采用交错式绕组结构的超导环形变压器电磁特性分析

Electromagnetic characteristic analysis of superconducting toroidal transformer with interleaved winding structure

常规变压器产生的漏磁大,从而使损耗增加,相比之下环形变压器具有漏磁小、效率高等优点。在此基础上,本文介绍了一种超导环形无磁芯变压器,选择REBCO超导带材作为绕组材料,探究了使用空气和硅钢片作为磁芯材料、空气和硅钢片交替的磁芯结构以及线圈排布方式对环形变压器电磁性能的影响。结果表明:两层排布的交错式绕组结构超导环形无磁芯变压器效率能够在80%以上,为后续大容量环形变压器的设计提供了可能。

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 transformer with no magnetic core, which used REBCO superconducting tapes as winding materials. The influence of using air and silicon 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.