Mitigation of Harmonics by Non-Linear Load Using Shunt Active Filter

Abstract

Abstract-Most of the pollution issues created in power systems are due to the non-linear characteristics and fast switching of power electronic equipment. Power quality issues are becoming stronger because sensitive equipment will be more sensitive for market competition reasons, equipment will continue polluting the system more and more due to cost increase caused by the built-in compensation and sometimes for the lack of enforced regulations. Efficiency and cost are considered today almost at the same level. Active power filters have been developed over the years to solve these problems to improve power quality. In This Paper It has been designed a hysteresis band PWM (HBPWM) current controller for a three level voltage source inverter (VS I) .The HBPWM approach has been selected for the research, since it has the potential to provide an improved method of deriving non-linear models which is complementary to conventional techniques. The simulation model of HBPWM current controller is developed in S IMULINK/MATLAB environment.