Title :
Saturable reactor and lossless capacitor-assisted soft-switching asymmetrical PWM DC-DC converter with forward-flyback transformer link
Author :
Hamada, S. ; Mii, T. ; Hiraki, E. ; Nakaoka, M.
Author_Institution :
Dept. of Electr. & Electron. Eng., Yamaguchi Univ., Japan
Abstract :
An improved half-bridge type ZVS-PWM DC-DC power converter which uses a saturable reactor-assisted soft-switching technique is presented in this paper. The power converter with a high-frequency transformer link has many advantages such as lower switching and conduction losses, load operation in wide range, constant frequency operation and minimized EMI. Its operating principle is illustrated and its steady-state circuit analysis is carried out. In order to demonstrate the remarkable effectiveness of the converter characteristics, feasible experiments are carried out with a 150 W-200 kHz prototype
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; capacitors; high-frequency transformers; saturable core reactors; switching circuits; 150 W; 200 kHz; EMI minimisation; ZVS-PWM DC-DC power converter; asymmetrical PWM DC-DC converter; conduction losses; constant frequency operation; forward-flyback transformer link; half-bridge converter; high-frequency transformer link; load operation; saturable reactor-assisted soft-switching; steady-state circuit analysis; switching losses; Circuit analysis; DC-DC power converters; Diodes; Frequency; Inductors; Power engineering and energy; Pulse width modulation; Pulse width modulation converters; Switches; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548566
