A three-phase induction motor is an electric motor that runs on a three-phase AC supply. It's also known as a synchronous motor because it operates at a different speed from synchronous momentum.  Three-phase induction motors are known for being robust, efficient, and able to run under variable load conditions. They are built for everyday use in any environment.  Here's how a three-phase induction motor works: A current is applied through the stator, which induces a magnetic field. The magnetic field causes the rotor current to be induced, instead of electrical connections. The... Show more

A three-phase induction motor is an electric motor that runs on a three-phase AC supply. It's also known as a synchronous motor because it operates at a different speed from synchronous momentum. 

Three-phase induction motors are known for being robust, efficient, and able to run under variable load conditions. They are built for everyday use in any environment. 

Here's how a three-phase induction motor works:
A current is applied through the stator, which induces a magnetic field.
The magnetic field causes the rotor current to be induced, instead of electrical connections.
The rotational speed of the shaft and the applied torque depends on the operating frequency and the number of pole pairs in the motor's windings.
The unidirectional rotating magnetic field developed in air gap causes the motor to self-start. 

Three-phase induction motors consist of two parts:
Stator: A three-phase static winding
Rotor: A rotor winding which is a short-circuited winding 

Some types of three-phase motors include:
Plain or squirrel cage induction motors
Double squirrel cage motors
Slip-ring or wound-rotor induction motors 

Related:

Wireman Practice Test: Synchronous Motor

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