Design and Modeling of a Slotless and Homopolar Axial-Field Synchronous Machine for a Flywheel Accumulator
Résumé
A new axial-field synchronous machine designed for
a flywheel accumulator is presented herein. The armature and
field windings, fixed in the air gap, are made with double-face
printed circuits. A specific armature layout provides a sine-dis-
tributed magnetomotive force and solves the problem of crossing
the ends of the winding. A two-dimensional semi-analytical model
at the mean radius, using surfacic permeances, is then developed.
Then, inductances, torque, and eddy-current losses are calculated
using this model and compared with experimental results.