Modeling of axial flux PM machines

In modeling axial field machines, 3D FEM models are required in accurate computations. However, 3D FEM analysis is generally too time consuming in industrial use. In order to evaluate the performance of the axial flux machine rapidly, an analytical design program that uses quasi-3D computation is developed. In this paper the main features of the developed program are illustrated. Results, given by the program are verified with 2D and 3D finite element computations and measurements. According to the results, it is possible to evaluate the performance of the surface mounted axial flux PM machine with reasonable accuracy via an analytical model using quasi-3D computation.