A novel technique for mitigation of voltage sag/swell by Dynamic Voltage Restorer (DVR)

This paper deals with modeling and simulation technique of a Dynamic Voltage Restore (DVR). The DVR is a dynamic solution for protection of critical loads from voltage sags / swells. The DVR restores constant load voltage and voltage wave form by injecting an appropriate voltage. Present novel structure improves power quality by compensating voltage sag and voltage swells. This paper discussed abc to dq0 base new control algorithm to generate the pulse. The proposed control scheme is simple to design and has excellent voltage compensation capabilities. Effectiveness of proposed technique is investigated through computer simulation by using MATLAB/SIMULNK software. The simulation results have shown validation of the control system.