Comparative Analysis and Performance of DSTATCOM Device Using PI and Second-Order Sliding Mode Control

Abstract

In distribution systems, more number of power quality problems are there; out of them, harmonics plays major role; these are caused by the nonlinear devices used in the distribution network. In distribution systems, it is around 75% problems which are caused due to especially harmonics. Harmonics exists due to nonlinear devices used in distribution system. These harmonics are compensated by a distribution static compensator (DSTATCOM). By using this injection or absorption of reactive power, voltage and current fluctuations, harmonics elimination can achieve. It is shunt connected device by using this, shunt current compensation can be performed. In this paper detailed explanation about DSTATCOM and the amount of injected current at source side, total harmonic distortion in injected currents are explain with total harmonic distortion values by using prosperous control technique of DSTATCOM is compared with conventional PI controller. Simulation results are obtained by using MATLAB/SIMULINK software.