高温超导磁悬浮车用悬浮单元优化的实验研究

Experimental Study and Optimization of HTS Bulk Levitation Unit for High Temperature Superconducting Maglev Vehicle

研究了YBCO高温超导块材与2种典型的永磁轨道之间的最佳宽度比例。这2种永磁轨道的永磁用量基本相同,磁场分别呈单峰和双峰分布。通过改变YBCO高温超导块材组合的横向尺寸,利用高温超导磁悬浮测试装置(SCML-02)研究了在不同场冷高度、相同工作高度下高温超导块材在永磁轨道上的悬浮力。结果表明:块材与磁场呈单峰分布的永磁轨道之间的宽度比与场冷高度无关,而与呈双峰分布的永磁轨道之间的宽度比却极大地依赖于场冷高度。这一结果对高温超导磁悬浮车系统地优化设计是有帮助的。

In order to best use the onboard high-Tc superconductor （HTSC） and further optimize levitation unit of HTS Bulk for HTS maglev vehicle, we study the width ratios of HTSCs to two different kinds of permanent magnet guideways （PMGs） in which the distribution of magnetic fields are unimodal and bimodal respectively. Using the SCML-02 Maglev measurement system, the levitation forces of HTSCs above two kinds of PMGs are measured with the same working-height but different field-cooling heights. It is shown that the width ratios of onboard HTSCs to PMG with unimodal magnetic field are independent of FCH, but the width ratios of onboard HTSCs to PMG with bimodal magnetic field significantly depend on FCH. The result is beneficial for designing the HTS Maglev system.