Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.ISS 2014 Funabori Tokyo
Creatingfor the Future
The Latest Trends ofMOD REBCO SuperconductingCoated Conductors in SWCC
SWCC SHOWA CABLE SYSTEMS CO., LTD.
Tsutomu Koizumi
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 2ISS 2014 Funabori Tokyo
Creatingfor the Future
SWCC Showa Cable Systems Co., Ltd.
R. Hironaga, Y. Takahashi, K. Kimura,T. Nakamura, K. Takahashi, K. Shiohara,Y. Hikichi, M. Minowa,K. Adachi, T. Nakanishi, N. Mido,T. Hasegawa
Co workers
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 3ISS 2014 Funabori Tokyo
Creatingfor the Future
This work was supported byISTEC-SRLJapan Fine Ceramics CenterKyusyu UniversityTokai university
Acknowledgement
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Materials & Power Applications of Coated Conductors.
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 4ISS 2014 Funabori Tokyo
Creatingfor the FutureToday’s topics
1) Introduction
2) MOD REBCO coated conductor in SWCC.i) Development of in-house substrate for MOD.ii) Mass production of YBCO coated conductor.
3) Application of REBCO coated conductorin SWCC
i) Development of compact superconducting current lead.
ii) Development of High-Tc superconducting power cable.
4) Summary
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 5ISS 2014 Funabori Tokyo
Creatingfor the FutureIntroduction
REBCO coated conductors have developed using the metal-organic deposition process including trifluoroacetates so called TFA-MOD method since 1999.
Moreover, we have used a reel-to-reel process for calcination process and batch-type furnace for crystallization process.
In 2008, we successfully developed 500m-class YBCO coated conductors which had the critical current values of 310 A/cm-width at 77 K in self field.
Moreover, we successfully developed a way for introducing artificial pinning centers and fabricated 100m-class REBCO withartificial pinning centers. We named “nPAD-YBCO®”. nPAD-YBCO® means nano-Particle Artificial-pinning-centerDistributed YBCO.
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 6ISS 2014 Funabori Tokyo
Creatingfor the FutureMOD REBCO coated conductor
Ni basedalloy
MgO
CeO2
Al2O3 etc
LaMnO3
REBCO
Ag
RF Sputtering
TFA-MOD
DC Sputtering
Highlyin-plane textured
CrystallizationCrystallization
CalcinationCalcination
Architecture ofMOD REBCO coated conductor RF SputteringRF Sputtering
Batch process
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 7ISS 2014 Funabori Tokyo
Creatingfor the FutureToday’s topics
1) Introduction
2) MOD REBCO coated conductor in SWCC.i) Development of in-house substrate for MOD.ii) Mass production of YBCO coated conductor.
3) Application of REBCO coated conductorin SWCC
i) Development of compact superconducting current lead.
ii) Development of High-Tc superconducting power cable.
4) Summary
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 8ISS 2014 Funabori Tokyo
Creatingfor the Future100m-class YBCO CC using in-house substrate
0
100
200
300
400
500
0 20 40 60 80 100 120Cri
tica
l cur
rent
(A
/cm
-wid
th)
Position (m)
YBCO film thickness: 1.4µmTape width: 5mm
Jc=2.5MA/cm2
@77K
We successfully developed in-house substrate.We successfully developed in-house substrate.
WTP-20 Y. Takahashi et. al.
⊿ CeO2 = 4°
@77K, Self field
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 9ISS 2014 Funabori Tokyo
Creatingfor the FutureToday’s topics
1) Introduction
2) MOD REBCO coated conductor in SWCC.i) Development of in-house substrate for MOD.ii) Mass production of YBCO coated conductor.
3) Application of REBCO coated conductorin SWCC
i) Development of compact superconducting current lead.
ii) Development of High-Tc superconducting power cable.
4) Summary
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 10ISS 2014 Funabori Tokyo
Creatingfor the Future
0
100
200
300
400
500
600
0 10 20 30 40 50 60 70 80 90 100
Piece length: 125 m(Total length: 12,500 m)
Cri
tica
l cur
rent
(A
/cm
-wid
th)
Production number
@77K, Self field
Tape width: 4~5mm
Yield = 85%
Production Resultsof 100m-class YBCO CC in 2014
We fabricated hundred pieces of 100m-long coated conductor.This yield was 80% more.We fabricated hundred pieces of 100m-long coated conductor.
This yield was 80% more.
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 11ISS 2014 Funabori Tokyo
Creatingfor the FutureToday’s topics
1) Introduction
2) MOD REBCO coated conductor in SWCC.i) Development of in-house substrate for MOD.ii) Mass production of YBCO coated conductor.
3) Application of REBCO coated conductorin SWCC
i) Development of compact superconducting current lead.
ii) Development of High-Tc superconducting power cable.
4) Summary
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 12ISS 2014 Funabori Tokyo
Creatingfor the FutureHigh Tc Superconducting current lead
220L×42W×14T
≦ 0.15W/piece
1500A
1500A class
220L×14W×14T
≦ 0.06W/piece
500A
500A class
220L×14W×14TSize (mm)
GFRPSupporting case
≦ 0.03W/pieceHeat leakage (@77K-4.2K)
77K-4.2KTemperature range (K)
250ARated Current(@77K,self field)
250A classParameters
ProblemSolving
Lineup of nPAD-YBCO® current leads
Bi-2223 Bulk Current lead nPAD-YBCO® Current lead
NEW
CompactLow heat leakageHigh mechanical performance
Widely available in various superconducting devices!Widely available in various superconducting devices!
Easy brokenExpensive
nPAD-YBCO®: nano-Particle Artificial-pinning-center Distributed YBCO
SAP-74 K. Takahashi et. al.
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 13ISS 2014 Funabori Tokyo
Creatingfor the Future
0
60
120
180
240
300
0 60 120 180 240
nPAD-YBCO® current lead
BI180
90
Angle (deg.)
Cri
tica
l cur
rent
(A
/cm
-wid
th) @77K, 0.5T
Angular dependence of critical current
REBCO film thickness: 1.4µm
In the case of used YBCO CC, we can not make a compact current lead. Because used many long tapes for overcome heart leakage dew to a YBCO CC was low Ic in a magnetic field.
However, in order to be able to develop nPAD-YBCO®, we successfully developed a compact current lead.
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 14ISS 2014 Funabori Tokyo
Creatingfor the Future
0
200
400
600
800
0
1
2
3
4
0 10 20 30 40
Cooling cycle testof nPAD-YBCO® Current Lead
Cooling cycles:300K 77KC
riti
cal c
urre
nt (
A/c
m-w
idth
)
Cooling cycle number
@77K, Self field Con
tact
res
ista
nce
(x 1
0-7
)
Rc
Contact resistance LN2
We carried out cooling cycle test for the 500A class current read.
The measurement of Iccarried out until 40 cycles every 10 cycles .
As this result, Ic and Rc of the current lead were not damage until 40 cycles.
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 15ISS 2014 Funabori Tokyo
Creatingfor the FutureToday’s topics
1) Introduction
2) MOD REBCO coated conductor in SWCC.i) Development of in-house substrate for MOD.ii) Mass production of YBCO coated conductor.
3) Application of REBCO coated conductorin SWCC
i) Development of compact superconducting current lead.
ii) Development of High-Tc superconducting power cable.
4) Summary
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 16ISS 2014 Funabori Tokyo
Creatingfor the FutureDevelopment of REBCO Power Cable
Now, under several tests.
0.5Iop/Ic
100mLength
(Current PJ goal)
YBCO (MOD)HTS material
30mmDiameter of conductor
130mmDiameter of cable
3Phases
70MWPower
CoaxialGeometry
35kVVoltage
ACType
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 17ISS 2014 Funabori Tokyo
Creatingfor the Future
We successfully developed in-house substrate.
We fabricated hundred pieces of 100m-long coatedconductor. This yield was 80% more.
We successfully developed compact superconducting current lead using REBCO coated conductor.
We started High-Tc superconducting power cable development.
Summary
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 18ISS 2014 Funabori Tokyo
Creatingfor the Future
2014
commercialization
NationalPJ
20162015201320122011
Summary
Commercialization of YBCO tape
Development of REBCO power lead
Development of HTS power cable
Standardization PJ for High-Tc power cable
Development of in-house substrate
Commercialization of YBCO Power lead
Savingenergy PJ
M-PACC
High-Tc Magnet PJ
Commercialization ofnPAD-YBCO®
Development of business plans toward commercialization
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.
Copyright © 2014 SWCC SHOWA CABLE SYSTEMS CO., LTD.26-Nov-2014 19ISS 2014 Funabori Tokyo
Creatingfor the Future
END
IEEE/CSC SUPERCONDUCTIVITY NEWS FORUM (global edition) January 2015. Invited Presentation WT-9-INV given at ISS 2014, Tokyo, November 25 - 27, 2014.