Asynchronous Motor

- Aug 07, 2020-

Induction motor is also called "asynchronous motor", that is, the rotor placed in the rotating magnetic field, under the action of the rotating magnetic field, to obtain a rotating torque, thus the rotor rotation.Induction motor appearance and internal structure, rotor is a rotating conductor, usually in the shape of a squirrel cage.The stator is the non-rotating part of the motor, whose main task is to generate a rotating magnetic field.Rotating magnetic fields are not achieved mechanically.Instead, alternating current is used in a pair of electromagnets to change the properties of their poles in a circular manner, thus acting as a rotating magnetic field.Unlike dc motors, this type of motor does not have a brush or collector ring. Depending on the type of alternating current used, there are single-phase motors and three-phase motors. Single-phase motors are used in washing machines, electric fans, etc.Three-phase motors are used as the plant's power equipment.The speed of the motor (rotor speed) is less than the speed of the rotating magnetic field, thus called asynchronous motor.It's basically the same as an induction motor.$\ text = {s (n_s - n)/n_s} $.S is slip rate, $N_s $is magnetic field speed, n is rotor speed.


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