Research on a 20-Slot/22-Pole Five-Phase Fault-Tolerant PMSM Used for Four-Wheel-Drive Electric Vehicles

Yi Sui, Ping Zheng, Fan Wu, Bin Yu, Pengfei Wang and Jiawei Zhang
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Yi Sui: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Ping Zheng: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Fan Wu: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Bin Yu: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Pengfei Wang: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Jiawei Zhang: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China

Energies, 2014, vol. 7, issue 3, 1-23

Abstract: This paper presents a five-phase fault-tolerant permanent-magnet synchronous machine (PMSM) used for electric vehicles. In multiphase fault-tolerant PMSMs equipped with fractional-slot concentrated windings, excessive magneto-motive force (MMF) harmonics can lead to thermal demagnetization of the permanent magnets (PMs). In order to reduce the lower-order harmonics, the origins of the 2-pole harmonic in conventional winding configurations are investigated, and an unequal-turn winding configuration is applied to cancel the lower-order harmonics. The main electromagnetic performances of the unequal-turn winding configuration are investigated and compared with conventional winding topologies. Based on the principle of maintaining constant instantaneous power, the fault-tolerant control strategies for open-circuits of up to two phases are developed. All of the investigations are verified by finite element analysis (FEA) results.

Keywords: five-phase PMSM; fault-tolerant control; fractional-slot concentrated windings; unequal-turn winding configuration; lower-order harmonic; electric vehicle (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: 2014
References: View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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