Feasibility Study of High Temperature Superconductor Opening Switches

Abstract

Raw materials and equipment were obtained and new high temperature superconductors (HTSC'S) were fabricated. YBCO material showed promising response to a 1T electromagnetic field. Three methods of quenching superconductivity examined. Four-point measurement technique used. HTSC samples were long bars of bulk material with silver contacts, YBaSaCaO material has 200 times higher normal state resistivity than YBCO, but low current density. Pulsed current quenching experiment caused sample to quench immediately, but took several MSEC to recover. MAgnet pulse circuit and microwave experiments set up. Magnetic quenching approach provides a fast operation of the switch but requires circuits for generating fast magnetic pulses. Microwave quenching was mainly a thermal process and thus was slow. Conclusion: Feasibility demonstrated. (RH)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1988
Accession Number
ADA203699

Entities

People

  • Mike Fernandez
  • Yonhua T. Tzeng

Organizations

  • Auburn University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Classification
  • Electrical Engineering
  • Energy
  • Energy Storage
  • Engineering
  • Feasibility Studies
  • High Temperature
  • High Temperature Superconductors
  • Magnetic Fields
  • Materials
  • Microwaves
  • Nitrogen
  • Power Supplies
  • Quenching
  • Resistors
  • Superconductivity
  • Transition Temperature

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Molecular Photonics/Laser Physics
  • Superconducting Magnet Technology