INVESTIGATION ON SHUNT ACTIVE POWER FILTER USING PI CONTROLLER

This paper describes the application of PI controller to a three phase shunt active power filter for power quality improvements and reactive power compensation required by a nonlinear load. Most active power filter use PI controller in the voltage/current control loop. The use of PI controller is simple and easy to implement. However, the design of PI controller requires a precise linear mathematical model. Switching signals for voltage sourced PWM converter are generated through hysteresis current control. The performance of shunt active power filter is evaluated using MATLAB/SIMULINK simulation