Hybrid Power Filter Based on a Six-Switch Two-Leg Inverter

Leonardo R. Limongi; Luiz G. B. Genú; Luís R. Silva Filho; Fabrício Bradaschia; Gustavo M. S. Azevedo

doi:10.18618/REP.2014.2.132141

Authors

Leonardo R. Limongi Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil
Luiz G. B. Genú Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil
Luís R. Silva Filho Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil
Fabrício Bradaschia Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil
Gustavo M. S. Azevedo Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil

DOI:

https://doi.org/10.18618/REP.2014.2.132141

Keywords:

Active Power Filters, Diode Rectifiers, Harmonics, Hybrid Power Filters

Abstract

Hybrid power filters (HPFs) are considered an attractive solution to overcome the problem of current harmonics generated by nonlinear loads. They mix low power rating active filters with passive filters, but many of these HPF topologies have a great number of passive components and/or transformers. Based on this fact, new concepts of HPFs, consisting of small rated inverters and LC filters, have been introduced with wide acceptance. The advantage comes from the fact that these HPFs are connected to the grid without any matching transformer. This paper proposes a transformerless HPF based on a new six-switch two-leg inverter with an enhanced harmonic compensation capability. Besides presenting a reduced number of switches when compared with dual topologies, the proposed solution is capable of providing good compensation even for loads with a high harmonic content. Experimental results are presented for a HPF inverter prototype in order to demonstrate the effectiveness of the proposed topology.

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Author Biographies

Leonardo R. Limongi, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil

was born in Recife, Brazil, in 1978. He received the B.Sc. and M.Sc. degrees in electrical engineering from the Federal University of Pernambuco, Recife, Brazil, in 2004 and 2006, respectively. He received the Ph.D degree from Politecnico di Torino, Torino, Italy, in 2009. Since 2010, he is working as a professor in the Department of Electrical Engineering at the Federal University of Pernambuco. His research interests are renewable energy systems and power quality.

Luiz G. B. Genú, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil

was born in Pesqueira, Brazil, in 1988. He received the B.Sc. degree in electrical engineering from the Federal University of Pernambuco, Recife, Brazil, in 2012, where he is currently working toward the M.Sc. degree. His research interests are power quality and power electronics.

Luís R. Silva Filho, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil

was born in Tatuí, Brazil, in 1981. He received the B.Sc. degree in electrical engineering from the Federal University of Pernambuco, Recife, Brazil, in 2012, where he is currently working toward the M.Sc. degree. His research interests are power quality and power electronics.

Fabrício Bradaschia, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil

was born in São Paulo, Brazil, in 1983. He received the B.Sc., M.Sc. and Ph.D. degrees in electrical engineering from the Federal University of Pernambuco, Recife, Brazil, in 2006, 2008 and 2012, respectively. He worked as a visiting scholar at the University of Alcala, Madrid, Spain, from 2008 to 2009. Since 2013, he is working as an associate professor in the Department of Electrical Engineering at the Federal University of Pernambuco. His research interests are renewable energy systems and power quality.

Gustavo M. S. Azevedo, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil

was born in Belo Jardim, Brazil, in 1981. He received the B.Sc., M.Sc. and Ph.D. degrees in electrical engineering from the Federal University of Pernambuco, Recife, Brazil, in 2005, 2007 and 2011, respectively. He worked as a visiting scholar at the Polytechnical University of Catalunya, Barcelona, Spain, from 2008 to 2009. Since 2014, he is working as an associate professor in the Department of Electrical Engineering at the Federal University of Pernambuco. His research interests are renewable energy systems and microgrids.

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