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Title: Single-switch flyback power-factor-corrected AC/DC converter with loosely regulated intermediate storage capacitor voltage
Authors: Lu, DDC
Cheng, DKW
Lee, YS
Keywords: AC-DC power convertors
Power factor correction
Switching convertors
Issue Date: 2003
Publisher: IEEE
Source: Proceedings of the 2003 International Symposium on Circuits and Systems, 2003 : ISCAS '03, 25-28 May 2003, v. 3, p. III264-III267 How to cite?
Abstract: Single-stage power-factor-corrected AC/DC converters (SSPFC) usually bear high voltage stress on the intermediate storage capacitor due to the lack of control of this voltage. The storage capacitor voltage varies largely with line voltage and load current and is usually higher than the peak line voltage. This paper presents a new single-switch SSPFC based on flyback topology for which the storage capacitor voltage is loosely regulated by the output voltage, reducing the range of storage capacitor voltage fluctuation against change of input voltage and load current. Moreover, the maximum storage capacitor voltage can be smaller than the peak line voltage at high line condition. Without the addition of power switches to increase the control dimension, the proposed converter utilizes a flyback transformer with multiple-output structure to achieve the control purpose. Experimental results verifying the operation of SSPFC are also reported.
ISBN: 0-7803-7761-3
DOI: 10.1109/ISCAS.2003.1205006
Appears in Collections:Conference Paper

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