Experiment and Numerical Analysis on the YOROI Structure for High-Strength REBCO Coil

Xudong Wang, Yoshiaki Tsuji, Atsushi Ishiyama, Hiroshi Yamakawa, Tomonori Watanabe, Shigeo Nagaya

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    To achieve a high current density and a compact REBCO coil, a reinforcing structure is essential to prevent coil degradation and deformation caused by the large Lorentz force. A new reinforcing structure for the REBCO coil called the Y-based oxide superconductor and reinforcing outer integrated (YOROI) coil was proposed in the previous study. The YOROI coil, which exhibited no degradation after an excitation test with a maximum hoop stress of 1.7 GPa at 4.2 K in 8-T backup fields, has great ability to reduce the stress and strain acting on the coil winding to maintain the coil shape and prevent degradation in the REBCO wire. In this study, the hoop stress in the winding and the stress shared by the reinforcing structure of a YOROI model coil were measured at 40 K in 10-T backup fields to clarify the reinforcing mechanism of the YOROI coil. A three-dimensional structural analysis, which simulated the experimental condition, was performed on the model coil to determine the distribution of stress and strain in the winding and reinforcing structure.

    Original languageEnglish
    Article number7397957
    JournalIEEE Transactions on Applied Superconductivity
    Volume26
    Issue number4
    DOIs
    Publication statusPublished - 2016 Jun 1

    Fingerprint

    high strength
    numerical analysis
    Numerical analysis
    coils
    Degradation
    Experiments
    hoops
    Oxide superconductors
    Lorentz force
    backups
    degradation
    Structural analysis
    Current density
    Wire
    structural analysis
    high current
    wire
    current density
    oxides

    Keywords

    • REBCO coil
    • reinforcing structure
    • YOROI coil

    ASJC Scopus subject areas

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

    Cite this

    Experiment and Numerical Analysis on the YOROI Structure for High-Strength REBCO Coil. / Wang, Xudong; Tsuji, Yoshiaki; Ishiyama, Atsushi; Yamakawa, Hiroshi; Watanabe, Tomonori; Nagaya, Shigeo.

    In: IEEE Transactions on Applied Superconductivity, Vol. 26, No. 4, 7397957, 01.06.2016.

    Research output: Contribution to journalArticle

    Wang, Xudong ; Tsuji, Yoshiaki ; Ishiyama, Atsushi ; Yamakawa, Hiroshi ; Watanabe, Tomonori ; Nagaya, Shigeo. / Experiment and Numerical Analysis on the YOROI Structure for High-Strength REBCO Coil. In: IEEE Transactions on Applied Superconductivity. 2016 ; Vol. 26, No. 4.
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    AU - Watanabe, Tomonori

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