With the merits of the excellent self-stabilization, the high-temperature superconducting (HTS) magnetic levitation (maglev) system is relatively appropriate for high-speed railway transportation. The suspension force and guidance force are mainly produced by the interaction between the HTS bulks and the permanent magnet guideway (PMG). Before the HTS bulks turn into the superconducting state, it will capture the magnetic field generated by the PMG and interact with the magnetic field of PMG after turning into the superconducting state, which creates the suspension phenomena. Therefore, the research of the magnetic flux density of external magnetic fields excited by the PMG is very significant to an intensive discovery of HTS maglev properties. However, the previous single-peak guideway needs to be improved to supply HTS maglev with sufficient vertical magnetic fields gradients. Otherwise, it might cause the guidance force to be not great enough for practical engineering application. Hence, this paper proposed a better “V” shaped PMG, by combining the single-peak and “V” shaped PMG. Under the typical work condition of 30 mm field cooling height, 10 mm work height and 10 mm lateral displacement, the levitation force and guidance force of HTS bulks could attain 6779 N and 2778 N, respectively. Compared to the levitation force and guidance force produced by using single-peak PMG, these two forces increase by 12.6% and 137%. As a result, the new “V” shaped PMG will provide HTS maglev with more adequate guidance performance and load capacity.

中文翻译：

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高温超导磁悬浮单峰“X”形组合式永磁导轨


高温超导（HTS）磁悬浮（maglev）系统具有良好的自稳定性优点，比较适合高速铁路运输。悬浮力和导向力主要由高温超导体和永磁导轨（PMG）之间的相互作用产生。 HTS块体在进入超导态之前，会捕获PMG产生的磁场，并与进入超导态后的PMG磁场相互作用，从而产生悬浮现象。因此，研究永磁发电机激发的外部磁场的磁通密度对于深入发现高温超导磁悬浮特性具有重要意义。然而，之前的单峰导轨需要改进，才能为高温超导磁悬浮提供足够的垂直磁场梯度。否则，可能会导致导向力不够大，无法满足实际工程应用。因此，本文通过结合单峰和“V”形永磁发电机，提出了一种更好的“V”形永磁发电机。在现场冷却高度30mm、工作高度10mm、横向位移10mm的典型工况下，高温超导块体的悬浮力和导向力分别达到6779N和2778N。与使用单峰PMG产生的悬浮力和引导力相比，这两个力分别增加了12.6%和137%。因此，新型“V”形永磁发电机将为高温超导磁浮提供更充足的引导性能和负载能力。