Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE
Print_ISBN :
0-7803-8269-2
DOI :
10.1109/APEC.2004.1295897
