A hybrid photovoltaic and battery energy storage system with P-Q and V-f control strategies in microgrid

Microgrid constitutes distributed energy resources (DERs), storage devices and controllable loads. In microgrid applications challenge mainly lies in the integration of Distributed Energy Resources (DERs) through power electronic interfaces. With proper control of inverter switching, seamless transfer from power control mode to voltage and frequency control mode is possible. The paper proposes a novel control strategy for photovoltaic generators with Battery storage system under off grid and grid connected modes of operation. Besides, the control strategies are linked through a power balance objective. The system modeling has been carried out using MATLAB and the performance has been validated.