Design of a Novel Axial Flux Permanent Magnet Assisted Synchronous Reluctance Motor

摘要

Due to higher power and torque densities, and ease of construction, axial flux permanent magnet (AFPM) motors are used in various applications. Majority of the AFPMs use surface mounted permanent magnets for torque generation, which results lower saliency as well as lower reluctance torque. As a result, these motors provide narrow flux weakening range. Axial flux permanent magnet assisted synchronous reluctance motor (AFPMa-SynRM) is proposed in this paper which can provide higher reluctance torque in addition to the magnet torque with lesser amount of magnet material. A Taguchi method based approach has been conducted to optimize the torque per volume while minimizing the torque ripple of AFPMa-SynRM. Electromagnetic and flux weakening performances of AFPMa-SynRM have been compared with the benchmark axial flux interior permanent magnet (AFIPM) motor. This study indicates that AFPMa-SynRM can be a potential cost-effective solution with a better performance.