Novel zero-voltage and zero-current-switching full bridge PWM converter using transformer auxiliary winding

Author

Cho, Jung-Goo ; Baek, Ju-Won ; Jeong, Chang-Yong ; Yoo, Dong-Wook ; Joe, Kee-yeon

Author_Institution

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

Volume

15

Issue

2

fYear

2000

fDate

3/1/2000 12:00:00 AM

Firstpage

250

Lastpage

257

Abstract

A novel zero voltage and zero current switching (ZVZCS) full bridge (FB) pulse width modulation (PWM) converter is proposed to improve the demerits of the previously presented ZVZCS-FB-PWM converters, such as use of lossy components or additional active switches. A simple auxiliary circuit which includes neither lossy components nor active switches provides ZVZCS conditions to primary switches, ZVS for leading-leg switches and ZCS for lagging-leg switches. Many advantages including simple circuit topology, high efficiency, and low cost make the new converter attractive for high power (>2 kW) applications. The operation, analysis, features and design considerations are illustrated and verified on a 2.5 kW, 100 kHz insulated gate bipolar transistor (IGBT) based experimental circuit

Keywords

DC-DC power convertors; PWM power convertors; insulated gate bipolar transistors; power bipolar transistors; power transformers; switching circuits; transformer windings; 100 kHz; 2.5 kW; IGBT; ZVS-ZCS DC/DC full-bridge PWM converter; design considerations; insulated gate bipolar transistor; lagging-leg switches; leading-leg switches; lossy components; transformer auxiliary winding; zero current switching; zero voltage switching; Bridge circuits; Circuit topology; Insulated gate bipolar transistors; Pulse width modulation; Pulse width modulation converters; Switches; Switching circuits; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.838097

Filename

838097