Mild hybridisation of turboprop engine with high-power-density integrated electric drives

Cossart, Gregory; Chen, Yuzheng; Yang, Tao; Khowja, Muhammad; La Rocca, Antonino; Nasir, Usman; Chowdhury, Shajjad; Evans, Dean; Kember, Dafydd; Klonowski, Thomas; Arnaud, Yohan; Apostin, Lucie; Liger, Thierry; Cossart, Grégory; Vakil, Gaurang; Gerada, Chris; Bozhko, Serhiy; Detry, Sebastien; Diette, Christophe; Wheeler, Patrick

Abstract

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 No. 737814). The developed drive system enables green taxiing of a turboprop aircraft while on the ground with its engine off, and as an electrical generator when the turboprop is in the air. The entire system is designed to be able to integrate within the power auxiliary gear box (PAGB) of a turboprop aircraft. Some of the key features of the developed system include a high-speed permanent magnet machine (up to 14,200rpm) with dual three-phase design, SiC-based high power density (11.8kW/L for the power converter, 35.3kW/L and 7.2kW/kg for the machine active parts), integrated cooling design for high-temperature operation (>130ºC ambient temperature), fault tolerance consideration with dual channel operation capabilities and sensorless control for entire operational conditions. This paper is giving an overview of the design process of the electrical machine, power converters, and its cooling of the entire drive. Numerical analysis (FEM and CFD) and some experimental results are presented to demonstrate the effectiveness and the desired performance of the developed integrated drive system.

Citation

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

• Journal Article Type: Article
• Acceptance Date: Mar 7, 2022
• Online Publication Date: Mar 16, 2022
• Publication Date: 2022-12
• Deposit Date: Mar 21, 2022
• Publicly Available Date: Mar 21, 2022
• Journal: IEEE Transactions on Transportation Electrification
• Electronic ISSN: 2332-7782
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Peer Reviewed: Peer Reviewed
• Volume: 8
• Issue: 4
• Pages: 4148-4162
• DOI: https://doi.org/10.1109/TTE.2022.3160153
• Keywords: Electrical and Electronic Engineering; Energy Engineering and Power Technology; Transportation; Automotive Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/7642230
• Publisher URL: https://ieeexplore.ieee.org/document/9736987