Single-Phase Induction Motors
The single-phase engine operates under the same principle as the polyphase motor, except that the rotating magnetic field effect produced by the stator does not exist until running rpm is reached. Since no beginning torque is obtainable, a design system is included to start the motor. They are the various designations:
Torque-Speed Curves of chain sprocket Different Single-Phase Induction Motors
Shaded-pole: Have only 1 main winding and no begin winding. This configuration causes a change of the used magnetic field in relationship to the rotor, creating stating torque. Applications include supporters and small appliances.
Split-Phase (induction start engine)
Has two pieces of stator windings. The “start” windings are positioned 90 degrees to the “run” windings and shift the magnetic field of the stator, inducing starting torque. Applications include small grinders, small fans, and blowers.
The most common single-phase motor found in industrial applications. It really is a modified split-phase electric 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 provide starting torque. They are the most reliable single-phase motor because no centrifugal beginning switch is necessary. Applications include fans and pumps in HVAC and refrigeration industries.