TY - JOUR
T1 - Investigation of the Magnetizing Performance of a REBCO Bulk Magnet Excited by Pulsed Field Magnetization Using Cross-Shaped Iron Yokes
AU - Yokoyama, Kazuya
AU - Oka, Tetsuo
N1 - Funding Information:
Manuscript received November 27, 2020; revised January 18, 2021, January 21, 2021, and February 10, 2021; accepted February 12, 2021. Date of publication February 16, 2021; date of current version March 9, 2021. This work was supported by JSPS KAKENHI under Grant 20K04449. (Corresponding author: Kazuya Yokoyama.) Kazuya Yokoyama is with the Division of Electrical and Electronic Engineering, Ashikaga University, 268-1 Omae-cho, Ashikaga, Tochigi 326-8558, Japan (e-mail: k-yokoyama@ ashitech.ac.jp).
Publisher Copyright:
© 2002-2011 IEEE.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/8
Y1 - 2021/8
N2 - We study to improve a trapped field of REBCO bulk excited by pulsed field magnetization (PFM). In PFM, a soft-iron yoke is used in order to expose the bulk to a large amount of magnetic flux for a long time. We paid attention to the soft-iron yoke and investigated the influence of its size and shape on the magnetizing performance. Our previous study estimated trapped-field performance when using disk-, ring-, and cross-shaped yokes and found that the cross-shaped yoke was the best. In this paper, we report our investigation of the influence of the width and arrangement of a cross-shaped yoke on magnetizing characteristics. When performing PFM experiments using yokes with 15 mm wide and 10 mm wide and arranging the growth sector region and the growth sector boundary, we obtained almost the same results. When comparing the total magnetic flux per unit weight, those values of 10 mm wide cross-shaped yoke were approximately 27% higher than those of 15 mm wide one.
AB - We study to improve a trapped field of REBCO bulk excited by pulsed field magnetization (PFM). In PFM, a soft-iron yoke is used in order to expose the bulk to a large amount of magnetic flux for a long time. We paid attention to the soft-iron yoke and investigated the influence of its size and shape on the magnetizing performance. Our previous study estimated trapped-field performance when using disk-, ring-, and cross-shaped yokes and found that the cross-shaped yoke was the best. In this paper, we report our investigation of the influence of the width and arrangement of a cross-shaped yoke on magnetizing characteristics. When performing PFM experiments using yokes with 15 mm wide and 10 mm wide and arranging the growth sector region and the growth sector boundary, we obtained almost the same results. When comparing the total magnetic flux per unit weight, those values of 10 mm wide cross-shaped yoke were approximately 27% higher than those of 15 mm wide one.
KW - pulsed field magnetization
KW - REBCO bulk magnet
KW - soft-iron yoke
KW - total magnetic flux
UR - http://www.scopus.com/inward/record.url?scp=85100913163&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85100913163&partnerID=8YFLogxK
U2 - 10.1109/TASC.2021.3059722
DO - 10.1109/TASC.2021.3059722
M3 - Article
AN - SCOPUS:85100913163
SN - 1051-8223
VL - 31
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 5
M1 - 9354963
ER -