Analysis of magnetic field of new structure permanent magnet synchronous motor

A new structure of NdFeB permanent magnet synchronous motor is put forward, the load free magnetic field of the motor is analyzed, and the isoline and the air gap density distribution curve have been drawn. The analysis results indicate that with the thin and highly performed magnetic pole attached outside the rotor, the leakage fluxes of this kind of motor are extremely minimized,thus achieving the goal of improving efficiency and saving energy. The object oriented program with Visual C ++ for the finite element has been worked out and it has laid the foundation of realizing CAD for permanent magnet synchronous motor.