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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimir: 1093-3611
ISSN En Línea: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v3.i1.10
pages 1-15

MODELLING OF INDUSTRIAL AC-ARCS

G. A. Saevarsdottir
Department of Materials Technology and Electrochemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
Hilde Loken Larsen
Department of Metallurgy, Norwegian University of Science and Technology (NTNU) Trondheim, Norway
Jon Arne Bakken
NTNU, SINTEF Metallurgi Alfred Getz vei 2B N67034 ; and Department of Materials Technology and Electrochemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway

SINOPSIS

An improved Channel Arc Model for simulation of AC arcs on ordinary PC's is presented. In this model the arc is treated as a cylindrical current conductor with uniform radius and a prescribed radial temperature distribution. In order to verify the model, laboratory arcs with I mrs ≈ 1000 A, as well as industrial arcs with I mrs ≈ 100 kA, are simulated and compared to measured values. Assuming symmetrical furnace conditions, the three-phase electric circuit is first simplified to a one-phase description which is compared to values from an industrial submerged arc furnace. In order to generalize the model, and to be able to simulate also asymmetrical furnace conditions, the complete three-phase circuit is included and results obtained from the three-phase simulations are compared with one-phase simulations. In addition, the effect of a charge current, which bypasses the arc, is shown in the three-phase description.


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