Improvement of performance of conduction cooled LTS pulse coils by using low temperature superconducting wires with high resistive matrix

高阻基体低温超导线材改善传导冷却LTS脉冲线圈性能

• 批准号: 20760186
• 负责人: KAWAGOE Akifumi
• 金额: $ 2.58万
• 依托单位: Kagoshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760186/
• 关键词: 超伝導コイル; 伝導冷却; 電力貯蔵; 瞬低; NbTi; MgB_2; 結合損失; 安定性; パルスコイル; SMES; CuNi

It is expected to develop the devices for protection of some production plants, such as semiconductor production plants, from momentary voltage drops. These devices are required to output the power of several MW for 1 second. As one of candidates, superconducting magnetic storage systems (SMES) using conduction cooled superconducting pulse coil wound with low temperature superconducting (LTS) conductors, are expected. The study has been carried out to develop the conduction cooled LTS pulse coil with low cost. In case of using NbTi wires which are produced with the lowest cost, it has been shown that pulse coils can be fabricated with low cost by using the superconducting conductors with high resistive matrix such as CuNi. In case of using Cu stabilized NbTi wires with high stability, it is shown that coil performance can be improved by both of using NbTi tapes and optimizing thermal diffusions from superconducting conductors to coil structures. In addition, improvement of performance of the MgB2 wires which are expected to use at 20K has been studied. It has been cleared that deformation of cross-sectional shape from the round shape into the tape shape is valuable for improvement of the wire performance from experiments using short samples of MgB2 tapes. Moreover, the design method to make the best use of the MgB2 tapes has been studied. The coil which can generate 3T of magnetic field has been wound by the parallel conductor composed of two tapes. It has been shown experimentally that the coil can drive stably.

预计将开发用于保护某些生产工厂（如半导体生产工厂）免受瞬时电压下降的设备。这些设备需要在1秒内输出数兆瓦的功率。利用低温超导（LTS）导体缠绕的超导脉冲线圈作为超导磁存储系统（SMES）的备选方案之一，有望得到广泛应用。为研制低成本的传导冷却LTS脉冲线圈进行了研究。以生产成本最低的NbTi导线为例，研究表明，利用具有高阻矩阵的超导导体如CuNi，可以低成本地制造脉冲线圈。以高稳定性的Cu稳定NbTi导线为例，表明通过使用NbTi带和优化超导导体对线圈结构的热扩散，可以提高线圈的性能。此外，还研究了预期在20K使用的MgB2线的性能改进。利用MgB2带的短样品实验表明，从圆形到带状的截面变形对线材性能的改善是有价值的。此外，还研究了充分利用MgB2带的设计方法。产生3T磁场的线圈由两根胶带组成的平行导体绕成。实验表明，该线圈具有稳定的驱动性能。

项目成果

Improvement of Electromagnetic Properties of MgB_2 Filaments due to Deformtion to Tape Shape

带状变形对MgB_2细丝电磁性能的改善

• 发表时间: 2010
• 期刊: IEEE Transact ions on Applied Superconductivity 20(印刷中)
• 作者: T.Mifune;S.Moriguchi;T.Iwashita;M.Shimasaki;A. Kawagoe;A.Kawagoe
• 通讯作者: A.Kawagoe

Improvement of Electromagnetic Properties of MgB_2 Filaments due to Deformation to Tape Shape

带状变形对MgB_2细丝电磁性能的改善

• 发表时间: 2009
• 作者: T.Mifune;S.Moriguchi;T.Iwashita;M.Shimasaki;A. Kawagoe;A.Kawagoe;A. Kawagoe;A.Kawagoe;A. Kawagoe;A.Kawagoe
• 通讯作者: A.Kawagoe

伝導冷却型低温超伝導パルスコイルの小型化

传导冷却低温超导脉冲线圈的小型化

• 发表时间: 2009
• 作者: T.Mifune;S.Moriguchi;T.Iwashita;M.Shimasaki;A. Kawagoe;A.Kawagoe;A. Kawagoe;A.Kawagoe;A. Kawagoe;A.Kawagoe;A.Kawagoe
• 通讯作者: A.Kawagoe

Critical Currents and AC Losses in MgB_2 Multifilamentary Tapes with 6 Twisted Filaments

具有 6 根扭曲细丝的 MgB_2 复丝带中的临界电流和交流损耗

• 发表时间: 2009
• 期刊: IEEE Transact ions on Applied Superconductivity 19
• 作者: T.Mifune;S.Moriguchi;T.Iwashita;M.Shimasaki;A. Kawagoe;A.Kawagoe;A. Kawagoe;A.Kawagoe
• 通讯作者: A.Kawagoe

IEEE Trans

IEEE传输

• 发表时间: 2010
• 期刊: Appl.Supercond Vol. 20, No. 2(in press)
• 作者: T.Mifune;S.Moriguchi;T.Iwashita;M.Shimasaki;A. Kawagoe
• 通讯作者: A. Kawagoe