Characteristics of AC transport current losses in YBCO coated conductors and their dependence on distributions of critical current density in the conductors

Daisuke Miyagi, Osami Tsukamoto

Research output: Contribution to journalConference articlepeer-review

22 Citations (Scopus)

Abstract

We measured AC transport current losses in two kinds of thin film YBCO coated conductors with different critical current densities. The results show that the loss characteristics do not follow the Norris strip model. The loss in one of the samples follows the Norris elliptical model and the loss data of the other sample fall in between the elliptical and strips models. It is considered that the loss in a YBCO conductor of high quality, that is, high critical current density, follows the strip model. However, the measured losses of even high critical current density conductor (Jc ≈ 106 A/cm2) does not follow the strip models. In the paper, an analytical model is presented to describe the AC transport current loss characteristics more generally than the Norris models and the model can well describe the experimental results.

Original languageEnglish
Pages (from-to)1628-1631
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume12
Issue number1
DOIs
Publication statusPublished - 2002 Mar 1
Event17th Annual Conference on Magnet Technology - Geneva, Switzerland
Duration: 2001 Sep 242001 Sep 28

Keywords

  • AC transport current loss
  • High T superconductor
  • Loss measurement
  • YBCO coated conductor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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