Induction Motor definition and working principles

The induction motor is an electromechanical device which successfully converts electrical energy to mechanical. It can be of two types, single phase induction motor or three phase induction motor. But the three phase motor has a wider use in industries and homes. This is because does not require any starting device i.e. it is a self-starting induction motor.

To understand its working principle, let’s take a look at its structural parts. The induction motor consists of two major parts Stator and Rotor.

Stator: the stator consists of a number of slots which makes a 3 phase winding current. The stator is in conjunction with the 3 phase AC current source. Its arrangement is such, that the slots are capable of making rotating magnetic field after 3ph.

induction motor

Rotor: The rotor is a cylindrical core enabled with lamination. It consists of the parallel slots which carry the conductors. These conductors are mostly copper or aluminium which easily fits the slot. They are very heavy and short-circuited with the end rings. Here the arrangement is not exactly parallel and it helps in reducing the humming noise of the magnet and avoids stalling of the motor.

 watch video on next page to understand better-


  1. Ravi November 7, 2017
  2. Josph pardeep kumar November 18, 2017

Add Comment