Plasma and Fusion Research

Volume 18, 2405013 (2023)

Regular Articles

Numerical Analysis of Hysteresis Loss in Stacked REBCO Tapes for Large Current-Carrying Conductors
Tetsuhiro OBANA and Akifumi KAWAGOE1)
National Institute for Fusion Science, Toki 509-5292, Japan
1)
Kagoshima University, Kagoshima 890-0065, Japan
(Received 12 December 2022 / Accepted 31 January 2023 / Published 24 February 2023)

Abstract

To evaluate the hysteresis loss in stacked HTS tapes for large current-carrying conductors, a single REBCO tape and 50 stacked REBCO tapes were modeled with the finite element method, including T-A formulation. Using the model, hysteresis losses in the single and stacked tapes were calculated under a condition that the direction of an external varying magnetic field was perpendicular to the tape plane. The calculation results were in good agreement with the measurement results. Consequently, the developed models are valid for a hysteresis loss calculation. In addition, we investigated magnetic field penetration into the stacked tapes using the model. The investigation shows that the external varying magnetic field used in the measurements cannot penetrate the center of the stacked tapes.

Keywords

HTS conductor, REBCO tape, hysteresis loss, modeling, FEM, T-A formulation

DOI: 10.1585/pfr.18.2405013

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