考虑涡流反作用的永磁体涡流损耗解析计算

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Abstract This paper deduces a novel analytical model of permanent magnet (PM) eddy current loss for surface mounted permanent magnet synchronous motor (PMSM) without metal shell, accounting for eddy current reaction, permeance harmonics due to slot and the unevenness of eddy current. This model can calculate eddy current loss with any stator current waveform in surface mounted PMSM without metal shell and can analyze PM eddy current loss caused by any time and spatial harmonics. By using this analytical model, the factors that affect PM eddy current loss are studied, including modulation index, frequency-carrier ratio and air gap length. With increasing the modulation index and frequency-carrier ratio, the sum of squared current time harmonics magnitudes decreases, and accordingly the PM eddy current loss decreases. The increase of air gap length wakens the harmonics armature reaction which decreases the PM eddy current loss. The calculated results and analysis are verified by tests and finite element method (FEM).

Key words： Surface mounted permanent magnet synchronous motor without metal shell permanent magnet eddy current loss analytical derivation eddy current reaction

Received: 08 October 2014 Published: 30 December 2015

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TM351

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	Articles by authors
	Tang Renyuan
	Chen Ping
	Tong Wenming
	Han Xueyan

Cite this article:

Tang Renyuan,Chen Ping,Tong Wenming等. Analytical Calculation of Eddy Current Loss Accounting for Eddy Current Reaction[J]. Transactions of China Electrotechnical Society, 2015, 30(24): 1-10.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I24/1

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