Simulation of Artificial Intelligent Controller Based DVR for Power Quality Improvement

Abstract

This paper Presents Simulation study of Dynamic Voltage Restorer based on Photovoltaic system. A Photovoltaic based DVR is used to mitigate the problems of voltage sag and swell. The Maximum Power Point Tracking Algorithm and DC-DC converter is used to extract maximum power from the Photovoltaic system. A Hysteresis based Control strategy is adopted for switching the voltage source Inverter of DVR. Perturb and Observation method is used as MPPT algorithm. When the grid is in normal operation DVR works for reducing the problems of voltage sag and swell, when the grid fails DVR works as Uninterrupted power supply(UPS) The proposed system is simulated in MATLAB/SIMULINK and the simulation results show that the proposed PV based DVR can efficiently reduce the problems of Voltage sags and swells.