Power Flow in an induction motor

In the induction motor, as in all motors, electrical energy is converted into mechanical energy. 

Some of the electrical energy supplied to the stator is lost as copper and iron loss in the stator.  The remainder of the energy is given as input power to the rotor through induction between the stator and the rotor.  The electrical power supplied to the rotor is used to produce the mechanical power in the shaft.  In the rotor, some of the power is lost as heat.  The electric power in the rotor is converted into mechanical power.

This power is available as the rotor output excluding the losses in the rotor (friction and the windage losses) 

The Power Flow Diagram of the induction motor is as follows



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