Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement

This paper presents the converter design of a single-phase non-isolated step-down controlled rectifier for power factor improvement and output voltage regulation. The converter consists of a full-bridge diode rectifier and a DC–DC interleaved buck converter of two or more switching cells that has an...

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Main Authors: Jose M. Sosa-Zuniga, Christopher J. Rodriguez-Cortes, Panfilo R. Martinez-Rodriguez, Gerardo Vazquez-Guzman
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Micromachines
Subjects:
Online Access:https://www.mdpi.com/2072-666X/14/3/511
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author Jose M. Sosa-Zuniga
Christopher J. Rodriguez-Cortes
Panfilo R. Martinez-Rodriguez
Gerardo Vazquez-Guzman
author_facet Jose M. Sosa-Zuniga
Christopher J. Rodriguez-Cortes
Panfilo R. Martinez-Rodriguez
Gerardo Vazquez-Guzman
author_sort Jose M. Sosa-Zuniga
collection DOAJ
description This paper presents the converter design of a single-phase non-isolated step-down controlled rectifier for power factor improvement and output voltage regulation. The converter consists of a full-bridge diode rectifier and a DC–DC interleaved buck converter of two or more switching cells that has an LC filter in its input. It is proposed that the interleaved switching cells operate in discontinuous conduction mode and the current through the input LC filter be continuous, avoiding switching frequency components to be injected into the grid. The controller, which has a simple structure and a small number of sensors, allows the system to achieve a high power factor. It also regulates the output voltage to a constant reference. An experimental prototype is built and tested to validate the analysis and proposed design. The closed-loop converter is evaluated both in a steady state and in transient conditions. At steady state, the converter achieves a power factor above 0.9 with a maximum of 45.4% THD at 110.1W. The main contributions of this paper are guidelines for the design of the converter, open-loop analysis, and converter control.
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spelling doaj.art-f800b401fbe440d5be98979a005aa4f92023-11-17T12:41:52ZengMDPI AGMicromachines2072-666X2023-02-0114351110.3390/mi14030511Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor ImprovementJose M. Sosa-Zuniga0Christopher J. Rodriguez-Cortes1Panfilo R. Martinez-Rodriguez2Gerardo Vazquez-Guzman3Tecnologico Nacional de Mexico/ITS de Irapuato, Irapuato 36821, Gto., MexicoTecnologico Nacional de Mexico/ITS de Irapuato, Irapuato 36821, Gto., MexicoFacultad de Ciencias, Universidad Autonoma de San Luis Potosi, San Luis Potosi 78295, SLP, MexicoTecnologico Nacional de Mexico/ITS de Irapuato, Irapuato 36821, Gto., MexicoThis paper presents the converter design of a single-phase non-isolated step-down controlled rectifier for power factor improvement and output voltage regulation. The converter consists of a full-bridge diode rectifier and a DC–DC interleaved buck converter of two or more switching cells that has an LC filter in its input. It is proposed that the interleaved switching cells operate in discontinuous conduction mode and the current through the input LC filter be continuous, avoiding switching frequency components to be injected into the grid. The controller, which has a simple structure and a small number of sensors, allows the system to achieve a high power factor. It also regulates the output voltage to a constant reference. An experimental prototype is built and tested to validate the analysis and proposed design. The closed-loop converter is evaluated both in a steady state and in transient conditions. At steady state, the converter achieves a power factor above 0.9 with a maximum of 45.4% THD at 110.1W. The main contributions of this paper are guidelines for the design of the converter, open-loop analysis, and converter control.https://www.mdpi.com/2072-666X/14/3/511PFCrectifierinterleaved buck converterAC–DCLC filter
spellingShingle Jose M. Sosa-Zuniga
Christopher J. Rodriguez-Cortes
Panfilo R. Martinez-Rodriguez
Gerardo Vazquez-Guzman
Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement
Micromachines
PFC
rectifier
interleaved buck converter
AC–DC
LC filter
title Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement
title_full Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement
title_fullStr Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement
title_full_unstemmed Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement
title_short Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement
title_sort multi phase interleaved ac dc step down converter with power factor improvement
topic PFC
rectifier
interleaved buck converter
AC–DC
LC filter
url https://www.mdpi.com/2072-666X/14/3/511
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AT gerardovazquezguzman multiphaseinterleavedacdcstepdownconverterwithpowerfactorimprovement