Answer to Question #187663 in Engineering for Alock kumar

Question

Describe the power flow of a 3 phase induction motor.

Answer 1

Induction motor converts an electrical power supplies to it into mechanical power. The various stages in this conversion is called power flow in an inductor motor.

The three phase supply given to the stator is the net electrical input to the motor. 

This is nothing but the stator input.

The part of this power is utilised to supply the losses in the stator which are stator core as well as copper losses.

The remaining power is delivered to the rotor magnetically through the air gap with the help of rotating magnetic field. 

The rotor is not able to convert its entire input to the mechanical as it has to supply rotor losses. The rotor losses are dominantly copper losses as rotor iron losses are very small and hence generally neglected.