Fuzzy-Logic-Controller-Based SEPIC Converter for MPPT in Standalone PV systems

Challa Venkatesh, P. Raghava Rani

Abstract


This paper presents a fuzzy controller (FC)- based single-ended primary-inductor converter (SEPIC) for maximum power point tracking (MPPT) operation of a photovoltaic (PV) system along with battery. The FLC proposed scheme uses the convergent distribution of the membership function. The fuzzy controller for the SEPIC MPPT scheme shows the voltage without any changes in different load conditions at the inverter output (load) side. The behaviour of the converter is tested in simulation at different operating conditions. The load is fed from the battery storage continuously with constant voltage. The battery will be charge with the help of PV module and the SEPIC converter, which is controlled by FLC-based MPPT. The proposed FLC-based MPPT with battery will supply more power to the load than the without battery system.


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