Simulation and Experimental Verification of Magnetic Characteristics of Electrical Steel Sheet Under DC Bias Based on Energetic Model

被引：0

作者：

Zhao Z. ^{[1
]}

Ma X. ^{[2
]}

Ji J. ^{[2
]}

机构：

[1] State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Hongqiao District, Tianjin

[2] Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Hongqiao District, Tianjin

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 14期

基金：

中国国家自然科学基金;

关键词：

DC bias; Dynamic Energetic model; Epstein frame; Hysteresis loops; Magnetic loss;

D O I：

10.13334/j.0258-8013.pcsee.190532

中图分类号：

学科分类号：

摘要：

Under the condition of DC bias, the transformer excitation current is distorted, and the loss is significantly increased, which leads to local overheating of the transformer and even insulation aging. In order to study the effect of DC bias on the hysteresis and loss characteristics of ferromagnetic materials, firstly based on the static Energetic model and considering the influence of eddy current loss and abnormal loss on the hysteresis loop, a dynamic Energetic model was established in this paper, and the optimization algorithm and loss separation theory were used to extract static Energetic model parameters and dynamic loss coefficient without bias conditions. The accuracy of the model was verified by comparing the simulation results and measured data of the hysteresis loop. Secondly, a magnetic performance test system was set up to obtain the hysteresis and loss characteristics of electrical steel sheets under different bias conditions, and the influence of DC bias on the hysteresis loss and dynamic loss was analyzed. Finally, based on the above analysis results, a new method for predicting the hysteresis loops and magnetic losses of ferromagnetic materials under different bias conditions was proposed. The prediction results were compared with the experimental results, and they were found to be in good agreement, which verifies the correctness of the proposed method. © 2020 Chin. Soc. for Elec. Eng.

引用

页码：4656 / 4665

页数：9

共 21 条

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