Material-Efficient Permanent-Magnet Shape for Torque Pulsation Minimization in SPM Motors for Automotive Applications

被引：92

作者：

Zhao, Wenliang ^{[1
]}

Lipo, Thomas A. ^{[2
]}

Kwon, Byung-Il ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Syst Engn, Ansan 426791, South Korea

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

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2014年 / 61卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

Electrical machines; electromagnetic force; finite-element analysis (FEA); finite-element method (FEM); permanent-magnet (PM) machines; sinusoidal electromotive force (EMF); COGGING TORQUE; SYNCHRONOUS MACHINES; POLE SHAPE; RIPPLE; DESIGN; OPTIMIZATION; SUPPRESSION; GEOMETRY;

D O I：

10.1109/TIE.2014.2301758

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper focuses on the design and analysis of a novel material-efficient permanent-magnet (PM) shape for surface-mounted PM (SPM) motors used in automotive actuators. Most of such applications require smooth torque with minimum pulsation for an accurate position control. The proposed PM shape is designed to be sinusoidal and symmetrical in the axial direction for minimizing the amount of rare earth magnets as well as for providing balanced axial electromagnetic force, which turns out to obtain better sinusoidal electromotive force, less cogging torque, and, consequently, smooth electromagnetic torque. The contribution of the novel PM shape to motor characteristics is first estimated by 3-D finite-element method, and all of the simulation results are compared with those of SPM motors with two conventional arched PM shapes: one previously reported sinusoidal PM shape and one step skewed PM shape. Finally, some finite-element analysis results are confirmed by experimental results.

引用

页码：5779 / 5787

页数：9

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