Section 15.1: Operation of a Three-Phase Induction Motor
Induction motors are, by far, the most widely used motors
AC windings are mounted on the (rotating) rotor
AC windings are mounted on the (stationary) stator resulting in three-phase AC stator voltages and currents¾which, like a three-phase synchronous machine, produces a rotating field
There are two basic rotor designs, namely, (squirrel) cage (extremely rugged) which is the most common design, and wound-rotor, which is a more versatile but more expensive and fragile design¾which are illustrated in the next two slides