System integrated active power filter for three-phase rectifier application

This paper proposed a novel three-phase dynamically decoupled active power filter (APF) topology suitable for compensating three-phase rectifier loads. With superior stability characteristics, the possibilities of load source impedance resonance can be eliminated. This active filter can be implemented in combination with passive filters thus power rating and heat dissipation of voltage source inverter stage can be minimized. The system control is relatively simpler than conventional active power filters and it is immune to the one cycle delay inherent in Digital Signal Processor (DSP) implementation. This filter can provide cost effective solutions for system-integrated design of harmonic free power supply system where the filter is supposed to be a part of application. The proposed topology of three-phase Matlab/Simulink have been presented and discussed.