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Title: A single-switch power-factor-corrected converter with reduced repeated power processing
Authors: Lu, DDC
Cheng, DKW
Lee, YS
Keywords: AC-DC power convertors
Capacitor storage
Power capacitors
Power factor correction
Power transformers
Rectifying circuits
Switching circuits
Transformer windings
Issue Date: 2001
Publisher: IEEE
Source: 2001 4th IEEE International Conference on Power Electronics and Drive Systems, 2001 : proceedings : 22-25 October 2001, v. 1, p. 26-32 How to cite?
Abstract: By adding an auxiliary winding in series with the input boost inductor of a discontinuous conduction mode (DCM) boost/flyback single-switch power-factor-corrected converter (SSPC), the storage capacitor voltage and its range of voltage fluctuation under line variations can be reduced while maintaining high power factor. Furthermore, the flyback transformer provides a direct energy transfer path to output to increase the conversion efficiency of the converter. It is also found that the power factor, the storage capacitor voltage and the conversion efficiency are controlled by the inductance ratio between the input boost inductor, the auxiliary winding and the output transformer. This paper presents a detailed analysis of the converter operating in DCM. Experimental results for a 15V/60W prototype with wide input voltage range (90-235Vrms) are given to confirm the theoretical analysis of the converter.
ISBN: 0-7803-7233-6
DOI: 10.1109/PEDS.2001.975278
Appears in Collections:Conference Paper

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