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Cogging torque calculation considering magnetic anisotropy for permanent magnet synchronous motors

Shinichi Yamaguchi (Advanced Technology R&D Center, Mitsubishi Electric Corporation, Amagasaki, Hyogo, Japan)
Akihiro Daikoku (Advanced Technology R&D Center, Mitsubishi Electric Corporation, Amagasaki, Hyogo, Japan)
Norio Takahashi (Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University, Tsushima, Okayama, Japan)

Abstract

This paper describes the cogging torque of the permanent magnet synchronous (PM) motors due to the magnetic anisotropy of motor core. The cogging torque due to the magnetic anisotropy is calculated by the finite element method using two kinds of modeling methods: one is the 2D magnetization property method, and the other is the conventional method. As a result, the PM motors with parallel laminated core show different cogging torque waveform from the PM motors with the rotational laminated core due to the influence of the magnetic anisotropy. The amplitudes of the cogging torque are different depending on the modeling methods in the region of high flux density.

Keywords

Citation

Yamaguchi, S., Daikoku, A. and Takahashi, N. (2004), "Cogging torque calculation considering magnetic anisotropy for permanent magnet synchronous motors", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 23 No. 3, pp. 639-646. https://doi.org/10.1108/03321640410540548

Publisher

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Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited