Reduction of Power losses by Repetitive Controller and Phase Modulation based DVR

Abstract

The utility voltages are experiencing significant power quality problems like grid voltage dip, unbalanced 3- phase voltage, and voltage fluctuations owing to diverse load conditions and increasing disturbances at the distribution side of the power system. Among all other Custom power devices to solve grid control issues, the dynamic voltage restorer (DVR) consisting of a power electronics converter can nurture the load amid grid voltage variations; hence protect the sensitive electronic equipment, whereas current quality can be improved using Hybrid Active Power Filter. The purpose of this article is to address the issues related to grid voltage sag and swell compensation and the diminishment of total harmonic distortion. In this paper power, quality improvement through DVR with two control methods is investigated and the results are compared for both techniques. The outcomes of proposed control techniques, DVR and HAPF are discussed, correlated, and validated using MATLAB simulation software.