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A novel method of flat YBCO rings development for shield-type superconducting fault current limiters fabrication

Hekmati, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.physc.2011.10.007
  3. Abstract:
  4. The application of flat superconductor rings has been investigated in the structure of inductive shield-type high temperature superconducting fault current limiters, HT c-SFCL. A laboratory scale inductive shield-type HT c-SFCL has been designed and fabricated using flat superconductor rings. The fabrication process has been fully presented. YBCO powder has been used for the fabrication of superconductor rings. This fabrication process, being quite innovative, is introduced completely. The method of the trapped field measurement has been used for the critical current density measurement of the fabricated superconductor rings. The device with nominal current of 2 A was tested in a 30 V circuit. The SFCL successfully limited the fault currents of up to 10 times the nominal current to an approximately fixed value of 3 A. The voltage-current characteristic of the fabricated prototype has also been obtained and has shown compatibility with the fault current limitation results
  5. Keywords:
  6. Fabrication process ; Fault current limitation ; Fault current limiter ; High temperature ; High temperature superconducting ; Laboratory scale ; Nominal currents ; Shield type ; Superconducting fault current limiters ; Superconductor ring ; Trapped field ; Voltage-current characteristics ; YBCO powder ; Fabrication ; High temperature superconductors ; Limiters ; Superconducting electric lines ; Superconductivity ; Yttrium barium copper oxides ; Electric fault currents
  7. Source: Physica C: Superconductivity and its Applications ; Volume 472, Issue 1 , January , 2012 , Pages 39-43 ; 09214534 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0921453411004928