Three-Phase Induction Motors

The three-phase induction motor, also called an asynchronous motor, is the most commonly used type of motor in industrial applications. In particular, the squir-rel-cage design is the most widely used electric motor in industrial applications.

Principles of Operation

The electrical section of the three-phase induction motor consists of the fixed stator or frame, a three-phase winding supplied from the three-phase mainsand a turning rotor. There is no electrical connection between the stator and the rotor. The currents in the rotor are induced via the air
gap from the stator side. Stator and rotor are made of highly magnetizable core sheet providing low eddy current and hysteresis losses.