Investigation of AC loss of permanent magnet of SPM motor considering hysteresis and eddy-current losses

被引:40
|
作者
Fukuma, A [1 ]
Kanazawa, S [1 ]
Miyagi, D [1 ]
Takahashi, N [1 ]
机构
[1] Okayama Univ, Dept Elect & Elect Engn, Okayama 7008530, Japan
关键词
eddy-current loss; hysteresis loss; NdFeB magnet; SPM motor;
D O I
10.1109/TMAG.2005.846282
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
NdFeB sintered magnets are widely used in rotating electrical machines. In order to develop an efficient rotating machine, it is important to estimate ac loss of the permanent magnet of rotor precisely. In this paper, the ac losses of the permanent magnet of IEEJ model (surface permanent-magnet motor model) are examined by using the three-dimensional finite-element method taking into account the newly measured hysteresis losses of permanent magnet. The result shows that we should consider not only the eddy-current loss but also the hysteresis loss, when the frequency of ac field due to a slot ripple is of the order of several hundred hertz.
引用
收藏
页码:1964 / 1967
页数:4
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