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The following page content corresponds to the products marketed in Japan.
If you do not live in Japan, please

Single Phase AC Motor

Single Phase AC motors are a type of induction motor which as the name implies operate on one phase. 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 types of motor define the method used to achieve the phase splitting.

The principle of operation for these motors is the same as the 3 phase induction motor in that, it consists of a stator winding(s) inducing currents in a 'caged rotor'.

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:
Applications include power tools, washing machines clothes dryers, vacuum cleaners, fans, food processors.

Suggested Renesas MCU Solutions

Control
Methods
MCU Requirements Suggested Renesas MCU Solutions
78K0S/
Kx1+
78K0/
Kx2
78K0R/
Kx3
R8C
Family
RL78/
G13
RL78/
G14
Single Phase AC
Motor
TRIAC Control GPIO, Timers, Interrupts, A/D Channels ○ ○ ○ ○ ○ ○
PWM Chopper
Control
PWM Channel, Timers, A/D Channels ○ ○ ○ ○ ○ ○

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