Rotational Test of an Integrated Magnetic Bearing Using Multiple HTS Cubic Bulk Units
Rotational Test of an Integrated Magnetic Bearing Using Multiple HTS Cubic Bulk Units
复制标题
DOI：
10.1109/tasc.2019.2963307
复制
发表时间：
2020-06
影响因子：
1.8
通讯作者：
K. Yamagishi;J. Ogawa
中科院分区：
文献类型：
--
作者：
K. Yamagishi;J. Ogawa
对于多立方超导体组合的磁轴承，放置位置是关键因素。本文采用排列优化的方法构建了由8个超导立方体块体单元组成的磁承载面。通过优化磁轴承捕获磁通分布的空间均匀性，确定了立方体超导体的组合排列方式。我们建立了一个物理模型，在这个模型中，一个漂浮转子形式的永磁体被一个集成的磁轴承表面从上到下夹在一起。利用旋转测试设备和编码器，研究了磁通量分布不均匀导致的最优排列指标对旋转损耗的影响。此外，利用激光位移计测量了由于磁通分布不均匀引起的旋转轴倾斜角。本研究提出的方法的优点是，当它被纳入各种体应用时，磁性分布可以根据立方体体的排列进行最佳控制，而不仅仅局限于SMB。
For magnetic bearings combining multiple cubic superconducting bulks, placement is a crucial factor. In this paper, the magnetic bearing surface constructed by arrangement optimization was composed of eight superconducting cubic bulk units. The combined arrangement of cubic superconducting bulks was determined by optimizing the spatial uniformity of the magnetic bearing's trapped magnetic flux distribution. We constructed a physical model in which a permanent magnet in the form of a floating rotor was sandwiched from above and below by an integrated magnetic bearing surface. Using rotation test equipment and an encoder, we investigated the influence of an optimal arrangement index on rotation loss that occurs due to magnetic flux distribution nonuniformity. In addition, the rotation axis tilt angle due to nonuniform magnetic flux distribution was measured using a laser displacement meter. The advantage of the method proposed in this research is that the magnetic distribution can be controlled optimally depending on the arrangement of the cubic bulk when it is incorporated in various bulk applications, not limited to SMB.