Single-stage high power factor step-up/step-down isolated AC/DC converter

Author

Duarte, Joao ; Lima, Leandro Rodrigues ; Oliveira, Lara ; Michels, Leandro ; Rech, Cassiano ; Mezaroba, Marcello

Author_Institution

nPEE, Electr. Eng. Dept., Santa Catarina State Univ. (UDESC), Joinville, Brazil

Volume

5

Issue

8

fYear

2012

fDate

9/1/2012 12:00:00 AM

Firstpage

1351

Lastpage

1358

Abstract

This study presents a single-stage (S²) isolated current rectifier with power factor correction, based on a full-bridge flyback converter. This converter is designed to operate with adjustable output voltage so that it can operate in two distinct operation modes, step-up or step-down, depending on the input and output voltages. The proposed converter presents some features that make it attractive for many applications, such as constant switching frequency, step-down and step-up operation, high power level capability and the absence of an auxiliary pre-loading circuit to control the inrush current. This study presents the theoretical analysis of the converter for continuous conduction mode as well as experimental results based on a 3 kW prototype.

Keywords

AC-DC power convertors; bridge circuits; electric current control; power factor correction; rectifiers; adjustable output voltage; auxiliary pre-loading circuit; continuous conduction mode; full-bridge flyback converter; high power level capability; inrush current control; power factor correction; single-stage high power factor step-down isolated AC-DC converter; single-stage high power factor step-up isolated AC-DC converter; single-stage isolated current rectifier;

fLanguage

English

Journal_Title

Power Electronics, IET

Publisher

iet

ISSN

1755-4535

Type

jour

DOI

10.1049/iet-pel.2012.0072

Filename

6340669