AC MACHINES-1 (66761) Theory

In the case of an asynchronous machine where the winding of the rotor coupled in star or delta configuration, the rotor voltage is linked to the slip which is the difference between the speed of the flow and the speed of the rotor.

Rotor as the name suggests it is a rotating part of an electrical machine, in which current is induced by transformer action from rotating magnetic field. Induction motor rotor is of two types: Squirrel Cage Rotor. Wound Type Rotor or Slip Ring Type Rotor.

In a three-phase induction machine, alternating current supplied to the stator windings energizes it to create a rotating magnetic flux. ... The rotor circuit is shorted and current flows in the rotor conductors. The action of the rotating flux and the current produces a force that generates a torque to start the motor.

The stator is the stationary part of the machine, whereas the rotor is the movable part of the machine. The stator core, stator winding and the outer frame are the three parts of the stator whereas the rotor core and field winding are the parts of the rotor. The three-phase supply is given to the winding of the stator.