Universal input single-stage PFC AC/DC converter with reduced DC-bus voltage stress

Author

Wu, Wenkai ; Qiu, Weihong ; Rustom, Khalid ; Luo, Shiguo ; Batarseh, Issa

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA

Volume

3

fYear

2002

fDate

2002

Firstpage

1351

Abstract

High DC bus voltage stress and low conversion efficiency limit the practical application for single stage power factor correction (PFC) AC-DC converters. This paper presents a cost-effective approach to alleviate these issues based on a conventional BIFRED AC/DC converter. In the proposed topology, a flyback transformer and a small serial connected inductor are implemented to replace the 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 results of a 20 V@4.5 A prototype indicate that the proposed technique can suppress the DC voltage below 400 V through the entire universal input range, while keeping the efficiency and power factor above 81% and 0.95 respectively.

Keywords

AC-DC power convertors; harmonic distortion; power conversion harmonics; power factor; power transformers; rectifying circuits; switching circuits; 20 V; 4.5 A; 400 V; 81 percent; BIFRED AC/DC converter; DC voltage suppression; cost-efficient lossless snubber; flyback transformer; single-stage power factor correction AC-DC converter; small serial connected inductor; switch turn-off spike reduction; AC-DC power converters; DC-DC power converters; Flyback transformers; Inductors; Low voltage; Power factor correction; Snubbers; Stress; Switches; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual

Print_ISBN

0-7803-7262-X

Type

conf

DOI

10.1109/PSEC.2002.1022364

Filename

1022364