Why does the AC motor turn?Do I feel that the coil is not in a steady state?
Because the child is short circuit loop ends conductor short circuit, in the role of the induced EMF, will produce the rotor conductor with Induction EMF direction basic consistent induced current. The rotor load by electromagnetic force in the stator magnetic conductor (the role of the direction of the force with the left hand dingze judge). The electromagnetic force electromagnetic torque the rotor shaft to drive the rotor to rotate along the rotating direction of the magnetic field.
When three to three alternating current in the stator winding through the symmetry, it produced a synchronous speed n1 along the stator and rotor roundfor space in a clockwise rotation of the rotating magnetic field. Due to the rotation speed of rotating magnetic field to N1, the beginning of the rotor conductors is static, so the rotor conductor will cut the stator rotation the magnetic field induced electromotive force (EMF direction dingze judge with the right hand).
Through the above analysis can be summed up as follows: when the working principle of the motor stator winding of the motor (three of the difference between the 120 electrical degrees), into three alternating current, will produce a rotating magnetic field, the rotating magnetic field cutting rotor windings, thus the induced current in the rotor winding (the rotor winding is a closed path). The rotor conductor carrier will produce electromagnetic force in the stator rotating magnetic field, so as to form the electromagnetic torque of the rotating shaft of the motor and drive the rotation of the motor and the motor rotation direction and rotation direction of the magnetic field.
