Viscosity-based magnetodynamic model of soft magnetic materials
Viscosity-based magnetodynamic model of soft magnetic materials
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DOI：
10.1109/tmag.2006.880685
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发表时间：
2006-08
影响因子：
2.1
通讯作者：
S. Zirka;Yu. I. Moroz;P. Marketos;A. Moses
中科院分区：
文献类型：
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作者：
S. Zirka;Yu. I. Moroz;P. Marketos;A. Moses
提出了一种基于磁粘性概念的时间步长方法来再现电工钢中的过剩损耗。提出了一种同时求解麦克斯韦方程和描述磁粘性的方程的数值格式。该方法适用于描述与脉宽调制(PWM)电压激励相关的波形等任意磁化状态，并且模型微分方程可以方便地与外部电路的方程相结合。以三种无取向电工钢为例，验证了所建动力学模型的准确性。对于一个正弦磁通区域的磁粘性参数的拟合使得能够在正弦或非正弦磁通密度的广泛频率和幅度范围内高精度地预测动态磁滞回线和损耗
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