Single-Phase Induction Motors
The single-phase engine operates under the same principle as the polyphase electric motor, except that the rotating magnetic field effect generated by the stator will not exist until running rpm is reached. Since no beginning torque is obtainable, a design mechanism is included to begin the motor. They are the various designations:

Torque-Speed Curves of Different Single-Phase Induction Motors

Shaded-pole: Have only one main winding no begin winding. This configuration causes a change of the used magnetic field in relationship to the rotor, creating stating torque. Applications include supporters and small appliances.

Split-Phase (induction start electric motor)
Has two sets of stator windings. The “start” windings sit 90 degrees to the “run” windings and shift the magnetic field of the stator, inducing beginning torque. Applications include small grinders, small enthusiasts, and blowers.

Capacitor-Start
The most typical single-phase motor found in industrial applications. It is a modified split-stage engine with a capacitor in series with the start winding to supply a start boost. App include small conveyors, large blowers, pumps, and direct-drives.

Permanent-Split-Capacitor (PSC)
Uses identical main and auxiliary windings with a capacitor to provide starting torque. They will be the most Single Phase Induction Motor china reliable single-phase engine because no centrifugal starting switch is required. Applications include fans and pumps in HVAC and refrigeration industries.