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 significantly the biggest group of all commercial electrical Ac Induction Motora china machines, converting approximately 70-80% of all electricity into mechanical form. The have a very robust rotor construction, which makes them suitable for high-speed applications. With correct design, they have great overloading and field weakening characteristics.
The ACIM is comprised of a 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