A Comprehensive Evaluation of Different Power Quantities in DC Electric Arc Furnace Power Supplies

Conventionally, DC arc furnaces are fed by thyristor rectifiers to control the level of current or power transferred load. With advancement high-power transistors, other structures such as diode and choppers have been introduced developed for feeding system electric furnaces. In this paper, effect different supply systems on quality indexes is discussed. regard, two types considered, including a based choppers. addition, methods, constant (CCC) (CPC), applied. For evaluating indexes, voltage harmonic distortion, unbalance current, factor AC side investigated systems. Simulation results were performed with PSCAD/EMTDC software. It shown that superiority in comparison rectifiers. According results, average THD reduced from 16.55% rectifier 8.40% chopper CCC method 19.27% 7.38% CPC method. Moreover, 5.67% 3.02% The result similar Furthermore, specific system, distortion lower case than