Modeling of Novel Permanent Magnet Pole Shape SPM Motor for Reducing Torque Pulsation

被引：35

作者：

Shah, Syed Qurban Ali ^{[1
]}

Lipo, Thomas A. ^{[2
]}

Kwon, Byung-Il ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Elect Control & Instrumentat Engn, Ansan 426791, Gyeonggi Do, South Korea

[2] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2012年 / 48卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

Cogging torque; linear electromagnetic torque; permanent magnet (PM) pole shape; sinusoidal back EMF; surface-mounted permanent magnet (SPM) motor; MINIMIZATION;

D O I：

10.1109/TMAG.2012.2197188

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：

This paper deals with the modeling of a novel permanent magnet (PM) pole shape for a surface-mounted permanent magnet (SPM) motor so as to generate sinusoidal back EMF and linear electromagnetic torque. Conventional SPM motors have a square-shaped PM pole structure; therefore, square back EMF is generated along with the torque pulsations. This novel SPM motor has sinusoidal PM pole shape in the axial direction; therefore, sinusoidal back EMF is generated due to the sinusoidal magnetic flux distribution. Sinusoidal back EMF eliminates most of the cogging torque; thus, a linear electromagnetic torque is generated. Square and sinusoidal current excitation is provided as to analyze the electromagnetic torque characteristics of SPM motor models. As compared to square current excitation, sinusoidal current excitation shows better linearity as well as average electromagnetic torque for the novel SPM motor model. 3-D finite element analysis (FEA) is utilized to analyze and compare the back EMF, cogging torque, and electromagnetic torque of conventional and proposed novel PM pole shaped SPM motor models for both square and sinusoidal current excitation.

引用

页码：4626 / 4629

页数：4

共 5 条

[1] Optimization of Permanent Magnet Surface Shapes of Electric Motors for Minimization of Cogging Torque Using FEM [J].