Mitigation Of Voltage Sag, Swell And Thd Using Dynamic Voltage Restorer With Photovoltaic System

Abstract

The most severe power quality problems are known as voltage sag, swell and harmonics. Series connected custom power device called as dynamic voltage restorer (DVR) is the most effective device used in electrical systems to compensate these power quality problems.

Traditional DVR compensates only voltage sag/swell in electrical grids. The main contribution of this paper is that FFT based a novel reference generation method is used in DVR to compensate unbalanced voltage sag/swell and unbalanced voltage harmonics, simultaneously.