Experimental Validation of Dynamic Voltage Restorer for Mitigating Diverse Power Quality Problems

Dynamic Voltage Restorer (DVR) has proven to be the most efficient, effective and economic solution for voltage based power quality problems. This paper presents design, analysis and experimental validation of Power Balance Theory (PBT) based capacitor-supported dynamic voltage restorer for reducing various voltage related power quality problems like voltage sag, voltage swell, voltage harmonics and voltage imbalance. The control algorithm based on Power Balance Theory (PBT) is used for producing reference voltage signals. The viability of DVR controller is assessed by employing MATLAB/Simulink software and the performance of suggested DVR is experimentally investigated by Digital Real Time Simulator.