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 previous study, in order to investigate the contact characteristics of switch, 50 A current test was performed and the contact resistance between two contacts was measured by four-terminal method. As a result, it became clear that polishing and metal depositing on contact surfaces was effective methods to reduce the residual resistance. This paper focused on the greater current test (above 50 A) in order to perform more practical experiment as PCS used for SMES. In this experiment, the authors examined the characteristics to the transfer current of switch, which was not obtained by former 50 A current test. As a result, it was obtained that the transfer current had a relationship with the layer thickness of deposited Ag on contact surfaces.
| Original language | English |
|---|---|
| Pages (from-to) | 1361-1364 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 463-465 |
| Issue number | SUPPL. |
| DOIs | |
| Publication status | Published - 2007 Oct 1 |
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Keywords
- Contact resistance
- Metal deposition
- Persistent current switch
- Quenching
- YBCO
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Electrical contact characteristics of YBaCuO bulk. / Fukuda, K.; Fujita, H.; Tomita, M.; Murakami, Masato; Sakai, Naomichi; Hirabayashi, I.; Sawa, K.
In: Physica C: Superconductivity and its Applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 1361-1364.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrical contact characteristics of YBaCuO bulk
AU - Fukuda, K.
AU - Fujita, H.
AU - Tomita, M.
AU - Murakami, Masato
AU - Sakai, Naomichi
AU - Hirabayashi, I.
AU - Sawa, K.
PY - 2007/10/1
Y1 - 2007/10/1
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 previous study, in order to investigate the contact characteristics of switch, 50 A current test was performed and the contact resistance between two contacts was measured by four-terminal method. As a result, it became clear that polishing and metal depositing on contact surfaces was effective methods to reduce the residual resistance. This paper focused on the greater current test (above 50 A) in order to perform more practical experiment as PCS used for SMES. In this experiment, the authors examined the characteristics to the transfer current of switch, which was not obtained by former 50 A current test. As a result, it was obtained that the transfer current had a relationship with the layer thickness of deposited Ag on contact surfaces.
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 previous study, in order to investigate the contact characteristics of switch, 50 A current test was performed and the contact resistance between two contacts was measured by four-terminal method. As a result, it became clear that polishing and metal depositing on contact surfaces was effective methods to reduce the residual resistance. This paper focused on the greater current test (above 50 A) in order to perform more practical experiment as PCS used for SMES. In this experiment, the authors examined the characteristics to the transfer current of switch, which was not obtained by former 50 A current test. As a result, it was obtained that the transfer current had a relationship with the layer thickness of deposited Ag on contact surfaces.
KW - Contact resistance
KW - Metal deposition
KW - Persistent current switch
KW - Quenching
KW - YBCO
UR - http://www.scopus.com/inward/record.url?scp=34548384876&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548384876&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2007.04.307
DO - 10.1016/j.physc.2007.04.307
M3 - Article
VL - 463-465
SP - 1361
EP - 1364
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SUPPL.
ER -