变频器供电下定子磁动势引起的永磁同步电机转子损耗分析

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摘要随着分数槽集中绕组和高速高密度永磁同步电机的广泛采用,转子损耗受到越来越多的关注。在众多影响因素中,对其影响最大的当属定子磁动势谐波。在深入分析非正弦供电下电枢绕组磁动势的基础上,基于Steinmetz铁耗分离模型并考虑各次谐波路径不同提出一种转子损耗影响因子,该影响因子越大,电机的转子损耗就越大,反之亦然。采用所提出的转子损耗影响因子对8极9槽和8极48槽两种典型结构的转子损耗进行了分析,并通过有限元对两种结构的转子损耗进行了数值计算,说明了所提出的分析方法的有效性。

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	沈启平
	韩雪岩

关键词 ：转子损耗, 谐波损耗, 损耗因子, 透入深度, 磁动势, 永磁同步电机

Abstract：As the wide applications of fractional-slot concentrated winding machine and high speed high power density permanent magnet synchronous machine (PMSM), the rotor loss has obtained more and more attentions. The impact of the stator magnetomotive force (MMF) harmonics is the biggest among many influence factors. After analyzing the stator MMF when it supplied by converter, a novel rotor loss influence factor ξ_k_,_v is proposed based on the Steinmetz separated iron loss model considering different magnetic paths of different harmonics. The bigger ξ_k_,_v, the more rotor loss is, and vice versa. Using the proposed rotor loss influence factor ξ_k_,_v, the rotor losses of two typical pole-slot combination machines with 8-pole 9-slot and 8-pole 48-slot respectively are analyzed. The finite element method (FEM) is then adopted to calculate the rotor losses of the two structures, and verifies the proposed analysis method.

Key words： Rotor loss harmonic loss loss factors skin depth magnetomotive force permanent magnet synchronous machine

出版日期: 2016-03-03

PACS:

TM351

作者简介: 韩雪岩女,1978年生,女,副教授,硕士生导师,研究方向为特种电机、电磁场分析等。E-mail: hxyslm@163.com

引用本文:

沈启平, 韩雪岩. 变频器供电下定子磁动势引起的永磁同步电机转子损耗分析[J]. 电工技术学报, 2016, 31(4): 51-57. Shen Qiping, Han Xueyan. Rotor Loss Analysis of the Permanent Magnet Synchronous Machine Caused by Stator Magnetomotive Force with Converter Powering. Transactions of China Electrotechnical Society, 2016, 31(4): 51-57.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I4/51

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