Single-Phase Induction Motors
The single-phase engine operates beneath the same principle as the polyphase engine, except that the rotating magnetic field effect produced by the stator does not exist until running rpm is reached. Since no starting torque is offered, a design mechanism is included to start the motor. They are the various Single Phase Induction Motor china designations:

Torque-Speed Curves of Different Single-Phase Induction Motors

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

Split-Phase (induction start engine)
Has two models of stator windings. The “start” windings sit 90 degrees to the “run” windings and change the magnetic field of the stator, inducing beginning torque. Applications include little grinders, small supporters, and blowers.

Capacitor-Start
The most common single-phase motor found in industrial applications. It is a altered split-phase electric motor with a capacitor in series with the start winding to supply a start boost. Program include small conveyors, huge blowers, pumps, and direct-drives.

Permanent-Split-Capacitor (PSC)
Uses identical primary and auxiliary windings with a capacitor to supply starting torque. They are the most reliable single-phase engine because no centrifugal beginning switch is necessary. Applications include supporters and pumps in HVAC and refrigeration industries.