What is the principle of induction motor?

Working Principle of Induction Motor The motor which works on the principle of electromagnetic induction is known as the induction motor. The electromagnetic induction is the phenomenon in which the electromotive force induces across the electrical conductor when it is placed in a rotating magnetic field.

What is the principle of a 3 phase induction motor?

The working of the three-phase induction motor is based on the principle of electromagnetic induction. When three-phase stator winding of an induction motor is energized from a 3 phase supply, a rotating magnetic field is set up which rotates around the stator at synchronous speed (Ns).

What are 3 phase induction motors used for?

Applications of 3-Phase Wound-Rotor Induction Motor They are used for loads that requires speed control. Typical applications of wound rotor or slip ring induction motors are crushers, plunger pumps, cranes & hoists, elevators, compressors and conveyors.

What is the operation principle of 3 phase induction motor Explain briefly with necessary sketches?

The stator of an induction motor consists of a number of overlapping windings offset by an electrical angle of 120°. When the primary winding or stator is connected to a three phase alternating current supply, it establishes a rotating magnetic field which rotates at a synchronous speed.

What are the types of 3 phase induction motor?

There are three types of 3- phase induction motors namely plain or squirrel cage induction motor, slip-ring or wound rotor induction motor and double cage rotor induction motor.

What are the 2 main parts of a 3 phase AC motor explain the principle on how a 3 phase AC motor moves?

A three-phase motor has two main parts: the rotor, which turns, and the stator that turns it.

What is 3phase induction motor PDF?

Introduction: The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. They run at a constant speed from no-load to the full load. Therefore, these motors are frequently used in industry. Induction Motor Parts.

What is rotating magnetic field in 3 phase induction?

When a 3-phase winding is energized from a 3-phase supply, a rotating magnetic field is produced. This field is such that its poles do no remain in a fixed position on the stator but go on shifting their positions around the stator. For this reason, it is called a rotating field.

What is slip speed?

The speed at which the induction motor work is known as the slip speed. The difference between the synchronous speed and the actual speed of the rotor is known as the slip speed. In other words, the slip speed shows the relative speed of the rotor concerning the speed of the field.

What is resultant flux?

The magnetic field produced by the stator winding is denoted as Φs. The magnetic flux produced by the rotor winding is Φf. The resultant magnetic field is. [8.16] When the torque applied to the shaft equals zero, the magnetic fields of the rotor and the stator become perfectly aligned.