2009 Fiscal Year Final Research Report
Improvement of performance of conduction cooled LTS pulse coils by using low temperature superconducting wires with high resistive matrix
| Project/Area Number |
20760186
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Kagoshima University |
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Principal Investigator |
KAWAGOE Akifumi Kagoshima University, 大学院・理工学研究科(工学系), 助教 (40315396)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 超伝導コイル / 伝導冷却 / 電力貯蔵 / 瞬低 / NbTi / MgB_2 |
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| Research Abstract |
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.
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[Presentation]2009
Author(s)
松島健介, 吉留佑介, 若林佑樹, 川越 明史, 他
Organizer
第81回2009年度秋季低温工学・超電導学会講演概要集
Place of Presentation
岡山県岡山市
Year and Date
2009-11-20
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