电工技术学报  2019, Vol. 34 Issue (zk1): 7-13    DOI: 10.19595/j.cnki.1000-6753.tces.L80692
电工理论 |
基于磁畴能量最小化原理的电工钢片磁滞模型
张文杰1, 张艳丽1, 姜伟2, 夏斌1, 谢德馨1
1. 沈阳工业大学电气工程学院 沈阳 110870;
2. 沈阳工业大学理学院 沈阳 110870
A Magnetic Hysteresis Model in an Electrical Steel Sheet Based on the Minimization Principle of Magnetic Domain Energy
Zhang Wenjie1, Zhang Yanli1, Jiang Wei2, Xia Bin1, Xie Dexin1
1. School of Electrical Engineering Shenyang University of Technology Shenyang 110870 China;
2. School of Science Shenyang University of Technology Shenyang 110870 China
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摘要 随着大量非线性负荷接入电网,电力变压器铁心更加频繁地工作在谐波、直流偏磁等非标准磁化条件下,传统磁滞模型由于缺少对材料磁化物理机理的深入研究,导致在模拟实际工况下铁心材料磁特性时精度受到限制。本文基于磁光克尔效应磁畴动态观测仪,观察了电工钢片在外磁场磁化过程中磁畴畴壁运动变化,从磁化过程中磁畴运动机理出发,建立了包含有多个磁畴能量的物理模型,并基于总磁能局部最小化原理得到磁畴的磁化状态公式,求得磁畴体积以及磁矩方向的变化。通过测量数据拟合模型参数后,得到电工钢片交变磁化下一系列磁滞回环,并与实验测得结果进行了对比分析,证明该模型能够有效的模拟交变磁化下的磁滞曲线。本文研究结果为进一步实现实际工况下电工设备铁心材料复杂磁特性物理模型的研究打下基础。
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张文杰
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关键词 磁滞模型能量最小化磁畴电工钢片    
Abstract:As a large number of nonlinear loads are connected to the electric grid, the transformer core works in the harmonic, DC bias and other non-standard magnetized conditions more frequently. Due to the lack of in-depth study on the physical mechanism of magnetization of the material, the traditional hysteresis models are reported to have limited modeling accuracy for the magnetic properties of core material running under the actual working conditions. In this paper, based on magneto-optic Kerr effect magnetic domain dynamic viewer, the domain wall movements of the electrical steel sheet during the process of magnetization were observed. A physical model that contains multiple domain energy was established based on the mechanism of magnetic domain movement in the process of magnetization. Further, the formula of domain magnetization state was obtained by means of the local minimization principle of the total magnetic energy, and the change of volume of magnetic domain and the direction of the magnetic moment were computed. By fitting the measuring data into model parameters, a series of hysteresis loops of electrical steel sheet under alternating magnetization were obtained, and by comparing with the experimental results, it is proved that the model can effectively simulate the magnetic hysteresis curves in the alternating magnetization. The research results in this paper lay a foundation for further research in the physical model of ferro-materials in electrical equipment under complex magnetic properties for actual conditions.
Key wordsHysteresis model    energy minimization    magnetic domain    electrical steel sheet   
收稿日期: 2018-07-09      出版日期: 2019-07-29
PACS: TM27  
基金资助:国家电网公司总部科技项目(SGSG0000JSJS1700014)资助
通讯作者: 邹亮,男,1983年生,博士,副教授,研究方向为高电压与绝缘技术、应用电磁学等。E-mail:zouliang@sdu.edu.cn   
作者简介: 张文杰,男,1993年生,硕士,研究方向为电工材料复杂电磁特性的测量、模拟与应用。E-mail:1661212791@qq.com
引用本文:   
张文杰, 张艳丽, 姜伟, 夏斌, 谢德馨. 基于磁畴能量最小化原理的电工钢片磁滞模型[J]. 电工技术学报, 2019, 34(zk1): 7-13. Zhang Wenjie, Zhang Yanli, Jiang Wei, Xia Bin, Xie Dexin. A Magnetic Hysteresis Model in an Electrical Steel Sheet Based on the Minimization Principle of Magnetic Domain Energy. Transactions of China Electrotechnical Society, 2019, 34(zk1): 7-13.
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