Control of Distribution Static Compensator Using Three-phase Enhanced Phase-locked Loop

Abstract

This article presents the three-phase enhanced phase-locked loop control of a three-phase distribution static compensator under linear and non-linear loads for improving power quality. The proposed control algorithm adaptively estimates the active and reactive fundamental components of load currents for estimation of reference supply currents, which minimizes the supply current total harmonic distortion within the limits of IEEE Standard 519. The simulation model of the proposed system is developed by using the MATLAB/Sim Power Systems toolbox (The MathWorks, Natick, Massachusetts, USA), and its results are found acceptable to diminish harmonics distortions, reactive power compensation, and load balancing in both power factor correction and zero voltage regulation modes.