软磁复合材料推力磁轴承的优化设计研究

推力磁轴承是磁悬浮系统的重要组成部分,主要用于控制转子的轴向位移。设计获得质量轻巧、损耗较低、性能良好的推力磁轴承是工程中追求的目标。在考虑轴承承载力、温升及磁密限制等约束情况下建立了寻求轴承最优质量的目标函数,利用相应的求解方法获得了轴承的最优结构参数。同时对优化模型进行了有限元分析,得到不同频率下气隙磁密、涡流损耗等参数,揭示了不同工作条件下涡流的影响程度。

Optimum Design of Thrust Magnetic Bearing with Soft Magnetic Composite Material

Thrust magnetic bearing is an important part of magnetic suspension system, which is mainly used to control the axial displacement of the rotor. Designing thrust magnetic bearings with lightweight, low loss and good performance is the goal of engineering.The objective function was established to find the optimal quality of bearings under the constraints of bearing capacity, temperature rise and magnetic density limitation. The optimal structural parameters of bearings were obtained by using corresponding solving method. At the same time, the optimization model was analyzed by using finite element method. The parameters of air gap magnetic density and eddy current loss were obtained at different frequencies, and the influence degree of eddy current under different working conditions was revealed