一种基于三相有源滤波器的整流器拓扑结构

novel three-phase dynamically decoupled active power filter (APF) topology suitable for compensating three phase rectifier loads has been proposed. 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. With superior stability characteristics, it reduces possibilities of load source impedance resonance. The system control is relatively simpler than conventional active power filters and it is immune to the one cycle delay inherent in 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 APF has been studied analytically and simulation results using PSCAD/EMTDC have been presented.