Vol. 93

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2020-10-07

Research on DM Conducted EMI Suppression Method of Switching Power Supply

By Wan Jun Yin, Ke Lin Zhao, Zheng Feng Ming, and Tao Wen
Progress In Electromagnetics Research Letters, Vol. 93, 123-130, 2020
doi:10.2528/PIERL20070202

Abstract

On the basis of serious electromagnetic interference (EMI) produced by power electronic equipment,coupling capacitance existing between transistor and transistor is considered as the main factor disturbing differential-mode(DM) loop. Calculation model of coupling capacitance is established by using FEM (Finite Element Method)and Moment method, and computing method is also derived.EMI improvement method for converter system is proposed by controlling the coupling capacitance impedance. Experimental results show that changing the placement distance and position of the transistor can reduce the conducted interference.

Citation


Wan Jun Yin, Ke Lin Zhao, Zheng Feng Ming, and Tao Wen, "Research on DM Conducted EMI Suppression Method of Switching Power Supply," Progress In Electromagnetics Research Letters, Vol. 93, 123-130, 2020.
doi:10.2528/PIERL20070202
http://www.jpier.org/PIERL/pier.php?paper=20070202

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