Rotating Permanent Magnets Based Flux Pump for HTS No-Insulation Coil

Jun Ma, Jianzhao Geng, Jamie Gawith, Heng Zhang, Chao Li, Boyang Shen, Qihuan Dong, Jiabin Yang, Jie Chen, Zhaokai Li, Tim A. Coombs

Research output: Contribution to journalArticlepeer-review

34 Citations (SciVal)

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 languageEnglish
Article number8663420
JournalIEEE Transactions on Applied Superconductivity
Volume29
Issue number5
DOIs
Publication statusPublished - 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

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