Analysis and Implementation of a Single-Phase Bridgeless Hybrid Switched-Capacitor Rectifier in DCM for Power Factor Correction

Chrystian Mumic; Marcus V. Soares; Yales R. de Novaes; Alan J. Watson

doi:10.18618/REP.e202535

Authors

Chrystian Mumic Universidade do Estado de Santa Catarina
Marcus V. Soares Silicon Austria Labs (Austria)
Yales R. de Novaes Universidade do Estado de Santa Catarina
Alan J. Watson University of Nottingham

DOI:

https://doi.org/10.18618/REP.e202535

Keywords:

Bridgeless Rectifier, Discontinuous Conduction Mode, Duty Cycle Control, Hybrid Switched-Capacitor Converters, Power Electronics, Power Factor Correction, Static Gain Multiplication, Voltage Balancing, Voltage Stress Reduction

Abstract

This work presents the quantitative and qualitative analysis, as well as the experimental results of a practical implementation of the Single-Phase Bridgeless Hybrid Switched Capacitor Rectifier operating in discontinuous conduction mode (DCM) to achieve a high input power factor. Operating in DCM provides several advantages, including natural power factor correction (PFC) behavior of the input current and reduced semiconductor switching losses. The paper begins with a literature review on key studies of hybrid switched-capacitor converters with a high power factor. Subsequently, the converter analysis, including its modulation scheme, operational stages and design methodology, is detailed. The proposed approach is validated with results from a practical prototype implementation, achieving an output voltage of 1200 V and an output power of 315 W from an input voltage of 220 V. The converter demonstrated an efficiency of 97.3 %, a power factor of 0.99, and harmonic distortion levels within the limits specified by IEC61000-3-2.

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Author Biographies

Chrystian Mumic, Universidade do Estado de Santa Catarina

was born in Joinville, Santa Catarina, Brazil, in 1997. He received his Bachelor’s degree in Electrical Engineering from the Santa Catarina State University (UDESC) in 2020. He is currently a Master's student at the Power Processing Research Group (nPEE) at UDESC. His research interests include switched-capacitor converters, power factor correction, variable frequency drives, and DC-DC converters.

Marcus V. Soares, Silicon Austria Labs (Austria)

was born in Tubarão, Santa Catarina, Brazil, in 1990. He received the B.S. degree in electrical engineering from Santa Catarina State University (UDESC), Joinville, Brazil, in 2015, and the M.S. and Ph.D. degrees from the Electrical Energy Processing Group (nPEE), UDESC, in 2017 and 2022, respectively. He is currently working as a Scientist for Silicon Austria Labs within the Power Electronics Division.

Yales R. de Novaes, Universidade do Estado de Santa Catarina

was born in Indaial, Santa Catarina, Brazil, in 1974. He received the B.S. degree in electrical engineering from the Regional University of Blumenau (FURB), Blumenau, Brazil, in 1999, and the M.Eng. and Ph.D. degrees from the Power Electronics Institute (INEP), Federal University of Santa Catarina, Florianópolis, Brazil, in 2000 and 2006, respectively. In 2001, he worked as a Research Engineer at the same institute. From 2006 to 2008, he was a Postdoctoral Fellow at the Industrial Electronics Laboratory, École Polytechnique Fédérale de Lausanne, Switzerland. From 2008 to 2010, he was a Scientist with the Power Electronics Systems Group, ABB Corporate Research Center, Daetwill, Switzerland. He was also a visiting Post-Doctoral Researcher Fellow at The University of Nottingham, PEMC, UK, from 2022 to 2023. He is currently a Full Professor at UDESC - Santa Catarina State University, Joinville, Brazil, and a Coordinator of CMEAR (Research Cell on Microgrids of Alternative and Renewable Energies).

Alan J. Watson, University of Nottingham

received the M.Eng. (Hons.) degree in electronic engineering and the Ph.D. degree in power electronics from the University of Nottingham, Nottingham, U.K., in 2004 and 2008, respectively. In 2009, he joined Power Electronics Machines and Control Group, University of Nottingham, as a Research Fellow. Since 2009, he has been involved in various projects in high-power electronics including resonant converters, high-voltage power supplies, and multilevel converters for grid-connected applications, such as HVdc and flexible ac transmission systems. In 2012, he was promoted to a Senior Research Fellow before becoming an Assistant Professor of high power electronics in 2013. Since 2022, he has been an Associate Professor of High-Power Electronics. His current research interests include the development and control of advanced high-power conversion topologies for industrial applications, grid-connected converters, and HVdc transmission.

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