Comparative Analysis Among Integrated And Simplified Zvt Topologies Applied to Three-Phase Inverters

Rafael Concatto Beltrame; Diogo Brum Cândido; Mário Lúcio da Silva Martins; José Renes Pinheiro; Hélio Leães Hey

doi:10.18618/REP.2011.1.037046

Authors

Rafael Concatto Beltrame Power Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, RS, Brazil
Diogo Brum Cândido WEG Automação, Jaraguá do Sul, SC, Brazil
Mário Lúcio da Silva Martins Power Analysis and Processing Research Group, Federal University of Technology – Paraná, Pato Branco, PR, Brazil
José Renes Pinheiro Power Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, RS, Brazil
Hélio Leães Hey Power Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, RS, Brazil

DOI:

https://doi.org/10.18618/REP.2011.1.037046

Keywords:

Harmonic Content, Semiconductor Losses, soft switching, Zero-Voltage-Switching

Abstract

This paper presents a peer comparison between the integration and simplification concepts of zero-voltage-transition (ZVT) circuits applied to voltage fed three-phase inverters used in industrial adjustablespeed drives. Initially, both concepts are defined and their main advantages and limitations are identified. Thereafter, a comparison is made between two selected topologies, considering modulation strategies, main and auxiliary circuit losses and the harmonic content of the inverter output voltage. It is demonstrated that when the load demands a voltage with low harmonic content, the simplified ZVT topologies are recommended and when the number of components is the main concern, the integrated ZVT topologies may be the best choice. Finally, experimental results for the selected topologies operating at 1.5 kW and 20 kHz are presented in order to confirm the comparative analysis carried out. The simplified ZVT topology presented an efficiency of 98.1% at nominal operation while the integrated ZVT topology presented an efficiency of 97.2% at the same condition.

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Author Biographies

Rafael Concatto Beltrame, Power Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, RS, Brazil

was born in Santa Maria, Brazil, in 1984. He received the B.S. and M.S. degrees in electrical engineering from the Federal University of Santa Maria, Brazil, in 2008 and 2009, respectively, where he is currently working toward the Ph.D. degree. Since 2005, he has been with the Power Electronics and Control Research Group (GEPOC), Federal University of Santa Maria. Mr. Beltrame is a member of the Brazilian Power Electronics Society (SOBRAEP) and several IEEE Societies.

Diogo Brum Cândido, WEG Automação, Jaraguá do Sul, SC, Brazil

was born in Porto Alegre, RS, Brazil, in 1985. He received the B.S. and M.S degrees in electrical engineering from the Federal University of Santa Maria, Santa Maria, Brazil, in 2007 and 2010, respectively. From 2004 to 2010, he was with GEPOC, at Federal University of Santa Maria. Currently, he is Product Development Engineer with WEG S.A., Jaraguá do Sul, Brazil.

Mário Lúcio da Silva Martins, Power Analysis and Processing Research Group, Federal University of Technology – Paraná, Pato Branco, PR, Brazil

was born in Palmeira das Missões, RS, Brazil, in 1976. He received the B.S., M.S. and Ph.D. degrees in electrical engineering from the Federal University of Santa Maria, Santa Maria, Brazil in 1999, 2002 and 2008, respectively. In 2006, he joined the Department of Electronics of the Federal University of Technology – Parana, Pato Branco, Brazil, where he is currently a Professor. Dr. Martins is a member of the Brazilian Power Electronics Society (SOBRAEP) and several IEEE Societies.

José Renes Pinheiro, Power Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, RS, Brazil

was born in Santa Maria, Brazil, in 1958. He received the B.S. degree from the Federal University of Santa Maria, Santa Maria, Brazil, in 1981, and the M.S. and Ph.D. degrees from the Federal University of Santa Catarina, Florianopolis, Brazil, in 1984 and 1994, respectively, all in electrical engineering. He has been a Professor at the Federal University of Santa Maria since 1985. In 1987, he founded the Power Electronics and Control Research Group (GEPOC). From 2001 to 2002, he was with the CPES, at Virginia Polytechnic Institute and State University, Blacksburg, as a Postdoctoral Research Scholar. Dr. Pinheiro is a member of the Brazilian Power Electronics Society, Brazilian Automatic Control Society, and several IEEE societies.

Hélio Leães Hey, Power Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, RS, Brazil

was born in Santa Maria, RS, Brazil, in 1961. He received the B.S. degree from the Catholic University of Pelotas, Brazil, in 1985 and the M.S. and Ph.D. degrees from the Federal University of Santa Catarina, Santa Catarina, Brazil, in 1987 and 1991, respectively. He was with the Federal University of Uberlândia, Brazil, from 1989 to 1993. Since 1994, he has been with the Federal University of Santa Maria, Brazil, where he is currently a Full Professor. From 1995 to 1999, he was Editor of the Brazilian Power Electronics Journal. From 2005 to 2006, he was with the Electrical and Electronic Department of the University of Oviedo, Spain, where he performed his Postdoctoral Research Scholar. Dr. Hey is a member of the Brazilian Power Electronics Society, Brazilian Automatic Control Society, and several IEEE societies.

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