Power Quality Enhancement Using UPQC connected with PV Arrays

This paper deals with the importance of UPQC in the power quality improvement of the distribution system with non linear load. The unified power quality conditioner (UPQC) is a power conditioning device, which is an integration of back to back connected shunt active power filter and series active filter with a common DC link voltage. To reduce of power quality (PQ) problems in a distribution system; a 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 distorted supply and a combination of linear and non-linear load.