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AC loss properties in YBCO model coils for loss reduction

机译：YBCO模型线圈中的交流损耗特性可降低损耗

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摘要

We have strategically promoted R&D activity for the development of elemental technologies in order to put into practical HTS power transformers applying YBa2Cu3O7 (YBCO) coated conductors, focused on AC loss reduction in HTS coils. This paper shows AC loss reduction in model coils of YBCO tapes divided into five filaments by laser ablation. At first experiment, magnetization loss of YBCO tape with five filaments and YBCO tape with non-divided were firstly measured using a pick-up coil technology. Then, AC loss measurement is performed using two types of model coils of YBCO tapes with five filaments and non-divided, by two different technologies: an electric technique (i.e. 4-probe) and a calorimetric technique (i.e. boil-off). The results of the experiment show that the AC loss in the model coil of YBCO tapes with five filaments was reduced to one-fifth when compared with model coil of YBCO tapes with non-divided.
机译：为了将使用YBa2Cu3O7（YBCO）涂层导体的实用HTS电力变压器投入实际应用，我们在战略上促进了元素技术开发的研发活动，重点是降低HTS线圈的交流损耗。本文显示了通过激光烧蚀将YBCO胶带的模型线圈分为五根细丝，从而减少了交流损耗。在第一个实验中，首先使用拾波线圈技术测量了具有五根细丝的YBCO胶带和未分开的YBCO胶带的磁化损耗。然后，通过两种不同的技术，通过两种不同的技术使用两种类型的YBCO带的模型线圈进行交流损耗测量：YBCO带具有五个细丝并且不分开：电气技术（即4-探针）和量热技术（即沸腾）。实验结果表明，与不分开的YBCO带的模型线圈相比，具有五根细丝的YBCO带的模型线圈的AC损耗降低到五分之一。

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