Mitigation Of Voltage Sag And Current Harmonic Elimination Using Reference Signal Generation Method Based On UPQC. This paper proposes a reference signal generation method for the UPQC adopted to compensate both current and voltage quality problems of sensitive loads. The shunt converter eliminates current harmonics originating load side and series converter eliminates voltage sag originating the supply side. The developed algorithm for the shunt controller and series controller for reference signal generation is based on Instantaneous Reactive Power Theory and nonlinear adaptive filter (phased-locked loop). The DC link control strategy is based on PI controller. The proposed UPQC mitigates the effects of voltage sag and suppresses the load current harmonics under distorted supply conditions. The proposed system is tested through simulation studies using MATLAB/SIMULINK environment.

V2I4_IJERTV2IS4962.pdf

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