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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.

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., …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). The potential of exploiting non-symmetric structures in electrical machines. In IECON 2019 Proceedings - 45th Annual Conference of the IEEE Industrial Electronics Society (1393-1398). https://doi.org/10.1109/IECON.2019.8927001

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.

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). 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.

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). An Improved Control Strategy for Switched Reluctance Generator System in More Electric Aircraft.

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.

Reliability Analysis of aircraft starter generator drive converter (2019)
Presentation / Conference Contribution
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 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). 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)
Presentation / Conference Contribution
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)
Presentation / Conference Contribution
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.

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. (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.

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.

Trade-off Study of a High Power Density Starter-Generator for Turboprop Aircraft System (2019)
Presentation / Conference Contribution
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.

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). An enhanced second carrier harmonic cancellation method for multi-source DC electric power systems. In Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (2610-2615). https://doi.org/10.1109/IECON.2019.8927821

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.

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., …Fernandes, B. G. (2019). Enhancing the Torque Density of Conventional PM-SynRel Machine with Hybrid Flux Barrier. In IECON 2019 Proceedings - 45th Annual Conference of the IEEE Industrial Electronics Society (4347-4352). https://doi.org/10.1109/IECON.2019.8926624

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.

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., …Fernandes, B. G. (2019). High Power High Speed PM-Assisted SynRel Machines with Ferrite and Rare Earth Magnets for Future Electric Commercial Vehicles. In IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (1083-1088). https://doi.org/10.1109/IECON.2019.8927523

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.

Piecewise Modelling Approach for Specific Switched Reluctance Machines (2019)
Presentation / Conference Contribution
Velmurugan, G., Yeoh, S. S., Yang, T., & Bozhko, S. (2019). Piecewise Modelling Approach for Specific Switched Reluctance Machines. In 2019 International Conference on Electrotechnical Complexes and Systems (ICOECS) (1-4). https://doi.org/10.1109/icoecs46375.2019.8949974

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.

A Parallel Connected Unfolding Bridge (PCUB) Multilevel Converter for HVDC Applications (2019)
Presentation / Conference Contribution
Hassan, Z., Costabeber, A., Tardelli, F., Watson, A., & Clare, J. (2019). A Parallel Connected Unfolding Bridge (PCUB) Multilevel Converter for HVDC Applications. In IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (5703-5708). https://doi.org/10.1109/IECON.2019.8927297

© 2019 IEEE. Hybrid Voltage Source Converters (VSC), that combine the conventional three-level VSCs and Modular Multilevel Chain-Links (CLs), offer a promising solution for future HVDC stations, achieving reduced footprint with respect to the MMC whi... Read More about A Parallel Connected Unfolding Bridge (PCUB) Multilevel Converter for HVDC Applications.

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., …Paciura, K. (2019). Numerical study of the impact of different cooling arrangements on a high length/diameter ratio motor for electric commercial vehicle. In Proceedings: 2019 International Conference on Electrotechnical Complexes and Systems (ICOECS) (1-5). https://doi.org/10.1109/ICOECS46375.2019.8949929

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.