Title :
Universal input single-phase single-stage power supply with power factor correction and automatic voltage clamping
Author :
Qiao, Chongming ; Smedley, Keyue M.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
A single-phase single-stage power supply with power factor correction and automatic voltage clamping is proposed in this paper. This topology combines a boost input current shaper with a new double winding clamped DC/DC power converter. With this configuration, when the main switch is turned off, the voltage of the switch is automatically clamped to the sum of the two bulk capacitor voltages. The energy in the leakage inductance of the primary transformer is recycled. In addition, the voltage stress of the main switch is reduced compared with that of a flyback converter with one primary winding. Experimental results verify the analysis
Keywords :
AC-DC power convertors; DC-DC power convertors; magnetic leakage; power factor correction; power supplies to apparatus; power transformers; rectifying circuits; switching circuits; transformer windings; windings; automatic voltage clamping; boost input current shaper; bulk capacitor voltages; double winding clamped DC/DC power converter; flyback converter; leakage inductance energy recycling; power factor correction; primary transformer; primary winding; switch voltage stress; universal input single-phase single-stage power supply; Capacitors; Clamps; Inductance; Power factor correction; Power supplies; Stress; Switches; Switching converters; Topology; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954234
