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Simulation of Three-Phase Active Filter for Harmonics Reduction and Reactive Power Compensation

Rajesh Kr Ahuja, Sushil Verma, Bhupender Dhul

This paper presents a simulation of a simple control scheme for a three-phase shunt active filter to remove harmonics and reactive power compensation of the non-linear loads. A 3-phase voltage source inverter bridge with a dc bus capacitor is used there as an active filter (AF). A PWM current control is used to generate the gating signals to the AF. Source reference currents are calculated from load currents, dc bus voltage and source voltage. The command currents for AF are calculated using source reference currents and load currents. A three- phase diode rectifier with resistive loading is used as non-linear load. The validity of scheme is shown by simulation results.