The AC Induction Electric motor (ACIM), sometimes called a squirrel cage motor, is one of the most popular motors used in consumer and industrial applications. Induction machines are by much the largest group of all commercial electrical machines, converting approximately 70-80% of all electricity into mechanical type. The have a very robust rotor construction, which makes them ideal for high-speed applications. With proper design, they have good overloading and field weakening features.

The ACIM is made up 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 Ac Induction Motora china causes the rotor to rotate

The rotor does not have any moving contacts, which eliminates sparking