Investigation on the Improved Loss Model of Magnetic Materials under Non-Sinusoidal Excitation Environment
Zhao Zhigang1, 2, Liu Jia1, 2, Guo Ying1, 2, Yin Saining1, 2, Yang Kai1, 2
1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment Tianjin 300130 China; 2. Key Laboratory of Elctromagnetic Field and Electrical Apparatus Reliability of Hebei Province Tianjin 300130 China
Abstract：Based on the most popular loss model proposed by Italian scholar Bertotti,the loss data of oriented electrical steels under different excitation environments, which was measured by Epstein frame, can be fitted by using non-linear least square method.However, there is no explicit consideration in the Bertotti loss model that the non-sinusoidal multivariate conditions, such as harmonic order, content and phase, may influence the iron loss components, wherefore an improved loss model with the introduction of the correction factors to the Bertotti loss model is proposed in this paper. The fitting results were processed to obtain the effects of multivariate conditions on the correction factors and loss components. Then it shows a remarkably good agreement between the calculated results and experimental data points. The conclusions are of significant theoretical value for further exploring the magnetic properties of soft magnetic materials under complex excitation environments.
赵志刚, 刘佳, 郭莹, 尹赛宁, 杨凯. 非正弦励磁环境磁性材料改进损耗模型的研究[J]. 电工技术学报, 2019, 34(13): 2693-2699.
Zhao Zhigang, Liu Jia, Guo Ying, Yin Saining, Yang Kai. Investigation on the Improved Loss Model of Magnetic Materials under Non-Sinusoidal Excitation Environment. Transactions of China Electrotechnical Society, 2019, 34(13): 2693-2699.
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2019, Vol. 34 
