Title :
Novel zero-voltage and zero-current-switching (ZVZCS) full bridge PWM converter using a simple auxiliary circuit
Author :
Cho, Jung G. ; Baek, Ju W. ; Jeong, Chang Y. ; Yoo, Dong W. ; Lee, Hong S. ; Rim, Geun H.
Author_Institution :
Power Electron. Res. Div., Korea Electrotechnol. Res. Inst., Changwon, South Korea
Abstract :
A novel zero voltage and zero current switching (ZVZCS) full bridge (FB) PWM power converter is presented to simplify the circuits of the previously presented ZVSCS power converters. A simple auxiliary circuit which consists of one small capacitor and two small diodes is added in the secondary to provide ZVZCS conditions to primary switches as well as to clamp secondary rectifier voltage. The additional clamp circuit for the secondary rectifier is not necessary. The auxiliary circuit includes neither lossy components nor additional active switches which makes the proposed power converter efficient and cost effective. The principle of operation, features and design considerations are illustrated and verified on a 2.5 kW, 100 kHz IGBT-based experimental circuit
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; insulated gate bipolar transistors; power bipolar transistors; power semiconductor switches; switching circuits; 100 kHz; 2.5 kW; auxiliary circuit; capacitor; cost-effectiveness; design considerations; diodes; efficiency; full-bridge DC/DC PWM power converter; operating features; operating principles; power IGBT switches; primary switches; secondary rectifier voltage clamping; zero current switching; zero voltage switching; Bridge circuits; Clamps; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switches; Switching circuits; Switching converters; Zero current switching; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1998. APEC '98. Conference Proceedings 1998., Thirteenth Annual
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-4340-9
DOI :
10.1109/APEC.1998.653995
