Performance of Series-Shunt Power Quality Compensator under unbalanced & distorted loading conditions

Harmonically polluted environment of power system is the most severe problem and integrated day by day, due to vast development and use of the power electronic devices. So it is good practice to use power filter to improve the power quality by reducing the voltage or current harmonics. In this paper, the performance of the Series-Shunt Power Quality Compensator (S-SPQC) is presented under unbalanced and distorted system conditions. In this topology two type of active filters i.e. Series and shunt are integrated to accomplish the goal of improving voltage quality and current quality respectively. In combined approach of S-SPQC, Series part is designed by using Synchronous Reference Frame (SRF) technique while shunt part is designed by using Indirect Current Control (ICC) technique. The MATLAB/ Simulink based simulation results are graphically shown as well as tabulated in detail which reflects the performance of the S-SPQC control method discussed in this paper.