The AC Ac Induction Motora china Induction Engine (ACIM), sometimes called a squirrel cage motor, is among the most popular motors found in consumer and commercial applications. Induction machines are by much the largest group of all industrial electrical machines, converting approximately 70-80% of all electrical energy into mechanical form. The have a very robust rotor construction, making them suitable for high-speed applications. With proper design, they have good 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 does not have any moving contacts, which eliminates sparking