Single-Phase Induction Motors
The single-phase electric motor operates under the same principle as the polyphase engine, except that the Single Phase Induction Motor china rotating magnetic field effect generated 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 no begin winding. This configuration causes a change of the applied magnetic field in romantic relationship to the rotor, creating stating torque. Applications consist of supporters and small appliances.
Split-Phase (induction start motor)
Has two sets of stator windings. The “start” windings are positioned 90 degrees to the “run” windings and change the magnetic field of the stator, inducing beginning torque. Applications include small grinders, small followers, and blowers.
Capacitor-Start
The most common single-phase motor found in industrial applications. It is a modified split-stage motor with a capacitor in series with the start winding to supply a start boost. Software include small conveyors, huge blowers, pumps, and direct-drives.
Permanent-Split-Capacitor (PSC)
Uses identical primary and auxiliary windings with a capacitor to supply starting torque. They will be the most reliable single-phase engine because no centrifugal starting switch is required. Applications include fans and pumps in HVAC and refrigeration industries.