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- Title
一种气隙磁导谐波引起的永磁体涡流损耗的 解析计算方法.
- Authors
朱龙飞; 祝天利; 于慎波; 韩雪岩; 朱建国
- Abstract
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.
- Subjects
EDDY current losses; EDDY currents (Electric); FINITE element method; ACTINIC flux; AIR gap (Engineering); PERMANENT magnets; MAGNETS; ELECTRIC metal-cutting
- Publication
Electric Machines & Control / Dianji Yu Kongzhi Xuebao, 2020, Vol 24, Issue 5, p10
- ISSN
1007-449X
- Publication type
Article
- DOI
10.15938/j.emc.2020.05.002