Soft switching converter with power limiting feature

Author

Pong, M.H. ; Ho, W.C. ; Poon, N.K.

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong

Volume

146

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

95

Lastpage

102

Abstract

A new zero voltage, soft switching converter is presented. This converter implements ZVS to minimise switching losses and it has special output power limiting characteristics. At a constant switching frequency the output power is limited to a maximum value and power falls at high current and low current. This is suitable for applications where power control is needed and the converter has inherent protection against short circuit and overvoltage at open circuit at the output. The authors provide analysis of the ZV soft switching converter; equations for different operating states and the power characteristics are presented. The work is verified by a 70 W prototype converter circuit

Keywords

losses; overvoltage protection; power convertors; short-circuit currents; switching circuits; 70 W; constant switching frequency; operating states; output power limiting characteristics; overvoltage protection; power control; power limiting feature; short circuit protection; soft switching converter; switching losses minimisation; zero voltage soft switching converter;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:19990202

Filename

757955