Abstract
RE1Ba2Cu3O7-∂ (RE: Rare Earth, Gd, Y and so on) coated conductors have a large aspect ratio and also anisotropy in critical current density. For practical application of REBCO tapes, we evaluated JC and ac loss properties in a wide range of temperature and magnetic field. The induced ac losses due to the perpendicular magnetic field to a tape face are considerably huge. Therefore, in case that REBCO coated conductors are applied electric power machines and devices, ac loss induced in the windings should amount to a great part of the total heat load. We proposed an ac loss reduction method, which is combined with a laser scribing technique and a special winding process into a multifilamentary structure. Additionally, we are trying to enhance critical current density JC, by doping artificial pinning centre. In this study we investigated the ac loss properties of multi-filament structural GdBCO tapes with BZO nanolods as artificial pinning centers. We measured ac losses of 5, 10, 20-filament GdBCO tapes by using a saddle-shaped pickup coil. Consequently we confirmed the ac loss decreased in inverse proportion to the number of filaments even in the GdBCO tapes with enhanced JC by introducing artificial pinning centers.
| Original language | English |
|---|---|
| Pages (from-to) | 1522-1527 |
| Number of pages | 6 |
| Journal | Physics Procedia |
| Volume | 36 |
| DOIs | |
| Publication status | Published - Jan 1 2012 |
| Externally published | Yes |
| Event | Superconductivity Centennial Conference, SCC 2011 - The Hague, Netherlands Duration: Sep 18 2011 → Sep 23 2011 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
AC loss properties of laser-scribed multi-filamentary GdBCO coated conductors with artificial pinning centres. / Hayashia, Takuya; Nakamura, Sosuke; Iwakuma, Masataka; Funaki, Kazuo; Ibi, Akira; Yamada, Yutaka; Izumi, Teruo; Shiohara, Yuh; Saitoh, Takashi; Iijima, Yasuhiro.
In: Physics Procedia, Vol. 36, 01.01.2012, p. 1522-1527.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - AC loss properties of laser-scribed multi-filamentary GdBCO coated conductors with artificial pinning centres
AU - Hayashia, Takuya
AU - Nakamura, Sosuke
AU - Iwakuma, Masataka
AU - Funaki, Kazuo
AU - Ibi, Akira
AU - Yamada, Yutaka
AU - Izumi, Teruo
AU - Shiohara, Yuh
AU - Saitoh, Takashi
AU - Iijima, Yasuhiro
PY - 2012/1/1
Y1 - 2012/1/1
N2 - RE1Ba2Cu3O7-∂ (RE: Rare Earth, Gd, Y and so on) coated conductors have a large aspect ratio and also anisotropy in critical current density. For practical application of REBCO tapes, we evaluated JC and ac loss properties in a wide range of temperature and magnetic field. The induced ac losses due to the perpendicular magnetic field to a tape face are considerably huge. Therefore, in case that REBCO coated conductors are applied electric power machines and devices, ac loss induced in the windings should amount to a great part of the total heat load. We proposed an ac loss reduction method, which is combined with a laser scribing technique and a special winding process into a multifilamentary structure. Additionally, we are trying to enhance critical current density JC, by doping artificial pinning centre. In this study we investigated the ac loss properties of multi-filament structural GdBCO tapes with BZO nanolods as artificial pinning centers. We measured ac losses of 5, 10, 20-filament GdBCO tapes by using a saddle-shaped pickup coil. Consequently we confirmed the ac loss decreased in inverse proportion to the number of filaments even in the GdBCO tapes with enhanced JC by introducing artificial pinning centers.
AB - RE1Ba2Cu3O7-∂ (RE: Rare Earth, Gd, Y and so on) coated conductors have a large aspect ratio and also anisotropy in critical current density. For practical application of REBCO tapes, we evaluated JC and ac loss properties in a wide range of temperature and magnetic field. The induced ac losses due to the perpendicular magnetic field to a tape face are considerably huge. Therefore, in case that REBCO coated conductors are applied electric power machines and devices, ac loss induced in the windings should amount to a great part of the total heat load. We proposed an ac loss reduction method, which is combined with a laser scribing technique and a special winding process into a multifilamentary structure. Additionally, we are trying to enhance critical current density JC, by doping artificial pinning centre. In this study we investigated the ac loss properties of multi-filament structural GdBCO tapes with BZO nanolods as artificial pinning centers. We measured ac losses of 5, 10, 20-filament GdBCO tapes by using a saddle-shaped pickup coil. Consequently we confirmed the ac loss decreased in inverse proportion to the number of filaments even in the GdBCO tapes with enhanced JC by introducing artificial pinning centers.
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U2 - 10.1016/j.phpro.2012.06.204
DO - 10.1016/j.phpro.2012.06.204
M3 - Conference article
AN - SCOPUS:84923290555
VL - 36
SP - 1522
EP - 1527
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3892
ER -