JEE_V2_N1_RP3 N.S. Sakthivel Murugan A. Nirmal Kumar T. Vijayakumar Journal on Electrical Engineering 2230 – 7176 2 1 21 26 DVR, Inverter, Matlab, Simulink Among the various power quality problems, the voltage sags, is attracting a large amount of attention of researchers from industry. Dynamic Voltage Restorer(DVR) gives the solution to the above mentioned problem. The main function of DVR is to mitigate the voltage sag. It controls voltage applied to the load by injecting voltage of compensating amplitude, frequency and phase angle to the distribution line. The DVR is primarily responsible for restoring the quality of voltage delivered to the end user when the voltage from the source is not appropriate to be used for sensitive loads. Usage of DVR enables consumers to isolate and protect themselves from transients and disturbances caused- by sags. DVR is simulated using MatLab. The simulation results are compared with the analytical results. July - September 2008 Copyright © 2008 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=326