Wheel-slip control method for seeking maximum value of tangential force between wheel and rail

Keiichiro Kondo*, Ikuo Yasuoka, Osamu Yamazaki, Shinichi Toda, Yosuke Nakazawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A method for reducing motor torque in proportion to wheel slip is applied to an inverter-driven electric locomotive. The motor torque at wheel-slip speed is less than the torque at the maximum tangential force or the adhesion force. A novel anti-slip control method for seeking the maximum value of the tangential force between the wheel and rail is proposed in this paper. The characteristics of the proposed method are analyzed theoretically to design the torque reduction ratio and the rate of change of the pattern between the wheel-slip speed and motor current. In addition, experimental tests are also carried out to verify that the use of the proposed method increases the traction force of an electric locomotive driven by induction motors and inverters. The experimental test results obtained by using the proposed control method are compared with the experimental results obtained by using a conventional control method. The averaged operational current when using the proposed control method is 10% more than that when using the conventional control method.

Original languageEnglish
Pages (from-to)101-108
Number of pages8
Journalieej transactions on industry applications
Issue number1
Publication statusPublished - 2012
Externally publishedYes


  • Anti-slip control
  • Electric locomotive
  • Electric railway vehicle
  • Induction motors
  • Seeking the peak on tangent force
  • Vector control

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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