Novel zero-voltage and zero-current-switching (ZVZCS) full bridge PWM converter with low output current ripple

Author

Baek, J.W. ; Jung, C.Y. ; Cho, J.G. ; Yoo, D.W. ; Rim, G.H.

Author_Institution

Div. Power Electron. Res. Div., Korea Electrotechnol. Res. Inst., Changwon, South Korea

fYear

1997

fDate

19-23 Oct 1997

Firstpage

257

Lastpage

262

Abstract

A novel zero voltage and zero current switching (ZVZCS) full bridge (FB) PWM converter with low output current ripple is presented. A simple auxiliary circuit added in the secondary provides ZVZCS conditions to primary switches, ZVS for leading-leg switches and ZCS for lagging-leg switches, as well as reducing the output current ripple (ideally zero ripple). The auxiliary circuit includes neither lossy components nor additional active switches which are demerits of the previously presented ZVZCS converters. Many advantages including simple circuit topology, high efficiency, low cost and low current ripple make the new converter attractive for high performance high power (>1 kW) applications. The principle of operation, features and design considerations are illustrated and verified on a 2.5 kW, 100 kHz IGBT based experimental circuit

Keywords

PWM power convertors; bridge circuits; insulated gate bipolar transistors; power semiconductor switches; switching circuits; 100 kHz; 2.5 kW; auxiliary circuit; full bridge PWM converter; high efficiency; lagging-leg switches; leading-leg switches; low output current ripple; output current ripple reduction; primary switches; zero-current-switching; zero-voltage-switching; Bridge circuits; Circuit topology; Costs; Insulated gate bipolar transistors; Pulse width modulation converters; Switches; Switching circuits; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1997. INTELEC 97., 19th International

Conference_Location

Melbourne, Vic.

Print_ISBN

0-7803-3996-7

Type

conf

DOI

10.1109/INTLEC.1997.645897

Filename

645897