A traction motor determines the characteristics and service capacity of electric locmotives to a large extent. The characteristics and parameters of the motor have an influence on the technical and economic aspects of electric traction as a whole. Before examining the prospects of the electric traction motor, the author briefly describes achievements made thus far and, on the basis of criteria shown in a table, he evaluates progress made in building electric tractive units in the USSR. A rated output of 1300-1400 kW per axle will be required for electric tractive units in the future. A very difficult problem remaining is that of developing a commutator motor having a 1300-1400 kW rating when the torque is increased and its mass and dimensions remain the same. At present, it has been found possible to use alternating current motors without commutators (synchronous or asynchronous) fed from a variable-frequency phase convertor with thyristors for electric engines. The article gives an evaluation of the synchronous and asynchronous motors used on the Soviet Railways. Tests carried out on electric trainsets powered by a motor without a commutator have confirmed their theoretical capabilities in service. However, it is not likely that these locomotives will be produced in series in the near future. There are other possibilities of obtaining a high rating for given dimensions. The author describes aspects of using a traction motor without a commutator in the form of a disc. Driving several axles with a single motor will also open even more possibilities for obtaining a high output.

  • Corporate Authors:

    Ministerstvo Putei Soobshcheniya SSSR

    Novoryazanskaya ul., Dom 12
    Moscow 288,   USSR 
  • Authors:
    • Kurbasov, A S
  • Publication Date: 1974


  • Russian

Media Info

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Filing Info

  • Accession Number: 00095659
  • Record Type: Publication
  • Source Agency: International Railway Documentation, Selection of
  • Files: TRIS
  • Created Date: Jul 2 1975 12:00AM