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Non-Standard Control Strategies for Regulating Power Flow of AC/DC Microgrid Integrated with Storage System

September 12, 2019 @ 5:30 PM - 8:00 PM

Co-sponsored by: Marcelo Simoes

Title: Non-Standard Control Strategies for Regulating Power Flow of AC/DC Microgrid Integrated with Storage System

Speaker: Prof. Ricardo Lucio de Araujo Ribeiro

Abstract –The modern organization of the power system based on ac microgrids allows the insertion of distributed generation (DG) feeding by renewable energy sources (RES). This new configuration demands the development of control strategies for improving the efficiency and reliability of these networks on power flow management. Among them, both the virtual synchronous generator (VSG) and virtual impedance (VI) concepts have gained increased interest in providing a suitable solution to interconnect the DGs to the power systems. The main characteristic of the VSG is the insertion of the virtual inertia implemented via controlled time delay inserted into the active and reactive power control loops. Regarding the VI, it can be employed to reduce the coupling between the active and reactive power flows in low voltage microgrids. DG based on RES is highly variable and stochastic and can cause voltage fluctuations or frequency deviations in ac-bus and voltage oscillations in dc-bus. In these systems, energy storage systems (ESS) are integrated into the DC-bus of DGs to address control flexibility and achieve reliable output power. Non-standard cooperative control strategies with adaptive resources have been demonstrated to be well-suited for regulating the power flow of the dc-bus of an ac/dc microgrids integrated to ESS can ensure the overall stability of the ac/dc microgrids.

Ricardo Lucio de Araujo Ribeiro (M’04) was born in Campina Grande, Brazil, in 1961. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from the Federal University of Campina Grande, Campina Grande, Brazil, in 1990, 1992, and 2003, respectively. From 2001 to 2002, he was with Department of Electrical Engineering, Politecnico di Torino, Turin, Italy, as a Visiting Scholar. Since March 2004, he has been with the Department of Electrical Engineering, the Federal University of Rio Grande do Norte, Natal, Brazil, as an Associate Professor and the Director of the Research Laboratory of Power Electronics and Renewable Energy—LEPER. His research interests include power electronics, renewable energy systems, power quality control, energy efficiency, ac/dc microgrids, storage systems, and power system stability. Dr. Ribeiro is Secretary of Joint Chapter – PES/IAS/PELS – IEEE Bahia Section R9, Tutor of the IEEE – IAS/PELS Student Branch of the Federal University of Rio Grande do Norte, Member of the IEEE Industrial Electronics and Power Electronics Society and SOBRAEP—Brazilian Association of Power Electronics.

Room: MZ-26
Bldg: Marquez Hall
1500 Illinois St
Colorado School of Mines/Department of Electrical Engineering
Golden, Colorado

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