A single-stage power-factor-corrected AC/DC converter

Author

Daniele, Matteo ; Jain, Praveen K. ; Joos, Geza

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

14

Issue

6

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

1046

Lastpage

1055

Abstract

This paper presents a single-stage isolated converter topology designed to achieve a regulated DC output voltage having no low-frequency components and a high-input power factor. The topology is derived from the basic two-switch forward converter, but incorporates an additional transformer winding, inductor and a few diodes. The proposed circuit inherently forces the input current to be discontinuous and AC modulated to achieve high-input power factor. The converter output is operated in discontinuous mode to minimize the bulk capacitor voltage variations when the output load is varied. Analysis of the converter is presented, and performance characteristics are given. Design guidelines to select critical components of the circuit are presented. Experimental results on a 150 W 50 kHz universal input (90-265 V) 54.75 V output AC/DC converter are given which confirm the predicted performance of the proposed topology

Keywords

AC-DC power convertors; power capacitors; power factor correction; power transformers; rectifying circuits; transformer windings; 150 W; 50 kHz; 54.75 V; 90 to 265 V; basic two-switch forward converter; bulk capacitor voltage variations; design guidelines; diodes; discontinuous mode operation; inductor; isolated converter topology; output load; performance characteristics; single-stage power factor-corrected AC/DC power converter; transformer winding; Capacitors; Circuit topology; DC-DC power converters; Diodes; Inductors; Power supplies; Reactive power; Stress; Voltage control; Windings;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.803398

Filename

803398