Control Performance of Dynamic Voltage Restorer by V-control

Abstract

This paper presents the performance improvement of dynamic voltage restorer (DVR) by vector control (V-control ), which improves transient performance of DVR. Both current and voltage controllers are incorporated by V-Control, with an inner current control loop and outer voltage control loop. The loop gains are determined according to the system analysis, carried out on closed loop system. Also a review of the reported control techniques that have been implemented to control the injected voltage by DVR is presented. Simulation results have proved that the proposed algorithm is able to improve transient response of DVR.