Technological Innovation

AC Motors

AC motors


• Induction Motor: So called because voltage is induced in the rotor (thus no need for brushes), but for this to happen,
the rotor must rotate at a lower speed than the magnetic field to allow for the existance of an induced voltage.

Therefore a new term is needed to describe the induction motor: the slip.


• Synchronous Motor: So called because rotor tries to line up with the rotating magnetic field in the stator. It has the

stator of an induction motor, and the rotor of a DC motor.