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Method for acquiring alternating-current loss of three-dimensional asymmetric structure high-temperature superconducting magnet

A technology of high-temperature superconductivity and AC loss, which is applied in the direction of measuring resistance/reactance/impedance, instruments, measuring devices, etc. It can solve the problems of not being able to quickly and effectively obtain the AC loss of high-temperature superconducting magnets with three-dimensional asymmetric structures, and reduce the amount of calculation , the effect of effective calculation

Active Publication Date: 2019-06-14
HUAZHONG UNIV OF SCI & TECH +1
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a method for obtaining the AC loss of a high-temperature superconducting magnet with a three-dimensional asymmetric structure, aiming at solving the problem that the existing calculation method for the AC loss cannot quickly and effectively obtain the high-temperature superconducting magnet with a three-dimensional asymmetric structure. Technical Problems of Magnet AC Loss

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  • Method for acquiring alternating-current loss of three-dimensional asymmetric structure high-temperature superconducting magnet
  • Method for acquiring alternating-current loss of three-dimensional asymmetric structure high-temperature superconducting magnet
  • Method for acquiring alternating-current loss of three-dimensional asymmetric structure high-temperature superconducting magnet

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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] This embodiment takes the calculation of the AC loss of a superconducting controllable reactor with a three-dimensional asymmetric structure as an example to illustrate a calculation method for the AC loss of a high-temperature superconducting magnet with a three-dimensional asymmetric structure. This embodiment is realized by COMSOL Multiphysics simulation software, and concrete implementation steps are as follows:

[0021] (1) Determine the structure of the three-dimensional asymmetric high-temperature superconducting magnet and the material parameters of each component;

[0022] magnet s...

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Abstract

The invention discloses a method for acquiring alternating-current loss of a three-dimensional asymmetric structure high-temperature superconducting magnet, wherein a three-dimensional finite elementanalytical model is built according to the structure of the superconducting magnet, the magnetic field intensity of a superconducting domain is calculated and extracted, the magnetic field intensity as a Dirichlet boundary condition is loaded to a local equivalent two-dimensional model so as to realize effective calculation of the alternating-current loss of the superconducting winding. Accordingto the method in the invention, the technical problem that when the alternating current loss of the three-dimensional asymmetric high-temperature superconducting magnet is calculated, normal solutioncannot be achieved due to too high degree of freedom of the model; meanwhile, according to the method proposed by the invention, the nonlinear resistance characteristic of a superconductor and the nonlinear BH magnetization characteristic of a ferromagnetic material can be fully considered, and the method has important significance in evaluating the alternating-current loss during design of the actual engineering superconducting magnet.

Description

technical field [0001] The invention belongs to the field of high-temperature superconducting magnets, and more specifically relates to a method for obtaining AC loss of a high-temperature superconducting magnet with a three-dimensional asymmetric structure. Background technique [0002] With the progress of my country's economy and society, the power system is gradually developing in the direction of large capacity, large scale, long distance and high voltage, and higher requirements are put forward for power equipment. Conventional power equipment has shown some disadvantages. With the emergence of high-temperature superconducting materials, superconducting electricity technology has been developed rapidly. Superconductors have zero-resistance characteristics and high current-carrying capacity. Applying superconducting technology to power equipment can effectively reduce power loss and reduce the volume of power equipment, which is of great significance to the economic dev...

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Application Information

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IPC IPC(8): G01R27/26
Inventor 张宇任丽王作帅唐跃进李敬东徐颖石晶
Owner HUAZHONG UNIV OF SCI & TECH
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