三相逆变器差分模式电磁干扰的频域建模与预测

38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003. Pub Date : 2003-10-12 DOI:10.1109/IAS.2003.1257848

Xudong Huang, E. Pepa, J. Lai, Shaotang Chen, T. Nehl

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引用次数: 43

摘要

本文介绍了一种在三相逆变器设计初期预测差模传导电磁干扰(EMI)的频域方法。该方法能够计算DM传导的电磁干扰，具有更精确的噪声源和寄生路径识别。将DM噪声源识别为三个器件开关电流，并根据逆变器工作原理推导出它们的频域表达式。利用有限元分析方法确定了寄生部件。计算结果与实验数据进行了比较，可以较准确地预测出高频谐振峰值。结果表明，结合准确噪声源和寄生建模的频域分析是预测三相逆变电路DM电磁干扰的有效工具。

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Three-phase inverter differential mode EMI modeling and prediction in frequency domain

This paper describes a frequency domain approach to the prediction of differential mode (DM) conducted electromagnetic interference (EMI) for a three-phase inverter at the early design stage. The approach is able to calculate the DM conducted EMI with more accurate noise source and parasitic path identification. The DM noise sources are identified as three device switching current and their frequency domain expressions are derived according to inverter operating principle. The parasitic components are identified using FEM analysis. The calculated DM EMI result is compared with experimental data and it can predict the high frequency resonant peak precisely. It is indicated that the frequency domain analysis with accurate noise source and parasitic modeling is an effective tool for DM EMI prediction for three-phase inverter circuit.

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38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003.

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