Multi-layer quasi three-dimensional equivalent model of axial-flux permanent magnet synchronous machine

Axial-flux permanent magnet synchronous machine (AFPMSM) enjoys the merits of high torque density and efficiency, which make it one good candidate in direct-drive application. The AFPMSM is usually analyzed based on three-dimensional finite element method (3D FEM) due to its magnetic field distribution. However, 3D FEM suffers large amount calculation, time-consuming not suitable for optimization AFPMSM. Addressing this issue, a multi-layer quasi equivalent model investigated paper, could take end leakage into consideration. Firstly, with single stator rotor derived details, including processes conversions structure dimensions, motion conditions electromagnetic parameters. Then, consider influence performance, correction factor introduced model. Finally, proposed verified by an under different It demonstrates that errors flux linkage average obtained are only around 2% although parameters varied. Besides, computation time case 6 min, much less than FEM, 1.8 h, same conditions. Thus, be used optimize saved compared FEM.