Electromagnetic characteristic analysis of superconducting toroidal transformer with interleaved winding structure
Conventional transformers have large leakage flux,which increases losses.In contrast,toroidal transformers have the advantages of small leakage flux and high efficiency.Based on this,this paper introduced a superconducting toroidal trans-former with no magnetic core,which used REBCO superconducting tapes as winding materials.The influence of using air and sil-icon steel sheets as magnetic core materials,as well as the alternating magnetic core structure of air and silicon steel sheets,on the electromagnetic performance of the toroidal transformer was investigated.The results show that the efficiency of the two-layer interleaved winding structure of the superconducting toroidal transformer with no magnetic core can reach above 80％,providing possibilities for the design of future high-capacity toroidal transformers.
High-temperature superconductivityToroidal transformerFinite element analysisInterleaved winding
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