The AC Induction Motor (ACIM), sometimes called a squirrel cage motor, is 
one of the most popular motors used in consumer and commercial applications. Induction devices are by Ac Induction Motora china considerably the largest group of all commercial electrical machines, converting around 70-80% of all electrical energy 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 made up of a 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 doesn’t have any moving contacts, which eliminates sparking