Earticle

초록

영어

It has been well known that a toroid is the inevitable shape for a high temperature superconducting (HTS) coil as a component of a large scale superconducting magnetic energy storage system (SMES) because it is the best option to minimize a magnetic field intensity applied perpendicularly to the HTS wires. Even though a perfect toroid coil does not have a perpendicular magnetic field, for a practical toroid coil composed of many HTS pancake coils, some type of perpendicular magnetic field cannot be avoided, which is a major cause of degradation of the HTS wires. In order to suggest an optimum design solution for an HTS SMES system, we need an accurate, fast, and effective calculation for the magnetic field, mechanical stresses, and stored energy. As a calculation method for these criteria, a numerical calculation such as an finite element method (FEM) has usually been adopted. However, a 3-dimensional FEM can involve complicated calculation and can be relatively time consuming, which leads to very inefficient iterations for an optimal design process. In this paper, we suggested an intuitive and effective way to determine the maximum magnetic field intensity in the HTS coil by using an analytic and statistical calculation method. We were able to achieve a remarkable reduction of the calculation time by using this method. The calculation results using this method for sample model coils were compared with those obtained by conventional numerical method to verify the accuracy and availability of this proposed method. After the successful substitution of this calculation method for the proposed design program, a similar method of determining the maximum mechanical stress in the HTS coil will also be studied as a future work.

목차

Abstract
1. INTRODUCTION
2. CALCULATION OF MAGNETIC FIELD
2.1. Calculation of the maximum radial magnetic field
2.2. Calculation of External Field by other coils
3. RESULT
4. CONCLUSION
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• Ji-Young Lee [ Korea Polytechnic University, 237 Sangidaehak-ro, Siheung, Gyeonggi-do, Korea ]
• Seyeon Lee [ Korea Polytechnic University, 237 Sangidaehak-ro, Siheung, Gyeonggi-do, Korea ]
• Kyeongdal Choi [ Korea Polytechnic University, 237 Sangidaehak-ro, Siheung, Gyeonggi-do, Korea ]
• Sang Ho Park [ Korea Polytechnic University, 237 Sangidaehak-ro, Siheung, Gyeonggi-do, Korea ]
• Gye-Won Hong [ Korea Polytechnic University, 237 Sangidaehak-ro, Siheung, Gyeonggi-do, Korea ]
• Sung Soo Kim [ Korea Polytechnic University, 237 Sangidaehak-ro, Siheung, Gyeonggi-do, Korea ]
• Ji-Kwang Lee [ Woosuk University, 443 Samnye-ro, Wanju-gun, Ceollabuk-do, Korea ]
• Woo-Seok Kim [ Korea Polytechnic University, 237 Sangidaehak-ro, Siheung, Gyeonggi-do, 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