A Novel Modular-Stator Outer-Rotor Flux-Switching Permanent-Magnet Motor

Jing Zhao, Yun Zheng, Congcong Zhu, Xiangdong Liu and Bin Li
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Jing Zhao: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Yun Zheng: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Congcong Zhu: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Xiangdong Liu: School of Automation, Beijing Institute of Technology, Beijing 100081, China
Bin Li: School of Automation, Beijing Institute of Technology, Beijing 100081, China

Energies, 2017, vol. 10, issue 7, 1-19

Abstract: A novel modular-stator outer-rotor flux-switching permanent-magnet (MSOR-FSPM) motor is proposed and studied in this paper. Structure, operation and design principles of the MSOR-FSPM motor are introduced and analyzed. Considering that the combination of different pole number and slot number has a great influence on the motor performance, the optimum rotor pole number for the 12-stator-slot MSOR-FSPM motor is researched to obtain good performance and make full use of the space in the MSOR-FSPM motor. The influences of rotor pole number on cogging torque, torque ripple and electromagnetic torque are analyzed and a 12-slot/10-pole MSOR-FSPM motor was chosen for further study. Then, several main parameters of the 12-slot/10-pole MSOR-FSPM motor were optimized to reduce the torque ripple. Finally, the utilization of permanent magnet (PM) in the MSOR-FSPM motor and a conventional outer-rotor flux-switching permanent-magnet (COR-FSPM) motor are compared and analyzed from the point of view of magnetic flux path, and verified by the finite element method (FEM). The FEM results show that the PM volume of MSOR-FSPM motor is only 54.04% of that in a COR-FSPM motor, but its average electromagnetic torque can reach more than 75% of the torque of COR-FSPM motor.

Keywords: outer-rotor; flux-switching permanent-magnet (FSPM) motor; modular-stator; rotor pole number; torque ripple; utilization; permanent magnet volume (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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