Torque Density Comparison for Double-Sided Axial Flux Slotted TORUS and AFIR PM Motors

Double-sided axial flux PM motors (AFPM) are the most promising and widely used types. There are two topologies for slotted double-sided AFPM motors. Selecting an AFPM motors with high torque density is an important parameter in applications. So, comparison of torque density between different topologies of double- sided AFPM motors seems to be necessary. In this paper, the sizing equations of axial flux slotted one-stator-two-rotor (TORUS) and two-stator-one-rotor (AFIR) type PM motors is presented and comparison of the TORUS and AFIR topologies in terms of torque density is illustrated. Finally a high torque double-sided slotted AFPM motor is introduced in the paper.

Keywords:

axial flux PM motors (AFPM) , torque density