Title :
A Soft-Switching Single-Stage Converter with Buck-Boost PFC Based on an Asymmetrical Half-Bridge Topology
Author :
Hung, J.-C. ; Wu, T.-F. ; Lai, Y.-S. ; Chen, Y.-M.
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Chen Univ., Ming-Hsiung
Abstract :
This paper presents a soft switching single-stage converter with a buck-boost type of power factor corrector (PFC) based on an asymmetrical half-bridge topology. The proposed converter is formed from a buck-boost PFC and an asymmetrical half-bridge converter. The converter has the features of constant frequency operation, soft switching and low voltage stress imposed on the active switches. Moreover, it can achieve high power factor, high efficiency, low switching losses and low component counts, which make converter applications at medium power levels feasible. In the paper, a 150 W converter with the proposed topology has been designed and implemented to verify the discussed features
Keywords :
bridge circuits; network topology; power factor correction; switching convertors; 150 W; asymmetrical half-bridge topology; buck-boost PFC; power factor corrector; soft-switching single-stage converter; switching losses; voltage stress; Capacitors; Circuit topology; Diodes; Inductors; Low voltage; Reactive power; Stress; Switches; Switching converters; Switching loss;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1581900
