Grid Connected Photovoltaic System with Fuzzy Logic Control Based MPPT

This paper focused on modelling and simulation of grid connected photovoltaic system. This work presents a fuzzy logic control based maximum power point tracking approach to enhance the efficiency and robustness of the solar photovoltaic (PV) power generation and establishes a dynamic model of grid-connected PV system by Matlab/Simulink environment which reflect the characteristics of the system accurately. Grid-connected PV system includes a PV array, dc-dc converter, fuzzy logic control based MPPT, inverter, LC filter, P-Q based inverter control, a distribution network. Improved fuzzy logic control based MPPT and P and Q based inverter control scheme provides a closed loop active and reactive power control and accurate synchronisation to grid. Simulation results presented here validate the component models and the chosen control schemes.

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