Design and Analysis of Modulated Magnetic Pole for Dual Three-Phase Surface-Mounted Permanent Magnet Synchronous Motor

Liyan Guo, Zhongyuan Hao, Jiaqi Xu, Huimin Wang, Xinmin Li and Shuang Wu
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Liyan Guo: School of Electrical Engineering, Tiangong University, Tianjin 300387, China
Zhongyuan Hao: School of Electrical Engineering, Tiangong University, Tianjin 300387, China
Jiaqi Xu: School of Electrical Engineering, Tiangong University, Tianjin 300387, China
Huimin Wang: School of Electrical Engineering, Tiangong University, Tianjin 300387, China
Xinmin Li: School of Electrical Engineering, Tiangong University, Tianjin 300387, China
Shuang Wu: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

Energies, 2022, vol. 15, issue 13, 1-19

Abstract: In order to improve the air-gap magnetic field waveform and reduce the torque ripple of dual three-phase surface-mounted permanent magnet synchronous motors (PMSMs), a new surface-mounted modulated permanent magnet (PM) structure is proposed in this paper. Compared with the existing pole-cutting structure, the modulated magnetic pole does not need to customize the precise machining mold. However, when the modulation pole structure is installed, only the magnetic block-assisted assembly structure is designed to reduce the manufacturing cost. Based on the principle of specific harmonic elimination technology (SHET), the number, size and position angle of the modulated magnetic poles can be calculated, and the elimination or the injection of specific harmonics of the air-gap magnetic field can be realized, which can optimize the performance of the motor. It can be seen that the modulation pole structure based on SHET is also an effective method to improve the sinusoidal waveform of the air-gap magnetic field of the surface-mounted PM motor.

Keywords: dual three-phase; air-gap magnetic field; magnetic pole structure; harmonic analysis; finite element analysis (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: 2022
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