Power Management with Parallel Connected Voltage Source Converters for Solar Photovoltaic Battery Storage Standalone System

This paper deals with a two stage solar photovoltaic (SPV) array with battery storage (BS) based standalone system. A DC-DC boost converter is used to connect the SPV array to the primary voltage source converter (VSC1) DC link and the secondary voltage source converter (VSC2) linked to the bidirectional converter (BDC) with a BS. Here, a maximum power point tracking (MPPT) approach based on perturb & observed (P&O) is used to efficiently operate a SPV array. Load voltage total harmonic distortion (THD) is found within the IEEE-519 std limits. The system’s performance is verified using MATLAB/SIMULINK and is found to be adequate in both static and dynamic circumstances, such as variations in solar insolation and load imbalance.