Volume: 19 Issue-01 (January-June) 2024

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CENTRAL AND MICRO INVERTERS USING FUZZY LOGIC CONTROL FOR SOLAR PHOTOVOLTAIC INTEGRATED TO GRID

ABSTRACT

This article extensively models both central and micro inverters to facilitate the integration of solar photovoltaic (PV) technology into the AC grid. The validation of these models is conducted using data obtained from a 100 kW solar PV plant. The performance of the models is then compared under several weather conditions, including bright, overcast, and partly shaded days. Models of a 250 W micro inverter and a 5 kW grid tie central inverter were developed using polycrystalline solar PV and MATLAB/Simulink. The SCADA system of the actual solar PV plant supplies information regarding the temperature of the PV modules and the solar irradiation. This data is subsequently inputted into the simulation models. The solar photovoltaic (PV) system equipped with micro inverters has consistently demonstrated greater performance in various operational scenarios when compared to systems using central inverters. The comparative results are shown in relation to the power output of the inverter AC under different operating situations.

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