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 produced by the Single Phase Induction Motor china 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 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 include fans and small appliances.
Split-Phase (induction start motor)
Has two sets 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 small grinders, small fans, and blowers.
The most typical single-phase motor found in industrial applications. It is a modified split-stage motor with a capacitor in series with the start winding to provide a start boost. Application 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 supporters and pumps in HVAC and refrigeration industries.