1. AC synchronous motor: that is, the rotor is composed of permanent magnet data, so after rolling, with the change of the stator rotation magnetic field of the motor, the rotor also changes the speed of the response frequency, and the rotor speed = stator speed, so it is called "synchronization".
2. AC asynchronous motor: The rotor is composed of an induction coil and data. After rolling, the stator produces a rotating magnetic field, the magnetic field cuts the induction coil of the rotor, the rotor coil produces an induced current, so that the rotor produces an induced magnetic field, and the induced magnetic field follows the change of the rotating magnetic field of the stator, but the magnetic field change of the rotor is permanently smaller than the change of the stator, once it is equal to the magnetic field that has not changed cuts the induction coil of the rotor, there is no induced current in the rotor coil, the rotor magnetic field disappears, and the rotor stalls and the stator produces a speed difference and the sense of response current again. Therefore, in the communication asynchronous motor, there is a key parameter is the slip rate, which is the ratio of the speed difference between the rotor and the stator.
3. The corresponding AC synchronous and asynchronous motors have corresponding synchronous inverters and asynchronous inverters, and the servo motors also have AC synchronous servos and AC asynchronous servos.
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