A self-field finite element analysis method for high-current superconducting conductors

Abstract

The invention provides a large-current superconductor self-field finite element analysis method. The method comprises the steps that a two-dimensional section of a superconductor is built, the finite element method is adopted for performing finite element magnetic field analyzing on the superconductor under the large-current testing condition, magnetic field distribution of the superconductor generated under the large-current operation condition is obtained, the self-field coefficient and position where the maximum magnetic field is generated on the superconductor are obtained, and therefore the appropriate magnitude of a background field for testing of the superconductor is determined and designed. Superconductor self-field analysis under the large-current testing condition is carried out by adopting the finite element method, the self-field two-dimensional distribution of the superconductor can be obtained through more accurate and visual analysis compared with an analysis method, the maximum magnetic field region of the superconductor can be obtained through visual analysis, the self-field coefficient of the conductor is determined, and therefore the reasonable magnitude of the background field for large-current testing of the superchanductor can be designed on the basis of the self-field coefficient.

Description

technical field [0001] The invention relates to the field of data simulation, in particular to a self-field finite element analysis method of a large-current superconducting conductor. Background technique [0002] Large superconducting conductors such as CICC superconducting conductors and Rutherford superconducting conductors work in the environment of high current and high magnetic field. Superconducting conductors are very sensitive to magnetic fields. When the local area of ​​superconducting conductors exceeds the critical magnetic field, superconducting Quenching of conductors. [0003] The critical performance test of a superconducting conductor is to energize the superconducting conductor under a certain test back field condition, and test the critical current of the conductor. When the superconducting conductor is under the condition of carrying current, the conductor itself will generate a self-field, and the total magnetic field of the conductor is the superposit...

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Problems solved by technology

[0004] At present, the self-field analysis of superconducting conductors is to calculate the size and distribution of the magnetic field analytically, but it is not very convenient for the overall distribution of the magnetic field of the two-dimensional cross-section of the superconducting conductor and the intuitive expression of the maximum self-field

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