Investigation of Electromagnetic Force for Magnetic Contactor of Railway Vehicles

철도차량용 전자접촉기 전자코일의 전자기력 특성 연구

  • Jung, Jooyoung (Department of Mechanical Engineering, Hanbat National University) ;
  • Park, Ji-Won (Department of Mechanical Engineering, Hanbat National University) ;
  • Choi, Jinnil (Department of Mechanical Engineering, Hanbat National University)
  • Received : 2015.10.14
  • Accepted : 2016.06.15
  • Published : 2016.06.30


A magnetic contactor is a switching device widely used for electric circuits. For the operation of magnetic contactors, magnetic coils are essential; these coils create and interrupt the electric circuit. In this paper, the finite element analysis model was developed to reflect the experimental data, and was verified through alteration of the applied voltages and the numbers of turns. Effects of electromagnetic force on the geometrical variations of the facing poles for fixed and moving cores of two magnet coils were investigated. In addition, effects of slope and air gap size between two facing poles on the electromagnetic force were explored through the distribution of the magnetic flux density in the magnetic coils of a push-type solenoid. Through this analysis, the characteristics of the electromagnetic force against the facing poles were explored.


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