Things you know about Induction Motor

Induction motor is used most commonly in electronic devices. In Induction motor the rotor rotates on the principle of Electromagnetic induction.
Working Principle:

Symbolic representation of Induction Motor

When we are giving supply to the stator winding , flux will generate in the coil due to the flow of current in the coil. The flux from the stator will cut the coil in the rotor and since the rotor coil are short circuited, according to Faraday's law of electromagnetic induction , current will start flowing in the coil of the rotor. When current will flow another flux will get generated in the rotor. Now there will be two flux & one is stator & another is rotor flux due to rotor flux, rotor will feel a torque which will make the rotor to rotate in the direction of rotating magnetic flux.

Applications

Induction motors unit is used in  approximately in 85 % of the industrial applications, due to their high quality.

Recently in electric vehicles field their is a lot of analysis. Induction Motor are not so common in city, as in their application has permanent magnet synchronous motors (PMSM) for better efficiency. It can be Used in: Fans, blowers, escalators, refrigerator, high speed trains, Electric Vehicles etc. Because of the simplicity of use, rugged nature and efficiency is what making it to carry more workload.

Types

There are basically two types of induction motor &  that depend upon the input supply - single phase induction motor and three phase induction motor. Single phase induction motor is not a self starting motor and whereas three phase induction motor is a self-starting motor.

Single phase motors have various starting arrangements. Capacitor start motors are probably the most common. There are also permanent split capacitor motors, shaded pole motors and others.

By far, the most common type of three phase motor is the squirrel cage  motor, but there are also wound rotor motors (also called slipring  motors). Squirrel cage motors have different torque & speed design types.

Types Induction Motor

Single Phase Induction Motor Parts

1.Split phase induction motor

2 Capacitor start induction motor

3. Capacitor start capacitor run induction motor

4. Shaded pole induction motor 

2.Three phase induction motor

1. Squirrel cage induction motor

2. Slip ring induction motor