Reduction of power converter EMI emission using soft-switching technique

Author

Chung, H. ; Hui, S.Y.R. ; Tse, K.K.

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong

Volume

40

Issue

3

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

282

Lastpage

287

Abstract

Measurements of conducted and radiated electromagnetic interference (EMI) emission from hard-switched and soft-switched buck, boost, and flyback converters of similar power ratings are presented. Results indicate that EMI emission can be substantially reduced by using a soft-switching technique in power converters. Thus, the soft-switching technique provides a practical and useful solution to reduce EMI emission from switched-mode power circuits. A comparison of EMI emission on the three classes of converters is also included. The flyback converter is found to be the least EMC friendly among the converters tested

Keywords

electromagnetic compatibility; electromagnetic interference; interference suppression; power convertors; switched mode power supplies; EMC; EMI emission reduction; EMI measurement; boost converter; buck converter; conducted electromagnetic interference; flyback converter; hard-switched power converter; radiated electromagnetic interference; soft-switched power converter; Acoustic propagation; Admittance; Antennas and propagation; Apertures; Electromagnetic compatibility; Electromagnetic compatibility and interference; Electromagnetic interference; Electromagnetic propagation; Power electronics; Switching circuits;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.709428

Filename

709428