Power Quality Improvement of a Grid Connected Wind Energy Conversion System Using Fuzzy Logic Controlled STATCOM

Abstract

Power generation from renewable energy sources (RESs) is needed to fulfill future energy needs. The wind energy source is one of the leading RES that have the potential to contribute a lot to future energy supply. Wind energy is distributed and irregular in nature. The wind energy power generation system should be connected with the utility grid for efficient and economic power exploitation. It creates a power quality issue during the injection of power in the grid due to its fluctuating power generation. The power quality should comply with the norms specified in the IEC-61400 standard. A power quality improvement scheme has been proposed for the grid-connected wind energy power system. In this scheme, A Static Compensator (STATCOM) is developed using a fuzzy logic. Insulated gate bipolar transistors (IGBTs) switches are used in interlinking voltage source inverter (VSI). Three-phase voltages, currents, and DC link voltage are considered for the input variables of the STATCOM. A MATLAB simulation has been performed using SIMPOWER system blocks to validate the effectiveness of the proposed scheme.