2D finite element modelling of the AC transport power loss in multi-layer Bi-2223 cables

Petrov, Alеxander; Pilgrim, James; Golosnoy, Igor O.

doi:10.1088/1742-6596/1559/1/012134

Cited by 3 publications

(3 citation statements)

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“…Only one quarter of the cable's cross-section is simulated, due to symmetry. Each individual tape in the cross-section is built using a homogenized superconducting domain, as described in detail in [18], and their widths are modified based on their phase as described in [19]. For the calculation of the Maxwell equations, the H-formulation is used.…”

Section: Modelling Of the Cable Cross-sectionmentioning

confidence: 99%

“…H-formulation: The H-formulation [24] has been successfully used to model current density and electromagnetic fields in superconducting tapes [25]- [27]. It has been used successfully in [18], [19].…”

Section: Modelling Of the Cable Cross-sectionmentioning

confidence: 99%

“…While the use of a computing cluster can decrease the computational time, the model can be ran on an office PC with 16 GB RAM, and it produced fairly accurate results in less than 60 hours. Further details are given in previous publications [18], [19].…”

Section: Introductionmentioning

confidence: 99%

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Efficient Multiphysics Finite Element Simulation of a Transient Fault in a Bi-2223 HTS Power Cable

Petrov

Golosnoy

Pilgrim

2021

IEEE Trans. Appl. Supercond.

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In this work, the problem of a high temperature superconducting cable (HTSC) response to and recovery from a transient short circuit fault is discussed and a finite element solution to the problem is presented. The full model consists of three subroutines, connecting together 1) electromagnetic phenomena in HTSCs and associated Joule heat release, 2) heat transfer from the HTSC to the cooling circuit, 3) convective heat transport in liquid nitrogen. These subroutines are connected via geometric and variable couplings. The background of the real cable to be modelled is laid out together with its key properties. The most important parameter and variable calculations are explained in detail. In order to facilitate a computational speedup through manipulation of the active physics during selected intervals of time, the simulation is split in three distinct stages -steady-state, transient fault, and recovery. Moreover, it was shown how the entire simulation may be performed over a moderately reasonable amount of time using low computational resources when certain approximations are exploited -namely, using the electromagnetic model only on a limited number of cross-sections along the cable. This work shows that fairly accurate results can be achieved on an office PC using a commercial FEM software even without access to computing clusters, and that the same model can be used to examine both normal and transient operation.

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Section: Modelling Of the Cable Cross-sectionmentioning

confidence: 99%