2010 Fiscal Year Final Research Report
Functional Design for Ag-Sheathed High-Tc Superconducting Wires with Low AC Losses
| Project/Area Number |
20686020
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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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 | Toyohashi University of Technology |
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Principal Investigator |
INADA Ryoji Toyohashi University of Technology, 大学院・工学研究科, 助教 (30345954)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 高温超電導線材 / 交流損失 / 高抵抗バリア / ツイスト構造 / 結合周波数 |
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| Research Abstract |
The aim of this study is development of Ag-sheathed bismuth-based (Bi2223)high-T_c superconducting tapes with low-AC loss by introducing interfilamentary oxide resistive barriers. Both Ca_2CuO_3 and SrZrO_3 have little side effect of transport property of a Bi2223 tape, SrZrO_3 is more effective to increase matrix resistivity and also to suppress the interfilamentary electromagnetic coupling under an AC external field. By controlling geometrical parameter of a tape with oxide barriers, AC losses (50Hz, 50mT) at 77 K are reduced by 20% in a parallel transverse field while by 50% in a perpendicular field, compared with a conventional Bi2223 tape with fully coupled filaments.
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Research Products
(48 results)
