Numerical computation of static magnetic field considering 2D property of silicon steel
Numerical computation of static magnetic field considering 2D property of silicon steel
复制标题
考虑硅钢二维特性的静磁场数值计算
DOI：
10.1109/asemd.2015.7453605
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Yu Wang
中科院分区：
文献类型：
--
作者：
Youxing Xiong;Junquan Chen;Zhenzhong Su;Dong Wang;Z. Yu;Yu Wang
由于取向硅钢的各向异性，各方向的磁导率不能仅由轧制方向和横向的磁导率来确定。提出了一种结合多向磁化曲线描述磁导率各向异性的新方法，与目前商用有限元软件提供的材料模型相比，该方法更接近实际。讨论了静磁场问题中磁化曲线的选择，阐述了二维磁性的测量方法。为了将测量数据应用于静态电磁问题的计算，推导了考虑二维磁性的有限元方程。最后，基于自行开发的有限元软件，对无间隙电感的磁场进行了分析，不同材料模型的磁通分布差异表明，精细材料模型对磁场的精确分析具有重要意义。
Due to anisotropy of grain oriented silicon steel, magnetic permeability along various directions cannot be determined only by that of rolling and transverse direction. A novel method for describing anisotropy of magnetic permeability is proposed in this paper by incorporating multi-direction magnetization curves, which is closer to reality compared to material model provided by present commercial finite element method (FEM) software. Furthermore we have discussed the choice of magnetization curve for static magnetic field problem, elaborated measurement method of 2D magnetic property. In order to apply measurement data in computing static electromagnetic problem, FEM equation considering 2D magnetic property is deduced. At last, based on FEM software developed by ourselves, magnetic field of a non-gap inductor is analyzed, distinction of flux distribution for various material model indicates that fine material model is of great importance to precise analysis of magnetic field.