Switching Frequency Calculation for Predictive Control Method in Active Power Filter Application

This paper proposes a switching frequency computation method for voltage source inverter used in active power filter (APF) application using the predictive current control (PCC) technique. The switching frequency has been estimated in discrete-time domain on instantaneous basis. The controller current tracking performance has been evaluated in frequency domain by the bode plot. The constituents of the load current, i.e., reactive and harmonic components have been compensated to make the grid current close to sinusoidal waveshape and in phase with the grid voltage using APF. The simulation has been performed in Typhoon Simulink environment and a Typhoon HIL-402 kit is used for the experimental results.