Optimization and Analysis of a High Power Density and Fault Tolerant Starter–Generator for Aircraft Application

Bo Wang, Gaurang Vakil, Ye Liu, Tao Yang, Zhuoran Zhang and Chris Gerada
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Bo Wang: Power Electronics Machines and Control Group, Department of Electrical and Electronics Engineering, University of Nottingham, Nottingham NG7 2RD, UK
Gaurang Vakil: Power Electronics Machines and Control Group, Department of Electrical and Electronics Engineering, University of Nottingham, Nottingham NG7 2RD, UK
Ye Liu: Center for More-Electric-Aircraft Power System, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Tao Yang: Power Electronics Machines and Control Group, Department of Electrical and Electronics Engineering, University of Nottingham, Nottingham NG7 2RD, UK
Zhuoran Zhang: Center for More-Electric-Aircraft Power System, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Chris Gerada: Power Electronics Machines and Control Group, Department of Electrical and Electronics Engineering, University of Nottingham, Nottingham NG7 2RD, UK

Energies, 2020, vol. 14, issue 1, 1-16

Abstract: Permanent magnet synchronous machines provide many dramatic electromagnetic performances such as high efficiency and high power density, which make them more competitive in aircraft electrification, whereas, designing a permanent magnet starter–generator (PMSG), with given consideration to fault tolerance (FT), is a significant challenge and requires great effort. In this paper, a comprehensive FT PMSG design process is proposed which is applied to power systems of turboprops. Firstly, potential slot/pole combinations were selected based on winding factor, harmonic losses and manufacture issues. Then, pursuing high power density, a multiple objective optimization process was carried out to comprehensively rank performances. To meet a fault tolerance target, electrical, magnetic and thermal isolation topologies were investigated and compared, among which 18 slot/12 pole with dual three-phase was selected as the optimal one, with a power density of 7.9 kW/kg. Finally, a finite element analysis verified the performance in normal and post-fault scenarios. The candidate machine has merits concerning high power density and post-fault performance.

Keywords: dual three-phase; fault-tolerant design; multiple objective optimization; permanent magnet starter–generator (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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