Design of a Novel Six-Phase Outer Rotor Transverse Flux Reversal PM Motor for Distributed Aviation Propulsion System

Transverse flux permanent magnet motors (TFPMMs) are characterized by axial modularity, simple winding distribution, and good fault tolerance performance. These features make TFPMMs promising for aviation propulsion systems with high safety requirements. However, the large amount of rare earth permanent magnet (PM) materials used in conventional TFPMMs raises their manufacturing cost. In this paper, a novel six-phase outer rotor transverse flux reversal permanent magnet machine (OR-TFRPMM) is designed. The proposed 6-phase OR-TFRPMM has no permanent magnets on the rotor, and this design can improve the rotor's reliability. Compared with the permanent magnets on the surface of the rotor, the axially magnetized permanent magnets inside the stator will reduce consumption by 55.75%. Besides, OR-TFRPMM adopts a 6-phase coil without coil coupling, which is suitable for fault-tolerant aviation propulsion systems. To obtain the motor's magnetic field distribution and analyze the OR-TFRPMM's performance, a 3D finite element analysis (FEA) of the machine is performed in this paper. The simulation results show that the motor proposed in this paper performs well. Finally, this paper introduces the fault-tolerance features of OR-TFRPMM and simulates its fault-tolerance capability. © 2023 IEEE.