Optimization of electromagnetic characteristics of canted stacked structures by copper tape interleaving
The REBCO stack is a common intermediate unit in HTS applications.REBCO stack has greater current capacity and mechanical strength than a single tape.However,under the influence of yield strain,the increase of the number of tapes in REBCO stack structure will produce a larger stress,thus limiting the number of tapes.The canted stack was studied to release the limitation of stacking number.When the number of tapesis allowed to increase,metal tapes interleaving can be used to optimize the structure of the canted stack structure(CSS).Due to the non-uniform distribution of current,the effect of fixed number of copper tapes at different positions of CSS on the critical current may be different.Firstly,based on the experimentaland simula-tion method,the electromagnetic characteristics of CSS used different interleavingschemes were studied.Then,the specific effects of different structures were quantified based on response surface methodology.Finally,based on the experimental verifica-tion,the performance advantages of copper tapes interleaving of the CSS were verified.
REBCO stackCanted stack structureCopper tape interleavingOptimizationAC loss
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