Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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A study on Quench Characteristics considering Winding Tension in Superconducting Coil using Acoustic Emission Technique

권선장력을 고려한 초전도 계자코일의 퀀치특성 및 AE 신호특성에 관한 연구

  • 이준현 (부산대 기계공학부) ;
  • 이민래 (부산대 대학원 기계설계공학과) ;
  • 손명환 (한국전력연구소 초전도응용연구그룹) ;
  • 권영길 (한국전기연구소 초전도응용연구 그룹장)
  • Published : 1999.10.01
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Abstract

In this study, acoustic emission(AE) technique has been applied to detecting quench which is one of the serious peoblems to assure the integrity of superconducting coil at cryogenic temperature. The characteristics of AE parameters have been analyzed by correlating with the number of quenches, whinding tension of superconducting coil and charge rate of transport current. The quench localization was also performed using AE signals and there was also good correlation between quench current and AE parameters such as AE energy and AE events. In this study, it was confirmed that AE signals were mainly due to the conductor motion which caused by premature quenching. It was also found that optimized winding tension at superconducting coil was needed to prevent quench caused by conductor motion.

Keywords

References

  1. 차세대 고효율 발전플랜트 기술개발
  2. Nondestructive Testiing Handbook v.5
  3. 비파괴검사학회 춘계학술대회 논문집 음향 방출에 의한 Nb3Sn 복합 초전도테이프의 미시적 변형거동 특성평가 이준현;이민래
  4. 대한 전기학회 하계학술대회 논문집 A v.EMP 29 레이스트랙형 초전도 계자코일의 AE신호 특성평가 손명환;백승규;권영길
  5. Cryogenics v.32 no.5 Acoustic emission monitoring on a model field winding for the 70MW class superconducting generator H. Yoshimura;A. Ueda;M. Morita(et al.)
  6. Nondestructive Handbook v.5 Acoustic Emission Diagnosticand Monitoring Techniques for Superconducting Magnets
  7. Cryogenics v.26 Acoustic emission monitoring results from a Fermi dipole O. lge;A. D. Mclntuff;Y. Iwasa
  8. IEEE Transactions on Magnetics v.27 no.2 Instability of Superconducting Racetrack Magnets K. Ikizawa;N. Takasu;Y. Murayama
  9. 대한기계학회지 논문 투고중 음향방출기법을 이용한 극저온 환경하에서 초전도 계자코일의 퀀칭탐지 적용에 관한 연구 이준현;이민래;손명환(외)