Study the Influence of Air-gap Variation on Axial Forces in Axial Flux Permanent Magnet Motor Using 3D-FEM

This paper describes the effect of air-gap variation on performance of a 28 pole axial flux permanent magnet motor (AFPM) with concentrated stator winding. The AFPM is modeled using three-dimensional finite-element method. This model includes all geometrical and physical characteristics of the machine components.