Title :
A single-stage power factor corrected converter with continuous conduction mode operation and regenerative clamping
Author :
Qiao, C. ; Smedley, K.M. ; Maddaleno, F. ; Brooks, T. ; Shimpo, T.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA
Abstract :
A single-stage two-switch forward converter with power factor correction (PFC) and regenerative clamping is proposed. Input current shaping, isolation, fast output regulation and switch turn-off voltage clamping are achieved in a single stage. The input boost inductor can be operated in continuous-conduction-mode, which results in lower conduction losses. The switching loss is reduced thanks to a snubber capacitor. For universal input applications, the voltage across the DC-bus capacitor is kept below 450 V by properly selecting the turns ratio between the additional and primary transformer winding. Therefore, a low cost capacitor can be used. The total harmonies of the converter can meet the EN610003-2 regulation. Experimental results verified the theoretical analysis
Keywords :
inductors; losses; power convertors; power factor correction; snubbers; switching circuits; transformer windings; 450 V; DC-bus capacitor; EN610003-2 regulation; continuous conduction mode operation; fast output regulation; input boost inductor; input current shaping; isolation; low cost capacitor; lower conduction losses; power factor correction; primary transformer winding; regenerative clamping; single-stage power factor corrected converter; snubber capacitor; switch turn-off voltage clamping; switching loss reduction; turns ratio; two-switch forward converter; Capacitors; Clamps; Inductors; Power factor correction; Reactive power; Snubbers; Switches; Switching loss; Voltage; Windings;
Conference_Titel :
Telecommunications Energy Conference, 2000. INTELEC. Twenty-second International
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-6407-4
DOI :
10.1109/INTLEC.2000.884270
