Single-Phase Induction Motors
The single-phase motor operates under the same principle as the polyphase electric motor, except that the rotating magnetic field effect generated by the stator does not exist until running rpm is Single Phase Induction Motor china reached. Since no starting torque is available, 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 start winding. This configuration causes a change of the used magnetic field in relationship to the rotor, creating stating torque. Applications consist of enthusiasts and small appliances.
Split-Phase (induction start electric motor)
Has two pieces of stator windings. The “start” 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 followers, and blowers.
The most common single-phase motor found in industrial applications. It really is a modified split-stage electric motor with a capacitor in series with the start winding to provide a start boost. App include small conveyors, large blowers, pumps, and direct-drives.
Uses identical primary and auxiliary windings with a capacitor to supply starting torque. They are the most reliable single-phase motor because no centrifugal starting switch is required. Applications include followers and pumps in HVAC and refrigeration industries.