新型轴向分相磁悬浮飞轮电机及其优化设计

Optimization Design of Novel Axial Split-phase Bearingless Flywheel Machine

为改善磁悬浮飞轮电机的悬浮和转矩性能,提出一种新型轴向分相磁悬浮飞轮电机及其优化设计方法,在阐述电机基本结构及工作原理的基础上,结合动态双响应面与萤火虫算法对定子齿形参数作进一步优化。首先通过Box-Behnken设计选取代表性的齿形参数组合以建立样本数据空间,并结合多项式响应面法及支持向量机(SVM)建立电机性能响应模型。然后以电机转矩和悬浮出力为优化目标,采用萤火虫算法获取最优齿形参数。有限元仿真结果表明,优化后电机的平均转矩和悬浮力分别提高了37.5%和110.13%,验证了所提结构及齿形优化方法的有效性。

In order to improve the suspension and torque output performance of bearingless flywheel machine,a novel axial split-phase bearingless flywheel machine and its optimized design method were proposed in this paper.Based on the basic structure and working principle of the machine,the dynamic dual response surface and firefly algorithm were combined to further optimize the parameters of the stator teeth of the machine.First,the representative tooth-profile parameter combinations were selected through the Box-Behnken design to establish the sample data space,and the response models of machine performance were established combined with polynomial response surface method and support vector machine(SVM).Besides,the machine torque and suspension output were set as the optimization targets,and a firefly algorithm was employed to obtain the optimal tooth profile parameters.The finite element simulation results indicate that the average torque and suspension force of the optimized machine are increased by 37.5%and 110.13%,respectively,compared with the initial structure,which verifies the effectiveness of the structure and tooth profile optimization method described.