Analytical calculation of magnetic field in surface-mounted permanent-magnet vernier motors

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-12-05 DOI:10.3233/jae-230047

Ningning Ren, Le Fan, Keke Yang

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Abstract

This paper proposes an analytical method to calculate the on-load magnetic field, Back electromotive force (BEMF) and torque of the surface-mounted permanent-magnet vernier machine (SMPMVM) accounting for slots, tooth-tips, flux modulation pole slots (FMPS) and the shape of magnet. The on-load magnetic field is predicted according to the surface-current method of permanent magnet, subdomain model and the superposition principle. BEMF and torque are calculated based on the magnetic field. The results show that THD of open-circuit and on-load radial flux density in the SMPMVM with concentric magnet poles is smaller than that in the conventional SMPMVM with eccentric magnet poles. 30th and 50th harmonic orders are obvious between two motors. Moreover, the peak cogging torque of the motor with concentric magnet poles is almost six times of the peak cogging torque of motor with eccentric magnet poles. The finite-element and experimental results confirm that the developed analytical method has high accuracy for predicting the magnetic field, BEMF, cogging torque and on-load electro-magnetic torque of SMPMVM with different shape of magnet.

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表面贴装永磁游标电机磁场解析计算

本文提出了一种考虑槽、齿尖、磁通调制极槽和磁体形状的表面贴装永磁游标机(SMPMVM)有载磁场、反电动势(BEMF)和转矩的解析计算方法。根据永磁体的表面电流法、子畴模型和叠加原理对有载磁场进行了预测。根据磁场计算出电动势和转矩。结果表明，同心磁极SMPMVM的开路和有载径向磁通密度THD均小于偏心磁极SMPMVM;两个电机之间的30次和50次谐波阶明显。同心磁极电机的齿槽转矩峰值几乎是偏心磁极电机齿槽转矩峰值的6倍。有限元和实验结果表明，所建立的分析方法对不同磁体形状的SMPMVM的磁场、BEMF、齿槽转矩和有载电磁转矩具有较高的预测精度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.