Mechanism of Torque Ripple Generation by Time and Space Harmonic Magnetic Fields in Interior Permanent Magnet Synchronous Motors

被引：0

作者：

Yamazaki, K. ^{[1
]}

Utsunomiya, K. ^{[1
]}

机构：

[1] Chiba Inst Technol, Dept Elect Elect & Comp Engn, Narashino, Chiba 2750016, Japan

来源：

2020 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES (ICEM), VOL 1 | 2020年

关键词：

Air gaps; optimization methods; permanent magnet motors; torque; finite element methods; REDUCTION;

D O I：

10.1109/icem49940.2020.9270818

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this article, we investigate mechanism of torque ripple generation by time and space harmonic magnetic fields in interior permanent magnet synchronous motors to obtain advanced motor designs. The general expression between the torque ripples and harmonic air-gap flux densities in the motor are derived by using Maxwell stress tensor. Then, the major harmonic components that produce the torque ripples are specified. According to this observation, the shape of the rotor surface of an interior permanent magnet motor is optimized. It is clarified that specific harmonic components of the torque ripples can be reduced to be nearly zero by optimizing the rotor surface shape.

引用

页码：232 / 238

页数：7

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