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Research on Active Harmonic Resister to damping resonance in distribution system

In power distribution network, resistor is commonly series with the passive filter in order to avoid its resonance with line impedance. A power electronics converter based Active Harmonic Resister (AHR) is proposed in the paper to replace the passive resistor. With the proposed method, potential resonance could be efficiently suppressed, and the active power loss in passive resistor is gone. The proposed method requires no sensor in power supply grid, which could gain good application perspective.