Working principle of squirrel cage induction motor
The squirrel-cage three-phase asynchronous motor(English: 3-Phase Four Cage Induction Motor) refers to a three-phase scattered distributed winding on the stator of the motor. The rotor is a cage guide(because the guide is similar in shape to a cage, it is also called a cage asynchronous motor).
After the motor adds three-phase alternating current to the stator winding, a rotating magnetic field will be formed. The closed guide on the rotor will sense the potential and current due to cutting the magnetic force line of the stator magnetic field. The charged(current) conductor will move in the magnetic field, so that the motor rotor rotates. This is the working principle of the squirrel-cage three-phase asynchronous motor.
The advantages of this type of motor are simple structure, no winding on the rotor, low maintenance costs, and long service life. There are many occasions for use, almost in daily life, factory equipment, port terminals, oil fields and coal mines.
