Applications of single and three phase induction motor

Short video description

Non-Uniform magnetic field produces a non-uniform torque which makes the operation of the motor noisy, affect starting torque. A single phase induction motor consists of a single phase winding on the stator and a cage winding on the rotor. When a 1 phase supply is connected to the stator winding, a pulsating magnetic field is produced. In the pulsating field, the rotor does not rotate due to inertia.

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Types of single phase induction motors

Applications of single and three phase induction motor

Three Phase Induction Motor: Construction and Working Principle

Induction machines are the most frequently-used type of motor used in residential, commercial, and industrial settings so far. In an induction motor, the electric current in the rotor needed to produce torque is obtained via electromagnetic induction from the rotating magnetic field of the stator winding. An induction motor is a generally used AC electric motor. The rotor of an induction motor can be a squirrel cage rotor or wound type rotor. Used in different applications, induction motors are also called Asynchronous Motors. This is because an induction motor always runs at a slower speed than synchronous speed.

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Three Phase Induction Motor: Construction and Working Principle

The single-phase motors are more preferred over a three-phase induction motor for domestic, commercial applications. Because form utility, only single-phase supply is available. So, in this type of application, the three-phase induction motor cannot be used. A single phase induction motor is similar to the three phase squirrel cage induction motor except there is single phase two windings instead of one three phase winding in 3-phase motors mounted on the stator and the cage winding rotor is placed inside the stator which freely rotates with the help of mounted bearings on the motor shaft.

Single phase induction motors are used in a wide range of applications where only single phase supply is available. These are manufactured in fractional kilowatt range to meet the requirements of various applications such as ceiling fans, food mixers, refrigerators, vacuum cleaners, portable drills, hair driers, etc. As the name suggests, these motors operate on single phase AC supply.