Excitation Test of YBCO Tape at 45 K With Through-Wall Linear-Motor Type Flux Pump

The linear-motor type flux pump is a wireless direct current (DC) power supply that facilitates contactless excitation of high-temperature superconducting (HTS) magnets, thereby obviating the requirement for current leads. This feature significantly reduces heat leakage and operating costs of cryoge...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2024-11, Vol.34 (8), p.1-4
Main Authors: Wu, Chenghuai, Wang, Wei, Zhang, Mengchao, Dong, Hao, Ma, Yixiao, Wang, Ke, Zhou, Li, Liu, Peng, He, Lin, Tang, Fuling, Huang, Shikang
Format: Article
Language:English
Subjects:
HTS magnet
linear-motor type flux pump
macroscopic magnetic coupling effect
Magnetic flux
Magnets
Refrigeration
Stators
Superconducting coils
Superconducting magnets
through-wall excitation
YBCO wire
Yttrium barium copper oxide
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The linear-motor type flux pump is a wireless direct current (DC) power supply that facilitates contactless excitation of high-temperature superconducting (HTS) magnets, thereby obviating the requirement for current leads. This feature significantly reduces heat leakage and operating costs of cryogenic systems. In this investigation, we present the successful through-wall excitation of HTS magnets using the linear-motor type flux pump. The dissipative elements of the flux pump are positioned external to the Dewar wall, thereby imposing no thermal burden on the cryogenic system while wirelessly exciting the HTS magnet enclosed within the Dewar. Experimental trials were carried out with the HTS stator cooled to 45 K and the HTS coil cooled to 30 K, demonstrating that the flux pump can deliver a peak current of 237 A with two YBCO tapes connected in parallel. Additionally, observations confirmed that below 77 K, when a traveling magnetic wave is DC-biased over the zero-axis, it results in maximum output current from the flux pump as predicted by theoretical models based on macroscopic magnetic coupling effects. This successful through-wall excitation experiment validates potential industrial applications of flux pumps for powering HTS magnets.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2024.3425324