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Wheel slip control on a traction drive works by

  • A.increasing the torque until the wheel regains adhesion
  • B.reversing the direction of the slipping motor briefly
  • C.reducing torque when a wheelset accelerates abnormally
  • D.applying the friction brakes to the slipping wheelset

Answer: C

Comparing the speeds of the axles reveals the one that has broken adhesion, and backing off its torque lets it recover within a fraction of a second. Independent control of each axle is one of the advantages of individual inverter drives.

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