基于NSGA-Ⅲ的eVTOL飞行器双三相电机分层优化设计

Layered Optimization Design of Dual Three-Phase Drive Motor for eVTOL Aircraft Based on NSGA-Ⅲ

摘要:

通过优化电动垂直起降（eVTOL）飞行器用电机的设计，能够显著提升转矩密度与效率，降低转矩脉动，从而增强eVTOL 飞行器在城市空中交通领域的应用潜力，并改善其在噪声控制、载重能力和飞行安全性等方面的性能。针对某eVTOL 飞行器使用的双三相驱动电机，提出一种基于NSGA-Ⅲ的分层优化方法，对6 个定子结构参数进行优化，通过仿真与实验结果验证优化方法的可靠性。结果表明：优化后电机的转矩密度和效率分别达到了55.5 N·m/kg 和93.55%，较优化前分别提高了6.05 N·m/kg 和1.35%，同时将转矩脉动从3.96%降低至2.54%。

Abstract:

By optimizing the design of electric motors for electric vertical take-off and landing (eVTOL) aircraft, significant improvements can be achieved in torque density and efficiency while reducing torque ripple, thereby enhancing the application potential of eVTOL vehicles in urban air mobility and improving their performance in noise control, payload capacity, and flight safety. This paper proposes an NSGA-III-based hierarchical optimization method for a dual three-phase drive motor used in an eVTOL aircraft, focusing on six stator structural parameters. After optimization, the motor achieves a torque density of 55.5 N·m/kg and efficiency of 93.55%, representing improvements of 6.05 N·m/kg and 1.35% respectively compared to the pre-optimized design, while reducing torque ripple from 3.96% to 2.54%. The reliability of the optimized solution is verified through both simulation and experimental results.