Hi guys,

I was wondering if the stator current parameters, equivalent circuit and phasor diagrams of an induction motor would change if I were to replace the cage rotor of the motor with a permanent magnet rotor.

Thanks

 

In a permanent magnet motor, torque is produced by the interaction of the stator magnetic field with the fixed magnetic field of the rotor, rather than by induced currents in the rotor. Replacing the rotor will change the torque-speed characteristics significantly.

 

I understand. But my query is pertaining to the circuit modeling of the induction motor in such a modified condition.

Will the equivalent circuit and phasor diagram still resemble that of an induction motor or will they change to those of a synchronous motor?