Stability of a levitation melting system fed by an ideal series resonant converter

Raul Rabinovici, Vadim Berdichevsky, Moshe Shvartsas

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

Electromagnetic levitation melting process is occasionally employed in the metallurgical industry to melt metals in a sterile environment without the risk of specimen contamination by crucible materials. The stability of this process is affected by the system geometry, the construction materials and the power supply design. This paper presents a new analytical stability analysis model of a levitation-melting system fed by an ideal series resonant converter working with a constant switching frequency. It is found that a response delay, of the current envelope signal in the coil, to changes in specimen position has an impact on the system stability. Simulation results validate the developed analytical model.

Original languageEnglish
Title of host publicationProceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
Pages5058-5063
Number of pages6
DOIs
StatePublished - 1 Dec 2013
Event39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 - Vienna, Austria
Duration: 10 Nov 201314 Nov 2013

Publication series

NameIECON Proceedings (Industrial Electronics Conference)

Conference

Conference39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013
Country/TerritoryAustria
CityVienna
Period10/11/1314/11/13

Keywords

  • amplitude modulation
  • eddy currents
  • electromagnetic forces
  • envelope detection
  • inverters
  • levitation
  • melt processing
  • simulation
  • stability analysis

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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