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

Shun Miura, Soichiro Oki, Takuma Furukawa, Masataka Iwakuma

研究成果: ジャーナルへの寄稿記事

抄録

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.

元の言語英語
記事番号8626543
ジャーナルIEEE Transactions on Applied Superconductivity
29
発行部数5
DOI
出版物ステータス出版済み - 8 1 2019

Fingerprint

strands
Tapes
tapes
alternating current
coils
conductors
Superconducting tapes
Magnetic fields
Current voltage characteristics
predictions
magnetic fields
Rare earths
rare earth elements
electric potential
Experiments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

これを引用

@article{d8bb88807192490fac900cf7f95362d7,
title = "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",
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.",
author = "Shun Miura and Soichiro Oki and Takuma Furukawa and Masataka Iwakuma",
year = "2019",
month = "8",
day = "1",
doi = "10.1109/TASC.2019.2895496",
language = "English",
volume = "29",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "5",

}

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

VL - 29

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 5

M1 - 8626543

ER -