Method for obtaining alternating current loss of high-temperature superconducting magnet containing iron core

Abstract

The invention discloses a method for obtaining alternating current loss of a high-temperature superconducting magnet containing an iron core, and the method comprises the following steps: (1) determining the structure of the superconducting magnet containing an iron core and material parameters of each component; (2) according to the structure of the superconducting magnet model and the material parameters of each component, establishing an alternating current loss calculation model; (3) constructing a current density constraint condition and a relative permeability constraint condition; (4) solving the alternating current loss calculation model according to the current density constraint condition and the relative permeability constraint condition to obtain the current density J and the electric field intensity E of the superconducting winding at a t moment; and (5) obtaining the alternating current loss of the superconducting winding according to the current density and the electricfield intensity. The method for obtaining alternating current loss of a high-temperature superconducting magnet containing an iron core realizes effective calculation of alternating current loss; andhas the characteristics of fast calculation speed, good convergence and high adaptability to large-scale magnets, a calculation result is smaller in error compared with a traditional method, the modeling process is not complicated, and the method is of great significance to assessing the alternating current loss in design of an actual engineering superconducting magnet.

Description

technical field [0001] The invention belongs to the technical field of high-temperature superconducting magnets, and more specifically relates to a method for obtaining AC loss of a high-temperature superconducting magnet containing an iron core. Background technique [0002] The rapid development of the economy has made my country's demand for electricity consumption continue to increase, and power transmission technology has gradually developed to a higher level. With the increase of the capacity of the power system and the complexity of the structure, the conventional power equipment has highlighted several technical difficulties. As a forward-looking technology, superconducting power technology has been deeply studied by scholars at home and abroad. Currently common superconducting power devices include superconducting current limiters, superconducting reactors, superconducting transformers, superconducting cables, superconducting magnetic energy storage systems, etc. ...

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Problems solved by technology

[0005] Aiming at the defects of the prior art, the object of the present invention is to provide a method for obtaining the AC loss of a high-temperature superconducting magnet with an iron core, aiming at solving the problems of low calculation efficiency, The poor convergence of the calculation results leads to the problem that the AC loss of the iron-core high-temperature superconducting magnet cannot be obtained effectively

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