Research on a Novel High-Torque-Density Axial–Radial-Flux Permanent-Magnet Motor with Annular Winding for an Elevator-Traction Machine

The traditional radial flux PMSM and axial have an effective air gap on only one side, between the stator rotor, generates electromagnetic torque. There are defects in magnetic-field utilization, it is difficult to improve torque density. Therefore, this paper proposes axial–radial-flux permanent-magnet synchronous motor (ARF-PMSM), which combines with flux, be used elevator-traction machine-drive motor. characteristics of ARF-PMSM that core made a soft magnetic composite material winding annular. has three gaps, can achieve high density without increasing overall dimensions. In paper, mechanical structure operation mechanism introduced, its circuit analyzed by using equivalent method. other ARF-PMSM, surface-mounted PMSM, spoke-type compared finite element research results show proposed density, provides new design idea form high-torque-density for use machines.