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

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Applied Electromagnetics
Volume 3, Issue 4 - Serial Number 4
January 2016
Pages 19-28

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History

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

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