Traction motor, including traction machine, traction generators, auxiliary motors.

Moving the locomotive traction motors used to drive a car or a few fixed axle of the motor. There are many types of traction motors, such as the DC traction motor, AC induction traction motors and AC synchronous traction motors. DC traction motor, in particular the DC series motor has good speed performance and operating characteristics, to adapt to the needs of locomotive traction characteristics, is widely available.

The working principle of traction machine and the general DC motors the same, but there are special working conditions: space by the gauge and size restrictions on driving wheel diameter; in the locomotive running through the rail joints, and when to bear a large turnout of shock and vibration; large and small gear Poor engagement when the armature will have a strong torsional vibration; use in harsh environments, rain, snow, Fui Sha easily penetrated and so on. Therefore, in the design of traction machine and structure, there are many requirements, such as to make full use of interior space to compact the body to use more advanced insulation materials and magnetic materials, components must have high mechanical strength and stiffness, the entire motor The need for good ventilation conditions and dust proof ability, to take special measures to cope with the more difficult "for the" under conditions to reduce the carbon brush spark and so on.