Abstract
The paper presents the research data of the electrical power converters used for a powering industrial vacuum DC arc furnace. The authors have analyzed energy performance of the power converter with a parametric current source (PCS) and the converter based on switched-mode power supply (SMPS) units with IGBT switches. The research shows that the converter with SMPS units has greater efficiency, thereby reducing specific energy consumption. To improve power quality in industrial power grids, which provide electricity to high-current DC loads, a converter design based on current-source-type active rectifiers is proposed. The simulations carried out by the authors have shown that desynchronization of AR switching processes in the proposed converter system allows one to reduce total harmonic distortion (THD) of the mains voltage.
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