Rotor Voltage Control

Rotor Voltage Object

Inverted rotor induction motor has additional rotor rings. These rings are used to make connection for the rotor measurement coils. These coils have been used to investigate induced voltage on the rotor.

The terminals of the three stator phase windings are star connected. Stator winding is connected to a three- phase voltage supply; currents will flow in each phase of this winding. These voltages will be displaced from each other by 120.

Rotor Voltage Wave

Harmonic spectrum of induced rotor voltage gives idea variations of the high order harmonics by taking into the consideration as a reference to the stator measurement coil. High order harmonics of the rotor voltage of the measurement coils are more than the stator voltage of the measurement coils. Therefore, we should investigate the effect of the slip on these two voltage harmonics. For this reason, we should have done load operation and blocked rotor operations of this motor. Harmonic analysis is performed by using these experimental values.