Different models of electric motors have different operating principles and processes. Only by learning to distinguish can they be better applied, and it is also helpful in solving equipment failures. Here is a single-phase AC motor, and how does it rotate?
Due to the design of a single-phase AC motor with a winding and a squirrel cage rotor, relying solely on single-phase electricity cannot generate a rotating magnetic field. To enable a single-phase motor to rotate automatically, it is necessary to add a starting winding to the stator and ensure that the starting winding differs from the main winding by 90 degrees in space.
Not only that, but also a suitable capacitor should be connected in series to the starting winding, making it approximately 90 degrees different from the current of the main winding in phase, which will generate a rotating magnetic field in space. Through its function, the rotor of the electric motor can achieve the goal of automatic starting.