The AC Induction Motor (ACIM), sometimes called a Ac Induction Motora china squirrel cage motor, is among the most popular motors used in consumer and commercial applications. Induction devices are by far the biggest group of all industrial electrical machines, converting around 70-80% of all electrical energy into mechanical type. The have a very robust rotor construction, which makes them suitable for high-speed applications. With appropriate design, they have good overloading and field weakening features.

The ACIM is comprised of a straightforward cage-like rotor and a stator containing three windings

The changing field made by the AC line current in the stator induces a current in the rotor which interacts with the field and causes the rotor to rotate

The rotor doesn't have any moving contacts, which eliminates sparking