The AC Induction Engine (ACIM), sometimes called a squirrel cage motor, is among the most popular motors found in consumer and commercial applications. Induction devices are by much the largest group of all commercial electrical machines, converting approximately 70-80% of all electrical energy into mechanical type. The have a very robust rotor construction, making them suitable for high-speed applications. With appropriate design, they have great overloading and field weakening features.
The ACIM is made up of a Ac Induction Motor 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