@

초록

Axial flux permanent magnet (AFPM) motors are gaining significant attention for future sustainable energy solutions due to their high torque density and compact form factor. To design a high-torque density AFPM motor, an accurate analytical model is crucial for developing novel designs or optimizing motor performance. In this study, an integrated multi-physics modeling framework is proposed for coreless AFPM motors. In the proposed modeling, an electromagnetic model based on Maxwell's equations and an image method is employed for accurate electromagnetic analysis, while a lumped-parameter thermal network model estimates coil temperature efficiently. Furthermore, two novel design features-an overhang rotor structure and a carbon fiber-reinforced plastic stator-are introduced to enhance torque density and thermal performance. An AFPM motor prototype incorporating these features was designed using the proposed framework and fabricated for validation. Experimental results confirmed the high predictive accuracy of our modeling framework. Notably, the prototype achieved a 29% improvement in torque density compared to a conventional design, highlighting the potential of the proposed approach to advance the development of high-performance electric motors for green technologies.

키워드