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High Voltage Squirrel Cage Induction Electric Motors
Sep 15, 2017

High Voltage Squirrel Cage Induction electric Motors

When a three-phase three-phase alternating current is passed into the three-phase stator winding, a rotating magnetic field with a synchronous speed of N1 along the stator and the inner circle space of the rotor is generated in a clockwise direction. As the rotating magnetic field rotates at the speed of N1, the rotor conductor is stationary at the beginning, so the rotor conductor will generate the induced electromotive force by cutting the rotating magnetic field of the stator (the direction of the induced electromotive force is determined by the right hand rule). As the rotor conductor is shorted at the two ends and the ring is short circuited, the induced current in the rotor conductor will be basically consistent with the direction of the induced electromotive force under the action of the induced electromotive force. The current carrying conductor of the rotor is subjected to electromagnetic force in the stator magnetic field (the direction of force is determined by the left hand rule). The electromagnetic force generates an electromagnetic torque on the rotor shaft, which drives the rotor to rotate in the direction of the rotating magnetic field. Through the above analysis can be summed up as follows: when the motor working principle of the three-phase motor stator winding (the difference between the 120 electrical degrees), pass into the three-phase alternating current, will produce a rotating magnetic field, the rotating magnetic field cutting rotor windings, thus the induced current in the rotor winding (rotor winding, the rotor is a closed path) the current carrying conductor will produce electromagnetic force in the stator rotating magnetic field, so as to form the electromagnetic torque of the rotating shaft of the motor and drive the rotation of the motor and the motor rotation direction and rotation direction of the same magnetic field

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