Title :
Analysis and design of ZVS-PWM half-bridge converter with secondary switches
Author :
Harada, Kazurou ; Ishihara, Yoshiyuki ; Todaka, Toshiyuki
Author_Institution :
Dept. of Electron., Doshisha Univ., Kyoto, Japan
Abstract :
An improved zero voltage switching (ZVS) PWM half-bridge power converter with secondary switches is proposed and analyzed. The proposed power converter is controlled by PWM of the main switches using a novel switching sequence with a constant switching frequency. The main switches operate with zero voltage switching, and the secondary switches turn on and off with zero voltage and zero current. A small saturable inductor is added in series to the secondary switch in order to achieve zero voltage switching easily. From the analysis, steady state characteristics of the power converter and conditions of zero voltage switching are derived
Keywords :
PWM power convertors; bridge circuits; circuit testing; network analysis; network synthesis; power inductors; power semiconductor switches; switching circuits; ZVS PWM half-bridge power converter; circuit analysis; circuit design; constant switching frequency; saturable inductor; secondary switches; steady state characteristics; zero current switching; zero voltage switching; Inductors; Magnetic switching; Pulse width modulation; Pulse width modulation converters; Rectifiers; Stress; Switches; Switching converters; Switching frequency; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474824
