Charging and persistent-current mode operating characteristics of BSCCO magnet using High-Tc superconducting power supply

Hyun Chul Jo, Seong Eun Yang, Young Jae Kim, Young Jin Hwang, Yong Soo Yoon, Yoon Do Chung, Tae Kuk Ko

Research output: Contribution to journalArticlepeer-review

Abstract

This paper deals with charging and persistent-current mode operating characteristics of BSCCO magnet load using high-temperature superconducting (HTS) power supply. The HTS power supply consists of two heater-triggered switches, an iron-core transformer with the primary copper winding and the secondary BSCCO solenoid, and a BSCCO magnet load. The magnet load was fabricated by double pancake winding and its inductance is about 21 mH. A hall sensor was installed at the middle of the magnet load to measure the current in the load. In order to investigate the efficient pumping characteristics, operating tests of heater-triggered switch with respect to dc heater current were carried out, and the electromagnet current was determined by considering saturation characteristics of its iron core. The saturation characteristics of charged current in the magnet load were observed with respect to various pumping periods: 12 s, 14 s, 24 s and 32 s. After charging the magnet load, the persistent current was measured. The operating characteristics of the persistent current mode were mainly determined by joint resistance and magnet load.

Original languageEnglish
Pages (from-to)30-34
Number of pages5
JournalJournal of the Korea Institute of Applied Superconductivity and Cryogenics
Volume11
Issue number1
Publication statusPublished - 2009 Mar

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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