Induction motor

nchodenchode Forum Coordinator Posts: 0
If induction motor is also called a rotating transformer. Why is its efficiency less than the transformer?


  • VivekKVivekK Pune, IndiaPosts: 89Forum Coordinator

    There are two reasons for this

    1. Because it is rotating - It will have friction and windage loses. Transformer has no moving parts

    2. Because there is an air gap between stator and rotor - This increases the mmf and magnetizing current to push the magnetic flux overcoming the air gap reluctance. The additional mmf needs to be supplied from the input supply

Sign In or Register to comment.