A very common three-phase asynchronous motor

Release Time：

2024-11-01

After the stator of a three-phase induction asynchronous motor is energized, a rotating magnetic field (magnet) is formed. Due to the induced electromotive force and short-circuit winding on the rotor, a rotating magnetic field is also generated. The rotating magnetic field of the rotor naturally follows the rotating magnetic field of the stator, and the two magnetic fields are relatively stationary. To apply force to the rotor, the rotor speed cannot be the same as the rotating magnetic field of the stator. Once it is the same, there will be no cutting electromotive force and no magnetic field.

Three phase induction asynchronous motors are widely used in industry. Fan motor, compressor motor, pump motor, car motor, etc

Advantages of three-phase induction asynchronous motor:

① Simple structure;

② Easy to manufacture;

③ Reliable operation;

④ Cheap price;

Disadvantages:

⑤ The power factor is always lagging;

⑥ The power factor is very low under light load;

⑦ Poor speed regulation performance.

Rotating motors can be simplified into two electromagnets, one stator and one rotor. The electromagnet of the stator rotates, and the rotor rotates accordingly, which is the electric motor. Obviously, there are conditions for the rotor to rotate. When we were children, we used to play with magnetic toys. Firstly, we had to be able to pull it, and secondly, we had to keep pace with the rotor.

DC motors, induction motors, and synchronous motors all need to find ways to produce two magnets, which can be real magnets or electromagnets.