Boost DC-DC Converter with Switched-Capacitor and Four-State Switching Cell

Julio Cesar Dias; Telles Brunelli Lazzarin

doi:10.18618/REP.2022.3.0023

Authors

Julio Cesar Dias Federal University of Santa Catarina, Florianópolis – Santa Catarina, Brasil
Telles Brunelli Lazzarin Federal University of Santa Catarina, Florianópolis – Santa Catarina, Brasil

DOI:

https://doi.org/10.18618/REP.2022.3.0023

Keywords:

High Voltage Gain, Hybrid DC-DC converter, Multistate switching cell, Switched capacitor, Voltage Multiplier

Abstract

The integration of switched-capacitor voltage multiplier cells in basic converter topologies has been studied to provide voltage gain and voltage stress reduction. However, SC cells do not provide current sharing and additionally they induce high current spikes in the devices, which are limitations of these structures to operate in high power levels. The main contribution of this paper is to overcome this drawback proposing the use of a multistate switching-cell for current sharing in SC-based boost converters, which reduces the current stress in the power devices and increases the power levels of this family of converters. The proposed concept can be generalized for m number of SC cells and n number of switching cells to increase the voltage gain and current levels. Furthermore, it can be applied to other basic structures. The theoretical analysis of the proposed structure was evaluated experimentally in a 3 kW boost-type dc-dc converter, achieving 200 V to 1200 V voltage gain, and reaching 98.4% of maximum efficiency.

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Author Biographies

Julio Cesar Dias, Federal University of Santa Catarina, Florianópolis – Santa Catarina, Brasil

was born in Blumenau, Santa Catarina, Brazil, in 1991. He received his B.Sc.degree in Electrical Engineering from the Regional University of Blumenau (FURB), Blumenau, Brazil, in 2015, and the M.Sc. degree from Federal University of Santa Catarina (UFSC), Florianopolis, Brazil, in 2017. He is currently working toward the doctoral degree in the Department of Electrical and Electronic Engineering at the Federal University of Santa Catarina. His research interests include steady-state and dynamic modeling of power converters with a focus on switched-capacitor circuits, renewable energy and storage systems.

Telles Brunelli Lazzarin , Federal University of Santa Catarina, Florianópolis – Santa Catarina, Brasil

was born in Criciuma, Santa Catarina State, Brazil, in 1979. He received the B.Sc., M.Sc. and Ph.D. degrees in Electrical Engineering from the Federal University of Santa Catarina (UFSC), Florianopolis, Brazil, in 2004, 2006 and 2010, respectively. He is currently an Adjunct Professor with the Department of Electronic and Electrical Engineering (EEL) at the UFSC. In 2006, he worked with industry, including R & D activities at the WEG Motor drives & controls, Brazil. He was a Postdoctoral Fellow at the UFSC, Florianopolis, Brazil, in 2011 and a Visiting Researcher at the Northeastern University, Boston, USA, from 20017 to 2018. His interests include switched-capacitor converters, inverters, rectifiers, high-voltage and high-gain dc-dc converters. Dr. Lazzarin is a member of the following societies: SOBRAEP, PELS, IAS and IES.

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