Insulated Modular Auxiliary Power Source Concept with Multiple Outputs

Gustavo Lambert; Fabiana Seidel; Luan Vinícius Fiorio; Yales R. De Novaes

doi:10.18618/REP.2019.2.0043

Authors

Gustavo Lambert Santa Catarina State University, Joinville–Santa Catarina, Brazil
Fabiana Seidel Santa Catarina State University, Joinville–Santa Catarina, Brazil
Luan Vinícius Fiorio Santa Catarina State University, Joinville–Santa Catarina, Brazil Department of Electrical Engineering Electric Power Processing Group – nPEE
Yales R. De Novaes Santa Catarina State University, Joinville–Santa Catarina, Brazil Department of Electrical Engineering Electric Power Processing Group – nPEE

DOI:

https://doi.org/10.18618/REP.2019.2.0043

Keywords:

Auxiliary power source, Modular Multilevel Converter, Multiple-output

Abstract

This paper presents an insulated auxiliary power source with multiple outputs based on a two-stage structure, where the first-stage operates as a controlled current source and the second-stage as an active rectifier. The second-stage is replicated for each load, where the output voltage is independently controlled by a hysteresis band controller integrated to the auxiliary power source's circuit. Insulation between the multiple stages is achieved by a medium-frequency transformer for each output. The main aim of this auxiliary power supply is to feed modular multilevel converters in laboratory applications that run at the lower range of medium-voltage dc. Theoretical analysis of the auxiliary power supply is presented and verified experimentally for the converter's two main modes of operation.

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Author Biographies

Gustavo Lambert, Santa Catarina State University, Joinville–Santa Catarina, Brazil

(SOBRAEP and IEEE student member) was born in Palmas, Parana in 21/01/1989. He received the ´ B.S. and M.S. degrees in Electrical Engineering from the Santa Catarina State University (UDESC), Joinville, Brazil, in 2012 and 2015, respectively. He is currently pursuing the Dr. degree at Santa Catarina State University. His research interests include the design and control of modular multilevel converter topologies for HVDC and MVDC applications.

Fabiana Seidel, Santa Catarina State University, Joinville–Santa Catarina, Brazil

was born in Rio das Antas, Santa Catarina Brazil in 24/06/1996. She received the bachelor degree in electrical engineering from the Santa Catarina State University (UDESC) in 2018 and currently is pursuing her master degree student at the same institution. She works as a trainee researcher on the Researcher and Technologic Innovation area at WEG Industries. Her areas of interest are power electronics, electronic control systems, and systems monitoring sensors.

Luan Vinícius Fiorio, Santa Catarina State University, Joinville–Santa Catarina, Brazil Department of Electrical Engineering Electric Power Processing Group – nPEE

o born in 09/07/1997 in Concordia, Santa ´ Catarina, Brazil, is a bachelor degree student in the Santa Eletrôn. Potên., Joinville, v. 24, n. 2, p. 139-146, abr./jun. 2019 146 Catarina State University (UDESC). His areas of interest are audio electronics, power electronics, system identification, and artificial intelligence.Between 2017 and 2018 he was a power electronics researcher at UDESC and he’s currently studying the digital emulation of vacuum-tube preamplifiers using artificial intelligence and its use with a class D power amplifier.

Yales R. De Novaes, Santa Catarina State University, Joinville–Santa Catarina, Brazil Department of Electrical Engineering Electric Power Processing Group – nPEE

(SOBRAEP and IEEE member) was born in Indaial, Santa Catarina, Brazil, in 1974. In 1999 he received the B.S. degree in electrical engineering from FURB – Regional University of Blumenau, Santa Catarina, Brazil. The M. Eng. and Dr. degrees were obtained from the Power Electronics Institute (INEP) of the Federal University of Santa Catarina (UFSC) in 2000 and 2006, respectively. During 2001, he worked as a researcher engineer at the same institute. From 2006 to 2008 was a post-doctoral fellow at the Industrial Electronics Laboratory (LEI) at Ecole Polytechnique F ´ ed´ eral ´ de Lausanne (EPFL), Lausanne, Switzerland. From 2008 to 2010 worked as scientist with the Power Electronics Systems group at ABB Corporate Research Center, Daetwill, Switzerland. Currently he is an associate professor at Santa Catarina State University (UDESC), Joinville, Brazil, and coordinator of CMEAR (Research Cell on Microgrids of Alternative and Renewable Energies).

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