高温超导磁悬浮轴承选择与设计

Selection and design of high temperature superconducting magnetic bearings

新型无摩擦高速高温超导磁悬浮轴承是高温超导磁悬浮技术最有潜力的应用之一,具有巨大的工业应用前景。文中分析比较了轴向型和径向型两种高温超导磁悬浮轴承的特点,并利用轴向型高温超导磁悬浮轴承结构简单、制作容易的优点,设计制作了一台双轴向型高温超导磁悬浮轴承样机。实验结果显示,上、下两高温超导磁悬浮轴承完全实现了2.4kg转轴的稳定悬浮及无接触旋转运行,目前受驱动电机转速限制,最高试验转速为3000 rpm。在稳定运行的基础上,该轴承样机将最终用于高温超导飞轮储能系统的原理演示。

The novel high temperature superconducting magnetic bearing （SMB） with advantages of frictionless and highspeed is one of the most potential applications of high temperature superconducting （HTS） maglev technology, which has trcmendons prospects for industrial applications. In the paper, the characteristics of axial and radial SMBs were analyzed firstly. As the axial SMB has the merits of simple configuration and easy fabrication, a double - axial SMB prototype was designed and fabricated firstly. The static maglev experiments show that the 2.4 kg rotational shaft can be completely and stably levitated respectively by the upper and lower SMBs. Due to the speed limit of driving motor, the highest test speed of SMB is 3000 rpm tentatively. In the next step, the SMB prototype will be applied to demonstrate the principle of I-ITS flywheel energy storage system.