Investigation of a Novel 24-Slot/14-Pole Six-Phase Fault-Tolerant Modular Permanent-Magnet In-Wheel Motor for Electric Vehicles

Ping Zheng, Fan Wu, Yu Lei, Yi Sui and Bin Yu
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Ping Zheng: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
Fan Wu: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
Yu Lei: North China Electric Power Research Institute, Beijing 100045, China
Yi Sui: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
Bin Yu: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China

Energies, 2013, vol. 6, issue 10, 1-23

Abstract: In this paper, a six-phase fault-tolerant modular permanent magnet synchronous machine (PMSM) with a novel 24-slot/14-pole combination is proposed as a high-performance actuator for wheel-driving electric vehicle (EV) applications. Feasible slot/pole combinations of the fractional-slot concentrated winding six-phase PMSM are elicited and analyzed for scheme selection. The novel 24-slot/14-pole combination is derived from the analysis and suppression of the magnetomotive force (MMF) harmonics. By making use of alternate-teeth-wound concentrated winding configuration, two adjacent coils per phase and unequal teeth widths, the phase windings of the proposed machine is magnetically, thermally isolated, which offers potentials of modular design and fault tolerant capability. Taking advantage of the leakage component of winding inductance, 1.0 per unit short-circuit current is achieved endowing the machine with short-circuit proof capability. Optimal design of essential parameters aiming at low eddy current losses, high winding factor and short-circuit-proof ability are presented to pave the way for a high-quality system implementation.

Keywords: fractional-slot concentrated winding; harmonic analysis; multiphase PMSM; modular machine; in-wheel motor (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: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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