Grid-tie Three-phase Inverter With Active and Reactive Power Flow Control Capability

Leonardo P. Sampaio; Moacyr A. G. de Brito; Guilherme de A. e Melo; Carlos A. Canesin

doi:10.18618/REP.2014.4.397405

Authors

Leonardo P. Sampaio Universidade Tecnológica Federal do Paraná - UTFPR-CP Cornélio Procópio-PR, Brasil.
Moacyr A. G. de Brito Universidade Tecnológica Federal do Paraná - UTFPR-CM Campo Mourão-PR, Brasil
Guilherme de A. e Melo Universidade Estadual Paulista - UNESP-FE/IS Ilha Solteira-SP, Brasil.
Carlos A. Canesin Universidade Estadual Paulista - UNESP-FE/IS Ilha Solteira-SP, Brasil.

DOI:

https://doi.org/10.18618/REP.2014.4.397405

Keywords:

Distributed Generation, Feedback Linearization, Linear Matrix Inequalities, Microgrid, Power Flow Control, Robust Control

Abstract

This paper proposes a methodology for the active and reactive power flow control, applied to a low voltage grid-tie three-phase power inverter. The control technique is designed by means of feedback linearization and the pole placement is obtained using Linear Matrix Inequalities (LMIs) together with D-stability concepts. Through multi-loop control, the power loop uses adapted active and reactive power transfer expressions, in order to obtain the magnitude of the voltage and the power transfer angle to control the power flow between the distributed generation (DG) and the utility grid. The state-feedback linearization technique is applied at the whole control system in order to minimize the nonlinearities of the system, improving the controller's performance and mitigating potential disturbances. The methodology main idea is to obtain the best controllers with the lowest gains as possible placing the poles in the left-half s-plane region specified during the design procedure, resulting in fast responses with reduced oscillations. Demonstrating the feasibility of the proposal a 3kVA three-phase prototype was experimentally implemented. Furthermore, experimental results demonstrate anti-islanding detection and protection against over/under voltage and frequency deviations.

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Author Biographies

Leonardo P. Sampaio, Universidade Tecnológica Federal do Paraná - UTFPR-CP Cornélio Procópio-PR, Brasil.

was born in São José do Rio Preto, SP, Brazil, in 1983. He received the B.Sc., M.Sc. and Ph.D. degrees all in electrical engineering from São Paulo State University (UNESP), Ilha Solteira-SP, Brazil, in 2008, 2010 and 2013, respectively. Since 2012, he has been Professor at Technological University of Paraná (UTFPR) - Cornélio Procópio - Brazil. His interests include computer programming, education in power electronics, education tools, DC-DC converters, inverters, renewable and alternative energy source, photovoltaic systems, power electronic converters.

Moacyr A. G. de Brito, Universidade Tecnológica Federal do Paraná - UTFPR-CM Campo Mourão-PR, Brasil

was born in Andradina, Brazil, in 1982. He received the B.S., M.Sc. and Ph.D degrees all in electrical engineering from São Paulo State University (UNESP), Ilha Solteira-SP, Brazil, in 2005, 2008 and 2013, respectively. Nowadays, he is Adjunct Professor at Technological University of Paraná (UTFPR) - Campo Mourão - Brazil. His interests include ballasts for fluorescent lamps, dimming control, digital control, dcto-dc converters, switching-mode power supplies, power-factorcorrection techniques, field-programmable gate arrays, and standalone and grid-connected inverters for photovoltaic applications.

Guilherme de A. e Melo, Universidade Estadual Paulista - UNESP-FE/IS Ilha Solteira-SP, Brasil.

received the B.S., M.S. and Ph.D. degrees all in electrical engineering from São Paulo State University (UNESP), Ilha Solteira, Brazil, in 2001, 2006, and 2010, respectively. Since 2010, he has been a Collaborator Professor with FEIS, UNESP, where he is currently a Member of the Power Electronics Laboratory (LEP). Dr. Melo principal interest areas are power electronics, electrical power quality and renewable energies.

Carlos A. Canesin, Universidade Estadual Paulista - UNESP-FE/IS Ilha Solteira-SP, Brasil.

received the B.S. degree from São Paulo State University-UNESP, Ilha Solteira (SP), Brazil, in 1984 and the M.S. and Ph.D. degrees from the Federal University of Santa Catarina, Florianópolis (SC), Brazil, in 1990 and 1996, respectively, all in electrical engineering. Currently, Dr. Canesin is a Full Professor at São Paulo State University-UNESP. He started the Power Electronics Laboratory- LEP in 1991, at the UNESP - São Paulo State University, Ilha Solteira (SP), Brazil (http://www.lep.dee.feis.unesp.br/). Dr. Canesin is an Associate Editor for the IEEE Transactions on Power Electronics, IEEE - Institute of Electrical and Electronics Engineers, since 2003, and currently (since 2010) he is a member of The State of São Paulo Council for Energetic Political (CEPE). From Jan/2003 to Dec/2004 he was Editor of the The Brazilian Journal of Power Electronics, edited by SOBRAEP - Brazilian Power Electronics Society, where he is currently a member of Editorial Council. From Nov/2004 to Oct/2006, he was the President of SOBRAEP, the Brazilian Power Electronics Society, where he is currently a permanent member of Deliberative Council. His interests include power quality analysis and techniques, active power-factor correction techniques, highpower factor rectifiers, soft-switching techniques, dc-to-dc converters, dc-to-ac converters, switching-mode power supplies, solar/photovoltaic energy and eolic/wind energy applications, pure electrical vehicles, electronic fluorescent ballasts, and educational research in power electronics.

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