Analysis and Application of Two-Layer Unconventional Windings for PM-Assisted Synchronous Reluctance Motors

Guohai Liu, Wenxuan Li, Qian Chen and Yanxin Mao
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Guohai Liu: Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Wenxuan Li: Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Qian Chen: Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Yanxin Mao: Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China

Energies, 2021, vol. 14, issue 12, 1-19

Abstract: This paper presents a new winding configuration theory of conventional and unconventional slot-pole combinations that can be used to configure windings with any slot-pole combination. First, various two-layer windings can be divided into conventional balanced winding (CBW), unbalanced winding (UBW), unconventional even slot winding (UESW) and unconventional odd slot winding (UOSW). In addition, the winding configuration can be divided into two steps—slot sorting and slot distributions to phases—and the rule of winding distribution and connection of the four kinds of windings is given. Moreover, there are four models established corresponding to the four kinds of windings. The air-gap flux density and harmonic of models with double layer flux-barrier PM-assisted rotor and without flux-barrier rotor are analyzed and compared using two-dimensional transient finite element analysis (FEA). The effect of stator magneto motive force (MMF) on torque performance affected by winding configuration is analyzed by comparing air gap magnetic density under two kinds of rotors. The simulation of torque shows that UBW, UESW, and UOSW have a certain reducing effect on torque ripple in PMASynRM. Meanwhile, a brief comparison is made in terms of radial forces and power losses; the effects produced by UBW, UESW, and UOSW compared to CBW in these two aspects are acceptable.

Keywords: PM-assisted synchronous reluctance motor; winding configuration; torque ripple; radial forces; power losses (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: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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