Model of EMI coupling paths for an off-line power converter

Author

He, Junping ; Jiang, Jianguo ; Huang, Jiangjiang ; Chen, Wei

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

Volume

2

fYear

2004

fDate

2004

Firstpage

708

Abstract

Study on the characteristics of the EMI coupling paths in power electronics equipment is helpful to analyze the EMI mechanism and improve its EMC performance. In this paper, based on the analysis of the EMI sources and coupling paths of an off-line PWM converter, a high frequency model of EMI coupling paths is built and verified by testing and simulating. The qualitative analysis about resonance phenomenon in high frequency band is introduced by simulation. By Monte Carlo simulation method, it is found that the parameter fluctuation mainly influences the amplitude of coupling paths in conducted frequency band. The simplified common mode model of coupling paths is also deduced and its characteristics are mainly influenced by those biggish stray parameters.

Keywords

Monte Carlo methods; PWM power convertors; circuit resonance; electromagnetic compatibility; electromagnetic interference; EMC performance; EMI; Monte Carlo simulation method; PWM converter; coupling paths; off-line power converter; power electronics equipment; Analytical models; Electromagnetic compatibility; Electromagnetic interference; Fluctuations; Frequency conversion; Performance analysis; Power electronics; Pulse width modulation converters; Resonance; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE

Print_ISBN

0-7803-8269-2

Type

conf

DOI

10.1109/APEC.2004.1295897

Filename

1295897