Title :
New ZVS-PWM converters with zero-current-switched auxiliary switch for low power applications
Author :
Ma, Keun-Soo ; Lee, Jae-Deuk ; Kim, Yang-Ma
Author_Institution :
Electron. Dept., Korea Aerosp. Res. Inst., Taejon, South Korea
Abstract :
A new family of ZVS-PWM converters, which contain auxiliary resonant circuit, is proposed and designed for low power applications in this paper. The auxiliary circuit consists of a resonant inductor, a resonant capacitor, auxiliary diodes, and an auxiliary switch. The auxiliary circuit is only activated during the main switch turn-on. Also, the added auxiliary circuit of the converter provides soft switching of all switches, which main switch and main diode operate under satisfying ZVS, and auxiliary switch operates under satisfying ZCS. A boost typed converter is selected to describe the operation of the family of ZVS-PWM converter. The converter is analyzed for steady state and graphical state plane. The operation characteristics and performances of the converter have been verified by 100 kHz, 90 W breadboarded boost typed converter.
Keywords :
PWM power convertors; capacitors; diodes; inductors; resonant power convertors; switching convertors; 100 kHz; 90 W; ZCS; ZVS-PWM converter; auxiliary diodes; auxiliary resonant circuit; auxiliary switch; breadboarded boost typed converter; graphical state plane; resonant capacitor; resonant inductor; soft switching; steady state plane; Diodes; Inductors; RLC circuits; Resonance; Switched capacitor circuits; Switches; Switching circuits; Switching converters; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355379
