Predictive voltage control of Renewable Energy Sources Fed DVR

Abstract

The dynamic voltage restorer (DVR) is a custom power device used for voltage compensation of sensitive loads against voltage disturbances in power distribution lines. The DVR can regulate the load voltage from the problems such as sag, swell, and harmonics in the supply voltages. Hence, it can protect the critical consumer loads from tripping and consequent losses. In this project a predictive voltage control scheme for the effective control of a transformer less dynamic voltage restorer (TDVR) is presented. This control scheme utilizes the discrete model of a voltage source inverter and an interfacing filter for the generation of the switching strategy of inverter switches. Predictive voltage control algorithm-based TDVR tracks the reference voltage effectively and maintains load voltages sinusoidal during various voltage disturbances as well as load conditions. Moreover, this scheme does not require any linear controller or modulation technique. The simulation results are presented .The proposed concept is implemented to Renewable Energy sources fed DVR using matlab/simulink software.