Recently various high temperature superconducting (HTS) conductors have been commercialized in the power applications. While a BSCCO becomes tape or wire, others coated conductors (CC) are tapes. An HTS magnet utilized with these conductors can be fabricated as a form of pancake winding or layer winding. In the case of HTS magnet using a thin and rectangular tape, the pancake winding method is satisfied in the practical cases because of its suitable features. However, one of the disadvantages of this winding method is increasing brands and splices. From this point of view, we propose a layer winding method using an HTS tape and fabricated HTS layer coils. To verify the feasibility of the proposed winding method, critical current and over-current tests are investigated in liquid nitrogen and the results are compared with those of pancake coils. In addition, operating characteristics on the condition of various winding tensions are analyzed.
Bibliographical noteFunding Information:
Manuscript received September 13, 2011; accepted January 23, 2012. Date of publication April 03, 2012; date of current version May 24, 2012. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (2011-0020401) and by the Mid-career Researcher Program through an NRF grant funded by the MEST (2009-0085369). H. C. Jo, S. Choi, J. B. Na, J. Y. Jang, Y. J. Hwang, H. Y. Kim, and T. K. Ko are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: email@example.com). K.-S. Ryu is with the Division of Electrical & Bio-Medical Engineering, Hangyang University Seoul, Korea (e-mail: firstname.lastname@example.org). M. C. Ahn is with the Department of Electrical Engineering, Kunsan National University Kunsan-si, Korea (e-mail: email@example.com). Y. D. Chung is with the Department of Electrical Engineering, Suwon Science College, Hwasung-si, Korea (e-mail: firstname.lastname@example.org). H. M. Kim is with the Department of Electrical Engineering, Jeju National University Jeju-si, Korea (e-mail: email@example.com). Y. S. Yoon is with the Department of Electrical Engineering, Shin Ansan University Ansan-si, Korea (e-mail: firstname.lastname@example.org). Y. Kim is with the Research & Development Center, Doosan Heavy Industries & Construction Co., Ltd., 555 Gwigok-dong, Changwon, Gyeongnam, Korea (e-mail: email@example.com). H. Lee is with the Department of Materials Science and Engineering, Korea University Seoul, Korea (e-mail: firstname.lastname@example.org). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2012.2186549
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering