Abstract
Recent grid codes require grid connected Photovoltaic (PV) Systems to regulate their power fed to grid. Power curtailment through modification of Maximum Power Point Tracking (MPPT) algorithm and use of energy storage system for storing surplus power are the popular methods that have been employed to meet the requirement. When used individually, the former method does not make optimum utilization of the installed PV system while the later method presents challenge of higher average State of Charge (SoC) during periods with high insolation. This paper proposes strategy to coordinate these two methods such that the challenges associated with each are addressed while achieving the flexible active power control in a grid connected residential PV system. The proposed strategy is implemented in a 6 kW PV-Battery system in MATLAB/SIMULINK. The results depict the effectiveness of proposed control system to coordinate aforementioned solutions for flexible active power control.
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