The simulation results show the effectiveness of the APFs in improving the power quality indices.Ĭrown Copyright © 2010. The above design was implemented in the EAF system of the Mobarakeh steel complex (Isfahan, Iran). The proposed control system not only reduces the voltage and current harmonics in power systems but can also improve the power quality indices. With the Filter Designer app you can design and analyze FIR and IIR digital filters. You can use the Signal Analyzer app for visualizing and processing signals simultaneously in time, frequency, and time-frequency domains. For the third part of the control system, we use a PI controller to provide some conditions that follow the reference current in a complete cycle, and generate firing pulses by the hysteresis method. The toolbox includes tools for filter design and analysis, resampling, smoothing, detrending, and power spectrum estimation. In the second part, the DC capacitor voltage regulator is applied, producing a reference current and a proper voltage regulator is developed. In the first part, the active filter control system is presented based on the combination of the synchronous detection method and instantaneous power theory. The system is composed of three main parts: computation of reference currents, regulation of DC capacitor voltage, and production of firing pulses. In this paper, a new control system for designing active filters despite nonlinear loads of electric arc furnaces (EAFs) is presented. Statistical performance of EAs of multivariable PI controller without tolerance. ![]() In order to improve the power quality, active power filters (APFs) can be used. The voltage & current harmonics produced by nonlinear loads in power systems cause a reduction in power quality.
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