Single-Phase Induction Motors
The single-phase engine operates beneath 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 beginning torque is available, a design mechanism is included to start the motor. These are the various Single Phase Induction Motor china designations:
Torque-Speed Curves of Different Single-Phase Induction Motors
Shaded-pole: Have only 1 main winding no begin winding. This configuration causes a change of the applied magnetic field in romantic relationship to the rotor, creating stating torque. Applications consist of enthusiasts and small appliances.
Split-Phase (induction start motor)
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.
The most common single-phase motor found in industrial applications. It is a modified split-stage electric motor with a capacitor in series with the start winding to supply a start boost. App include small conveyors, large blowers, pumps, and direct-drives.
Uses identical main and auxiliary windings with a capacitor to supply starting torque. They are the most reliable single-phase electric motor because no centrifugal beginning switch is required. Applications include followers and pumps in HVAC and refrigeration industries.