The induction motor is similar to
the transformer with the exception that its secondary windings are free to
Where ER is the induced voltage in the rotor and RR is the rotor resistance.
we can calculate the rotor current as,
Where ER0 is the induced voltage and XR0 is the rotor reactance at blocked rotor condition (s = 1).
Now as we managed to solve the
induced voltage and different frequency problems, we can combine the stator and
rotor circuits in one equivalent circuit