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Study and development of distributed photovoltaic systems aimed at cooperative operation in microgrids

Grant number: 12/24309-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): April 01, 2013
Effective date (End): September 30, 2015
Field of knowledge:Engineering - Electrical Engineering - Industrial Electronics, Electronic Systems and Controls
Principal researcher:Jose Antenor Pomilio
Grantee:Danilo Iglesias Brandão
Home Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated scholarship(s):13/21922-3 - Study and development of a cooperative control system applied to distributed DC-AC converters connected to a residential grid, BE.EP.DR


Brazil is taking the first steps toward to spread the medium and low power distributed generation. Consequently, the academic researcher in this area earns an additional relevance, in order to develop and to improve in the devices that will begin to be installed in the country, as well as regarding of theirs control strategies. Conventionally and commercially, photovoltaic systems are limited to only inject active power locally in the grid, however, within its rated capacity, other functions may be added, such as the active compensator or the STATCOM. This project aims to study and to develop photovoltaic systems capable to inject active power in the grid and, simultaneously, to perform a distributed and cooperative compensation with other distributed generators to improve the efficiency and the power quality outside and/or inside of a microgrid under unbalances and distortion waveforms operating conditions. Control of several single phase and/or three-phase photovoltaic systems will be studied, even focusing on the compensation of nonlinearities and unbalanced loads. Also, the possibility to compensate the voltage grid unbalance through distributed generators emulating distributed STATCOMs will be investigated. For this goal, it will be tried to apply the Steinmetz's principles. Moreover, the Conservative Power Theory, which allows the identification of current components, will be applied together with a multi-agent system to assist the exchange of information among photovoltaic units, optimizing the cooperative compensation among them. Beyond the multi-agent system, other techniques for cooperative control, and/or communication among units will be studied and evaluated, for example, token ring control; plug and play control; surround control etc. Simulation and experimental results will be used to evaluate the studies.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BRANDAO, DANILO IGLESIAS; GUILLARDI, JR., HILDO; MORALES-PAREDES, HELMO K.; MARAFAO, FERNANDO PINHABEL; POMILIO, JOSE ANTENOR. Optimized Compensation of Unwanted Current Terms by AC Power Converters Under Generic Voltage Conditions. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, v. 63, n. 12, p. 7743-7753, DEC 2016. Web of Science Citations: 7.
BRANDAO, DANILO IGLESIAS; PAREDES, HELMO KELIS MORALES; COSTABEBER, ALESSANDRO; MARAFAO, FERNANDO PINHABEL. Flexible active compensation based on load conformity factors applied to non-sinusoidal and asymmetrical voltage conditions. IET POWER ELECTRONICS, v. 9, n. 2, SI, p. 356-364, FEB 10 2016. Web of Science Citations: 11.
MARAFAO, FERNANDO PINHABEL; BRANDAO, DANILO IGLESIAS; COSTABEBER, ALESSANDRO; MORALES PAREDES, HELMO KELIS. Multi-task control strategy for grid-tied inverters based on conservative power theory. IET RENEWABLE POWER GENERATION, v. 9, n. 2, p. 154-165, MAR 2015. Web of Science Citations: 17.

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