The principle of three phase asynchronous motor

When to three in the stator mini electric motor winding through a symmetric three alternating current (ac),creates a to synchronous speed n1 along the circle space inside the stator and rotor rotate clockwise rotating magnetic field.Due to a rotating magnetic field in the n1 speed rotation,the rotor conductor is still at the beginning,so the rotor conductor will cut the stator rotating magnetic field and induced electromotive force (judge the direction of the induced
electromotive force with the right-hand rule).Because the guide was short circuit ring short meet on both ends of the conductor,in under the action of induction electromotive force,the rotor conductors will be wholesalemotor.blogspot.com 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 (judge force direction with the left www.dongfeng-motor.com hand rule).

Electromagnetic force to the rotor shaft of the electromagnetic torque,driving 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 motor stator winding Angle of 120 degrees (the difference between electric),bubbled into three alternating current (ac),will produce a rotating magnetic field,the rotating magnetic field cutting rotor winding,thus produce induced current in the rotor winding is closed (rotor winding path),the rotor of current-carrying conductor under the effect of the stator rotating magnetic field will produce electromagnetic force,as to form the electromagnetic torque on the motor shaft,motor rotation,and the motor rotation direction gasoline generator is the same as the rotating magnetic field direction.