Performance Analysis of Topologies for Autonomous Hybrid Microgrids in Remote Non-Interconnected Communities in the Amazon Region

Julio Martinez-Bolaños, Vinícius Silva, Mariana Zucchi, Raphael Heideier, Stefania Relva, Marco Saidel and Eliane Fadigas
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Julio Martinez-Bolaños: Energy Group of the Department of Energy and Electrical Automation Engineering of the Polytechnic School, University of Sao Paulo, 05508-900 São Paulo, Brazil
Vinícius Silva: Energy Group of the Department of Energy and Electrical Automation Engineering of the Polytechnic School, University of Sao Paulo, 05508-900 São Paulo, Brazil
Mariana Zucchi: Energy Group of the Department of Energy and Electrical Automation Engineering of the Polytechnic School, University of Sao Paulo, 05508-900 São Paulo, Brazil
Raphael Heideier: Energy Group of the Department of Energy and Electrical Automation Engineering of the Polytechnic School, University of Sao Paulo, 05508-900 São Paulo, Brazil
Stefania Relva: Energy Group of the Department of Energy and Electrical Automation Engineering of the Polytechnic School, University of Sao Paulo, 05508-900 São Paulo, Brazil
Marco Saidel: Energy Group of the Department of Energy and Electrical Automation Engineering of the Polytechnic School, University of Sao Paulo, 05508-900 São Paulo, Brazil
Eliane Fadigas: Energy Group of the Department of Energy and Electrical Automation Engineering of the Polytechnic School, University of Sao Paulo, 05508-900 São Paulo, Brazil

Sustainability, 2020, vol. 13, issue 1, 1-15

Abstract: This work presents a detailed comparative analysis of dispersed versus centralized Alternating Current (AC)-coupling topologies and AC-coupling versus Direct Current (DC)-coupling topologies in autonomous Photovoltaic (PV)-diesel-battery microgrids for remote/isolated communities in the Brazilian Amazon region. The comparison concerned the power losses occurring in power conversion devices and in a low-voltage distribution network by using the balance-of-system (BOS) efficiency as a performance index. The analyses were performed by an analytical approach and by detailed computer simulations in MATLAB/Simulink software. Based on the matching factor (MF), the gain obtained in BOS efficiency is 1.5% for low values of the MF, and for high values of the MF, the centralized topology has the same BOS efficiency as the dispersed topology. In conclusion, this factor proved to be useful as a design parameter for selecting the optimal topology of a PV-diesel-battery microgrid.

Keywords: PV-diesel-battery microgrids; AC-coupling and DC-coupling; BOS efficiency; remote and isolated communities; Amazon region (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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