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

IF 1.1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-12-05 DOI:10.3233/jae-230047

Ningning Ren, Le Fan, Keke Yang

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引用次数: 0

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

International Journal of Applied Electromagnetics and Mechanics 物理-工程：电子与电气

CiteScore

1.70

自引率

0.00%

发文量

100

审稿时长

4.6 months

期刊介绍： The aim of the International Journal of Applied Electromagnetics and Mechanics is to contribute to intersciences coupling applied electromagnetics, mechanics and materials. The journal also intends to stimulate the further development of current technology in industry. The main subjects covered by the journal are: Physics and mechanics of electromagnetic materials and devices Computational electromagnetics in materials and devices Applications of electromagnetic fields and materials The three interrelated key subjects – electromagnetics, mechanics and materials - include the following aspects: electromagnetic NDE, electromagnetic machines and devices, electromagnetic materials and structures, electromagnetic fluids, magnetoelastic effects and magnetosolid mechanics, magnetic levitations, electromagnetic propulsion, bioelectromagnetics, and inverse problems in electromagnetics. The editorial policy is to combine information and experience from both the latest high technology fields and as well as the well-established technologies within applied electromagnetics.