What is the operating principle of a three-phase induction motor?

The stator of an induction motor is the same as the stator of a three-phase generator. Three stator windings are connected to a three-phase network. Each winding creates an alternating magnetic field that changes at a frequency of 50Hz. The lines of force of these fields are directed at an angle of 120 ° to each other, and the field changes do not occur simultaneously. When a square conductor frame is placed in a rotating magnetic field, the changing magnetic field creates an induction current in it. Ampere forces act on this current from the side of the rotating magnetic field and rotate the frame in the direction of the field rotation.

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