An examination of radiated electromagnetic emission from hard and soft switched power converters

Author

Venkataramanan, Giri ; Chen, Chingchi

Author_Institution

Dept. of Electr. Eng., Montana State Univ., Bozeman, MT, USA

Volume

2

fYear

1997

fDate

5-9 Oct 1997

Firstpage

1558

Abstract

In recent years, several soft switching power converters have been proposed for a wide range of applications. The voltage and/or current waveforms associated with the switching phenomena in these power converters feature smooth and controlled transitions when compared to conventional hard switched power converters. It has been widely acknowledged that the radiated electromagnetic emission from soft-switched power converters are less than those from conventional hard-switched power converters. This paper is aimed at presenting a comparative study made on hard and soft switched power converters focusing on electromagnetic emission. A zero voltage soft switched power converter and a hard switched power converter which have minimal structural differences are compared in this paper using a simple first order model. This paper presents results from the study performed on hard and soft switched power converters including preliminary experimental results

Keywords

electromagnetic interference; power convertors; switching circuits; EMI; current waveforms; first order model; hard-switching power converters; radiated electromagnetic emission; soft-switching power converters; voltage waveforms; zero voltage switching; Bridge circuits; Buck converters; Capacitors; Electromagnetic radiation; Power semiconductor switches; Switching circuits; Switching converters; Switching loss; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

0-7803-4067-1

Type

conf

DOI

10.1109/IAS.1997.629060

Filename

629060