Integrated UPQC Based Design and Performance Analysis of Three-Phase Solar PV

This project mainly deals with the improvement of the power quality of the output of the three phase single stage Solar Photo Voltaic plant by coordinating it with the Unified Power Quality Conditioner (UPQC). The UPQC contains shunt and series voltage compensators connected in back to back connection. These are used to extract the power from the PV array as well as compensating the voltage and load current harmonics. The compensator injects the voltage in-phase/out of phase with point of common coupling (PCC) voltage during swag and swells conditions to improve the voltage at load side. Thus by combining the Solar PV Array with UPQC we can obtain clean energy with improved power quality. Due to the increase of electricity load demand in upcoming future, the power generation must also increase as the demand. The excess use of limited traditional resources such as coal, diesel fuels etc., causes global warming and air pollution which is leading us to use to renewable energy resources. Available renewable energy resources may include solar, wind, tidal as the source for energy production. These are mainly used in small quantities as Distribution Generators (DG) at different locations in a bus system and many more. As the generation of these energy sources is produce less when connected to grid, so we call them as micro-grids. These micro grids generally use these DGs to distribute power to various loads, and involve some power electronic elements to control the energy generation. Also it induces energy into the load system but also create a major problem of harmonic distortions and voltage sags.