Implementation of synchronous reference frame strategy based Shunt active filter

Shunt active filter, among the various active filter configurations reported so far, have been recognized as one of viable solutions to current harmonic compensation. In this paper, the SRF strategy is used to generate current reference for compensation and conventional PI controllers can be used as the controller. The design of the closed loop controllers is kept simple by modeling them as first order systems. Computationally simple and efficient SVM technique used to utilize DC bus voltage more efficiently and generates less harmonic distortion in a three phase voltage source inverter. In this work a three phase rectifier is taken as load and is simulated in PSIM to calculate the total harmonics content of the load. The rating of Shunt active filter is finalized based on the harmonic demand of the load. The proposed control and SVM techniques are validated by simulating in PSIM software.