Power Quality Improvement Features for a Distributed Generation System using Shunt Active Power Filter

Electric utilities and end users of electric power are becoming increasingly concerned about meeting the growing energy demand. Renewable energy source (RES) form an invincible part of electric power distribution. Wind energy which forms one of the major available renewable energy sources. In this paper a grid interfacing inverter is designed which acts as a power converter to inject power generating from RES to grid and also act as Shunt Active Power Filter (SAPF) to minimize the harmonics, load neutral current. A new control approach named Unit Vector Template Generation (UVTG) is designed for SAPF and presented in this paper. The simulation has been done for three phase four wire (3P4W) distribution system.