IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A simple single-switch single-stage AC/DC converter with harmonic current correction
Chun-Lin YehTing-Wei HouChien-Ming Chao
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2009 Volume 6 Issue 24 Pages 1757-1763

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Abstract

A simple single-switch single-stage AC/DC converter based on the flyback topology with the high power factor correction, high efficiency and small size is proposed and implemented. It complies with IEC 61000-3-2 for low frequency harmonics under a power range (20-50W) at 110VAC input. The proposed converter introduces the auxiliary winding of the transformer to replace the bulk inductor of the conventional converter topologies. The voltage of the bulk capacitor is (1) clamped under the rectified line voltage and (2) not influenced by the output load. The efficiency reaches 89∼90% and the power factor is between 0.94 and 0.95.

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© 2009 by The Institute of Electronics, Information and Communication Engineers
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