Parasitic Effects of Grounding Paths on Common-Mode EMI Filter´s Performance in Power Electronics Systems

Author

Wang, Shuo ; Maillet, Yoann Yorrick ; Wang, Fei ; Lai, Rixin ; Luo, Fang ; Boroyevich, Dushan

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Texas at San Antonio, San Antonio, TX, USA

Volume

57

Issue

9

fYear

2010

Firstpage

3050

Lastpage

3059

Abstract

High-frequency common-mode (CM) electromagnetic-interference (EMI) noise is difficult to suppress in electronics systems. EMI filters are used to suppress CM noise, but their performance is greatly affected by the parasitic effects of the grounding paths. In this paper, the parasitic effects of the grounding paths on an EMI filter´s performance are investigated in a motor-drive system. The effects of the mutual inductance between two grounding paths are explored. Guidelines for the grounding of CM EMI filters are derived. Simulations and experiments are finally carried out to verify the theoretical analysis.

Keywords

electromagnetic interference; filters; interference suppression; motor drives; power electronics; CM noise suppression; common-mode EMI filter; grounding path parasitic effects; high-frequency common-mode electromagnetic-interference noise; motor drive system; power electronic systems; Electromagnetic-interference (EMI) filter; grounding; inductive coupling; motor drive; mutual inductance; parasitic;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2009.2037643

Filename

5345721