Summary
This paper describes a finite element model using T-A formulation to predict current distribution in high-temperature superconducting tape stacks used in cable-in-conduit conductors. The model was validated against experimental data from both straight and bent conductor samples, revealing that cable geometry significantly affects current distribution uniformity. The findings suggest that non-uniform current distribution under bending stress could expose cables to irreversible damage during operation, highlighting the utility of predictive modelling in HTS conductor design.
UK applicability
This work has no direct applicability to Vitagri's core mission of farming systems, soil health, nutrient density, and human health. It addresses materials science and engineering challenges in superconductor technology.
Key measures
Voltage-current (V–I) characteristics, current distribution among tape stacks, magnetic field configuration, tape degradation patterns, superconducting to normal transition behaviour
Outcomes reported
The study presents a 2D finite element model to compute magnetic field and current distribution in stacked HTS tapes, validating it against experimental V–I characteristics of straight and bent cable-in-conduit conductors. Results demonstrate uniform current distribution in straight cables but non-uniform distribution in bent samples, revealing position-dependent tape degradation.
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