分数槽永磁电机永磁体谐波涡流损耗建模与分析

doi:10.19595/j.cnki.1000-6753.tces.210112

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Abstract The key to optimize winding layouts and reduce magnet eddy-current loss of fractional slot permanent-magnet machines is to calculate the loss under armature magnetic field and investigate the variation of harmonic loss with winding layouts. To solve this problem, this paper proposes a current density modeling method of four-layer winding to realize the modeling of three- phase/dual-three-phase, double-layer/four-layer windings. Based on the subdomain model, the slot area of four-layer winding is further divided into the top-layer winding part and the bottom-layer winding part, the boundary condition between the two winding parts is added, and the harmonic coefficients of each subdomain are determined. The analytical model of eddy-current loss is established by solving the transient armature magnetic field. Four 10-pole/12-slot machines with different windings are taken as examples to validate the proposed model by finite element simulation. Based on the proposed model, the variation of harmonic eddy-current loss with the number of winding phases and layers is summarized and analyzed by magnetomotive force, which provides some ideas for optimizing the winding configurations to reduce eddy-current loss.

Key words： Fractional slot permanent-magnet machine armature magnetic field magnet eddy- current loss harmonic eddy-current loss dual three-phase winding four-layer winding

Received: 21 January 2021

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TM341

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	Articles by authors
	Chen Zhenfei
	Xing Ning
	Ma Hongzhong
	Li Zhixin
	Zhang Huangyong

Cite this article:

Chen Zhenfei,Xing Ning,Ma Hongzhong等. Analytical Modeling and Analysis of Magnet Harmonic Loss in Fractional Slot Permanent-Magnet Machines[J]. Transactions of China Electrotechnical Society, 2022, 37(14): 3514-3527.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210112 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I14/3514

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