【目的】双转子轴向磁通永磁同步电机(AFPMSM)凭借其转矩密度高、结构紧凑等优势，在汽车轮毂、风力发电等领域备受关注。然而，传统表贴式永磁电机电感小，弱磁能力差。针对这一问题，本文提出一种面向8极48槽无定子轭AFPMSM的综合优化设计。【方法】通过d轴磁桥设计，在保持高转矩密度基础上，拓宽无定子轭AFPMSM的恒功率调速范围。深入分析影响弱磁性能的主要结构参数，以此确定优化变量。为显著提升优化效率，将三维有限元模型转换为二维等效模型，并进行多目标优化，验证等效结果的准确性。【结果】仿真结果表明，无定子轭AFPMSM输出转矩为96.2 N·m，恒功率调速范围达到5∶1。【结论】本文所提电机设计在满足高转矩密度需求前提下，有效拓宽了恒功率调速范围。

[Objective] Dual-rotor axial-flux permanent magnet synchronous motor (AFPMSM) attracts significant attention in applications such as automotive in-wheel drives and wind power generation due to their high torque density and compact structure. However, traditional surface-mounted permanent magnet motors exhibit low inductance and poor field-weakening capability. To address this issue, this paper proposes a comprehensive optimization design for an 8-pole 48-slot yokeless stator AFPMSM. [Methods] The constant power speed range of a yokeless stator AFPMSM was broadened while maintaining high torque density, through the design of a d-axis magnetic bridge. The key structural parameters influencing the field-weakening performance were thoroughly analyzed to identify the optimization variables. To significantly enhance the optimization efficiency, the three-dimensional finite element model was converted into a two-dimensional equivalent model for multi-objective optimization, and the accuracy of the equivalent conversion was validated. [Results] The simulation results indicated that the yokeless stator AFPMSM achieved an output torque of 96.2 N·m and a constant power speed range of 5∶1. [Conclusion] The proposed motor design effectively expands the constant power speed range while meeting the requirement for high torque density. system efficiency and operational stability.

黑龙江省自然科学基金联合基金培育项目(PL2024E006)