The principle of three phase asynchronous motor

Creates a to synchronous speed n1 along the circle space inside the stator and rotor rotate clockwise rotating magnetic field.Due to the rotating magnetic field in the n1 speed rotation,the rotor conductor is still at the beginning of the rotor conductor will cut the stator rotating magnetic field and produce inductive electromotive force (judge the direction of the induced electromotive force with the right-hand rule) due to the rotor conductors sub is short circuit loop at each end,and  the effect of induction electromotive force,the rotor conductors will occur basic consistent with the direction of induction electromotive force induced current.Rotor current carrying conductor in the role of the stator magnetic field by electromagnetic force (force in the direction of the left small electric motors hand rule determine) electromagnetic force on electromagnetic

torque,rotor shaft drive Motor vehicle rotor spinning in the direction of the rotating magnetic field.By analyzing the working principle of the motor can be summarized as follows:

when the three-phase stator winding of the motor (the difference between a 120-degree Angle) to the balanced three-phase alternating current (ac),will happen in a rotating magnetic field,the rotating magnetic field cutting rotor winding,which occur in the rotor winding induced current (rotor winding is closed-cycle) rotor of current-carrying conductor in the stator rotating magnetic field under the action of electromagnetic force will occur,as to form the electromagnetic torque on the motor

shaft,motor rotation,and the motor rotation direction is the same as the rotating magnetic field

direction.