If you buy single phase induction motor, you need to know how a single-phase asynchronous motor works.
The working principle of a single-phase asynchronous motor:
The capacitor is separated from another alternating current with a phase difference of 90 degrees by a capacitive phase shift in the motor. The two phases of alternating current are sent into two or four groups of motor coil windings, and a rotating magnetic field is formed in the motor. The rotating magnetic field generates an induced current in the motor rotor. The magnetic field generated by the induced current is opposite to the rotating magnetic field. Push and pull by the rotating magnetic field into the rotating state.
Single-phase electricity can not generate a rotating magnetic field. To automatically rotate the single-phase electric function, a starting winding can be added to the stator. The starting winding and the main winding are separated by 90 degrees in space. The starting winding must be connected in a series. A suitable capacitor, The current of the main winding is approximately 90 degrees away from the phase, which is the so-called phase separation principle. In this way, two electric Circulations with a difference of 90 degrees in time into two windings with a difference of 90 degrees in space will generate a(two-phase) rotating magnetic field in space. Under this rotating magnetic field, the rotor can automatically start.
