Electric Machines

This set of pages forms the basis of a full set of class notes for a classical electic machines course. The materials recap the basics of rotational mechanics and electromagnetics before describing the fundamentals components AC and DC machines are made, and how AC windings produce a rotating magnetic field.

Basics of operation of classical wound field synchronous generators are described, including now excitation controls power factor, together with priciples of power-frequency relationships. Classical three-phase cage rotor induction machines are described under balanced operation with per phase equivalent circcuit models. The princples of open loop variable speed operation are also descrbed. The material on

The final section of the course covers smaller machines, including single phase induction motors under steady state operation and brief discussion of switched reluctance and permanent magnet motors.