Electrical machines with high-temperature superconducting (HTS) armature windings can benefit from high power density and efficiency. Furthermore, by using permanent magnets (PM) on the rotor, the cryogenic system can be significantly simplified compared with the fully superconducting (SC) machines or the machines with SC field windings. Compared with the conventional electrical machines, the performance of machines with HTS armature windings can be more sensitive to the design parameters due to the interaction between the operating current and the flux density. In this article, the influence of stator geometry on the machine with HTS armature windings and PM rotor is investigated. By considering the interaction between the operating current and the flux density, an iteration procedure for calculating the operating current of the HTS armature windings is proposed. A 10-MW surface-mounted PM wind power generator with HTS armature windings is studied by the finite element analysis. It is found that machines with different coil angle have different behaviors when changing the tooth width and the dimensions of tooth tips, which is different from conventional electrical machines. A new design and optimization method is then developed. Finally, the optimal design is identified with global optimization.

中文翻译：

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高温超导电枢绕组永磁转子风力发电机定子优化

具有高温超导 (HTS) 电枢绕组的电机可受益于高功率密度和效率。此外，通过在转子上使用永磁体 (PM)，与全超导 (SC) 电机或具有 SC 励磁绕组的电机相比，可以显着简化低温系统。与传统电机相比，由于工作电流和磁通密度之间的相互作用，具有 HTS 电枢绕组的电机的性能对设计参数更为敏感。在本文中，研究了定子几何形状对具有 HTS 电枢绕组和 PM 转子的电机的影响。通过考虑工作电流和磁通密度之间的相互作用，提出了一种计算高温超导电枢绕组工作电流的迭代程序。通过有限元分析研究了具有 HTS 电枢绕组的 10 MW 表面安装式永磁风力发电机。发现不同线圈角度的电机在改变齿宽和齿尖尺寸时有不同的表现，这与传统电机不同。然后开发了一种新的设计和优化方法。最后，通过全局优化确定最优设计。这与传统的电机不同。然后开发了一种新的设计和优化方法。最后，通过全局优化确定最优设计。这与传统的电机不同。然后开发了一种新的设计和优化方法。最后，通过全局优化确定最优设计。