Research on Superconducting Magnet in a Superconducting Synchronous Generator
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Design and test of superconducting magnet (SM) for a superconducting synchronous generator (SSG) are studied in this paper. First, a suitable superconducting material is selected to make SM by analyzing the characteristics and application background of the five practical superconducting materials, and the applicability and feasibility of the selected superconducting materials are demonstrated. Second, the initial structural parameters of the SM are obtained by finite element method (FEM). In addition, the influence of structural parameters of SM on the performance of SSG is analyzed by simulation. Then, an optimal algorithm combining response surface methodology (RSM) and particle swarm optimization (PSO) is proposed to optimize the structure of SM in order to give full play to the advantages of SM. The simulated results verify that the proposed optimal algorithm is feasible and effective. Finally, the prototype of SM is made by the optimized size, and the SM is tested at a low temperature to obtain the critical temperature and critical current of the SM; the experimental results verify that the designed SM can meet the requirements of SSG.
KeywordsMgB2 Superconducting magnet Superconducting synchronous generator Finite element method
This work is financially supported by the National Natural Science Foundation of China under Grant 51807124 and 11872257, Natural Science Foundation of Hebei Province of China under Grants E2018210162, E2018210144 and E2016210104, and Department of Education of Hebei Province of China under Grant ZD2017069.
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