Analytical Field Prediction in Modular Stator of Permanent Magnet Synchronous Machines Considering Finite Soft-Magnetic Material Permeability

This paper presents a harmonic analytical method for modular permanent-magnet (PM) machines. By using the complex Fourier separation method, the magnetic field in all parts of machine regions is solved from system equations through the application of boundary conditions with take into account the permeability of iron parts. Three types of concentrated winding have been used, namely, single layer, double layer same phase and double layer between phase. Additionally, the performance results of these configurations are also compared. Finally, to validate the proposed analytical method, the results are verified with the finite-element method (FEM). Thus, the validation shows good results for the proposed model.