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

Volume

1

fYear

1996

fDate

23-27 Jun 1996

Firstpage

100

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE

Conference_Location

Baveno

ISSN

0275-9306

Print_ISBN

0-7803-3500-7

Type

conf

DOI

10.1109/PESC.1996.548566

Filename

548566