Title :
Novel zero-voltage and zero-current-switching (ZVZCS) full bridge PWM converter using transformer auxiliary winding
Author :
Cho, Jung G. ; Baek, Ju W. ; Yoo, D.W. ; Lee, ILfong S. ; Rim, Geun H.
Author_Institution :
Power Electron. Res. Div., Korea Electrotechnol. Res. Inst., Changwon, South Korea
Abstract :
A novel zero voltage and zero current switching (ZVZCS) full bridge (FB) 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 (>1 kW) applications. The operation, analysis, 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; transformer windings; 100 kHz; 2.5 kW; IGBT; additional active switches; full bridge PWM converter; high efficiency; lagging-leg switches; leading-leg switches; lossy components; simple circuit topology; transformer auxiliary winding; 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;
Conference_Titel :
Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-3840-5
DOI :
10.1109/PESC.1997.616730
