Single-Phase Induction Motors
The single-phase electric motor operates under the same principle as the polyphase motor, except that the rotating magnetic field effect generated by the stator does not exist until running rpm is reached. Since no starting torque is available, a chain sprocket 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 start winding. This configuration causes a shift of the used magnetic field in romantic relationship to the rotor, creating stating torque. Applications consist of supporters 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 starting torque. Applications include little grinders, small fans, and blowers.
The most common single-phase motor found in industrial applications. It really is a modified split-stage motor with a capacitor in series with the beginning winding to provide a start boost. Software include small conveyors, huge blowers, pumps, and direct-drives.
Uses identical main and auxiliary windings with a capacitor to supply starting torque. They will be the most reliable single-phase electric motor because no centrifugal beginning switch is required. Applications include enthusiasts and pumps in HVAC and refrigeration industries.