Title :
A novel voltage source PWM DC-DC converter using transformer parasitic inductive components-assisted soft-commutation scheme
Author :
Morimoto, T. ; Saito, K. ; Nakamura, M. ; Nakaoka, M.
Author_Institution :
Yamaguchi Univ., Japan
Abstract :
This paper presents new prototype of phase-shift transformer parasitic components-assisted ZVS-PWM DC-DC converter with choke input type DC smoothing filter which incorporates ZCS active power switches in series with each rectifier diode in high-frequency transformer secondary-side. This efficient DC-DC converter with a wide ZVS operation range, which is suitable for high-power applications can achieve soft-switching operation under a condition of no circulating current. Its operating principle and unique features are described. The steady-state operating characteristics of the proposed converter topology are illustrated and discussed on the basis of the simulation and some experimental results of 2 kW-40 kHz breadboard
Keywords :
DC-DC power convertors; PWM power convertors; commutation; high-frequency transformers; switching circuits; 2 kW; 40 kHz; DC-DC converter; ZCS active power switches; choke input type DC smoothing filter; high-frequency transformer secondary-side; operating principle; rectifier diode; soft-switching operation; steady-state operating characteristics; transformer parasitic inductive components-assisted soft-commutation; voltage source PWM DC-DC converter;
Conference_Titel :
Power Electronics and Variable Speed Drives, 2000. Eighth International Conference on (IEE Conf. Publ. No. 475)
Conference_Location :
London
Print_ISBN :
0-85296-729-2
DOI :
10.1049/cp:20000227
