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Harmonic Propagation Damping in Ring Power Distribution Systems using an Active Filter

This paper presents an analysis to select the best location for a shunt active power filter, aimed at damping the resonances in a ring power distribution network. The active filter, which is based on the voltage detection method, behaves as a high impedance at the fundamental frequency, and as a low resistance at harmonic frequencies. Simulation and experimental results show that the active filter can damp out harmonic propagation throughout the power distribution line.