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Mild hybridisation of turboprop engine with high-power-density integrated electric drives (2022)
Journal Article
Cossart, G., Chen, Y., Yang, T., Khowja, M., La Rocca, A., Nasir, U., …Wheeler, P. (2022). Mild hybridisation of turboprop engine with high-power-density integrated electric drives. IEEE Transactions on Transportation Electrification, 8(4), 4148-4162. https://doi.org/10.1109/TTE.2022.3160153

This paper shares with the aerospace community a case study of turboprop mild hybridisation using a recently developed integrated drive system in the University of Nottingham, UK, within the ACHIEVE project under EU H2020 CleanSky 2 program (project... Read More about Mild hybridisation of turboprop engine with high-power-density integrated electric drives.

Design Optimization of Modular Permanent Magnet Machine with Triple Three-Phase for Aircraft Starter Generator (2022)
Presentation / Conference Contribution
Wang, B., Rocca, A., Vakil, G., Yang, T., & Gerada, C. (2022). Design Optimization of Modular Permanent Magnet Machine with Triple Three-Phase for Aircraft Starter Generator. SAE Technical Papers, https://doi.org/10.4271/2022-01-0055

Permanent magnet (PM) electrical machine has far-reaching impacts in aviation electrification due to the continuous development in high power density and high efficiency electrical drives. The primary barrier to acceptance of permanent magnet machine... Read More about Design Optimization of Modular Permanent Magnet Machine with Triple Three-Phase for Aircraft Starter Generator.

Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles (2022)
Journal Article
Huang, Z., Tang, M., Golovanov, D., Yang, T., Herring, S., Zanchetta, P., & Gerada, C. (2022). Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles. IEEE Transactions on Transportation Electrification, 8(3), 3451--3463. https://doi.org/10.1109/TTE.2022.3152845

High-speed permanent magnet (PM) machines have been recognized as a popular choice for plug-in hybrid electric vehicles (PHEVs). Although high-speed operation can enhance the machine power density, more rotor eddy current losses can be expected. Thos... Read More about Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles.

Comparative Study of Sensorless Methods Based on Sliding Mode Observer for Dual Three-Phase Permanent Magnet Synchronous Machine (2021)
Presentation / Conference Contribution
Fan, L., Yang, T., Chen, Y., & Bozhko, S. (2021). Comparative Study of Sensorless Methods Based on Sliding Mode Observer for Dual Three-Phase Permanent Magnet Synchronous Machine. In The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020) (850-854). https://doi.org/10.1049/icp.2021.1133

In recent years, increased attentions have been given to multiphase electrical machines because of their fault tolerance ability which is quite important for more-electric aircraft application. A dual three-phase PMSM for turboprop aircraft green tax... Read More about Comparative Study of Sensorless Methods Based on Sliding Mode Observer for Dual Three-Phase Permanent Magnet Synchronous Machine.

Model predictive control for a dual three-phase two-sector permanent magnet synchronous machine (2021)
Presentation / Conference Contribution
Chen, Y., Yang, T., Bozhko, S., Nasir, U., Rodriguez, J. R., & Garcia, C. F. (2021). Model predictive control for a dual three-phase two-sector permanent magnet synchronous machine. In 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020) (581–585). https://doi.org/10.1049/icp.2021.1134

A novel dual three-phase permanent magnet synchronous machine is designed for taxiing motor-generator on propeller aircraft. The unique structre of machine enhances system reliability, and also brings extra merits such as reducing torque ripple when... Read More about Model predictive control for a dual three-phase two-sector permanent magnet synchronous machine.

An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives (2021)
Journal Article
Li, C., Yang, T., Huang, Z., Yeoh, S. S., Bozhko, S., & Wheeler, P. (2021). An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives. IEEE Access, 9, 144805-144819. https://doi.org/10.1109/access.2021.3122922

This paper introduces an advanced space vector modulation technique for three-level neutral-point-clamped (3L-NPC) converters. The studied 3L-NPC converters within aircraft electric starter generator (ESG) systems normally operate at high modulation... Read More about An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives.

An Enhanced Droop Control Method for multi-source Electric Power System of More Electric Aircraft (2021)
Presentation / Conference Contribution
Hussaini, H., Yang, T., Wang, C., & Bozho, S. (2021, October). An Enhanced Droop Control Method for multi-source Electric Power System of More Electric Aircraft. Paper presented at MEA2021, Bordeaux, France

The more electric aircraft concept has been identified as the major trend of future aircraft. The DC distribution network where multiple electrical sources are connected to a common HVDC bus is a promising architecture for more electric aircraft appl... Read More about An Enhanced Droop Control Method for multi-source Electric Power System of More Electric Aircraft.

A Simple PWM Strategy for Three-Level NPC Converters in Aircraft Electric Starter/Generator System With Improved DC-Link Voltage Utilization and Reduced Common-Mode Voltage (2021)
Presentation / Conference Contribution
Guo, F., Yang, T., Yeoh, S. S., Bozhko, S., Wheeler, P., & Diab, A. M. (2021). A Simple PWM Strategy for Three-Level NPC Converters in Aircraft Electric Starter/Generator System With Improved DC-Link Voltage Utilization and Reduced Common-Mode Voltage. . https://doi.org/10.1109/ECCE47101.2021.9595933

Due to the employment of three-level neutral-point-clamped (3L-NPC) converters in the aircraft electric starter/generator (ESG) systems, the pulse-width-modulation (PWM) strategy plays a significant role in the converter-fed PMSM drives. However, the... Read More about A Simple PWM Strategy for Three-Level NPC Converters in Aircraft Electric Starter/Generator System With Improved DC-Link Voltage Utilization and Reduced Common-Mode Voltage.

Neural Network aided PMSM multi-objective design and optimization for more-electric aircraft applications (2021)
Journal Article
Gao, Y., Yang, T., Bozhko, S., Wheeler, P., Dragicevic, T.-L., & Gerada, C. (2022). Neural Network aided PMSM multi-objective design and optimization for more-electric aircraft applications. Chinese Journal of Aeronautics, 35(10), 233-246. https://doi.org/10.1016/j.cja.2021.08.006

This study uses the Neural Network (NN) technique to optimize design of surface-mounted Permanent Magnet Synchronous Motors (PMSMs) for More-Electric Aircraft (MEA) applications. The key role of NN is to provide dedicated correction factors for the a... Read More about Neural Network aided PMSM multi-objective design and optimization for more-electric aircraft applications.

Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications (2021)
Journal Article
Huang, Z., Yang, T., Giangrande, P., Galea, M., & Wheeler, P. (2021). Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications. IEEE Transactions on Transportation Electrification, 8(2), 1966 - 1980. https://doi.org/10.1109/tte.2021.3113606

Electric drives are an essential part of more electric aircraft (MEA) applications with ever-growing demands for high power density, high performance, and high fault-tolerant capability. High-speed motor drives can fulfil those needs, but their speed... Read More about Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications.

Design Considerations for High-Voltage High-Current Bi-Directional DC Solid-State Circuit Breaker (SSCB) for Aerospace Applications (2021)
Presentation / Conference Contribution
Fayyaz, A., Wang, Z., Ortiz, M. U., Yang, T., & Wheeler, P. (2021). Design Considerations for High-Voltage High-Current Bi-Directional DC Solid-State Circuit Breaker (SSCB) for Aerospace Applications. In 2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe). https://doi.org/10.23919/epe21ecceeurope50061.2021.9570659

Design of a high-voltage and high-current solid-state circuit breaker (SSCB) for aerospace applications is highly challenging, as the overall system should comply with the most stringent operating environment. In addition, the implemented power semic... Read More about Design Considerations for High-Voltage High-Current Bi-Directional DC Solid-State Circuit Breaker (SSCB) for Aerospace Applications.

An Overmodulation Algorithm With Neutral-Point Voltage Balancing for Three-Level Converters in High-Speed Aerospace Drives (2021)
Journal Article
Guo, F., Yang, T., Diab, A. M., Yeoh, S. S., Li, C., Bozhko, S., & Wheeler, P. (2022). An Overmodulation Algorithm With Neutral-Point Voltage Balancing for Three-Level Converters in High-Speed Aerospace Drives. IEEE Transactions on Power Electronics, 37(2), 2021-2032. https://doi.org/10.1109/tpel.2021.3105752

In this article, a virtual space vector based overmodulation algorithm is presented for three-level neutral-point (NP) clamped converters in high-speed aerospace motor drives. With the proposed inscribed polygonal-boundary compression technique, the... Read More about An Overmodulation Algorithm With Neutral-Point Voltage Balancing for Three-Level Converters in High-Speed Aerospace Drives.

An enhanced feedforward flux weakening control for high-speed permanent magnet machine drive applications (2021)
Journal Article
Lang, X., Yang, T., Li, C., Yeoh, S. S., Bozhko, S., & Wheeler, P. (2021). An enhanced feedforward flux weakening control for high-speed permanent magnet machine drive applications. IET Power Electronics, 14(13), 2179-2193. https://doi.org/10.1049/pel2.12170

Permanent magnet machines have been used in the high-speed drive applications due to their high-efficiency, high-power-density, and wide-speed range characteristics. However, control of such high-speed permanent magnet machines machine is always chal... Read More about An enhanced feedforward flux weakening control for high-speed permanent magnet machine drive applications.

Using DC-DC Converters as Active Harmonic Suppression Device for More Electric Aircraft Applications (2021)
Journal Article
Wang, C., Yang, T., Hussaini, H., & Bozhko, S. (2022). Using DC-DC Converters as Active Harmonic Suppression Device for More Electric Aircraft Applications. IEEE Transactions on Industrial Electronics, 69(7), 6508-6518. https://doi.org/10.1109/tie.2021.3099239

Harmonics generated from power electronic converters will impose significant power quality challenges to the electric grid onboard future aircraft. In this article, we propose an innovative modulation scheme that enables using a buck-boost dc-dc conv... Read More about Using DC-DC Converters as Active Harmonic Suppression Device for More Electric Aircraft Applications.

An Enhanced and Cost Saving Droop Control Method for Improved Load Sharing for the MEA Application (2021)
Presentation / Conference Contribution
Hussaini, H., Yang, T., Wang, C., & Bozhko, S. (2021). An Enhanced and Cost Saving Droop Control Method for Improved Load Sharing for the MEA Application. In 2021 IEEE Transportation Electrification Conference & Expo (ITEC) (84-89). https://doi.org/10.1109/itec51675.2021.9490097

The more electric aircraft (MEA) concept has been identified as the major trend of future aircraft. The DC distribution network is a promising architecture for more-electric aircraft application, where multiple electrical sources are connected to a c... Read More about An Enhanced and Cost Saving Droop Control Method for Improved Load Sharing for the MEA Application.

Stability Improvement of Onboard HVdc Grid and Engine Using an Advanced Power Generation Center for the More-Electric Aircraft (2021)
Journal Article
Lang, X., Yang, T., Huang, Z., Wang, C., Wang, Z., Bozhko, S., & Wheeler, P. (2021). Stability Improvement of Onboard HVdc Grid and Engine Using an Advanced Power Generation Center for the More-Electric Aircraft. IEEE Transactions on Transportation Electrification, 8(1), 660-674. https://doi.org/10.1109/tte.2021.3095256

In the high-power settings of engine, such as maximum take-off, more power should be extracted from the high-pressure spool of engine (HPS) than the low-pressure spool of engine (LPS) to avoid the overspeed and potential instability of the HPS. Howev... Read More about Stability Improvement of Onboard HVdc Grid and Engine Using an Advanced Power Generation Center for the More-Electric Aircraft.

Modeling and control of DC grids within more-electric aircraft (2021)
Book Chapter
Wang, C., Hussaini, H., Gao, F., & Yang, T. (2021). Modeling and control of DC grids within more-electric aircraft. In A. Garcés (Ed.), Modeling, Operation, and Analysis of DC Grids: From High Power DC Transmission to DC Microgrids (337-366). Academic Press. https://doi.org/10.1016/b978-0-12-822101-3.00018-6

This chapter mainly discusses the DC microgrids for aerospace application. The more-electric aircraft is the major trend in aerospace industry. Many functions, which were conventionally driven by hydraulic, pneumatic, and mechanical power, are being... Read More about Modeling and control of DC grids within more-electric aircraft.

Fault Tolerant Control of Advanced Power Generation Center for More-Electric Aircraft Applications (2021)
Journal Article
Lang, X., Yang, T., Wang, Z., Wang, C., Bozhko, S., & Wheeler, P. (2022). Fault Tolerant Control of Advanced Power Generation Center for More-Electric Aircraft Applications. IEEE Transactions on Transportation Electrification, 8, 4173-4189. https://doi.org/10.1109/TTE.2021.3093506

This paper presents a control scheme for a recently reported aircraft advanced power generation center (APGC) during postfault operation conditions. Within the APGC, two electrical generators extract power from two separate engine shafts and supply e... Read More about Fault Tolerant Control of Advanced Power Generation Center for More-Electric Aircraft Applications.

Droop Coefficient Design in Droop Control of Power Converters for Improved Load Sharing: An Artificial Neural Network Approach (2021)
Presentation / Conference Contribution
Hussaini, H., Yang, T., Gao, Y., Wang, C., Dragicevic, T., & Bozhko, S. (2021). Droop Coefficient Design in Droop Control of Power Converters for Improved Load Sharing: An Artificial Neural Network Approach. In Proceedings of 30th International Symposium on Industrial Electronics (ISIE 2021). https://doi.org/10.1109/isie45552.2021.9576482

In this paper, a new approach for the design of the droop coefficient in the droop control of power converters using the artificial neural network (ANN) is proposed. In the first instance, a detailed more electric aircraft (MEA) electrical power syst... Read More about Droop Coefficient Design in Droop Control of Power Converters for Improved Load Sharing: An Artificial Neural Network Approach.

Optimised Current Loop Design for a High Speed Nine-Phase Permanent Magnet Synchronous Machine in More Electric Aircraft: A Case Study (2021)
Presentation / Conference Contribution
Tang, M., Lang, X., Gerada, C., Huang, Z., Velmurugan, G., Zanchetta, P., …Yang, T. (2021). Optimised Current Loop Design for a High Speed Nine-Phase Permanent Magnet Synchronous Machine in More Electric Aircraft: A Case Study. In 2021 IEEE Transportation Electrification Conference and Expo (ITEC) (670-676). https://doi.org/10.1109/ITEC51675.2021.9490130

High speed multi-phase machine has drawn widely attention towards the development of electrification due to its high power density and fault tolerant capability. A 50 kW high speed nine-phase permanent magnet synchronous machine has been designed for... Read More about Optimised Current Loop Design for a High Speed Nine-Phase Permanent Magnet Synchronous Machine in More Electric Aircraft: A Case Study.