Quench protection technique for HTS coils with electronic workbench

J. H. Joo, S. B. Kim, T. Kadota, H. Sano, S. Murase, H. M. Kim, Y. K. Kwon, Y. S. Jo

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The stability and the protection of superconducting applications are very important issues. High temperature superconductor (HTS) is stable than low temperature superconductor (LTS). However, due to the high stability of HTS, HTS coils have complicate behaviors of normal transition - such as a recovery into the superconducting state or thermal runaway - which is determined by the magnitude of disturbance, coil size, the structure of winding wire and cooling condition. In this paper, we propose the quench protection system based on the active power method which can detect the quench by measuring the generating instantaneous active power in HTS coils. And the quench detection circuit adopted a software circuit by LabVIEW which was added a new quench protection technique to the circuit in order to improve its detection performance. Furthermore, it can monitor interior states of HTS coils with acquiring the only coil voltages in real time. To confirm the validity of the suggested technique, the experiments were performed with the hardware circuit for quench detection simultaneously. The experimental results are presented and discussed in this paper.

Original languageEnglish
Pages (from-to)1874-1879
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue number20
Publication statusPublished - Nov 1 2010


  • Data acquisition
  • Normal transition
  • Quench detection & protection

ASJC Scopus subject areas

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


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