The AC Induction Engine (ACIM), sometimes called a squirrel cage motor, is among the most popular motors found in consumer and industrial applications. Induction machines are by considerably the biggest group of all commercial Ac Induction Motor electrical machines, converting approximately 70-80% of all electrical energy into mechanical type. The employ a robust rotor construction, which makes them ideal for high-speed applications. With correct design, they have great 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