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Research on Active Harmonic Resister based on repetitive control technique

A control method named Active Harmonic Resistance (AHR) using repetitive control technique is proposed to suppress the resonance between the power capacitor and system inductance in power distribution network. Firstly, this paper explains the theory of AHR and its low voltage tracking precision. Secondly, the parameters design and stability analysis of repetitive controller applied in the voltage loop of AHR system are presented. At last, the simulation results show high voltage tracking accuracy and good resonance suppression of this control method.