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 remaining power is delivered to the rotor magnetically through the
air gap with the help of rotating magnetic field. This is called rotor
input denoted as P2.
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. So rotor
losses are rotor copper losses denoted as Pc.
motor tries to deliver to the load connected to the shaft. But during
this mechanical transmission, part of Pm is utilised to provide mechanical losses like friction and windage.
|Fig. 1 Power flow diagram|