Title :
Transformer parasitic reactive components-assisted soft-switching PWM inverter type DC-DC converter with ZCS power switches
Author :
Morimoto, Takeshi ; Saitou, Kouhei ; Shirakawa, Shinya ; Nakaoka, Mutsuo
Author_Institution :
Dept. of Electr. & Electron. Eng., Yamaguchi Univ., Japan
Abstract :
This paper presents a new prototype of phase-shifted transformer parasitic components-assisted ZVS-PWM DC-DC converter with a choke input type DC smoothing filter which incorporates ZCS active power switches in series with each rectifier diode in the high-frequency transformer secondary-side. This efficient DC-DC converter with a wide ZVS operation ranges 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 DC-DC converter topology are illustrated and discussed on the basis of the simulation and some experimental results of 2 kW-40 kHz breadboard set up
Keywords :
DC-AC power convertors; DC-DC power convertors; PWM invertors; high-frequency transformers; phase shifters; power semiconductor switches; power transformers; switching circuits; transformer windings; 2 kW; 40 kHz; ZCS active power switches; choke input type DC smoothing filter; high-frequency transformer secondary-side; operating principle; phase-shifted transformer parasitic components-assisted ZVS-PWM DC-DC converter; rectifier diode; steady-state operating characteristics; Active filters; DC-DC power converters; Diodes; Inductors; Prototypes; Rectifiers; Smoothing methods; Switching converters; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.878831
