Abstract
High-temperature superconducting (HTS) no-insulation (NI) coil is a promising design because of high current density, high thermal stability, and self-protection mechanism. Flux pumping is a contactless charging method for a superconducting magnet, which can reduce the cryogenic losses associated with current leads. In this study, we compared the charging performance of a rotating permanent magnets-based flux pump for two different types of HTS coils: an INS coil and an NI coil. Results showed that the rotating type flux pump works well with both coils. But the charging speed of NI coil is much slower, which results from the small parallel characteristic resistance of NI coil. Results also show that the output DC voltage and inherent dynamic resistance of the flux pump increase linearly with the increase of rotating speed.
Original language | English |
---|---|
Article number | 8663420 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 29 |
Issue number | 5 |
DOIs | |
Publication status | Published - Aug 2019 |
Bibliographical note
Funding Information:Manuscript received October 26, 2018; accepted February 7, 2019. Date of publication March 8, 2019; date of current version March 27, 2019. This work was supported by Cambridge Commonwealth, European & International Trust. (Corresponding author: Jianzhao Geng.) J. Ma, J. Geng, J. Gawith, H. Zhang, C. Li, B. Shen, Q. Dong, J. Yang, J. Chen, and T. A. Coombs are with the Department of Engineering, University of Cambridge, Cambridge CB3 0FA, U.K. (e-mail:,[email protected]).
Publisher Copyright:
© 2002-2011 IEEE.
Keywords
- flux pump
- High temperature superconductor
- no insulation coil
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering