Single-Phase Induction Motors
The single-phase motor operates beneath 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 available, 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 and no start winding. This configuration causes a shift of the used magnetic field in romantic relationship to the rotor, creating stating torque. Applications Single Phase Induction Motor china include enthusiasts and small appliances.
Split-Phase (induction start electric motor)
Has two units of stator windings. The “start” windings sit 90 degrees to the “run” windings and shift the magnetic field of the stator, inducing beginning torque. Applications include small grinders, small enthusiasts, and blowers.
The most common single-phase motor used in industrial applications. It is a altered split-phase engine with a capacitor in series with the start winding to supply a start boost. Program include small conveyors, huge blowers, pumps, and direct-drives.
Uses identical primary and auxiliary windings with a capacitor to provide starting torque. They are the most reliable single-phase engine because no centrifugal beginning switch is necessary. Applications include fans and pumps in HVAC and refrigeration industries.