Single Phase AC Motor

In single phase induction motors, a single phase supply voltage is 'split' into two phase currents to create a rotating magnetic field in order to start the rotation of the rotor. The principle of operation for these motors is the same as the 3 phase induction motor in that, they consist of a stator winding(s) inducing currents in a 'caged rotor'. The types of motor define the method used to achieve the phase splitting. Types of single phase AC induction motor are: Split Phase Capacitor Shaded Pole Repulsion

The capacitor and Shaded pole tend to be the most common. A capacitor run motor consists of a capacitor connected between a main and auxiliary winding to provide phase shift between these windings and hence a rotating flux. A shaded pole motor consists of a stator winding with the pole of the stator slotted to receive a 'shading ring'. The resultant phase shift between stator and shaded pole set up a rotating flux in the rotor. Applications include power tools, washing machines clothes dryers, vacuum cleaners, fans, food processors.

See detailed circuit diagrams below and device recommendations.

Motor Control Circuit