A Three-phase Power-factor Correction Scheme Using an Autotransformer and Two Single-phase Buck Rectifiers

This paper presents a three-phase unidirectional rectifier with power-factor correction (PFC) using two modified single-phase Buck rectifiers in continuous conduction mode (CCM). The phase reduction technique using an autotransformer based on Scott Connection renders a non-isolated rectifier to ope...

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Bibliographic Details
Published in:Eletrônica de Potência
Main Authors: Geovane Duarte Pinheiro, Alceu André Badin, Roger Gules, Eduardo Ribeiro Felix Romaneli
Format: Article
Language:English
Published: Associação Brasileira de Eletrônica de Potência 2015-02-01
Subjects:
buck rectifier
AC-DC converters
PFC converters
Scott Autotransformer
sinusoidal pulse width modulated
Online Access:https://journal.sobraep.org.br/index.php/rep/article/view/465
Description
Summary:This paper presents a three-phase unidirectional rectifier with power-factor correction (PFC) using two modified single-phase Buck rectifiers in continuous conduction mode (CCM). The phase reduction technique using an autotransformer based on Scott Connection renders a non-isolated rectifier to operate with unity power factor. The power of autotransformer is only 14% of the total output power. Two single-phase buck rectifiers interleaved are able to regulate low voltage output. The control system is simple and it has only one voltage control loop. Theoretical analysis, design procedure and complete simulation results with closed loop operation are given. A 4-kW prototype has also been implemented in the laboratory which demonstrated to operate successfully with excellent performance.
ISSN:1414-8862
1984-557X

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