Real time implementation for harmonics and reactive power compensation

Presence of harmonics in the power grid is a major power quality problem. Various techniques are available to compensate both current and voltage harmonics present in the supply. Conventional schemes are based on filtering technique where fundamental current component is separated from distorted load current. This paper deals with simulation and implementation of Synchronous Reference Frame theory based control scheme for shunt active power filter utilized to compensate for the harmonics drawn by a typical nonlinear load. Simulation is carried out in MATLAB/SIMULINK and hardware implementation is done using dSPACE. Results are presented and discussed to validate the performance of the algorithm in real time.