Earticle

초록

영어

The superconducting magnets have a large inductance as well as high operating current. Therefore, mega-joule scale energy can be stored in the magnet. The energy stored in the magnet is sufficient to damage the magnet when a quench occurs. Quench heater and dump resistor can be used to protect the magnet. However, using quench heater to create quench resistors through heat transfer can be slower than instantly switching resistors. Also, electrical short, overheating and breakdown can occur due to quench heater. Moreover, the number of dump resistor should be limited to avoid large terminal voltage. Therefore, in this paper, we propose a quench protection method for extracting the energy stored in a magnet by charging and discharging energy through a capacitor switching without increasing resistance. The simulation results show that the proposed system has a faster current decay within the allowable voltage level.

목차

Abstract
 1. INTRODUCTION
 2. CONCEPT OF ENERGY EXTRACTION SYSTEM USING CAPACITOR SWITCHING
  2.1. System Structure
  2.2. RLC Damping Characteristic
  2.3. Charging and Discharging of Capacitor
  2.4. Dual-switching for Fast-current Decay
 3. SIMULATION RESULT OF ENERGY EXTRACTION SYSTEM USING DUAL-CAPACITOR SWITCHING
 4. CONCLUSION
 ACKNOWLEDGMENT
 REFERENCES

키워드

저자

• Yojong Choi [ Yonsei University, Seoul, Korea ]
• Woo Seung Lee [ JH ENGINEERING CO., LTD., Anyang, Korea ]
• Seunghyun Song [ Yonsei University, Seoul, Korea ]
• Haeryong Jeon [ Yonsei University, Seoul, Korea ]
• Hyoungku Kang [ Korea National University of Transportation, Chungju, Korea ]
• Tae Kuk Ko [ Yonsei University, Seoul, 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