS-MPC) method is used to operate the MC. The MC system performances under normal operation and... Read More about Error-voltage-based open-switch fault diagnosis strategy for matrix converters with model predictive control method.

Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends (2017)
Journal Article
Gu, C., Wheeler, P., Castellazzi, A., Watson, A. J., & Effah, F. (2017). Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends. Energies, 10(4), Article 495. https://doi.org/10.3390/en10040495

Circuit breakers (CBs) are the main protection devices for both alternating current (AC) and direct current (DC) power systems, ranging from tens of watts up to megawatts. This paper reviews the current status for solid-state circuit breakers (SSCBs)... Read More about Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends.

A branch current reallocation based energy balancing strategy for the modular multilevel matrix converter operating around equal frequency (2017)
Journal Article
Fan, B., Wang, K., Gu, C., Wheeler, P., & Li, Y. (2018). A branch current reallocation based energy balancing strategy for the modular multilevel matrix converter operating around equal frequency. IEEE Transactions on Power Electronics, 33(2), 1105-1117. https://doi.org/10.1109/TPEL.2017.2685431

Modular multilevel matrix converter (M3C) is a promising topology for medium-voltage high-power applications. Due to the modular structure, it features easy scalability, high quality output waveforms and superior fault tolerance. However, M3C suffers... Read More about A branch current reallocation based energy balancing strategy for the modular multilevel matrix converter operating around equal frequency.

Control of a direct matrix converter with modulated model predictive control (2017)
Journal Article
Vijayagopal, M., Zanchetta, P., Empringham, L., De Lillo, L., Tarisciotti, L., & Wheeler, P. (2017). Control of a direct matrix converter with modulated model predictive control. IEEE Transactions on Industry Applications, 53(3), 2342-2349. https://doi.org/10.1109/TIA.2017.2674602

This paper investigates the use of a model- predic-tive control strategy to control a direct matrix converter. The proposed control method combines the features of the classical Model Predictive Control and the Space Vector Modulation technique into... Read More about Control of a direct matrix converter with modulated model predictive control.

Mitigating the effect of series capacitance unbalance on the voltage reduction capability of an auxiliary CSI used as switching ripple active filter (2017)
Conference Proceeding
Papadopoulos, S., Klumpner, C., Rashed, M., & Wheeler, P. (2017). Mitigating the effect of series capacitance unbalance on the voltage reduction capability of an auxiliary CSI used as switching ripple active filter. . https://doi.org/10.1109/ECCE.2016.7855244

The use of series connected capacitors for high voltage applications has been proven to be beneficial for voltage stress reduction across power semiconductors. In a 3-phase grid any asymmetry in the value of the series capacitance may lead to signifi... Read More about Mitigating the effect of series capacitance unbalance on the voltage reduction capability of an auxiliary CSI used as switching ripple active filter.

Reducing weight and fuel consumption of civil aircraft by electromagnetic launch (2017)
Conference Proceeding
Bertola, L., Cox, T., Wheeler, P., Polenta, V., Garvey, S. D., & Morvan, H. (2017). Reducing weight and fuel consumption of civil aircraft by electromagnetic launch.

Electromagnetic launch systems have been proposed for military applications to accelerate jet planes on aircraft carriers. This paper proposes the implementation of similar technology to aid civil aircraft take-off, which can provide significant econ... Read More about Reducing weight and fuel consumption of civil aircraft by electromagnetic launch.

Vector control of an open-ended winding induction machine based on a two-output indirect matrix converter (2017)
Journal Article
Riedemann, J., Clare, J. C., Wheeler, P., Blasco Giménez, R., Cardenas, R., & Pena, R. (in press). Vector control of an open-ended winding induction machine based on a two-output indirect matrix converter. Epe Journal, https://doi.org/10.1080/09398368.2016.1261457

The open-ended winding induction machine fed from a standard two-level Voltage Source Inverter (VSI) arrangement is an attractive solution for AC drives. An alternative power converter approach is to use an Indirect Matrix Converter (IMC) consisting... Read More about Vector control of an open-ended winding induction machine based on a two-output indirect matrix converter.

A comprehensive analysis and hardware implementation of control strategies for high output voltage DC-DC boost power converter (2017)
Journal Article
Padmanaban, S., Grandi, G., Blaabjerg, F., Wheeler, P., Siano, P., & Hammami, M. (2017). A comprehensive analysis and hardware implementation of control strategies for high output voltage DC-DC boost power converter. International Journal of Computational Intelligence Systems, 10(1), https://doi.org/10.2991/ijcis.2017.10.1.10

Classical DC-DC converters used in high voltage direct current (HVDC) power transmission systems, lack in terms of efficiency, reduced transfer gain and increased cost with sensor (voltage/current) numbers. Besides, the internal self-parasitic behavi... Read More about A comprehensive analysis and hardware implementation of control strategies for high output voltage DC-DC boost power converter.

Matrix converter open circuit behavior analysis (2016)
Conference Proceeding
Zhang, J., Brunson, C., Bowden, J., Wheeler, P., & De Lillo, L. (2016). Matrix converter open circuit behavior analysis. In IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society. https://doi.org/10.1109/IECON.2016.7793184

The matrix converter current recirculating path during an open circuit condition is given in detail with the aim of contributing more expert knowledge to a fault detection system for matrix converter. Simulation results were obtained demonstrating ho... Read More about Matrix converter open circuit behavior analysis.

A Venturini based modulation technique for a new isolated AC/AC power converter (2016)
Conference Proceeding
Nasir, U., Rivera, M., Costabeber, A., & Wheeler, P. (2016). A Venturini based modulation technique for a new isolated AC/AC power converter.

The Future Global Electricity Network is expected to have large integration of renewable generators, and to be widely interconnected. As a consequence, the multi-modular bidirectional AC/AC power conversion architectures will play a major role in imp... Read More about A Venturini based modulation technique for a new isolated AC/AC power converter.

A branch current reallocation based energy balancing strategy for the modular multilevel matrix converter operating around equal frequency (2016)
Conference Proceeding
Fan, B., Wang, K., Gu, C., Wheeler, P., & Li, Y. (2016). A branch current reallocation based energy balancing strategy for the modular multilevel matrix converter operating around equal frequency. In IECON 2016 Proceedings - 42nd Annual Conference of the IEEE Industrial Electronics Society (3111-3116). https://doi.org/10.1109/IECON.2016.7792966

The Modular multilevel matrix converter (M3C) is a promising topology for medium-voltage, high-power applications. Due to the modular structure, it is scalable, produces high quality output waveforms and can be fault tolerant. However, the M3C suffer... Read More about A branch current reallocation based energy balancing strategy for the modular multilevel matrix converter operating around equal frequency.

Active Magnetic Bearing system design featuring a predictive current control (2016)
Conference Proceeding
Papini, L., Tarisciotti, L., Costabeber, A., Gerada, C., & Wheeler, P. (2016). Active Magnetic Bearing system design featuring a predictive current control. In IECON 2016 Proceedings - 42nd Annual Conference of the IEEE Industrial Electronics Society (3217-3222). https://doi.org/10.1109/IECON.2016.7793444

Active Magnetic Bearing (AMB) technology is becoming attractive for several reasons such as high speed operations, high reliability and vibrations exemption. Moreover, AMB can behave as active vibration dampers and provide a real-time control of the... Read More about Active Magnetic Bearing system design featuring a predictive current control.

X-Y converter family: A new breed of buck boost converter for high step-up renewable energy applications (2016)
Conference Proceeding
Mahajan, S., Sanjeevikumar, P., Wheeler, P., Blaabjerg, F., Rivera, M., & Kulkarni, R. (in press). X-Y converter family: A new breed of buck boost converter for high step-up renewable energy applications.

A new breed of a buck boost converter, named as the XY converter family is proposed in this article. In the XY family, 16 topologies are presented which are highly suitable for renewable energy applications which require a high ratio of DC-DC convert... Read More about X-Y converter family: A new breed of buck boost converter for high step-up renewable energy applications.

Energy storage system for global maximum power point tracking on central inverter PV plants (2016)
Conference Proceeding
Muller, N., Kouro, S., Renaudineau, H., & Wheeler, P. (2016). Energy storage system for global maximum power point tracking on central inverter PV plants.

Central inverters are the most common configuration for large-scale photovoltaic systems. Under partial shading or any non¬uniform conditions on the photovoltaic plant, several power maxima may arise. Conventional perturb and observe and other classi... Read More about Energy storage system for global maximum power point tracking on central inverter PV plants.

Performance benchmark of Si IGBTs vs. SiC MOSFETs in small-scale wind energy conversion systems (2016)
Conference Proceeding
Hussein, A., Castellazzi, A., Wheeler, P., & Klumpner, C. (in press). Performance benchmark of Si IGBTs vs. SiC MOSFETs in small-scale wind energy conversion systems.

Modern power electronics devices based on SiC power MOSFETs technology become more demanding in the last few years. They show better performance over Si-IGBTs on renewable energy power conversion systems due to their higher switching frequency, highe... Read More about Performance benchmark of Si IGBTs vs. SiC MOSFETs in small-scale wind energy conversion systems.

A novel five-level optimized carrier multilevel PWM quad-inverter six-phase AC drive (2016)
Conference Proceeding
Sanjeevikumar, P., Blaabjerg, F., Wheeler, P., Fedak, V., Duran, M., & Siano, P. (2016). A novel five-level optimized carrier multilevel PWM quad-inverter six-phase AC drive. In Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference (PEMC) (26-31). https://doi.org/10.1109/EPEPEMC.2016.7751969

A novel single carrier pulse-width modulation (PWM) for a new quad-inverter configuration for multilevel six-phase asymmetrical open-winding ac converter is proposed in this article. Modularity of the circuit consist of four standard two-level voltag... Read More about A novel five-level optimized carrier multilevel PWM quad-inverter six-phase AC drive.

Design optimization of a high-power transformer for three-phase dual active bridge DC-DC converter for MVDC grids (2016)
Conference Proceeding
Lee, Y., Vakil, G., Feldman, R., Goodman, A., & Wheeler, P. (in press). Design optimization of a high-power transformer for three-phase dual active bridge DC-DC converter for MVDC grids.

High-power DC-DC converter will be one of the essential technologies for the future DC grids. Especially, a three-phase dual-active bridge DC-DC (3DAB) Converter is highly suitable for high-power DC systems. Key component within this converter is the... Read More about Design optimization of a high-power transformer for three-phase dual active bridge DC-DC converter for MVDC grids.

New configurations of power converters for grid interconnection systems (2016)
Conference Proceeding
Rivera, M., Toleda, S., Nasir, U., Costabeber, A., & Wheeler, P. (2016). New configurations of power converters for grid interconnection systems.

The increased penetration of renewable energy sources and other distributed energy sources has been seen nowadays. In this scenario power converters play a crucial role by providing the interconnection of these energy sources. This paper presents new... Read More about New configurations of power converters for grid interconnection systems.

The application of the modular multilevel matrix converter in high-power wind turbines (2016)
Conference Proceeding
Diaz, M., Espinoza, M., Mora, A., Cardenas, R., & Wheeler, P. (2016). The application of the modular multilevel matrix converter in high-power wind turbines. In 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe). https://doi.org/10.1109/EPE.2016.7695437

The trend in wind turbines has shown an ongoing power rating growth, reaching sizes up to 10 MW. Multilevel converters have therefore become a favourable solution for Multi-MW Wind Energy Conversion Systems (WECSs), due to high efficiency, reliabilit... Read More about The application of the modular multilevel matrix converter in high-power wind turbines.

A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms (2016)
Conference Proceeding
Lee, Y., Vakil, G., Feldman, R., Watson, A. J., & Wheeler, P. (2016). A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms. In 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe) (1-10). https://doi.org/10.1109/EPE.2016.7695573

This paper presents the steady-state analysis of a high power step-up DC-DC converter based three-phase dual active bridge (3DAB) for use as a medium voltage (MV) DC-DC collector of offshore wind farms. An optimization procedure for a high-power medi... Read More about A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms.

Novel integrative options for passive filter inductor in high speed AC drives (2016)
Conference Proceeding
Raza Khowja, M., Gerada, C., Vakil, G., Wheeler, P., & Patel, C. (2016). Novel integrative options for passive filter inductor in high speed AC drives. In IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society. https://doi.org/10.1109/IECON.2016.7793661

This paper presents novel integration options for passive inductor which include: motor-shaped rotational and motor-shaped rotor-less inductor for high speed motor drive system. The novel options have been designed and their performance is compared w... Read More about Novel integrative options for passive filter inductor in high speed AC drives.

Modelling and control of the modular multilevel matrix converter and its application to wind energy conversion systems (2016)
Conference Proceeding
Diaz, M., Cardenas, R., Espinoza, M., Mora, A., & Wheeler, P. (2016). Modelling and control of the modular multilevel matrix converter and its application to wind energy conversion systems.

In the last past years, some countries are enforcing stringent grid codes to regulate the connection of Wind Energy Conversion Systems (WECSs) to the electrical network, mainly because of the high penetration of electric power from this renewable sou... Read More about Modelling and control of the modular multilevel matrix converter and its application to wind energy conversion systems.

Minimization of electro-mechanical interaction with posicast strategies for more-electric aircraft applications (2016)
Conference Proceeding
Ahumada, C., Garvey, S. D., Yang, T., Kulsangcharoen, P., Wheeler, P., & Morvan, H. (2016). Minimization of electro-mechanical interaction with posicast strategies for more-electric aircraft applications.

This paper studies strategies to minimize the electromechanical interaction (EMI) within aircraft power systems. With the growth of electrical power on-board aircraft, the interaction between the electrical systems and the engine core will become sig... Read More about Minimization of electro-mechanical interaction with posicast strategies for more-electric aircraft applications.

Design study and scaled experiment of induction and synchronous motor for civil application of electromagnetic aircraft launch system (2016)
Conference Proceeding
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2016). Design study and scaled experiment of induction and synchronous motor for civil application of electromagnetic aircraft launch system.

The engine size of modern passenger transport aircraft is principally determined by take-off conditions, since initial acceleration requires maximum engine power. An Electromagnetic Launch (EML) system could provide some or all of the energy required... Read More about Design study and scaled experiment of induction and synchronous motor for civil application of electromagnetic aircraft launch system.

Z-source matrix rectifier (2016)
Journal Article
Zhang, C., Hongchen, L., Yuliang, J., Dan, Z., Wheeler, P., & Guolei, F. (2016). Z-source matrix rectifier. IET Power Electronics, 9(13), 2580-2590. https://doi.org/10.1049/iet-pel.2015.0966

This paper presents a novel Z-source matrix rectifier(ZSMR). To overcome the inherent disadvantage that the voltage transfer ratio for traditional matrix rectifier cannot be more than 0.866, a Z-source network has been combined with the matrix rectif... Read More about Z-source matrix rectifier.

A review of power converter topologies with medium/high frequency transformers for grid interconnection systems (2016)
Conference Proceeding
Nasir, U., Rivera, M., Toleda, S., Costabeber, A., & Wheeler, P. (2016). A review of power converter topologies with medium/high frequency transformers for grid interconnection systems.

In recent years, power electronics has evolved dra¬matically due to their importance in power extracted manage¬ment from renewable sources. In this paper an overview of grid interconnection systems with galvanic isolation is presented. The most commo... Read More about A review of power converter topologies with medium/high frequency transformers for grid interconnection systems.

Experimental validation of a hybrid converter with enhanced switching ripple cancellation (2016)
Journal Article
Papadopoulos, S., Klumpner, C., Rashed, M., & Wheeler, P. (2016). Experimental validation of a hybrid converter with enhanced switching ripple cancellation. IET Power Electronics, 9(12), 2360-2368. https://doi.org/10.1049/iet-pel.2015.0984

This study presents the experimental evaluation of a proposed new three phase hybrid converter topology for medium voltage applications. The topology is based on the interconnection of a low switching frequency voltage source inverter (VSI), rated at... Read More about Experimental validation of a hybrid converter with enhanced switching ripple cancellation.

Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance (2016)
Conference Proceeding
Gu, C., Effah, F. B., Castellazzi, A., Watson, A. J., & Wheeler, P. (2016). Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance. In 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe) (1-10). https://doi.org/10.1109/EPE.2016.7695675

Current-limiting strategies for solid-state circuit breaker (SSCB) without adding impedance is introduced in this paper. With the current limitation of novel phase-shifting method, the advantages are simple hardware structure, relatively low cost, no... Read More about Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance.

An enhanced secondary control approach for voltage restoration in the DC distribution system (2016)
Conference Proceeding
Gao, F., Wheeler, P., & Bozhko, S. (2016). An enhanced secondary control approach for voltage restoration in the DC distribution system.

The paper will deal with the problem of establishing a desirable power sharing in multi-feed electric power system for future more-electric aircraft (MEA) platforms. The MEA is one of the major trends in modern aerospace engineering aiming for reduct... Read More about An enhanced secondary control approach for voltage restoration in the DC distribution system.

Fixed frequency finite-state model predictive control for indirect matrix converters with optimal switching pattern (2016)
Conference Proceeding
Lei, J., Tariscotti, L., Trentin, A., Zanchetta, P., Wheeler, P., & Formentini, A. (2016). Fixed frequency finite-state model predictive control for indirect matrix converters with optimal switching pattern.

Finite States Model Predictive Control (MPC) has been recently applied to several converters topologies for the many advantages it can provide such as fast dynamics, multi-target control capabilities, easy implementation on digital control board and... Read More about Fixed frequency finite-state model predictive control for indirect matrix converters with optimal switching pattern.

Predictive current control with instantaneous reactive power minimization for a four-leg indirect matrix converter (2016)
Journal Article
Garcia, C. F., Rivera, M. E., Rodriguez, J. R., Wheeler, P., & Pena, R. S. (2017). Predictive current control with instantaneous reactive power minimization for a four-leg indirect matrix converter. IEEE Transactions on Industrial Electronics, 64(2), 922-929. https://doi.org/10.1109/TIE.2016.2610939

This paper presents the experimental valida¬tion of a predictive current control strategy with minimiza¬tion of the instantaneous reactive input power for a Four-Leg Indirect Matrix Converter (4Leg-IMC). The topology includes an input matrix converte... Read More about Predictive current control with instantaneous reactive power minimization for a four-leg indirect matrix converter.

Experimental comparison of devices thermal cycling in direct matrix converters (DMC) and Indirect Matrix Converters (IMC) using SiC MOSFETs (2016)
Conference Proceeding
Trentin, A., Zanchetta, P., Empringham, L., De Lillo, L., Wheeler, P., & Clare, J. C. (2016). Experimental comparison of devices thermal cycling in direct matrix converters (DMC) and Indirect Matrix Converters (IMC) using SiC MOSFETs.

This paper presents an experimental comparison between a Direct Matrix Converter and an Indirect Matrix Converter in terms of semiconductor devices thermal cycling. Both converters have been designed and built using SiC MOSFETs; the Indirect Matrix C... Read More about Experimental comparison of devices thermal cycling in direct matrix converters (DMC) and Indirect Matrix Converters (IMC) using SiC MOSFETs.

A survey on configurations of current-limiting circuit breakers (CL-CB) (2016)
Conference Proceeding
Gu, C., Wheeler, P., Castellazzi, A., Watson, A. J., & Effah, F. B. (2016). A survey on configurations of current-limiting circuit breakers (CL-CB).

This paper presents a survey of topology configurations of current-limiting circuit breakers. Twelve different current-limiting topologies within four categories are detailed discussed and compared. It is concluded that active CL-CB may be a good cho... Read More about A survey on configurations of current-limiting circuit breakers (CL-CB).

Silicon carbide MOSFETs in more electric aircraft power converters: the performance and reliability benefits over silicon IGBTs for a specified flight mission profile (2016)
Conference Proceeding
O'Donnell, S., Debauche, J., Wheeler, P., & Castellazzi, A. (2016). Silicon carbide MOSFETs in more electric aircraft power converters: the performance and reliability benefits over silicon IGBTs for a specified flight mission profile.

This paper describes the design, construction and performance of a 5 kVA aviation power module containing silicon carbide MOSFETs. The function and control of this module within a commercial aviation power electrical control unit (ECU) application is... Read More about Silicon carbide MOSFETs in more electric aircraft power converters: the performance and reliability benefits over silicon IGBTs for a specified flight mission profile.

Proposed novel multiphase-multilevel inverter configuration for open-end winding loads (2016)
Conference Proceeding
Padmanaban, S., Wheeler, P., Blaabjerg, F., Ertas, A. H., Ojo Olorunfemi, J., & Szcze?niak, P. (2016). Proposed novel multiphase-multilevel inverter configuration for open-end winding loads.

This article address a new multiphase-multilevel inverter configuration for open-winding loads and suitable for medium power (low-voltage/high-current) applications such as ‘More Electric Aircraft’. Modular structure comprised of standard dual three-... Read More about Proposed novel multiphase-multilevel inverter configuration for open-end winding loads.

Superconducting electromagnetic launch system for civil aircraft (2016)
Journal Article
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2016). Superconducting electromagnetic launch system for civil aircraft. IEEE Transactions on Applied Superconductivity, 26(8), https://doi.org/10.1109/TASC.2016.2598772

This paper considers the feasibility of different superconducting technologies for electromagnetic launch (EML) to assist civil aircraft take-off. EML has the potential of reducing the required runway length by increasing aircraft acceleration. Expen... Read More about Superconducting electromagnetic launch system for civil aircraft.

Study on bidirectional-charger for electric vehicle applied to power dispatching in smart grid (2016)
Conference Proceeding
Fang, Y., Cao, S., Xie, Y., & Wheeler, P. (in press). Study on bidirectional-charger for electric vehicle applied to power dispatching in smart grid.

It will be one of the most important content to take the electric vehicle batteries as distributed energy storage units which can accept the power dispatching, and now bidirectional charger is the key power electronic device that has been used to con... Read More about Study on bidirectional-charger for electric vehicle applied to power dispatching in smart grid.

Optimal control of three-phase embedded power grids (2016)
Conference Proceeding
Formentini, A., Dewar, D., Zanchetta, P., Wheeler, P., Boroyevich, D., & Schanen, J. (2016). Optimal control of three-phase embedded power grids.

This paper presents an automated and scalable approach for the tuning of power converters control systems in embedded power grids. These are composed by different power converter interconnected to each other and are increasingly adopted in a range of... Read More about Optimal control of three-phase embedded power grids.

A novel multilevel quad-inverter configuration for quasi six-phase open-winding converter (2016)
Conference Proceeding
Padmanaban, S., Blaabjerg, F., Wheeler, P. W., Siano, P., Martirano, L., & Szcze?niak, P. (2016). A novel multilevel quad-inverter configuration for quasi six-phase open-winding converter.

This paper developed a novel quad-inverter configuration for multilevel six-phase asymmetrical open-winding AC converter. Proposal found to be suited for (low-voltage/high-current) applications such as AC tractions and ‘More-Electric Aircraft’ propul... Read More about A novel multilevel quad-inverter configuration for quasi six-phase open-winding converter.

A family of DC-DC converters deduced from impedance source DC-DC converters for high step-up conversion (2016)
Journal Article
Liu, H., Li, F., & Wheeler, P. (2016). A family of DC-DC converters deduced from impedance source DC-DC converters for high step-up conversion. IEEE Transactions on Industrial Electronics, 63(11), 6856-6866. https://doi.org/10.1109/TIE.2016.2582826

This paper introduces a family of DC-DC converters based on impedance source DC-DC converters. The derived topology is suitable for high voltage step-up ratios. Compared to the typical impedance source DC-DC converters, the proposed topology dramati... Read More about A family of DC-DC converters deduced from impedance source DC-DC converters for high step-up conversion.

Isolated/non-isolated quad-inverter configuration for multilevel symmetrical/asymmetrical dual six-phase star-winding converter (2016)
Conference Proceeding
Padmanaban, S., Hontz, M. R., Khanna, R., Wheeler, P. W., Blaabjerg, F., & Ojo Olorunfemi, J. (2016). Isolated/non-isolated quad-inverter configuration for multilevel symmetrical/asymmetrical dual six-phase star-winding converter.

This article presents the developments of a novel isolated/non-isolated quad inverter configuration for multilevel dual six-phase (twelve-phase) star-winding converter. The modular circuit consists of four standard voltage source inverters (VSIs). Ea... Read More about Isolated/non-isolated quad-inverter configuration for multilevel symmetrical/asymmetrical dual six-phase star-winding converter.

Experimental efficiency comparison between a direct matrix converter and an indirect matrix converter using both Si IGBTs and SiC MOSFETs (2016)
Journal Article
Trentin, A., Liliana de Lillio, L., Empringham, L., Zanchetta, P., Wheeler, P., & Clare, J. C. (2016). Experimental efficiency comparison between a direct matrix converter and an indirect matrix converter using both Si IGBTs and SiC MOSFETs. IEEE Transactions on Industry Applications, 52(5), 4135-4145. https://doi.org/10.1109/TIA.2016.2573752

This paper presents an experimental efficiency comparison study between two different direct AC-AC converter topologies: a direct matrix converter (DMC) and an indirect matrix converter (IMC). The evaluation is performed under variable load condition... Read More about Experimental efficiency comparison between a direct matrix converter and an indirect matrix converter using both Si IGBTs and SiC MOSFETs.

Resonant control system for low-voltage ride-through in wind energy conversion systems (2016)
Journal Article
Cardenas, R., Diaz, M., Rojas, F., Clare, J. C., & Wheeler, P. (2016). Resonant control system for low-voltage ride-through in wind energy conversion systems. IET Power Electronics, 9(6), 1297-1305. https://doi.org/10.1049/iet-pel.2015.0488

Owing to the high penetration of electrical energy from wind energy conversion systems (WECSs), some countries are enforcing stringent grid codes to regulate low-voltage-ride-through (LVRT) operation of WECSs. This study presents a self-tuning resona... Read More about Resonant control system for low-voltage ride-through in wind energy conversion systems.

Comparative stability analysis of droop control approaches in voltage-source-converter-based DC microgrids (2016)
Journal Article
Gao, F., Bozhko, S., Costabeber, A., Patel, C., Wheeler, P., Hill, C. I., & Asher, G. (in press). Comparative stability analysis of droop control approaches in voltage-source-converter-based DC microgrids. IEEE Transactions on Power Electronics, https://doi.org/10.1109/TPEL.2016.2567780

Droop control has been widely applied in DC microgrids (MGs) due to its inherent modularity and ease of implementation. Among the different droop control methods that can be adopted in DC MGs, two options have been considered in this paper; I-V and V... Read More about Comparative stability analysis of droop control approaches in voltage-source-converter-based DC microgrids.

Model predictive control for a dual active bridge inverter with a floating bridge (2016)
Journal Article
Chowdhury, S., Wheeler, P., Gerada, C., & Patel, C. (2016). Model predictive control for a dual active bridge inverter with a floating bridge. IEEE Transactions on Industrial Electronics, 63(9), 5558-5568. https://doi.org/10.1109/TIE.2016.2564949

This paper presents a Model Predictive Control technique applied to a dual active bridge inverter where one of the bridges is floating. The proposed floating bridge topology eliminates the need for isolation transformer in a dual inverter system and... Read More about Model predictive control for a dual active bridge inverter with a floating bridge.

A multi-level converter with a floating bridge for open-ended winding motor drive applications (2016)
Journal Article
Chowdhury, S., Wheeler, P., Patel, C., & Gerada, C. (2016). A multi-level converter with a floating bridge for open-ended winding motor drive applications. IEEE Transactions on Industrial Electronics, 63(9), 5366-5375. https://doi.org/10.1109/TIE.2016.2561265

This paper presents a dual three phase open end winding induction motor drive. The drive consists of a three phase induction machine with open stator phase windings and dual bridge inverter supplied from a single DC voltage source. To achieve multi-l... Read More about A multi-level converter with a floating bridge for open-ended winding motor drive applications.

Analysis of wavelet controller for robustness in electronic differential of electric vehicles: an investigation and numerical developments (2016)
Journal Article
Daya, F. J., Sanjeevikumar, P., Blaabjerg, F., Wheeler, P., Olorunfemi Ojo, J., & Ertas, A. H. (in press). Analysis of wavelet controller for robustness in electronic differential of electric vehicles: an investigation and numerical developments. Electric Power Components and Systems, 44(7), https://doi.org/10.1080/15325008.2015.1131771

In road transportation systems, differential plays an important role in preventing the vehicle from slipping on curved tracks. In practice, mechanical differentials are used, but they are bulky because of their increased weight. Moreover, they are no... Read More about Analysis of wavelet controller for robustness in electronic differential of electric vehicles: an investigation and numerical developments.

Experimental implementation of a linear control technique for a single-phase matrix converter (2016)
Conference Proceeding
Rivera, M., Rojas, S., Wheeler, P., & Yaramasu, V. (2016). Experimental implementation of a linear control technique for a single-phase matrix converter.

This paper describes a matrix converter with a three-phase input and single-phase output that can be used as a building block for high-power cascaded converters. In this paper a sinusoidal pulse width modulation technique with a linear controller is... Read More about Experimental implementation of a linear control technique for a single-phase matrix converter.

Predictive control in matrix converters. Part I, Principles, topologies and applications (2016)
Conference Proceeding
Rivera, M., Wheeler, P., & Olloqui, A. (2016). Predictive control in matrix converters. Part I, Principles, topologies and applications.

This paper presents an overview of the predictive control principles applied to matrix converters and also the different topologies where this control technique is applied. It will be shown that the predictive strategy is a promising alternative to c... Read More about Predictive control in matrix converters. Part I, Principles, topologies and applications.

Predictive control in matrix converters. Part II, Control strategies, weaknesses and trends (2016)
Conference Proceeding
Rivera, M., Wheeler, P., & Olloqui, A. (2016). Predictive control in matrix converters. Part II, Control strategies, weaknesses and trends.

The second part of this paper presents an overview of different control strategies and applications for matrix converters (MCs) where predictive control techniques are applied. It will be shown that predictive control is a promising alternative to co... Read More about Predictive control in matrix converters. Part II, Control strategies, weaknesses and trends.

A novel double quad-inverter configuration for multilevel twelve-phase open-winding converter (2016)
Conference Proceeding
Padmanaban, S., Blaabjerg, F., Wheeler, P., Ojo Olorunfemi, J., & Maroti, P. K. (2016). A novel double quad-inverter configuration for multilevel twelve-phase open-winding converter.

This paper work articulates the novel proposal of double quad-inverter configuration for multilevel twelve-phase open-winding ac converter. Modular power units are developed from reconfigured eight classical three-phase voltage source inverters (VSIs... Read More about A novel double quad-inverter configuration for multilevel twelve-phase open-winding converter.

An analytical modeling and estimating losses of power semiconductors in a three-phase dual active bridge converter for MVDC grids (2016)
Conference Proceeding
Lee, Y., Vakil, G., Watson, A. J., & Wheeler, P. (2016). An analytical modeling and estimating losses of power semiconductors in a three-phase dual active bridge converter for MVDC grids.

Due to the increasing installation of renewable and decentralized power sources, Medium-voltage dc (MVDC) grids has been considered for an alternative application to medium-voltage ac (MVAC) application. Three-phase dual active bridge DC-DC (3DAB) co... Read More about An analytical modeling and estimating losses of power semiconductors in a three-phase dual active bridge converter for MVDC grids.

Open-end winding induction machine fed by a dual-output indirect matrix converter (2016)
Journal Article
Riedmann, J., Clare, J. C., Wheeler, P., Blasco Giménez, R., Rivera, M., & Pena, R. (2016). Open-end winding induction machine fed by a dual-output indirect matrix converter. IEEE Transactions on Industrial Electronics, 63(7), 4118-4128. https://doi.org/10.1109/TIE.2016.2531020

Open-ended winding induction machines fed from standard two-level Voltage Source Inverters (VSI) provide an attractive arrangement for AC drives. An alternative approach is to use a dual output Indirect Matrix Converter (IMC). It is well known that t... Read More about Open-end winding induction machine fed by a dual-output indirect matrix converter.

A predictive control strategy for a single-phase AC-AC converter (2016)
Conference Proceeding
Rivera, M., Rojas, S., Wheeler, P., & Rodriguez, J. (2016). A predictive control strategy for a single-phase AC-AC converter.

This paper presents a finite control set model predictive current control strategy with a prediction horizon of one sampling time to control the single-phase matrix converter. The proposed current control strategy is based on a prediction calculation... Read More about A predictive control strategy for a single-phase AC-AC converter.

A review of predictive control techniques for matrix converters: part I (2016)
Conference Proceeding
Rivera, M., Wheeler, P., Olloqui, A., & Khaburi, D. (2016). A review of predictive control techniques for matrix converters: part I.

The predictive strategy is a promising alternative to control matrix converters and due to its simplicity and flexibility to include additional aspects in the control, its implementation can be extended to different topologies and industrial applicat... Read More about A review of predictive control techniques for matrix converters: part I.

A review of predictive control techniques for matrix converters: part II (2016)
Conference Proceeding
Rivera, M., Wheeler, P., Olloqui, A., & Khaburi, D. (2016). A review of predictive control techniques for matrix converters: part II.

The second part of this paper presents an overview of different control strategies and applications for matrix converters (MCs) where predictive control techniques are applied. It will be shown that predictive control is a promising alternative to co... Read More about A review of predictive control techniques for matrix converters: part II.

Common-mode voltage reduction for matrix converters using all valid switch states (2016)
Journal Article
Guan, Q., Wheeler, P., Guan, Q., & Yang, P. (2016). Common-mode voltage reduction for matrix converters using all valid switch states. IEEE Transactions on Power Electronics, 31(12), 8247-8259. https://doi.org/10.1109/TPEL.2016.2515645

This paper presents a new space vector modulation(SVM) strategy for matrix converters to reduce the common-mode voltage (CMV). The reduction is achieved by using the switch states that connect each input phase to a different output phase, or the swit... Read More about Common-mode voltage reduction for matrix converters using all valid switch states.

Active DC-link capacitor harmonic current reduction in two-level back-to-back converter (2015)
Journal Article
Shen, L., Bozhko, S., Asher, G., Patel, C., & Wheeler, P. (2015). Active DC-link capacitor harmonic current reduction in two-level back-to-back converter. IEEE Transactions on Power Electronics, 31(10), https://doi.org/10.1109/TPEL.2015.2511304

The paper proposes a method of active switching harmonics current reduction in the DC-link capacitor of a two-level, three-phase, back-to-back converter. Based on the derived analytical solution for switching harmonic currents in the DC-link, it is s... Read More about Active DC-link capacitor harmonic current reduction in two-level back-to-back converter.

An improved voltage compensation approach in a droop-controlled DC power system for the more electric aircraft (2015)
Journal Article
Gao, F., Bozhko, S., Asher, G., Wheeler, P., & Patel, C. (2015). An improved voltage compensation approach in a droop-controlled DC power system for the more electric aircraft. IEEE Transactions on Power Electronics, 31(10), https://doi.org/10.1109/TPEL.2015.2510285

This paper proposes an improved voltage regulation method in multi-source based DC electrical power system in the more electric aircraft. The proposed approach, which can be used in terrestrial DC microgrids as well, effectively improves the load sha... Read More about An improved voltage compensation approach in a droop-controlled DC power system for the more electric aircraft.

Wavelet-fuzzy speed indirect field oriented controller for three-phase AC motor drive – Investigation and implementation (2015)
Journal Article
Padmanaban, S., Daya, F. J., Blaabjerg, F., Wheeler, P., Szcześniak, P., Oleschuk, V., & H.Ertas, A. (2016). Wavelet-fuzzy speed indirect field oriented controller for three-phase AC motor drive – Investigation and implementation. Engineering Science and Technology, an International Journal, 19(3), https://doi.org/10.1016/j.jestch.2015.11.007

Three-phase voltage source inverter driven induction motor is used in many medium- and high-power applications. Precision in speed of the motor play vital role, i.e. popular methods of direct/indirect field-oriented control (FOC) are applied. FOC is... Read More about Wavelet-fuzzy speed indirect field oriented controller for three-phase AC motor drive – Investigation and implementation.

Electrical braking in matrix converter for more electric aircraft: bi-directional switch and input power clamp methods (2015)
Journal Article
Munuswamy, I., & Wheeler, P. (2015). Electrical braking in matrix converter for more electric aircraft: bi-directional switch and input power clamp methods. Journal of Low Power Electronics and Applications, 11(4), https://doi.org/10.1166/jolpe.2015.1414

Current aircraft power quality specifications do not allow regeneration onto the power bus. Therefore, the inherent regeneration available from Matrix Converter (MC) is not desirable in More Electric Aircraft (MEA) aerospace applications. In this pap... Read More about Electrical braking in matrix converter for more electric aircraft: bi-directional switch and input power clamp methods.

A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier (2015)
Journal Article
Song, W., Xing, F., Yang, H., Empringham, L., De Lillo, L., Wheeler, P., …Zhong, Y. (2015). A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier. IEEE Journal of Emerging and Selected Topics in Power Electronics, 4(2), https://doi.org/10.1109/JESTPE.2015.2503125

This paper presents a solution to the control of the three times fundamental frequency fluctuation of the neutral-point in a VIENNA rectifier. A hybrid method combining a dynamic adjustment factor with a voltage deviation control of the split DC-link... Read More about A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier.

Investigations in the Modeling and Control of a Medium-Voltage Hybrid Inverter System That Uses a Low-Voltage/Low-Power Rated Auxiliary Current Source Inverter (2015)
Journal Article
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2016). Investigations in the Modeling and Control of a Medium-Voltage Hybrid Inverter System That Uses a Low-Voltage/Low-Power Rated Auxiliary Current Source Inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics, 4(1), 126-140. https://doi.org/10.1109/JESTPE.2015.2488631

Hybrid converters consist of a main inverter processing the bulk of the power with poor waveform performance and a fast and versatile auxiliary inverter to correct the distortion. In this paper, the main converter is a medium voltage NPC inverter and... Read More about Investigations in the Modeling and Control of a Medium-Voltage Hybrid Inverter System That Uses a Low-Voltage/Low-Power Rated Auxiliary Current Source Inverter.

Short-circuit fault analysis and isolation strategy for matrix converters (2015)
Journal Article
Wang, L., De Lillo, L., Brunson, C., Empringham, L., & Wheeler, P. (in press). Short-circuit fault analysis and isolation strategy for matrix converters. Journal of Central South University of Technology, 22(9), https://doi.org/10.1007/s11771-015-2886-y

The behavior of matrix converter (MC) drive systems under the condition of MC short-circuit faults is comprehensively investigated. Two isolation strategies using semiconductors and high speed fuses (HSFs) for MC short-circuit faults are examined and... Read More about Short-circuit fault analysis and isolation strategy for matrix converters.

Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition (2015)
Journal Article
Padmanaban, S., Grandi, G., Blaabjerg, F., Wheeler, P., & Ojo, J. O. (2016). Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition. Engineering Science and Technology, an International Journal, 19(1), https://doi.org/10.1016/j.jestch.2015.07.007

This research article exploits the power management algorithm in post-fault conditions for a six-phase (quad) multilevel inverter. The drive circuit consists of four 2-level, three-phase voltage source inverter (VSI) supplying a six-phase open-end wi... Read More about Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition.

Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter (2015)
Journal Article
Shao, S., Watson, A. J., Clare, J. C., & Wheeler, P. (2016). Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter. IEEE Transactions on Power Electronics, 31(5), 3794-3805. https://doi.org/10.1109/TPEL.2015.2462717

This paper presents a fault detection and isolation (FDI) method for open-circuit faults of power semiconductor devices in a modular multilevel converter (MMC). The proposed FDI method is simple with only one sliding mode observer (SMO) equation and... Read More about Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter.

Speed Finite Control Set Model Predictive Control of a PMSM fed by Matrix Converter (2015)
Journal Article
Formentini, A., Trentin, A., Marchesoni, M., Zanchetta, P., & Wheeler, P. (2015). Speed Finite Control Set Model Predictive Control of a PMSM fed by Matrix Converter. IEEE Transactions on Industrial Electronics, 62(11), https://doi.org/10.1109/TIE.2015.2442526

This paper presents a new speed Finite Control Set Model Predictive Control (FCS-MPC) algorithm which has been applied to a Permanent Magnet Synchronous Motor (PMSM) driven by a Matrix Converter (MC). This method replaces the classical cascaded contr... Read More about Speed Finite Control Set Model Predictive Control of a PMSM fed by Matrix Converter.

Implementation of wavelet-based robust differential control for electric vehicle application (2015)
Journal Article
Febin Daya, J., Sanjeevikumar, P., Blaabjerg, F., Wheeler, P., & Ojo Olorunfemi, J. (2015). Implementation of wavelet-based robust differential control for electric vehicle application. IEEE Transactions on Power Electronics, 30(12), https://doi.org/10.1109/TPEL.2015.2440297

This research letter presents the modeling and simulation of electronic differential, employing a novel wavelet controller for two brushless dc motors. The proposed controller uses discrete wavelet transform to decompose the error between actual and... Read More about Implementation of wavelet-based robust differential control for electric vehicle application.

Self-tuning resonant control of a 7-leg back-to-back converter for interfacing variable speed generators to 4-wire loads (2015)
Journal Article
Cardenas, R., Espina, E., Clare, J. C., & Wheeler, P. (2015). Self-tuning resonant control of a 7-leg back-to-back converter for interfacing variable speed generators to 4-wire loads. IEEE Transactions on Industrial Electronics, 62(7), https://doi.org/10.1109/TIE.2015.2409803

This paper considers the control of a 7-leg back-to-back Voltage Source Inverter (VSI) arrangement feeding a 4-wire load from a 3-phase Permanent Magnet Synchronous Generator (PMSG) operating at variable speed. The PMSG is controlled using a sensorle... Read More about Self-tuning resonant control of a 7-leg back-to-back converter for interfacing variable speed generators to 4-wire loads.

Experimental comparison of a matrix converter using Si IGBT and SiC MOSFETs (2015)
Journal Article
Trentin, A., De Lillo, L., Empringham, L., Wheeler, P., & Clare, J. C. (2015). Experimental comparison of a matrix converter using Si IGBT and SiC MOSFETs. IEEE Journal of Emerging and Selected Topics in Power Electronics, 3(2), https://doi.org/10.1109/JESTPE.2014.2381001

This paper presents an analytical and experimental comparison between comparable Silicon (Si) IGBTs and Silicon Carbide (SiC) MOSFETS when used in a direct AC/AC matrix converter circuit. The switching performance of the two devices is analysed and t... Read More about Experimental comparison of a matrix converter using Si IGBT and SiC MOSFETs.

Multi-objective modulated Model Predictive Control for a multilevel solid state transformer (2015)
Journal Article
Tarisciotti, L., Zanchetta, P., Watson, A. J., Wheeler, P., Clare, J. C., & Bifaretti, S. (2015). Multi-objective modulated Model Predictive Control for a multilevel solid state transformer. IEEE Transactions on Industry Applications, 51(5), https://doi.org/10.1109/TIA.2015.2429113

Finite Control Set Model Predictive Control (FCS-MPC) offers many advantages over more traditional control techniques, such as the ability to avoid cascaded control loops, easy inclusion of constraint and fast transient response of the control system... Read More about Multi-objective modulated Model Predictive Control for a multilevel solid state transformer.

A four-legs matrix converter ground power unit with repetitive voltage control (2014)
Journal Article
Rohuma, W., Zanchetta, P., Wheeler, P., & Empringham, L. (2015). A four-legs matrix converter ground power unit with repetitive voltage control. IEEE Transactions on Industrial Electronics, 62(4), https://doi.org/10.1109/TIE.2014.2379585

In this paper, a four-leg matrix converter is proposed as the power conversion core for aircraft ground power unit (GPU) applications. This structure allows easy management of unbalanced and nonlinear loads with minimal disruption of the power supply... Read More about A four-legs matrix converter ground power unit with repetitive voltage control.

Open circuit fault detection and diagnosis in matrix converters (2014)
Journal Article
Brunson, C., Empringham, L., De Lillo, L., Wheeler, P., & Clare, J. C. (2014). Open circuit fault detection and diagnosis in matrix converters. IEEE Transactions on Power Electronics, 30(5), https://doi.org/10.1109/TPEL.2014.2364152

With the increased use of power electronics in aerospace, automotive, industrial, and energy generation sectors, the demand for highly reliable and power dense solutions has increased. Matrix converters become attractive when taking into account dema... Read More about Open circuit fault detection and diagnosis in matrix converters.

A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI (2014)
Conference Proceeding
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2014). A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI. In 2014 IEEE Energy Conversion Congress and Exposition (ECCE). https://doi.org/10.1109/ecce.2014.6953779

Hybrid converters consist of a main inverter processing the bulk of the power with poor waveform performance and a fast and versatile auxiliary inverter to correct the distortion. In this paper, the main converter is a medium voltage NPC inverter and... Read More about A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI.

Power conversion for a novel AC/DC aircraft electrical distribution system (2014)
Journal Article
Trentin, A., Zanchetta, P., Wheeler, P., & Clare, J. C. (2014). Power conversion for a novel AC/DC aircraft electrical distribution system. IET Electrical Systems in Transportation, 4(2), https://doi.org/10.1049/iet-est.2013.0005

This paper proposes a novel and compact AC/DC electrical distribution system for new generation aircraft. In these new aircraft power systems, all loads are fed by two dc bus systems: at 28V and at +/-270V. The electrical distribution system, whose d... Read More about Power conversion for a novel AC/DC aircraft electrical distribution system.

A hybrid inverter solution for medium voltage applications using series capacitor and a CSI Active Power Filter (SC-APF) (2014)
Conference Proceeding
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2014). A hybrid inverter solution for medium voltage applications using series capacitor and a CSI Active Power Filter (SC-APF). In 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014). https://doi.org/10.1049/cp.2014.0456

This paper proposes a new hybrid inverter solution for medium/high voltage applications that consists of a slow switching inverter using high voltage or series connected switching devices, fitted with a low kVA rated auxiliary current source inverter... Read More about A hybrid inverter solution for medium voltage applications using series capacitor and a CSI Active Power Filter (SC-APF).

Active DC voltage balancing PWM technique for high-power cascaded multilevel converters (2014)
Journal Article
Tarisciotti, L., Zanchetta, P., Watson, A. J., Bifaretti, S., Clare, J. C., & Wheeler, P. (2014). Active DC voltage balancing PWM technique for high-power cascaded multilevel converters. IEEE Transactions on Industrial Electronics, 61(11), https://doi.org/10.1109/TIE.2014.2308139

In this paper a dedicated PWM technique specifically designed for single-phase (or four wire three-phase) multilevel Cascaded H-Bridge Converters is presented. The aim of the proposed technique is to minimize the DC-Link voltage unbalance, independen... Read More about Active DC voltage balancing PWM technique for high-power cascaded multilevel converters.

DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter (2014)
Journal Article
Feldman, R., Farr, E., Watson, A. J., Clare, J. C., & Wheeler, P. (2014). DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter. IET Generation, Transmission and Distribution, 8(1), https://doi.org/10.1049/iet-gtd.2012.0713

HVDC transmission systems are becoming increasingly popular when compared to conventional AC transmission methods. HVDC voltage source converters (VSC) can offer advantages over traditional HVDC current source converter topologies; as such, it is exp... Read More about DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter.

Experimental and analytical performance evaluation of SiC power devices in the matrix converter (2014)
Journal Article
Safari, S., Castellazzi, A., & Wheeler, P. (2014). Experimental and analytical performance evaluation of SiC power devices in the matrix converter. IEEE Transactions on Power Electronics, 29(5), https://doi.org/10.1109/TPEL.2013.2289746

With the commercial availability of SiC power devices, their acceptance is expected grows in consideration to the excellent low switching loss, high temperature operation and high voltage rating capabilities of these devices. This paper presents the... Read More about Experimental and analytical performance evaluation of SiC power devices in the matrix converter.

Fault detection for modular multilevel converters based on sliding mode observer (2013)
Journal Article
Shao, S., Wheeler, P., Clare, J. C., & Watson, A. J. (2013). Fault detection for modular multilevel converters based on sliding mode observer. IEEE Transactions on Power Electronics, 28(11), https://doi.org/10.1109/TPEL.2013.2242093

This letter presents a fault detection method for modular multilevel converters (MMC) which is capable of lo¬cating a faulty semiconductor switching device in the circuit. The proposed fault detection method is based on a sliding mode observer (SMO)... Read More about Fault detection for modular multilevel converters based on sliding mode observer.

Space-vector-modulated three-level inverters with a single Z-source network (2012)
Journal Article
Effah, F. B., Wheeler, P., Clare, J. C., & Watson, A. J. (in press). Space-vector-modulated three-level inverters with a single Z-source network. IEEE Transactions on Power Electronics, 28(6), https://doi.org/10.1109/TPEL.2012.2219627

The Z-source inverter is a relatively recent converter topology that exhibits both voltage-buck and voltage-boost capability. The Z-source concept can be applied to all dc-to-ac, ac-to-dc, ac-to-ac, and dc-to-dc power conversion whether two-level or... Read More about Space-vector-modulated three-level inverters with a single Z-source network.

A thermal improvement technique for phase windings of electrical machines (2011)
Journal Article
Galea, M., Gerada, C., Raminosa, T., & Wheeler, P. (2012). A thermal improvement technique for phase windings of electrical machines. IEEE Transactions on Industry Applications, 48(1), https://doi.org/10.1109/TIA.2011.2175470

In electrical machines, a higher torque/force density can usually be achieved by increasing the current density in the windings. However, the resulting increase in copper losses leads to higher temperatures in the coils, especially in the centre of t... Read More about A thermal improvement technique for phase windings of electrical machines.

Implementation of a hybrid AC-AC direct power converter with unity voltage transfer (2008)
Journal Article
Wijekoon, T., Klumpner, C., Zanchetta, P., & Wheeler, P. (2008). Implementation of a hybrid AC-AC direct power converter with unity voltage transfer. IEEE Transactions on Power Electronics, 23(4), https://doi.org/10.1109/TPEL.2008.924601

This paper presents a novel hybrid direct power converter (HDPC) which overcomes the two main disadvantages of matrix converters: limited voltage transfer ratio and low immunity to grid disturbance. The proposed converter is formed by integrating a r... Read More about Implementation of a hybrid AC-AC direct power converter with unity voltage transfer.

A new class of hybrid AC/AC direct power converters
Conference Proceeding
Klumpner, C., Wijekoon, T., & Wheeler, P. (in press). A new class of hybrid AC/AC direct power converters. In Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005. https://doi.org/10.1109/IAS.2005.1518793

Variable voltage and variable frequency conversion of electrical energy from an AC source to an AC load is done in traditional power converters via a DC-link where an energy storage element (electrolytic capacitors) is situated. Despite its well-know... Read More about A new class of hybrid AC/AC direct power converters.

A new three-level sparse indirect matrix converter
Conference Proceeding
Klumpner, C., Lee, M. Y., & Wheeler, P. (in press). A new three-level sparse indirect matrix converter. In IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics. https://doi.org/10.1109/IECON.2006.347958

Matrix converters are forced commutated single stage AC/AC direct frequency changers able to achieve sine wave in and out operation by being able to connect any input phase to any output phase via a 3x3 matrix of bi-directional switches. Indirect two... Read More about A new three-level sparse indirect matrix converter.

A new three-level indirect matrix converter with reduced number of switches
Conference Proceeding
Klumpner, C., Lee, M. Y., Pitic, C., Wheeler, P., & Zanchetta, P. (in press). A new three-level indirect matrix converter with reduced number of switches. In 2007 IEEE Industry Applications Annual Meeting. https://doi.org/10.1109/07IAS.2007.28

Matrix converters are sine wave in/out forced commutated single-stage AC/AC direct frequency changers using a single bi-directional switch to connect any input to any output. Indirect two-stage matrix converters provide similar input and output perfo... Read More about A new three-level indirect matrix converter with reduced number of switches.

A more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications
Conference Proceeding
Klumpner, C., Chonlatee, P., & Wheeler, P. (in press). A more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications.

Renewable energy sources such as photovoltaics (PVs) or fuel cells (FCs) are not fitted for direct power grid connection because they deliver DC voltage and current. In addition, they also have a high internal resistance/nonlinear V/I dependence, whi... Read More about A more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications.

A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability
Conference Proceeding
Photong, C., Klumpner, C., & Wheeler, P. (in press). A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability. In 2009 35th Annual Conference of IEEE Industrial Electronics. https://doi.org/10.1109/IECON.2009.5414954

The current source inverter (CSI) is preferred to interface a renewable source such photovoltaics (PV) to the AC power grid because it can provide smooth current source in the DC side, which fits to the PV behaviour and also steps-up the voltage from... Read More about A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability.

Integrated output filter inductor for permanent magnet motor drives
Conference Proceeding
Raza Khowja, M., Gerada, C., Vakil, G., Wheeler, P., & Patel, C. (in press). Integrated output filter inductor for permanent magnet motor drives.

This paper presents a novel approach to integrate the output filter inductor in permanent magnet synchronous motor (PMSM) drive system. The integrated output filter inductor is based on utilizing the motor magnetics as a filter inductance instead of... Read More about Integrated output filter inductor for permanent magnet motor drives.

Superconducting and conventional electromagnetic launch system for civil aircraft assisted take-off
Conference Proceeding
Bertola, L., Cox, T., Wheeler, P., & Garvey, S. D. (in press). Superconducting and conventional electromagnetic launch system for civil aircraft assisted take-off.

This paper compares three possible linear motor topologies for an electromagnetic launch system to assist civil aircraft take-off. Assisted launch of civil aircraft has the potential of reducing the required runway length, reducing noise and emission... Read More about Superconducting and conventional electromagnetic launch system for civil aircraft assisted take-off.