Model files

Effect of tape non uniformities on end-to-end V-I characteristics of superconducting tape

This code evaluates the influence of non-uniformities of (Ic,n) along a superconducting tape, modeled as a series of non-linear resistances, each characterized by its Ic and n. In particular, it calculates the effect of the statistical distributions of Ic and n of these segments on th …

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T-A formulation for modelling 2G HTS stacks

Impressive work Nothing else matters Impressive work Nothing else matters The model shows how to use the thin strip approximation for the superconducting coated conductors to speed up calculation. The model simulates the magnetisation of a 2G HTS stack. The T formulation is used for m …

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Mixed A- and H- formulation for modeling electrical machines with superconducting windings

The model uses the H-formulation for the superconducting windings and the A-formulation for the non-superconducting parts. Two important lines are defined: the “tramodel” lines, which separates the two formulations, and the “rotation” line, which separates the fixed and rotating parts …

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3-D numerical simulation with the fast Fourier transform of a magnetic shield and a magnetic lens made of a bulk type II superconductor

The method is efficient and can be easier to implement than the alternative approaches based on the finite element methods.

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Modeling and simulation of termination resistances in superconducting cables

The models presented here are used to simulate termination resistances which are largely responsible for the uneven distribution of currents in superconducting cables [1]. For this purpose, four different models are presented. The first is a 0D stationary model, where time enters as a …

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Superconducting magnetic bearing composed by a permanent magnet and bulk HTS sample

In the considered examples, the HTS sample is either a bulk superconductor or stacks of 2G wires. In the second case, the 2G stack was homogenized in order to speed up the solution. The movement between the HTS and the permanent magnet is avoided in the model by restricting the simula …

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Superconducting fault current limiter (SFCL) connected to a power system

The model can be implemented in any power system simulator (e.g., Matlab/Simulink, EMTP, PowerFactoy, etc.) for transient analyses of short circuit currents. Here one presents the method applied to MCP-BSCCO-2212 SFCL devices. The method however has already been extended to SFCL based …

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Parameter-free method to extract the Jc(B,θ) field-dependence from in-field current–voltage characteristics of HTS tapes

The method presented here allows computing the critical current density (Jc) of superconducting materials from its in-field experimentally measured critical current (Ic). This is particularly important for applications like HTS cables for power transmission and fault current limiters, …

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2-D electro-thermal model for simulating non-uniform quench in 2G HTS coated conductors

The model calculates the time evolution of the electric potential and the temperature in a 2G HTS CC when a transport current is applied in presence of a low Jc region (defect) in the tape. The heat generated at the defect location creates a normal zone that propagates along the tape. …

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Full 3-D time-dependent electromagnetic model for Roebel cables

This model was shared by V. Zermeno, Karlsruhe Institute of Technology. This model simulates the current distribution in the superconducting layers of a Roebel cable composed of 14 strands and estimates its AC losses. The mode is rather general and allows considering the cases of curr …

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