Abstract
By a pick-up-coil method, the additional ac loss due to the formation of two-strand parallel conductors consisting of REBa 2 Cu 3 O y (REBCO, RE = rare earth) superconducting tapes was experimentally investigated. We recently improved the theoretical expression of the additional ac loss assuming that the voltage-current characteristics are expressed by the n-value model. The objective of this study is to prove the validity of the improved theoretical expression by experiment. The two insulated REBCO strands were cowound into a one-layer solenoidal coil. A uniform external magnetic field was applied in the axial direction of the sample coil. The additional ac losses were measured by the pick-up-coil method in sinusoidal ac magnetic fields whose maximum amplitude and frequency are 0.1 T and 10 Hz, respectively. The observed additional ac losses corresponded with the theoretical prediction. Therefore, it was concluded that the improved theoretical expression is more accurate than the previous one. At high-frequency regions, the observed additional ac losses slightly deviated from the theoretical predictions.
| Original language | English |
|---|---|
| Article number | 8626543 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 29 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Aug 1 2019 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Cite this
Experimental Validation of Theoretical Expressions on Additional AC Loss of Two-Strand Parallel Conductors Composed of REBa 2 Cu 3 O y Tapes via Pick-Up-Coil Method . / Miura, Shun; Oki, Soichiro; Furukawa, Takuma; Iwakuma, Masataka.
In: IEEE Transactions on Applied Superconductivity, Vol. 29, No. 5, 8626543, 01.08.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Experimental Validation of Theoretical Expressions on Additional AC Loss of Two-Strand Parallel Conductors Composed of REBa 2 Cu 3 O y Tapes via Pick-Up-Coil Method
AU - Miura, Shun
AU - Oki, Soichiro
AU - Furukawa, Takuma
AU - Iwakuma, Masataka
PY - 2019/8/1
Y1 - 2019/8/1
N2 - By a pick-up-coil method, the additional ac loss due to the formation of two-strand parallel conductors consisting of REBa 2 Cu 3 O y (REBCO, RE = rare earth) superconducting tapes was experimentally investigated. We recently improved the theoretical expression of the additional ac loss assuming that the voltage-current characteristics are expressed by the n-value model. The objective of this study is to prove the validity of the improved theoretical expression by experiment. The two insulated REBCO strands were cowound into a one-layer solenoidal coil. A uniform external magnetic field was applied in the axial direction of the sample coil. The additional ac losses were measured by the pick-up-coil method in sinusoidal ac magnetic fields whose maximum amplitude and frequency are 0.1 T and 10 Hz, respectively. The observed additional ac losses corresponded with the theoretical prediction. Therefore, it was concluded that the improved theoretical expression is more accurate than the previous one. At high-frequency regions, the observed additional ac losses slightly deviated from the theoretical predictions.
AB - By a pick-up-coil method, the additional ac loss due to the formation of two-strand parallel conductors consisting of REBa 2 Cu 3 O y (REBCO, RE = rare earth) superconducting tapes was experimentally investigated. We recently improved the theoretical expression of the additional ac loss assuming that the voltage-current characteristics are expressed by the n-value model. The objective of this study is to prove the validity of the improved theoretical expression by experiment. The two insulated REBCO strands were cowound into a one-layer solenoidal coil. A uniform external magnetic field was applied in the axial direction of the sample coil. The additional ac losses were measured by the pick-up-coil method in sinusoidal ac magnetic fields whose maximum amplitude and frequency are 0.1 T and 10 Hz, respectively. The observed additional ac losses corresponded with the theoretical prediction. Therefore, it was concluded that the improved theoretical expression is more accurate than the previous one. At high-frequency regions, the observed additional ac losses slightly deviated from the theoretical predictions.
UR - http://www.scopus.com/inward/record.url?scp=85061631096&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061631096&partnerID=8YFLogxK
U2 - 10.1109/TASC.2019.2895496
DO - 10.1109/TASC.2019.2895496
M3 - Article
AN - SCOPUS:85061631096
VL - 29
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 5
M1 - 8626543
ER -