Multiphase PMSM with Asymmetric Windings for Electric Drive

Shumei Cui, Tianxu Zhao, Bochao Du and Yuan Cheng
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Shumei Cui: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Tianxu Zhao: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Bochao Du: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China
Yuan Cheng: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150080, China

Energies, 2020, vol. 13, issue 15, 1-16

Abstract: Multiphase permanent magnet synchronous motors (PMSM) are widely utilized in high power and high reliability electric propulsion systems. In electric propulsion systems, the motor may work at a low efficiency area for a long time, which increases energy consumption and reduces cruise range. In order to improve motor efficiency, this paper proposes a multiphase motor structure. The stator winding of proposed motor consists of three independent windings that have different rated speed and torque. In this paper, winding match mode, operation characteristic and efficiency characteristic are analyzed, and a torque distribution strategy with optimal efficiency is given. The results show that in propeller load such as electric aircrafts and ships, the proposed motor can reduce motor total loss and temperature rise in a drive cycle, which improves system efficiency, reliability and fault tolerance performance.

Keywords: electric drive system; multiphase motor; PMSM; efficiency improvement; asymmetric 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: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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