Abstract
To ensure the effective design and operation of high-temperature-superconducting (HTS) devices, the electromagnetic properties of HTS materials attract widespread attention. To date, the H-formulation and T-A formulation are two principal formulations applied to the finite element method to analyze the electromagnetic characteristics of HTS materials and devices. It is necessary to verify and to conduct a comparison of different effects of element order, mesh number along the width, and thickness expansion, with regard to calculation efficiency and accuracy under the H model and T-A model respectively. Compared to the H model, the T-A model with linear or quadratic element order can complete the calculation process more efficient having high accuracy and less time. The model with optimal parameters has been verified in a common case of a superconducting pancake coil. The optimal model of this work benefits to design or simulate HTS applications in building practical large-scale devices in terms of calculation efficiency and accuracy.
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