The multiscale finite-element method (MSFEM) reduces the computational costs for the simulation of eddy currents (ECs) in laminated iron cores compared with the standard finite-element method (SFEM) essentially. Nevertheless, the complexity of the resulting problem is still too large to solve it conveniently. The idea is to additionally exploit model order reduction (MOR). Snapshots (SNSs) for a reduced basis are cheaply calculated by the MSFEM. Numerical simulations of a small transformer show exceptional performance. This is well demonstrated by the overall EC losses and by the distribution of the magnetic-flux density, both with respect to those obtained by the MSFEM.

中文翻译：

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MSFEM 和 MOR 可最大限度地降低叠片铁芯中非线性涡流问题的计算成本


与标准有限元法（SFEM）相比，多尺度有限元法（MSFEM）本质上降低了叠片铁芯涡流（EC）模拟的计算成本。尽管如此，由此产生的问题的复杂性仍然太大，无法方便地解决。这个想法是另外利用模型降阶（MOR）。 MSFEM 可以廉价地计算缩减基础的快照 (SNS)。小型变压器的数值模拟显示出卓越的性能。总体 EC 损耗和磁通密度分布充分证明了这一点，两者均与 MSFEM 获得的结果有关。