Title

Universal Input Single-Stage Pfc Ac/Dc Converter With Reduced Dc-Bus Voltage Stress

Abstract

High DC bus voltage stress and low conversion efficiency limit the practical application for single stage Power Factor Correction (PFC) AC-DC converter. This paper presents a cost-effective approach to alleviate these issues based on conventional BIFRED AC/DC converter. In the proposed topology, a Flyback transformer and a small serial connected inductor are implemented to replace traditional input PFC inductor, and a cost-efficient lossless snubber is also proposed to reduce the turn-off spike of the main switch. The experimental result of a 20v≰.5A prototype indicates that the proposed technique can suppress the DC voltage below 400V through the entire universal input range while keeping the efficiency and power factor stay above 81% and 0.95 respectively.

Publication Date

1-1-2002

Publication Title

PESC Record - IEEE Annual Power Electronics Specialists Conference

Volume

3

Number of Pages

1351-1356

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

0036443012 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0036443012

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