The ac synchronous motor factory tells you the principle and structure of the synchronous motor
speed
The asynchronous motor is a stator that sends an alternating current to generate a rotating magnetic field, and the rotor is induced to generate a magnetic field. In this way, the two magnetic fields cause the rotor to rotate with the rotating magnetic field of the stator. The rotor is slower than the stator rotating magnetic field and has a turning difference. Deviation is called an asynchronous machine.
The synchronous motor rotor is artificially added to the DC to form a constant magnetic field, so that the rotor turns to synchronization along with the stator rotating magnetic field, and is called a synchronous motor.
Structure and Principle
The stator windings of synchronous motors and asynchronous motors are the same, and the main difference lies in the structure of the rotor.
The synchronous motor has a DC excitation winding on the rotor, so it is necessary to add an external excitation power supply to introduce current through the sliding ring;
The rotor of the asynchronous motor is a short-circuit winding, which generates current by electromagnetic induction.
Asynchronous motors are simple, low cost, easy to install, use, and maintain. Therefore, they are widely used. The disadvantages are low efficiency and low power factor. The high efficiency of synchronous Motors is a capacitive load, which can improve the power factor of the power grid. Multipurpose mines are not available.
