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（例如半导体生产工厂）免受瞬时电压下降影响的设备。这些设备需要在1秒内输出数MW的功率。作为候选之一，超导磁存储系统（SMES）有望使用由低温超导（LTS）导体缠绕的传导冷却超导脉冲线圈。本研究旨在开发低成本的传导冷却LTS脉冲线圈。在使用以最低成本生产的NbTi线的情况下，已经表明，可以通过使用具有高电阻基体的超导导体（例如CuNi）来以低成本制造脉冲线圈。在使用具有高稳定性的铜稳定 NbTi 线的情况下，结果表明，通过使用 NbTi 带和优化从超导导体到线圈结构的热扩散可以提高线圈性能。此外，还研究了预计在20K下使用的MgB2丝的性能改进。通过使用MgB2带材的短样品进行的实验已经清楚地表明，将横截面形状从圆形变形为带状对于改善线材性能是有价值的。此外，还研究了充分利用MgB2带的设计方法。能产生3T磁场的线圈是由两根带子组成的平行导体缠绕而成。实验证明，线圈能够稳定驱动。

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

Critical Currents and AC Losses in MgB2 Multifilamentary Tapes with 6 Twisted Filaments

具有 6 根扭曲细丝的 MgB2 复丝带中的临界电流和交流损耗

• 发表时间: 2009
• 期刊: IEEE Transactions on Applied Superconductivity 19(印刷中)
• 作者: T.Mifune;S.Moriguchi;T.Iwashita;M.Shimasaki;A. Kawagoe;A.Kawagoe;A. Kawagoe;A.Kawagoe;A. Kawagoe
• 通讯作者: A. Kawagoe