Two main types of Induction Motor

An induction motor also known as an asynchronous motor or squirrel-cage motor is a

type of an AC (alternating current) motor. In an induction motor, power is supplied to

the rotor via an electromagnetic induction. The induction motor makes use of magnets

to produce mechanical energy from electrical energy, which in turn turns the axle of the

motor. The mechanical energy that is formed is used to push the liquid from one place

to the other with the help of pumps and also even to carry air by means of blowers or

ceiling fans.

The induction motors that are used most commonly in many industries today are 3-

phase induction motor or a single-phase induction motor.

Single phase induction motor:

Single-phase induction motors are used the most when it comes to the usage induction

motors today. This type of AC motor is the least expensive and requires the lowest

maintenance, and thus is used the most. Single- phase induction motors use concise

type of wire loops on a frame and attain their torque from currents stimulated in these

loops by the altering magnetic field formed in the stator (stationary) twirls.

The voltage that is induced in the coil results in a formation of a clockwise torque.

Unlike the 3 phase induction motor, the stator frame in the single-phase motor does not

revolve. Instead it merely alternates divergence between poles as the AC voltage

changes polarization.

3-Phase induction motor:

A 3-phase induction motor is capable of operating from a three-phase source of

alternating voltage. The squirrel cage is the most common type of 3-phase induction

motor. The 3-phase induction motor has a stator which is a typical three phase stator

with the twisting displaced by 120°. At the time when three currents run throughout the

three proportionately located windings together, a sinusoidally dispersed air opening

flux creating a rotor current is formed. The linkage between the sinusoidally dispersed

air opening flux and stimulated rotor currents generates a torque on the rotor.

The inverter changes the DC (direct current) power to AC (alternating current) power at

the necessary frequency and amplitude.

These are the two main types of induction motors that most commonly used in most of

the industries now-a-days.