基于图像理论的永磁体涡流损耗计算方法

doi:1004-7018(2018)11-0015-05

微特电机 ›› 2018, Vol. 46 ›› Issue (11): 15-19.doi: 1004-7018(2018)11-0015-05

基于图像理论的永磁体涡流损耗计算方法

阳喜成,师蔚

上海工程技术大学,上海 201600

收稿日期:2018-05-08 出版日期:2018-11-28 发布日期:2018-11-28
作者简介:阳喜成(1991—),男,硕士研究生,研究方向为永磁电机永磁体涡流损耗。
基金资助:
十三五科技部重点研发计划(2016YFB01700)

Calculation Method of Permanent Magnet Eddy Current Loss Based on Image Theory

YANG Xi-cheng,SHI Wei

Shanghai University of Engineering Science,Shanghai 201600, China

Received:2018-05-08 Online:2018-11-28 Published:2018-11-28

摘要/Abstract

摘要：

针对二维有限元法计算永磁体涡流损耗时无法计及永磁体涡流损耗轴向分布的不均匀,以及三维有限元的计算过程时间过长,研究了一种基于图像理论的三维解析法用于计算永磁电机磁体的涡流损耗。该方法将永磁体三维涡流场的边界条件与图像相结合,并考虑了定子开槽效应,磁体内部的径向和切向场变化以及不同源谐波的相互作用,同时计及了相电流引起的时间谐波。通过与三维电机有限元模型进行结果比较,验证该方法的准确性及可行性。

关键词: 永磁电机, 永磁体, 涡流损耗, 图像理论

Abstract:

Considering that the axial distribution of the permanent magnet eddy current loss can not be taken into account by means of two-dimensional finite element method, and the calculation process is too long by way of three-dimensional finite element method when the eddy current loss of permanent magnets is calculated, a three-dimensional analytical method based on image theory was studied to calculate it in a way of combining the boundary conditions of the three-dimensional eddy current field of permanent magnets with the permanent magnet image model. This method takes into account the slotting effect of the stator, the interaction of different source harmonics caused by the radial and tangential field changes inside the magnet as well as the time harmonics caused by the phase currents. The results calculated by this three-dimensional analytical method and three-dimensional finite element model were compared to verify the feasibility of this method.

Key words: permanent magnet motor, permanent magnet, eddy current loss, image theory

中图分类号:

TM351

阳喜成, 师蔚. 基于图像理论的永磁体涡流损耗计算方法[J]. 微特电机, 2018, 46(11): 15-19.

YANG Xi-cheng, SHI Wei. Calculation Method of Permanent Magnet Eddy Current Loss Based on Image Theory[J]. Small & Special Electrical Machines, 2018, 46(11): 15-19.

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基于图像理论的永磁体涡流损耗计算方法

Calculation Method of Permanent Magnet Eddy Current Loss Based on Image Theory

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