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A

Amortisseur winding

A squirrel-cage winding placed near the surface of the pole faces of a synchronous motor. Its main purpose is to dampen any speed fluctuations that may occur as a result of sudden load changes. It is also used to accelerate the motor during starting. As the rotating field moves past the winding it induces currents in the winding which produce torque and accelerate the motor.

Armature

  • The portion of a motor, generator or alternator, that carries the main or AC current.
  • The moving part of a solenoid or relay.

◄ Rotating Magnetic Feild
Formulae for Rotating Machines ►