Torque analysis of an axial flux permanent magnet synchronous machine by using analytical magnetic field calculation

This paper presents a torque analysis of an axial flux permanent magnet synchronous machine (AFPMSM) based on analytical analysis of magnetic field. The proposed method for torque analysis requires less computational time and is more flexible than finite element method (FEM). This is important advantage, especially for the early stages of the design process. Torque measurements on prototype AFPMSM confirm the validity of the torque analysis method. Index Terms--Electric machines, magnetic fields, permanent magnet machines, synchronous machines, torque.