The AC Induction Engine (ACIM), sometimes called a squirrel cage motor, is among the most popular motors used in consumer and industrial applications. Induction devices are by significantly the biggest group of all industrial electrical machines, converting approximately 70-80% of all electricity into mechanical type. The have a very robust rotor construction, making them ideal for high-speed applications. With proper design, they have great overloading and field weakening characteristics.

The ACIM is comprised of a Ac Induction Motora china simple cage-like rotor and a stator containing three windings

The changing field produced 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 does not have any moving contacts, which eliminates sparking