Time-Domain Analysis of Magnetically Shielded Wire Coils Using Homogenized Finite-Element Method
Time-Domain Analysis of Magnetically Shielded Wire Coils Using Homogenized Finite-Element Method
复制标题
使用均质有限元法对磁屏蔽线圈进行时域分析
DOI：
10.1109/tmag.2019.2950497
复制
发表时间：
2020
影响因子：
2.1
通讯作者：
Igarashi Hajime
中科院分区：
文献类型：
--
作者：
Fujita Shogo;Hiruma Shingo;Igarashi Hajime
磁屏蔽线（MSW）对于减少邻近效应引起的涡流损耗是有效的。当使用有限元法 (FEM) 时，分析包括 MSW 在内的电气设备具有挑战性，因为其半径远小于机器的整体尺寸。通过将多匝 MS 线圈 (MSC) 建模为具有频域中定义的宏观复磁导率的均匀材料，可以避免此问题。本文将这种均质化方法扩展到时域。通过将复数渗透率展开为部分分数来有效地执行拉普拉斯逆变换。结果表明，即使在磁芯磁饱和的情况下，所提出的方法也是准确的。
A magnetically shielded wire (MSW) is effective for the reduction of the eddy-current loss due to the proximity effect. When using the finite-element method (FEM), it is challenging to analyze the electric apparatus, including MSWs, because its radius is much smaller than the overall machine size. This problem can be circumvented by modeling a multiturn MS coil (MSC) as uniform material with the macroscopic complex permeability defined in the frequency domain. This article presents an extension of this homogenization method to the time domain. The inverse Laplace transform is effectively performed by expanding the complex permeability into partial fractions. It is shown that the proposed method is accurate even when the magnetic saturation of the magnetic core is in effect.
采用均匀化方法对磁屏蔽线圈进行有限元分析
影响因子：
2.1
作者：
Shogo Fujita;H. Igarashi
通讯作者：
H. Igarashi