Abstract
Grid integration with Photo Voltaic (PV) and Battery energy conversion system focusing on two aspects namely (i) multi-functional features of a bidirectional AC-DC converter working as interface between the PV & battery pack and AC grid sytem, (ii) MPPT tracking performance of boost DC-DC converter with less current ripple are presented in this paper. The PV side Boost Converter is controlled by Perturbation & Observation (P&O) MPPT algorithm to extract the maximum power from the variable solar irradiation. This paper uses an “Opposed current half bridge” type inverter with hysteresis current controller, adopted to ensure desired power quality, and can also supply sinusoidal current at unity power factor. The considered control scheme provides with the desired power flow between PV Panel, battery energy storage system (BESS) and utility grid based on the given reference settings. This model is tested for a hybrid PV Energy Conversion System simulated in MATLAB/SIMULINK for various load cases.
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