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Prediction of the conducted EMI in PWM converter system with parasitic parameters considered

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Abstract

This paper presents a new approach for modeling of the conducted electromagnetic interference (EMI) prediction for widely used converter systems. Coupling paths and mechanism of differential mode (DM) interference and common mode (CM) interference have been analyzed. Models to predict the high-frequency noise of PWM converter system are created. A direct calculation method in frequency domain is proposed for the deduction of frequency spectrum. A method is given for obtaining the parasitic parameters and topological structure of the model. An experimental investigation of the conducted emission from an actual high-power rectifier system is described. The validity of the models is confirmed by comparison to laboratory measurements.

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Authors and Affiliations

  1. Tianjin Key Laboratory of Control Theory & Applications in Complicated Systems, Tianjin University of Technology, Tianjin, 300384, China

    Bin Liang, KeXin Wei & YouJun Yue

  2. School of Electrical Engineering & Automation, Tianjin University, Tianjin, 300072, China

    Bin Liang & KeXin Wei

Authors
  1. Bin Liang
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  2. KeXin Wei
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  3. YouJun Yue
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Correspondence to Bin Liang.

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Liang, B., Wei, K. & Yue, Y. Prediction of the conducted EMI in PWM converter system with parasitic parameters considered. Sci. China Technol. Sci. 55, 2829–2836 (2012). https://doi.org/10.1007/s11431-012-4925-3

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  • DOI: https://doi.org/10.1007/s11431-012-4925-3

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