Analysis of discharging characteristics in a Bi-2223/Ag coil for SMES with consideration of cooling capacity of a cryocooler

Kohei Higashikawa, Taketsune Nakamura, Hiroshi Okamoto

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)

抄録

We investigated discharging characteristics of a Bi-2223/Ag coil by means of thermo-electromagnetic coupled analysis. The objective was to evaluate the thermal behavior of conduction-cooled high temperature superconducting (HTS) coils when they are applied to superconducting magnetic energy storage (SMES) systems for voltage dip compensation. The electromagnetic analysis adopted finite element method (FEM) considering the J - E expressions, which can quantitatively estimate the experimental data obtained from the tape in wide ranges of temperature (20-77 K), external magnetic field (0.02-3 T) and its applied direction (arbitrary). The thermal analysis also employed FEM, and was performed under new boundary condition where heat flow rate into a cryocooler does not exceed its cooling capacity. It was shown that transient temperature rise occurred in the coil during discharging, and such temperature rise was underestimated for generally applied boundary condition, i.e., fixed value of temperature.

本文言語英語
論文番号1642915
ページ(範囲)578-581
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
16
2
DOI
出版ステータス出版済み - 6月 2006
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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