Single-Phase Induction Motors
The single-phase motor operates under the same principle as the polyphase engine, except that the rotating magnetic field effect generated by the stator does not exist until running rpm is reached. Since no starting torque is obtainable, a design system is included to begin 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 applied magnetic field in relationship to the rotor, creating stating torque. Applications consist of supporters and small appliances.
Split-Phase (induction start motor)
Has two models of stator windings. The “start” chain sprocket windings are positioned 90 degrees to the “run” windings and change the magnetic field of the stator, inducing starting torque. Applications include little grinders, small supporters, and blowers.
The most common single-phase motor used in industrial applications. It is a altered split-stage electric motor with a capacitor in series with the beginning winding to supply a start boost. Software include small conveyors, large blowers, pumps, and direct-drives.
Uses identical main and auxiliary windings with a capacitor to provide starting torque. They will be the most reliable single-phase motor because no centrifugal beginning switch is necessary. Applications include enthusiasts and pumps in HVAC and refrigeration industries.