Viscosity-based magnetodynamic model of soft magnetic materials

被引：65

作者：

Zirka, Sergey E. ^{[1
]}

Moroz, Yury I.

Marketos, Philip

Moses, Anthony J.

机构：

[1] Dnepropetrovsk Natl Univ, Dept Appl Phys & Technol, UA-49050 Dnepropetrovsk, Ukraine

[2] Cardiff Univ, Sch Engn, Wolfson Ctr Magnet, Cardiff CF24 3AA, S Glam, Wales

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2006年 / 42卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

finite-difference time-domain analysis; magnetic hysteresis; magnetic losses; soft magnetic materials;

D O I：

10.1109/TMAG.2006.880685

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A time-stepping method based on the concept of magnetic viscosity developed to reproduce the excess loss in electrical steel is proposed. A numerical scheme for simultaneous solution of Maxwell equations and equations describing the magnetic viscosity has been developed. The method is suitable for describing arbitrary magnetization regimes such as waveforms associated with pulsewidth modulation (PWM) voltage excitation, and the model differential equations can be conveniently combined with equations of an external electric circuit. The accuracy of the proposed dynamic model is shown using three nonoriented electrical steel as examples. Fitting of the magnetic viscosity parameters for one sinusoidal flux regime enables dynamic hysteresis loops and losses to be predicted with high accuracy over a wide range of frequencies and amplitudes of sinusoidal or nonsinusoidal flux densities.

引用

页码：2121 / 2132

页数：12

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