Harmonic Analysis and Fault-Tolerant Capability of a Semi-12-Phase Permanent-Magnet Synchronous Machine Used for EVs

Ping Zheng, Fan Wu, Yi Sui, Pengfei Wang, Yu Lei and Haipeng Wang
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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
Yi Sui: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
Pengfei Wang: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
Yu Lei: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
Haipeng Wang: Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China

Energies, 2012, vol. 5, issue 9, 1-22

Abstract: This paper deals with a fault-tolerant semi-12-phase permanent-magnet synchronous machine (PMSM) used for electric vehicles. High fault-tolerant and low toque ripple features are achieved by employing fractional slot concentrated windings (FSCWs) and open windings. Excessive magnetomotive force (MMF) harmonic components can lead to thermal demagnetization of rotor magnets as well as high core loss. An improved all-teeth-wound winding disposition that changes the winding factor of each harmonic is applied to suppress harmonics. A relatively large slot leakage inductance that limits the short-circuit current (SCC) induced in the short-circuited winding is proposed to deal with short-circuit fault. Fault-tolerant controls up to two phases open circuited are investigated in this paper based on keeping the same torque-producing MMF. The fault-tolerant control strategies corresponding to each faulty mode are studied and compared to ensure high performance operation.

Keywords: fractional slot concentrated winding; fault-tolerant control; harmonic analysis; multiphase PMSM; open winding (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: 2012
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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