Numerical study of the influence of material properties on pulsed-field magnetization for hts bulk magnets

Jun Ogawa, Tetsuo Oka, Satoshi Fukui, Takao Sato, Naoto Watanabe, Zulaika Mohd Basir

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

To optimize pulse field magnetization processes for high-temperature superconducting (HTS) bulk magnets, it is important to control the magnetic field amplitude and the driving temperature. Many publications have reported on the experimental and numerical results of the pulsed-field magnetization method. In the numerical method, the HTS bulk properties are modeled to simplify the calculations, examples being the Bean model and the Kim model, etc. During pulsed-field magnetization the critical current density in the HTS bulk changes dramatically due to the magnetic field and temperature rise induced by the ac losses. For these reasons these properties are key to the analysis of the pulsed-field magnetization process, which is calculated using the measured practical HTS bulk properties, and these results show different temperature rise and trapped magnetic field characteristics. We assumed that HTS bulk has intrinsic deterioration in practice. Therefore, we recalculated using the adjusted parameters, and these analytic results correspond with the experimental results.

Original languageEnglish
Article number6600815
JournalIEEE Transactions on Applied Superconductivity
Volume24
Issue number3
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Keywords

  • Critical current density distribution
  • high-temperature superconducting (HTS) bulk
  • numerical analysis
  • pulsed-field magnetization process

ASJC Scopus subject areas

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

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