The Working Principle of Ac Motor

Principle of AC motor：

Description of single-phase capacitive motors: Single-phase motors have two windings, the start winding and the running winding. The two windings are spatially different by 90 degrees. A large-capacity capacitor is connected in series on the starting winding. When the running winding and the starting winding pass the single-phase alternating current, the current in the starting winding is advanced by 90 degrees from the current of the running winding due to the action of the capacitor, reaching the maximum first. value. Two identical pulsed magnetic fields are formed in time and space, so that a rotating magnetic field is generated in the air gap between the stator and the rotor. Under the action of the rotating magnetic field, an induced current is generated in the rotor of the motor, and the current interacts with the rotating magnetic field. The electromagnetic field torque causes the motor to rotate.