Dynamos/eletric motors

1 ANSWERS

1. amomipais82
   

   Hi,
   The two main parts of a generator or motor can be described in either mechanical or electrical term:
   
   Mechanical:
   
       * Rotor: The rotating part of an alternator, generator, dynamo or motor.
       * Stator: The stationary part of an alternator, generator, dynamo or motor.
   
   Electrical:
   
       * Armature: The power-producing component of an alternator, generator, dynamo or motor. In a generator, alternator, or dynamo the armature windings generate the electrical current. The armature can be on either the rotor or the stator.
       * Field: The magnetic field component of an alternator, generator, dynamo or motor. The magnetic field of the dynamo or alternator can be provided by either electromagnets or permanent magnets mounted on either the rotor or the stator.
   
   Because power transferred into the field circuit is much less than in the armature circuit, AC generators nearly always have the field winding on the rotor and the stator as the armature winding. Only a small amount of field current must be transferred to the moving rotor, using slip rings. Direct current machines necessarily have the commutator on the rotating shaft, so the armature winding is on the rotor of the machine.

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