Nitrogen boil-off method of measuring AC losses in YBCO coils

H. Okamoto; H. Hayashi; F. Sumiyoshi; M. Iwakuma; T. Izumi; Y. Yamada; Y. Shiohara

doi:10.1016/j.physc.2007.02.029

Nitrogen boil-off method of measuring AC losses in YBCO coils

H. Okamoto, H. Hayashi, F. Sumiyoshi, M. Iwakuma, T. Izumi, Y. Yamada, Y. Shiohara

Applied Energy Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The nitrogen boil-off method, which is categorized as one of the calorimetric methods, has been developed as a practical method for measuring AC losses in high temperature superconducting (HTS) coils. The boil-off method offers direct and convenient measurement compared to the electric method. The measurement sensitivity of about 0.5 W was confirmed by the improvement of sample vessel structure and the control of the heater power. This paper reports the results of a comparison of the AC losses in superconducting coils using YBCO tapes measured with the boil-off method and those obtained by the electric method and by analysis.

Original language	English
Pages (from-to)	795-797
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	463-465
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.physc.2007.02.029
Publication status	Published - Oct 1 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.physc.2007.02.029

Cite this

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title = "Nitrogen boil-off method of measuring AC losses in YBCO coils",

abstract = "The nitrogen boil-off method, which is categorized as one of the calorimetric methods, has been developed as a practical method for measuring AC losses in high temperature superconducting (HTS) coils. The boil-off method offers direct and convenient measurement compared to the electric method. The measurement sensitivity of about 0.5 W was confirmed by the improvement of sample vessel structure and the control of the heater power. This paper reports the results of a comparison of the AC losses in superconducting coils using YBCO tapes measured with the boil-off method and those obtained by the electric method and by analysis.",

author = "H. Okamoto and H. Hayashi and F. Sumiyoshi and M. Iwakuma and T. Izumi and Y. Yamada and Y. Shiohara",

note = "Funding Information: This work was supported in part by the New Energy and Industrial Technology Development Organization (NEDO) as Development of Fundamental Technologies for Superconductivity Applications.",

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T1 - Nitrogen boil-off method of measuring AC losses in YBCO coils

AU - Okamoto, H.

AU - Hayashi, H.

AU - Sumiyoshi, F.

AU - Iwakuma, M.

AU - Izumi, T.

AU - Yamada, Y.

AU - Shiohara, Y.

N1 - Funding Information: This work was supported in part by the New Energy and Industrial Technology Development Organization (NEDO) as Development of Fundamental Technologies for Superconductivity Applications.

PY - 2007/10/1

Y1 - 2007/10/1

N2 - The nitrogen boil-off method, which is categorized as one of the calorimetric methods, has been developed as a practical method for measuring AC losses in high temperature superconducting (HTS) coils. The boil-off method offers direct and convenient measurement compared to the electric method. The measurement sensitivity of about 0.5 W was confirmed by the improvement of sample vessel structure and the control of the heater power. This paper reports the results of a comparison of the AC losses in superconducting coils using YBCO tapes measured with the boil-off method and those obtained by the electric method and by analysis.

AB - The nitrogen boil-off method, which is categorized as one of the calorimetric methods, has been developed as a practical method for measuring AC losses in high temperature superconducting (HTS) coils. The boil-off method offers direct and convenient measurement compared to the electric method. The measurement sensitivity of about 0.5 W was confirmed by the improvement of sample vessel structure and the control of the heater power. This paper reports the results of a comparison of the AC losses in superconducting coils using YBCO tapes measured with the boil-off method and those obtained by the electric method and by analysis.

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JO - Physica C: Superconductivity and its applications

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ER -

Nitrogen boil-off method of measuring AC losses in YBCO coils

Abstract

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