Analytical approach for calculation of eddy current losses in magnets caused by permeance harmonics in air gap

被引：0
|
作者：
Zhu L.-F. [1 ]
Zhu T.-L. [1 ]
Yu S.-B. [1 ]
Han X.-Y. [1 ]
Zhu J.-G. [2 ]
机构：
[1] National Engineering Research Center for Rare-earth Permanent Magnetic Machines, Shenyang University of Technology, Shenyang
[2] School of Electrical Mechanism and Mechatronic System, University of Technology Sydney, 2007, NSW
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2020年 / 24卷 / 05期
关键词：
Analytical method; Eddy current loss; Permanent magnet electric machine; Permeance harmonics;
D O I：
10.15938/j.emc.2020.05.002
中图分类号：
学科分类号：
摘要：
The three dimensional finite element analysis of eddy current losses in magnets is time consuming, the accurate analytical methods of eddy current losses in magnets are complicated and the relationship between parameters and performances cannot be shown clearly. The coordinate was rebuilt in the slot location, and the local analysis model was investigated. The variation of flux density in magnet at the slot position was analyzed and idealized, a simplified analytical calculation method of eddy current losses in magnets caused by the permeance harmonics in the air gap was proposed, by which the main influence factors are exhibited obviously, and the calculation time is short. The calculated results of eddy current losses in magnets caused by the permeance harmonics were verified by the three dimensional finite element calculation results and the measured results. The influence factors for the variation of magnet flux density are the slot opening width to the equivalent air gap length and to the tooth pitch, and the influences of relative parameters to the eddy current losses in magnets caused by the permeance harmonics were analyzed, and the optimization method was adopted based on the analytical results. It shows that, the eddy current losses in magnets are decreased by about 90.2 percent. © 2020, Harbin University of Science and Technology Publication. All right reserved.
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页码：10 / 16and25
页数：1615
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