Abstract: The proposed control scheme is used to improve power quality in the grid connected hybrid power generation system by using fuzzy logic controller and is simulated using MATLAB/ SIMULINK in control system block set. The control scheme has a capability to cancel out the harmonic parts of the load current and maintains the source voltage and current in-phase. The simulated Fuzzy logic controller (FLC) based inverter have improved the power quality of source current significantly by reducing the Total Harmonic Distortion (THD).

Keywords: Power Quality; Fuzzy Logic Control system; Total Harmonic Distortion; Hybrid Power generation System;