# Numerical Modeling of AC Loss in HTS Coated Conductors and Roebel Cable Using T-A Formulation and Comparison With H Formulation

Article · Yufan Yan, Timing Qu, Francesco Grilli

- Archive id: doi:10.1109/access.2021.3067037
- Published: 2021-01-01
- Venue: IEEE Access
- DOI: https://doi.org/10.1109/access.2021.3067037
- Citations: 51
- Source URL: https://doi.org/10.1109/access.2021.3067037
- PDF: https://ieeexplore.ieee.org/ielx7/6287639/9312710/09387409.pdf
- Provenance: openalex

## Abstract

With recent advances in second-generation high temperature superconductors (2G HTS) and cable technologies, various numerical models based on finite-element method (FEM) have been proposed to help interpret measured AC loss and assist cable design. The T-A formulation, implemented in COMSOL, shows great potential for reducing the overall computation costs. In this paper, the performance of the T-A formulation for calculating the AC loss of coated superconductors and cables were assessed and compared against the widely accepted H formulation, with benchmark model of a single REBCO tape in 2D/3D and a 14-strand Roebel cable. Evaluation and comparison on key metrics including the computation time, the number of degrees of freedom and the numerical accuracy were presented, which could provide a reference for researchers in applying the T-A formulation for AC loss calculation.

_Abstract reproduced under CC-BY (publisher license, via OpenAlex)._

Topics: [Applied Superconductivity & HTS Magnets](https://space-kitty.com/topics/applied-superconductivity)

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