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The Rebirth of the Current Source Inverter: Advantages for Aerospace Motor Design (2019)
Journal Article
Madonna, V., Migliazza, G., Giangrande, P., Lorenzani, E., Buticchi, G., & Galea, M. (2019). The Rebirth of the Current Source Inverter: Advantages for Aerospace Motor Design. IEEE Industrial Electronics Magazine, 13(4), 65-76. https://doi.org/10.1109/MIE.2019.2936319

© 2007-2011 IEEE. It is well known and widely accepted that the voltage source inverter (VSI) now dominates the world of electrical drives. Its success is probably due to its simplicity, high efficiency, and the widespread availability of VSs. This p... Read More about The Rebirth of the Current Source Inverter: Advantages for Aerospace Motor Design.

THREE-LEVEL INDIRECT MATRIX CONVERTER WITH TWO SERIES Z-SOURCE NETWORKS. (2019)
Journal Article
Boafo Effah, F., Okyere, P., Sani Ellis, M., Wheeler, P., Watson, A., Clare, J., & Ojo, J. (2019). THREE-LEVEL INDIRECT MATRIX CONVERTER WITH TWO SERIES Z-SOURCE NETWORKS. Carpathian Journal of Electrical Engineering, 13(1), 61-76

In previous articles, the concept of series Z-source network has been extended to conventional indirect matrix converter to raise the voltage gain to unity and beyond. In this paper, this idea is modified and applied to a three-level indirect matrix... Read More about THREE-LEVEL INDIRECT MATRIX CONVERTER WITH TWO SERIES Z-SOURCE NETWORKS..

Application of Analytic Signal and Smooth Interpolation in Pulsewidth Modulation for Conventional Matrix Converters (2019)
Journal Article
Szczepankowski, P., Wheeler, P., & Bajdecki, T. (2020). Application of Analytic Signal and Smooth Interpolation in Pulsewidth Modulation for Conventional Matrix Converters. IEEE Transactions on Industrial Electronics, 67(12), 10011-10023. https://doi.org/10.1109/tie.2019.2956391

This article proposes an alternative and novel approach to the pulsewidth modulation (PWM) duty cycles computation for conventional matrix converters (CMC) fed by balanced, unbalanced, or nonsinusoidal ac voltage sources. The presented solution simpl... Read More about Application of Analytic Signal and Smooth Interpolation in Pulsewidth Modulation for Conventional Matrix Converters.

Quantitative phase and polarization imaging through an optical fiber applied to detection of early esophageal tumorigenesis (2019)
Journal Article
Gordon, G. S. D., Joseph, J., Alcolea, M. P., Sawyer, T., Williams, C., Fitzpatrick, C. R. M., Jones, P. H., Di Pietro, M., Fitzgerald, R. C., Wilkinson, T. D., & Bohndiek, S. E. (2019). Quantitative phase and polarization imaging through an optical fiber applied to detection of early esophageal tumorigenesis. Journal of Biomedical Optics, 24(12), Article 126004. https://doi.org/10.1117/1.JBO.24.12.126004

© The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. Phase and polarization... Read More about Quantitative phase and polarization imaging through an optical fiber applied to detection of early esophageal tumorigenesis.

The potential of exploiting non-symmetric structures in electrical machines (2019)
Presentation / Conference Contribution
Nuzzo, S., Marfoli, A., Papini, L., Bolognesi, P., Gerada, C., & Galea, M. (2019, October). The potential of exploiting non-symmetric structures in electrical machines. Presented at 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), Lisbon, Portugal

Typically, electrical machines feature rotor and stator winding configurations and core structures which comply with both simplicity and cost requirements. Such constraints limit the design search space and degrees of freedom, thus leading to exploit... Read More about The potential of exploiting non-symmetric structures in electrical machines.

An Improved Control Strategy for Switched Reluctance Generator System in More Electric Aircraft (2019)
Presentation / Conference Contribution
Velmurugan, G., YEOH, S. S., Yang, T., & Bozhko, S. (2019, December). An Improved Control Strategy for Switched Reluctance Generator System in More Electric Aircraft. Presented at 5th IEEE Southern Power Electronics Conference & 15th Brazilian Power Electronics Conference (COBEP/SPEC 2019)), Sao Paulo, Brazil

Switched Reluctance Machines (SRM) has emerged as an important possible technology for usage in More Electric Aircraft (MEA) in particular as a starter/generator. As a starter/generator, the SRM operates as a generator as well as a motor (starter). T... Read More about An Improved Control Strategy for Switched Reluctance Generator System in More Electric Aircraft.

Predictive Voltage Control Operating at Fixed Switching Frequency of a Neutral-Point Clamped Converter (2019)
Presentation / Conference Contribution
Herrera, F., Cárdenas, R., Rivera, M., Riveros, J. A., & Wheeler, P. (2019, December). Predictive Voltage Control Operating at Fixed Switching Frequency of a Neutral-Point Clamped Converter. Presented at 2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC), Sao Paulo, Brazil

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.

Reliability Analysis of aircraft starter generator drive converter (2019)
Presentation / Conference Contribution
Harikumaran, J., Buticchi, G., Galea, M., Costabeber, A., & Wheeler, P. (2019, December). Reliability Analysis of aircraft starter generator drive converter. Presented at 2019 - 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC), Sao Paolo, Brazil

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.

Multi-modular scalable DC-AC power converter for current injection to the grid based on predictive voltage control (2019)
Presentation / Conference Contribution
Toledo, S., Rivera, M., Maqueda, E., Ayala, M., Pacher, J., Romero, C., Gregor, R., Dragicevic, T., & Wheeler, P. (2019, December). Multi-modular scalable DC-AC power converter for current injection to the grid based on predictive voltage control. Presented at 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC 2019), Sao Paolo, Brazil

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)
Presentation / Conference Contribution
Khera, F. A., Wheeler, P. W., & Klumpner, C. (2019, December). Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting. Presented at 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC 2019), Sao Paolo, Brazil

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)
Presentation / Conference Contribution
Wang, Q., Rivera, M., Riveros, J. A., & Wheeler, P. (2019, December). Modulated Model Predictive Current Control for PMSM Operating With Three-level NPC Inverter. Presented at 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC 2019), San Paolo, Brazil

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.

Predictive Voltage Control of the Direct Matrix Converter applied to Grid Current Injection (2019)
Presentation / Conference Contribution
Toledo, S., Rivera, M., Dragicevic, T., Caballero, D., Wheeler, P., & Gregor, R. (2019, November). Predictive Voltage Control of the Direct Matrix Converter applied to Grid Current Injection. Presented at IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON 2019)), Valparaiso, Chile

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.

PWM-Based Optimal Model Predictive Control for Variable Speed Generating Units (2019)
Journal Article
Bigarelli, L., di Benedetto, M., Lidozzi, A., Solero, L., Odhano, S. A., & Zanchetta, P. (2020). PWM-Based Optimal Model Predictive Control for Variable Speed Generating Units. IEEE Transactions on Industry Applications, 56(1), 541-550. https://doi.org/10.1109/tia.2019.2955662

This article investigates the dc-link voltage control of an active rectifier that is supplied by a variable speed permanent magnet synchronous generator. This configuration is commonly encountered in gearless wind energy conversion systems as well as... Read More about PWM-Based Optimal Model Predictive Control for Variable Speed Generating Units.

Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle (2019)
Presentation / Conference Contribution
La Rocca, S., La Rocca, A., Walker, A., Vakil, G., Gerada, D., Al-Ani, M., Zou, T., Ramanathan, R., Gerada, C., McQueen, A., & Paciura, K. (2019, October). Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle. Presented at International Conference on Electrotechnical Complexes and Systems (ICOECS 2019), Ufa, Russia

Computational Fluid Dynamics (CFD) was used to carry out a fluid flow and thermal investigation of a high power dense traction machine for electric commercial vehicle. One of the features of the machine design considered is the high Length/Diameter (... Read More about Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle.

Piecewise Modelling Approach for Specific Switched Reluctance Machines (2019)
Presentation / Conference Contribution
Velmurugan, G., Yeoh, S. S., Yang, T., & Bozhko, S. (2019, October). Piecewise Modelling Approach for Specific Switched Reluctance Machines. Presented at 2019 International Conference on Electrotechnical Complexes and Systems (ICOECS), Ufa, Russia

Switched Reluctance Machine (SRM) is a very basic and simple electrical machine in structure with winding only at its stator. SRM has widely been considered for possible usages in modern aircrafts through the development of More Electric Aircraft (ME... Read More about Piecewise Modelling Approach for Specific Switched Reluctance Machines.

Fast and Accurate Multi-Physics Model for Optimization-based Design of VSBBC (2019)
Presentation / Conference Contribution
Cheong, B., Giangrande, P., Zhang, X., Galea, M., Zanchetta, P., & Wheeler, P. (2019, October). Fast and Accurate Multi-Physics Model for Optimization-based Design of VSBBC. Presented at 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), Lisbon, Portugal

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.

An enhanced second carrier harmonic cancellation method for multi-source DC electric power systems (2019)
Presentation / Conference Contribution
Wang, C., Yang, T., Bozhko, S., & Kulsangcharoen, P. (2019, October). An enhanced second carrier harmonic cancellation method for multi-source DC electric power systems. Presented at 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), Lisbon, Portugal

Multi-source DC power systems have been widely used in electric transportations, including more-electric aircraft, electric ship and electric vehicles. These systems normally involve in power electronic converters whose switching actions may cause cu... Read More about An enhanced second carrier harmonic cancellation method for multi-source DC electric power systems.

High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles (2019)
Presentation / Conference Contribution
Kumar, R. M. R., Zou, T., La Rocca, A., Vakil, G., Gerada, D., Walker, A., Gerada, C., Paciura, K., McQueen, A., & Fernandes, B. G. (2019, October). High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles. Presented at 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), Lisbon, Portugal

High power density and high torque density are the fundamental requirements for electric machines used in traction application. The former is obtained by potentially increasing the speed of the machine while the latter by using high energy density ra... Read More about High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles.

Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier (2019)
Presentation / Conference Contribution
Kumar, R. M. R., Vakil, G., Gerada, D., Walker, A., La Rocca, S., Al-Ani, M., Gerada, C., Paciura, K., McQueen, A., & Fernandes, B. G. (2019, October). Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier. Presented at 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), Lisbon, Portugal

Electrical machines with high torque density are required for traction application. Availability of bonded magnets with complex shapes and magnetization pattern can significantly extend the design space of electrical machines. This paper introduces a... Read More about Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier.