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

Torque-Speed Curves of Different Single-Phase Induction Motors

Shaded-pole: Have only 1 main winding and no begin winding. This configuration causes a shift of the used magnetic field in relationship to the rotor, creating stating torque. Applications include enthusiasts and small appliances.

Split-Phase (induction start motor)
Has two models of stator windings. The “start” windings are positioned 90 degrees to the “run” windings and shift the magnetic field of the stator, inducing beginning torque. Applications include little grinders, small fans, and blowers.

Capacitor-Start
The most typical single-phase motor used in industrial applications. It images?q=tbn:ANd9GcQOQs8JqSAk1bbHqxGs0nbTkacrgARvf1i3oOji0YS0crb2L 0S4Areally is a altered split-stage engine with a capacitor in series with the start winding to provide 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 starting switch is required. Applications include followers and pumps in HVAC and refrigeration industries.