Single-Phase Induction Motors
The single-phase motor operates under the same principle as the polyphase electric motor, 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 system is included to start the motor. These are the various designations:

Torque-Speed Curves of Different Single-Phase Induction Motors

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

Split-Phase (induction start engine)
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 starting torque. Applications include small grinders, small fans, and blowers.

Capacitor-Start
The most typical single-phase motor found in industrial applications. It is a altered split-stage engine with a capacitor in series with the beginning winding to provide 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 are the most reliable single-phase electric motor because no centrifugal starting switch is required. Applications include enthusiasts and pumps in HVAC and refrigeration industries.