Adaptive based controller for three phase UPQC as solution for power quality improvement in sensitive load

Abstract

This study proposes a new efficient control system for unified power quality conditioner it is possible to reduce the voltage fluctuations like sag and swell conditions and current and voltage harmonics isolation in distribution systems. The UPQC which can be used at the PCC for improving power quality is modeled and simulated using proposed control strategy and the performance is compared by applying it to a distribution system with and without UPQC. Performance of this UPQC has been evaluated with a typical industrial load with realistic parameters supplied by a polluted distribution network. Dynamic model of the UPQC is developed in the MATLAB/SIMULINK environment and the simulation results demonstrating the power quality improvement in the system are presented for different supply and load conditions. © Medwell Journals, 2010.