Abstract

Electromagnetic field theory is still one of the most difficult areas in electrical engineering studied by students of specialized universities. Computer simulation learning this section more efficiently. This is especially important with for improving students' individual work in modern educational programs. However, even fairly advanced computer modeling tools have some hidden features. The article is devoted to overcoming the difficulties that arise when using the FEMM program for modeling alternating electromagnetic fields. It is shown that the influence of the electrical skin effect in ac conductors is modeled incorrectly in FEMM. In turn, the influence of the magnetic skin effect in workpieces without extraneous currents placed in the magnetic field of the inductor at a given frequency is simulated correctly. Examples of field models for the variants under consideration are given.

中文翻译：

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FEMM中交变电磁场的电和磁趋肤效应建模的特征

摘要

电磁场理论仍然是由专业大学的学生研究的电气工程中最困难的领域之一。计算机仿真可以更有效地学习本节。这对于改善学生在现代教育计划中的个人工作尤为重要。但是，即使是相当先进的计算机建模工具也具有一些隐藏的功能。本文致力于克服使用FEMM程序对交变电磁场进行建模时出现的困难。结果表明，在FEMM中，集肤效应对交流导体的影响建模不正确。反过来，正确模拟了在给定频率下没有感应电流磁场中放置有多余电流的情况下，趋肤效应在工件中的影响。