Mitigation of Arc Furnace Voltage Flicker Using an Innovative Scheme of Adaptive Notch Filters

This paper presents an innovative application of the adaptive notch filters for flicker disturbance extraction and mitigation. This paper demonstrates a new cascaded scheme of adaptive notch filters and regular notch filters. This suggested scheme is used for tracking the frequencies of flicker disturbances and for the instantaneous extraction of these disturbances. Furthermore, this paper exhibits the utilization of a developed compensation strategy that employs shunt and series power conditioners to intelligently mitigate voltage flicker that emanates from electric arc furnaces. The proposed schemes for frequency tracking, disturbance extraction, and flicker mitigation are verified by simulation results using real voltage and current flicker waveforms of the ac arc furnace.