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基于互感参数提取的多导体与多导线模型缩减方法研究

, PP. 289-296

Keywords: 电磁兼容,矩量匹配方法,邻近效应,互感参数提取,简化等效电路

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Abstract:

金属导体地电流通过地回路公共阻抗在不同电气电子设备之间形成电磁干扰,严重时甚至使敏感设备无法正常工作。然而,地回路公共阻抗在不同回路中表现出不同的阻抗值,因此必须对邻近效应情况下的金属导体进行深入研究。本文利用PEEC方法对邻近效应时的金属导体进行了建模,得到了系统矩阵方程。然后,将简化等效电路和原始电路中导体与导线电流分别进行复频率s幂级数展开匹配,得到了电阻、电感及互感参数,给出了同时考虑趋肤效应与邻近效应时独立于频率之外的简化等效电路模型,并通过算例验证了参数提取方法的正确性。

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