(1) When the three-phase asynchronous motor is connected to the three-phase AC power supply (each with a difference of 120 degrees in electrical angle), the three-phase magnetomotive force (stator rotating magnetomotive force) generated by the three-phase symmetrical current flowing through the three-phase stator windings generates The rotating magnetic field rotates clockwise along the inner circular space of the stator and the rotor at a synchronous speed n0.

(2) The rotating magnetic field and the rotor conductor have a relative cutting motion. According to the principle of electromagnetic induction, the rotor conductor (the rotor winding is a closed path) generates an induced electromotive force and an induced current (the direction of the induced electromotive force is determined by the right-hand rule).

(3) According to the law of electromagnetic force, under the action of the induced electromotive force, an induced current that is basically consistent with the direction of the induced electromotive force will be generated in the rotor conductor. The current-carrying rotor conductor is subjected to electromagnetic force in the magnetic field generated by the stator (the direction of the force is determined by the left-hand rule). The electromagnetic force forms an electromagnetic torque on the motor rotor shaft, which drives the motor rotor to rotate in the direction of the rotating magnetic field. When there is a mechanical load on the shaft, the mechanical energy is output to the outside. Since the magnetic flux of the part without the short-circuit ring is ahead of the magnetic flux of the part with the short-circuit ring, the motor rotates in the same direction as the rotating magnetic field.

YEJ2 SERIES ELECTROMAGNETIC BRAKE THREE-PHASE ASYNCHRONOUS MOTOR
This series of motors are equipped with an electromagnetic brake on the non-drag shaft end of the motor. When the motor loses power, the brake disc of the electromagnetic brake is automatically pressed against the rear cover of the motor to generate friction braking torque, which causes the motor to stop and brake without load. The random seat number of the moving time ranges from small to large, 0.15-0.45S. This series of motors are widely used in mechanical processing machine tools, conveying machinery and packaging, woodworking, food, chemical, textile, construction, shops, rolling doors and other machinery as drives.