Calculation of Arc Strength in DC Electric Arc Furnaces

Document Type : Original Article

Abstract

In  order  to  evaluate  the  operation  of DC  and  AC  electric  arc  furnaces,  the  amount  of  electrical  power
transferred  to  the  molten  bath  is  a  significant  item.  The  main  contribution  of  this  paper  is  calculating  the
foregoing  transferred  power  utilizing  the  arc  physical  and  electrical  characteristics.  In  this  paper,  first,  an
applicable  equation  for  DC  arc  current  density  is  analytically  extracted  utilizing  the  DC  arc  physical  and
electrical  parameters  such  as  arc  length,  arc  radius,  and  arc  current.  Then,  by  applying  the  electromagnetic
laws,  a  closed  form  equation  for  DC  arc  power  is  developed.  The  proposed  method  is  the  innovation  of  the
prepared  paper.  Likewise,  the  comparison  of  the  proposed  method  with  the  previous  published  results  in
literature  shows  a  desirable  compatibility  among  them  and  as  a  result  it  verifies  the  proposed  approach.
Furthermore,  in  order  to  validate  the  assumptions  concerning  DC  arcs,  some  experiments  are  performed  and
their results are revealed in this paper.

Keywords

References

[1]J. Jones, R. J. Schmitt, J. E. Goodwill, J. Kollar, “Understanding Electric Arc Furnace Operations”, Published by Electric Power Research Institute (EPRI) for Materials Production, Applicable SIC Codes: 3312,3325, TechCornmentary~TC-1077, 1997.##
[2] M. Sharifi, “Magnetic Field Modeling of a Direct Current Electric Arc Furnace”, The University of Toronto Library Manuscript Thesis, October 1994.##
[3] R. F. Ammerman, T. Gammon, P. K. Sen, J. P. Nelson, “DC-Arc Models and Incident-Energy Calculations”, IEEE Transactions on Industry Application, vol. 46, No. 5, pp. 1810-1819, September/October 2010.##
[4] J. k. Sparkes, “Comparison of Controlled Rectifier and Chopper Power Supplies for DC Smelting Furnace Applications”, University of Newfoundland, Canada, May 2004.##
[5] Q. G. Reynolds, R. T. Jones, “Semi-empirical Modeling of the Electrical Behavior of DC-Arc Smelting Furnaces”, The Journal of the South African Institute of Mining and Metallurgy, pp. 345-351, July 2004.##
[6] R. T. Jones, Q. G. Reynolds, M. J. Alport, “DC Arc Photography and Modeling”, Minerals Engineering Journal, vol. 15, pp. 985–991, July 2002.##
[7]Q. G. Reynolds, R. T. Jones, “Twin-electrode DC Smelting Furnace-Theory and Photographic Test-work”, Minerals Engineering 19 (2006) 325-333.##
[8] S. C. Chu, S.S. Lian, “Numerical analysis of temperature distribution of plasma arc with molten pool in plasma arc melting”, Computational Materials Science, vol. 30, pp. 441–447, March 2004.##
[9] M. A. Ramirez, “Mathematical Modeling of DC Electric Arc Furnace Operations”, Massachusetts Institute of Technology Thesis, September 2000.##
[10]  D. K. Cheng, “Field and Wave Electromagnetics”, Addison-Wesley Publishing Company, 1989.##
[11] A. Dehestani Kolagar, “Design, Modeling, and Control of the New Feeding Topologies for DC Electric Arc Furnaces”, A Thesis Submitted in Partial Fulfillment of the Requirement for the Degree of Doctor of Philosophy in Electrical Engineering, Iran University of Science and Technology (IUST), September 2013, (in persian).##
 
 
 
Applied Electromagnetics
Volume 3, Issue 4 - Serial Number 4
January 2016
Pages 19-28

Files

History

  • Receive Date: 21 January 2017
  • Revise Date: 06 March 2019
  • Accept Date: 19 September 2018
  • Publish Date: 21 January 2016

Share

How to cite

Statistics