Abstract
A persistent current switch (PCS) is used for superconducting applications, such as superconducting magnetic energy storage (SMES) system. The authors have proposed a mechanical switch of Y-Ba-Cu-O (YBCO) bulk as a mechanical PCS. In this paper, the authors measured the contact resistance of Ag block with convex curvature and Ag-deposited YBCO sample (dAg/YBCO) in order to study in more depth about the effect of the deposited Ag, contributed greatly for reduction of the residual resistance. As the results of experiments and simulation using FEM, it became clear that it was effective for reducing the residual resistance from a point of increasing the contact area by depositing Ag on contact surface. In addition, it was assumed that the main origin of the residual resistance were the constriction resistance depending on the contact area and the deposited Ag resistance proportional to the layer thickness. Therefore, the thickness of the deposited Ag layer had the optimal value, was 0.60μm in this case. These results may also lead to support to design the mechanical PCS in the future.
| Original language | English |
|---|---|
| Title of host publication | Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts |
| Pages | 124-130 |
| Number of pages | 7 |
| DOIs | |
| Publication status | Published - 2007 |
| Event | 52nd IEEE Holm Conference on Electrical Contacts, Holm 2006 - Montreal, QC Duration: 2006 Jul 25 → 2006 Jul 27 |
Other
| Other | 52nd IEEE Holm Conference on Electrical Contacts, Holm 2006 |
|---|---|
| City | Montreal, QC |
| Period | 06/7/25 → 06/7/27 |
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Keywords
- Contact resistance
- Deformation analysis
- Metal deposition
- Persistent current switch
- YBCO
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Contact resistance characteristics of high temperature superconducting bulk - Part V. / Fujita, Hiroyuki; Fukuda, Katsuya; Sawa, Koichiro; Tomita, Masaru; Murakami, Masato; Sakai, Naomichi; Hirabayashi, Izumi.
Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts. 2007. p. 124-130 4063111.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Contact resistance characteristics of high temperature superconducting bulk - Part V
AU - Fujita, Hiroyuki
AU - Fukuda, Katsuya
AU - Sawa, Koichiro
AU - Tomita, Masaru
AU - Murakami, Masato
AU - Sakai, Naomichi
AU - Hirabayashi, Izumi
PY - 2007
Y1 - 2007
N2 - A persistent current switch (PCS) is used for superconducting applications, such as superconducting magnetic energy storage (SMES) system. The authors have proposed a mechanical switch of Y-Ba-Cu-O (YBCO) bulk as a mechanical PCS. In this paper, the authors measured the contact resistance of Ag block with convex curvature and Ag-deposited YBCO sample (dAg/YBCO) in order to study in more depth about the effect of the deposited Ag, contributed greatly for reduction of the residual resistance. As the results of experiments and simulation using FEM, it became clear that it was effective for reducing the residual resistance from a point of increasing the contact area by depositing Ag on contact surface. In addition, it was assumed that the main origin of the residual resistance were the constriction resistance depending on the contact area and the deposited Ag resistance proportional to the layer thickness. Therefore, the thickness of the deposited Ag layer had the optimal value, was 0.60μm in this case. These results may also lead to support to design the mechanical PCS in the future.
AB - A persistent current switch (PCS) is used for superconducting applications, such as superconducting magnetic energy storage (SMES) system. The authors have proposed a mechanical switch of Y-Ba-Cu-O (YBCO) bulk as a mechanical PCS. In this paper, the authors measured the contact resistance of Ag block with convex curvature and Ag-deposited YBCO sample (dAg/YBCO) in order to study in more depth about the effect of the deposited Ag, contributed greatly for reduction of the residual resistance. As the results of experiments and simulation using FEM, it became clear that it was effective for reducing the residual resistance from a point of increasing the contact area by depositing Ag on contact surface. In addition, it was assumed that the main origin of the residual resistance were the constriction resistance depending on the contact area and the deposited Ag resistance proportional to the layer thickness. Therefore, the thickness of the deposited Ag layer had the optimal value, was 0.60μm in this case. These results may also lead to support to design the mechanical PCS in the future.
KW - Contact resistance
KW - Deformation analysis
KW - Metal deposition
KW - Persistent current switch
KW - YBCO
UR - http://www.scopus.com/inward/record.url?scp=38549167092&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38549167092&partnerID=8YFLogxK
U2 - 10.1109/HOLM.2006.284075
DO - 10.1109/HOLM.2006.284075
M3 - Conference contribution
SN - 1424405815
SN - 9781424405817
SP - 124
EP - 130
BT - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
ER -