AC motor is a simple and cost-effective motor. This kind of motor is ideal for industrial machines, food processors, conveyors etc.
There are two main types of AC motors:
Three-phase motor: the three phase of the motor are fixed to the stator with 120 degrees angle in relation to each other. The rotor of the motor is a shaft with a magnet. The current the phase winding develops an electromagnetic field, together with the angle between the phases it creates the rotary movement on the rotor magnet.
One phase motor: More common when there is no three-phase power supply. In this motor, in order to accelerate the rotor a capacitor is being used instead of the third phase.