How do AC motors keep in the same direction?
As for the synchronous motor, the principle of some trouble, is the basic rotor asynchronous motor into a rotor like DC motor. In the start into asynchronous start, start to rotor power into sync, oh, forgot to tell you that the speed of the motor rotating magnetic field than low speed asynchronous call motor, synchronous motor is the same, the speed of the rotating magnetic field is synchronous speed.
Because the working principle of AC motor stator is formed in a rotating magnetic field, then the rotor itself is a closed loop (induction motor) or a magnet (synchronous motor), the rotor rotation direction of magnetic field and steering only related to the rotation direction of magnetic field has not changed, turn to constant.
