Motors

Question 1

How does an induction motor work

Answer 1

An induction motor has no commutators or brushes which help with longevity. There are windings in the stator and in the rotor. The windings in the stator create a magnetic field which induces a current in the windings in the rotor.

The advantages:
Robust
Can be used at high speeds without causing damage
Runs of grid ac power
Efficient use of power

Disadvantages
Older motors where only suitable for constant speed applications.
Modern motors with variable frequency drive are not.