Pulsed Field Magnetization of YBa2Cu3O7-δ Bulk Assembly for Motor Application
Pulsed Field Magnetization of YBa2Cu3O7-δ Bulk Assembly for Motor Application
复制标题
用于电机应用的 YBa2Cu3O7-δ 散装组件的脉冲场磁化
DOI：
10.1109/tasc.2021.3133826
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发表时间：
2022
影响因子：
1.8
通讯作者：
C. Cai
中科院分区：
文献类型：
--
作者：
Kangle Yang;Teng Zhang;Jinyu He;Qing Zhang;Canyu Zhang;D. Zhou;C. Cai
利用块体超导体作为准低温永磁体，研制出一种具有较强剩余磁场的高温超导(HTS)电机。在这项工作中，我们专注于块体超导体的原位磁化，这被认为是主要的挑战之一。对电机中使用的YBa2Cu3O7-δ块材进行了脉冲场磁化处理，将其作为单个样品进行组装。通过PFM获得的峰值捕获场与77K下的场冷磁化获得的峰值陷阱场相似。对于块体组装，发现相邻块体超导体的存在影响了PFM过程中的磁通穿透，特别是在低外场下。这导致峰值俘获场降低3%到4%，积分磁通量降低10%到13%。
A high-temperature superconducting (HTS) motor has been developed using bulk superconductors as quasi-cryo-permanent magnets to allow a stronger remanent field. In this work, we focus on the in-situ magnetization of the bulk superconductors which is considered one of the main challenges. YBa2Cu3O7-δ bulks that had been used in the motor were magnetized via pulsed field magnetization (PFM) as single samples and assembly. The peak trapped field achieved via PFM is similar to that achieved via field cooling magnetization at 77 K. For the bulk assembly, the existence of a neighboring bulk superconductor was found to affect the penetration of the magnetic flux during the PFM process especially under low applied fields. This leads to a 3% to 4% reduction in peak trapped field, and 10% to 13% reduction in integrated magnetic flux.