A parametric magnetic network model for axial flux permanent magnet machine with coreless stator

This paper presents a universal parametric magnetic network model for coreless stator axial flux permanent magnet (AFPM) machines. To account for three-dimensional field effects in an AFPM machine, a multilayer modeling method is used to estimate both the axial and tangential magnetic field component in the air gap. A magnetic network model of magnets are used to correct the distribution of air gap flux density. The flux leakage on rotor and stator edges are modeled by introducing correction factors for flux density along the radial direction. Furthermore, these calculations are compared to those from finite-element analysis with good agreement.