Core loss modeling for permanent-magnet motor based on flux variation locus and finite-element method

Huang, Yunkai; Dong, J.; Zhu, Jianguo; Guo, Youguang

Core loss modeling for permanent-magnet motor based on flux variation locus and finite-element method

Journal article (2012)

Authors

Yunkai Huang Southeast University

J. Dong Southeast University

Jianguo Zhu University of Technology Sydney

Youguang Guo University of Technology Sydney

Affiliation

External organisation

Finite-element method (FEM) Core loss Flux locus Permanent-magnet (PM) motor

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Published Date

2012-2

Language

English

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Abstract

Core-loss prediction is an important issue in design and analysis of permanent-magnet (PM) motors. Because of the diverse structure, flux distribution, and rotational variation of flux, it is difficult to predict the core loss in a machine exactly. In this paper, a core-loss model for the PM motor is introduced in which flux variation loci in different parts of the motor are predicted by carrying out a finite-element transient analysis. Since the flux variation pattern is complicated, an improved equation based on the conventional three-term expression is used for core-loss calculation. The core-loss model is developed totally in ANSYS parametric design language as a parametric model and it can be used easily for different types of PM motors. Calculation and experiments on a high-speed PM motor have shown that the model can produce results that agree with the experimental ones.