Application of linear induction motor for tension supply and heating to thin sheet steel

Takahiro Yamada, Keisuke Fujisaki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A linear induction motor to be able to achieve induction heating and tension in thin steel sheet treatment process is researched. The major problems in the application of the linear induction motor are meandering of thin steel sheet by the electromagnetic force in the normal direction, the heating characteristic, and the evaluation of the thrust force as a tension. As a result of the investigation of the frequency characteristic by means of electromagnetic FEM calculation, it is confirmed that the electromagnetic force in the normal direction which consists of repelling force caused by the magnetization and repulsive force caused by Lorentz force becomes almost zero at the crossover frequency. In this frequency, the temperature of the steel sheet at the front and back have almost the same distribution. Since the tension value converted from the thrust force is about 10% of experiment equipment, the linear induction motor is also useful for the auxiliary function of the tension roll.

Original languageEnglish
Pages (from-to)38-47
Number of pages10
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number2
Publication statusPublished - 2009 Jul 30


  • Crossover frequency
  • Electromagnetic force
  • Induction heating
  • Linear induction motor
  • Tension

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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