Earticle

초록

영어

Quench Detection System (QDS) is essential to guarantee the stable operation of the Korea Superconducting Tokamak Advanced Research (KSTAR) Poloidal Field (PF) magnet system because the stored energy in the magnet system is very large. For the fast response, voltage-based QDS has been used. Co-wound voltage sensors and balanced bridge circuits were applied to eliminate the inductive voltages generated during the plasma operation. However, as the inductive voltages are hundreds times higher than the quench detection voltage during the pulse-current operation, Central Difference Averaging (CDA) and MIK, where I and K stand for mutual coupling indexes of different circuits, which is an active cancellation of mutually generated voltages have been suggested and studied. In this paper, the CDA and MIK technique were applied to the KSTAR magnet for PF magnet quench detection. The calculated inductive voltages from the MIK and measured voltages from the CDA circuits were compared to eliminate the inductive voltages at result signals.

목차

Abstract
 1. INTRODUCTION
 2. CDA AND MIK
  2.1. Basics
  2.2. Simple CDA
  2.3. 1R type CDA circuit
  2.4. 3R type CDA circuit
  2.5. MIK calculation
 3. CDA+MIK RESULT
  3.1. CDA+MIK (1R type)
  3.2. MIK+CDA (3R type).
 4. CONCLUSION
 REFERENCES

키워드

저자

• Seok Chan An [ Yonsei University, National Fusion Research Institute(NFRI), Daejeon, Rep. of Korea ]
• Jinsub Kim [ Yonsei University, National Fusion Research Institute(NFRI), Daejeon, Rep. of Korea ]
• Tae Kuk Ko [ Yonsei University, Seoul, Korea ]
• Yong Chu [ National Fusion Research Institute(NFRI), Daejeon, Rep. of Korea ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537