Power quality improvement is of paramount importance in both single as well as three-phase systems in the current scenario. Conventional control techniques used in three-phase systems do not apply to single-phase systems. Hence, we implement a Grid Connected Solar Inverter (GCSI) with Adaptive Quadrature Signal Generator (AQSG) based current control for enhancing power quality in single-phase system. It could solve the power quality issues in grid current introduced by both non-linear loads as well as Renewable Energy Sources (RESs) and provide clean energy to the consumers, hence improving the grid reliability. The simulation of GCSI with AQSG control for a single phase grid is implemented using MATLAB/Simulink. Further the Fast Fourier Transform analysis is done in order to validate that the Total Harmonic Distortion (THD) of the GCSI is within the allowed bounds specified by IEEE standard 519-2014. The hardware implementation of the entire system is done in the laboratory projecting that the results obtained through the introduced system stand in accord with that of the simulation.