The AC Induction Motor (ACIM), sometimes called a squirrel cage motor, is among the most popular motors used in consumer and industrial applications. Induction machines are by significantly the largest group of all industrial electrical machines, converting approximately 70-80% of all electricity into mechanical form. The employ a robust rotor construction, making them suitable for 
high-speed applications. With correct design, they have good Ac Induction Motora china overloading and field weakening features.
The ACIM is comprised of a straightforward 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