Microgrid Power Converter Control With Smooth Transient Response During the Change of Connection Mode

Authors

  • Gustavo M. S. Azevedo Federal University of Pernambuco (UFPE) - Recife - PE, Brazil
  • Marcelo C. Cavalcanti Federal University of Pernambuco (UFPE) - Recife - PE, Brazil
  • Francisco A. S. Neves Federal University of Pernambuco (UFPE) - Recife - PE, Brazil
  • Leonardo R. Limongi Federal University of Pernambuco (UFPE) - Recife - PE, Brazil
  • Fabricio Bradaschia Federal University of Pernambuco (UFPE) - Recife - PE, Brazil

DOI:

https://doi.org/10.18618/REP.2014.3.285294

Keywords:

Distributed Generation (DG), Grid synchronization, Microgrids, Parallel inverters

Abstract

Master-slave configuration is a suitable alternative to droop control method to perform the proper power-sharing in microgrids. Microgrids based on master-slave configuration need one master converter (MC) which should be able to work in two operation modes: grid-forming when an outage occurs in the main grid; grid- feeding when the main grid is available. The MC is responsible to control the microgrid voltage and frequency when it is isconnected from the main grid and it also plays an important role during changes of the microgrid connection mode. This paper presents a control scheme that allows the MC operates in both modes (grid- feeding and grid-forming) and proposes a control system management strategy to manage the MC operation under any microgrid connection mode including the transitions between these modes. As a result, the microgrid transient response is smooth during its change of connection mode. Simulations and experimental results are presented to illustrate the feasibility and performance of the proposed control schemes for the MC.

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Author Biographies

Gustavo M. S. Azevedo, Federal University of Pernambuco (UFPE) - Recife - PE, Brazil

was born in Belo Jardim, Brazil, in 1981. He received the B.S., M.S. and Ph.D. degrees in electrical engineering from the Federal University of Pernambuco 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 January 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.

Marcelo C. Cavalcanti, Federal University of Pernambuco (UFPE) - Recife - PE, Brazil

was born in Recife, Brazil, in 1972. He received the B.S. degree in electrical engineering in 1997 from the Federal University of Pernambuco, Recife, Brazil, and the M.S. and Ph.D. degrees in electrical engineering from the Federal University of Campina Grande, Campina Grande, Brazil, in 1999 and 2003, respectively. He worked as a visiting scholar at Center for Power Electronics Systems, Virginia Polytechnic Institute and State University, Blacksburg - USA, from Oct/2001 to Aug/2002, and at Alcala University - Spain, from Set./2012 to Aug./2013. Since 2003, he has been at the Department of Electrical Engineering, Federal University of Pernambuco, where he is currently a Professor of Electrical Engineering. His research interests are renewable systems and power quality.

Francisco A. S. Neves, Federal University of Pernambuco (UFPE) - Recife - PE, Brazil

was born in Campina Grande, Brazil, in 1963. He received the B.S. and M.Sc. degrees in electrical engineering from the Federal University of Pernambuco, Recife, Brazil, in 1984 and 1992, respectively, and the Ph.D. degree in electrical engineering from the Federal University of Minas Gerais, Belo Horizonte, Brazil, in 1999. He worked as a visiting scholar at Georgia Institute of Technology - USA, during 1999, and at Alcala University - Spain, from Feb./2008 to Jan./2009. Since 1993, he has been with the Department of Electrical Engineering, Federal University of Pernambuco, where he is currently a Professor of Electrical Engineering. His research interests are power electronics, renewable energy systems, power quality and grid synchronization methods.

Leonardo R. Limongi, Federal University of Pernambuco (UFPE) - Recife - PE, Brazil

was born in Recife, Brazil, in 1978. He received the M.Sc. degree in electrical engineering from the Universidade Federal de Pernambuco, Recife, Brazil, in 2006, and the Ph.D. degree from the Politecnico di Torino, Turin, Italy, in 2009. Since 2010, he has been at the Electrical Engineering Department, Universidade Federal de Pernambuco, where he is currently a Professor of Electrical Engineering. He is the author of more than 20 papers published in international conference proceedings and technical journals. His research interests include the fields of power electronics dedicated to power conditioning systems and distributed generation.

Fabricio Bradaschia, Federal University of Pernambuco (UFPE) - Recife - PE, 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. From August 2008 to August 2009, he worked as a visiting scholar at the University of Alcala, Madrid, Spain. Since October 2013, he is working as an associate professor in the Department of Electrical Engineering at the Federal University of Pernambuco. His research interests are application of power electronics in renewable energy systems and power quality, including the study of pulse-width modulation, converter topologies and grid synchronization methods.

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Published

2014-08-31

How to Cite

[1]
G. M. S. Azevedo, M. C. Cavalcanti, F. A. S. Neves, L. R. Limongi, and F. Bradaschia, “Microgrid Power Converter Control With Smooth Transient Response During the Change of Connection Mode”, Eletrônica de Potência, vol. 19, no. 3, pp. 285–294, Aug. 2014.

Issue

Vol. 19 No. 3 (2014)

Section

Original Papers

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Copyright (c) 2014 Revista Eletrônica de Potência

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