Single-Phase Induction Motors
The single-phase electric motor operates beneath the same principle as the polyphase electric motor, except that the rotating magnetic field effect generated by the stator will not exist until running rpm is reached. Since no beginning torque is offered, a design system is included to start the motor. They are the Single Phase Induction Motor various designations:
Torque-Speed Curves of Different Single-Phase Induction Motors
Shaded-pole: Have only one main winding no start winding. This configuration causes a shift of the used magnetic field in romantic relationship to the rotor, creating stating torque. Applications include supporters and small appliances.
Split-Phase (induction start electric 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 starting torque. Applications include little grinders, small enthusiasts, and blowers.
Capacitor-Start
The most common single-phase motor used in industrial applications. It is a altered split-stage electric motor with a capacitor in series with the beginning 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 are the most reliable single-phase motor because no centrifugal beginning switch is required. Applications include enthusiasts and pumps in HVAC and refrigeration industries.