In order to calculate the iron loss in motors with high accuracy, it is necessary to consider skin effect of the eddy current in laminated electrical steel sheets. To solve this problem, the post 1-D analysis is used. It divides every element along the thickness and calculates the distribution of the eddy current and magnetic flux density. In this article, we propose improved post 1-D analysis using the distribution of the differential permeability. In this method, 1-D equation has second differential term using differential permeability coefficient. By using the differential permeability, it is possible to express the sensitivity of the magnetization correctly.

中文翻译：

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改进的后一维分析，利用微分磁导率分布

为了高精度地计算出电动机中的铁损，需要考虑层叠电磁钢板中的涡电流的趋肤效应。为了解决这个问题，使用了后一维分析。它沿厚度划分每个元素，并计算涡流和磁通密度的分布。在本文中，我们建议使用差分渗透率的分布来改进一维后分析。在这种方法中，一维方程式具有使用微分渗透系数的第二微分项。通过使用磁导率差，可以正确表示磁化的灵敏度。