Title :
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
fDate :
3/1/2000 12:00:00 AM
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;
Journal_Title :
Power Electronics, IEEE Transactions on
