Three phase ac induction motors are widely used in industrial and commercial applications. An induction motor also known as an asynchronous motor is a commonly used ac electric motor. The rotor winding terminals are connected to three slip rings which turn with the rotor. The motor which works on the principle of electromagnetic induction is known as the induction motor. Today we are going to made available a powerpoint presentation file for all. If the speeds become equal, there would be no such relative speed, so no emf induced in the rotor, and no current would be flowing, and therefore no torque would be generated. They work on the principle of electromagnetic induction.
Windingrotor arrangements for 3 phase induction machine three phase slip ring induction motor. Working principle of an induction motor circuit globe. An electrical motor is a device that has brought about one of the biggest advancements in the fields of engineering and technology ever since the invention. 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. They run at a constant speed from noload to the full load. A 3 phase induction motor has two main parts i stator and ii rotor. Download 3 phase induction motor powerpoint presentation download and read online.
Thus from the working principle of three phase induction motor, it may be observed that the rotor speed should not reach the synchronous speed produced by the stator. A wound rotor or slip ring motor has a 3phase winding, similar to the stator winding. Three phase induction motor working principle in tamil. These are of two types, squirrel cage and slip ring motors.
These motors are selfstarting and use no capacitor, start winding, centrifugal switch or other starting device. Due to the similarity in the working principle of the transformer, it is also known as the rotating transformer. As previously, we have covered a lot of important topics. The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. Therefore, these motors are frequently used in industry. Download 3 phase induction motor powerpoint presentation. The topic lies under the basic electrical and electronics engineering course that. Induction motor basics, single phase and three phase. Watch this video to understand the working principals of the three phase induction motors. The rotor is separated from the stator by a small airgap which ranges from 0.
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