Induction Motor Its 2 Main Types
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Transcript of Induction Motor Its 2 Main Types
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.