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Lucas Taylan Ponte Medeiros
Universidade Federal do Ceará (UFC), Sobral, Ceará
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Adson Bezerra Moreira
Universidade Federal do Ceará (UFC), Sobral, Ceará
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Leonardo Pires de Sousa Silva
Universidade Federal do Ceará (UFC), Sobral, Ceará
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Arthur C. Souza
Universidade Federal De Itajubá (UNIFEI)
Keywords:
Photovoltaic System, Energy management strategy, Battery
Abstract
This article investigates the quality of electrical energy and a proposal for a solution to problems presented the microgeneration photovoltaic consumer units with caused by the intermittence of the solar source in electrical distribution systems through a combination of a solar energy generation system with an energy storage system (SAE). The solar power generation system is connected to the DC bus by a DC stage (boost converter) incorporated into a maximum power point tracking algorithm (MPPT). The SAE is composed of a battery bank and a bidirectional converter DC-DC (BDC) responsible for charging and discharging the batteries through a control proposal and by connecting the bank to the DC link. The connection with the distribution transformer that interfaces with the three-phase electrical grid is made by the voltage source converter (VSC) that also acts as a parallel active filter (FAP) at the common coupling point (PCC), at this point, non-linear loads present in consumer units of distributed microgeneration are connected. The method used for system synchronization was the Dual Second Order Generalized Integrator (DSOGI-PLL). The proposed system presented a good functioning and a good energy management strategy. The DSOGI-PLL performed well in the face of various disturbances in the electrical grid. The network current Total Harmonic Distortion (THD), with the action of the FAP, was significantly reduced. The P&O tracking algorithm presented high performance against a system without shading and is easy to implement.