High-temperature superconducting (HTS) maglev systems show the intrinsic advantage of self-stabilizing levitation without external control, therefore, they have great potential to be a new type of rail transit. At present, the cryogenic condition (77 K) of HTS bulks is maintained by pouring liquid nitrogen (LN 2 ) into the dewar and supplementing LN 2 at regular intervals, which cannot be maintained for a long period and in a controllable cryogenic environment. This cooling method is easy to realize but not the best approach for future commercial high-speed maglev. It is therefore necessary to try other cooling methods. In this paper, we try the direct cooling method. A cryocooler was used to directly cool a cryogenic unit with eight bulk superconductors which are designed to be close to the practical application. The levitation performance of the cryogenic unit with superconductors is tested on SCML-01. The temperature stability of the cryogenic unit was veri...

中文翻译：

---

低温冷却器直接冷却的车载高温超导散装机组的悬浮性能

高温超导（HTS）磁悬浮系统显示出无需外部控制的自稳定悬浮的固有优势，因此，它们有很大的潜力成为一种新型的轨道交通。目前，通过将液态氮（LN 2）倒入杜瓦瓶中并定期补充LN 2来维持HTS主体的低温条件（77 K），而这种状态不能长期保持且在可控的低温环境中。这种冷却方法很容易实现，但不是将来商业高速磁悬浮的最佳方法。因此，有必要尝试其他冷却方法。在本文中，我们尝试直接冷却方法。低温冷却器被用来直接冷却具有八个大体积超导体的低温单元，这些超导体设计为接近实际应用。具有超导体的低温单元的悬浮性能在SCML-01上进行了测试。低温装置的温度稳定性很好。