2014 Fiscal Year Final Research Report
Basic Study on Monitoring and Diagnosis During Operation of Actual Superconducting Power Devices
| Project/Area Number |
25820106
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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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 |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | 超伝導電力機器 / 診断 / 監視 / クエンチ / 交流損失 / 超伝導変圧器 |
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| Outline of Final Research Achievements |
In this study, development of the monitoring system for high temperature superconducting (HTS) coils or HTS power devices have been carried out. In the system, the new method to measure abnormal area in windings in HTS coils is applied. The method can measure safely and easily abnormal area. As results, it was shown that observed signals decreased drastically when normal transitions generated. And it was shown that distributions of critical current densities in the superconducting tapes can evaluated from profile of magnetic fields around the short straight samples on which electromagnetic fields were measured. In addition, it was shown followings points by experiments on HTS transformers: Local abnormal area in windings of HTS transformer can be observed. Normal transition in windings can be diagnosed even in HTS transformers which have multilayer windings and an iron core.
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| Free Research Field |
電気電子工学、電力工学・電力変換・電気機器
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