The AC Induction Engine (ACIM), sometimes called a squirrel cage motor, is among the most popular motors found in consumer and commercial applications. Induction machines are by significantly the largest group of all industrial electrical machines, converting around 70-80% of all electricity into mechanical form. The have a very robust rotor construction, which makes them suitable for high-speed applications. With proper design, they have good overloading and field weakening characteristics.

The ACIM is made up of a Ac Induction Motora china simple 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