Types Of Induction Motors And Their Applications

Induction motors are categorized into two main types: single-phase and three-phase induction motors. And there are further classifications based on their way of starting.

 

Single-phase induction motors

The single-phase induction motor is not self-starting. A single-phase AC current supplies the primary winding and produces a pulsating magnetic field. These motors are designed to operate from single-phase supply and are manufactured in large quantities for use in homes, offices, factories, etc. There are four types of single-phase induction motors:

Split phase induction motor

Capacitor-start induction motor

Capacitor-run induction motor

Shaded pole induction motor

 

Applications of single-phase induction motors

Single-phase induction motors are used more widely than the three-phase system for domestic, commercial, and sometimes industrial purposes. Single-phase induction motors are favoured because the single-phase system is more economical, and the power demand load is lower in these environments.

Pumps

Compressors

Small fans

Mixers

Toys

High-speed vacuums

Electric shavers

Drilling machines

 

Three-phase induction motors

Three-phase induction motors are self-starting, so they require no starting device like single-phase motors. In a three-phase system, three wires provide the same voltage, but each phase is ramped up. The three-phase induction motor converts electrical energy into mechanical energy. The two types of three-phase induction motors are:

Squirrel cage motors

Slip ring motors

 

Applications of three-phase induction motors

Three-phase induction motors are used for commercial and industrial purposes, ideal for higher-power applications.

Lifts

Cranes

Hoists

Large exhaust fans

Lathe machines

Crushers

Oil extracting mills

Textiles

Commercial electric and hybrid vehicles