The Magnetomotive Force of 2-Layer Windings or Rotating Machines

The development of general equations for the magnetomotive force of 2-layer windings depends upon the summation of the magnetomotive forces of the individual conductors in the slots. By the use of unique methods of summation, it is possible to derive equations for the winding factors of both integral and fractional slot windings without resorting to tabular or vector diagrams. The equations are developed for any phase angle and may be applied to 2-phase, 3-phase, 60-and 120-degree phase belts, or any other that represents a usable winding.