superior performance. powerful technology.
SuperPower Inc. is a subsidiary of Furukawa Electric Co. Ltd.
Progress of 2G HTS Wire Development
at SuperPower
Ryusuke Nakasaki1, P. Brownsey1, A. Sundaram1, Y. Zhang1, D. Hazelton1,
H. Sakamoto1, 2,and T. Fukushima1
(1SuperPower Inc., 2Furukawa Electric Co., Ltd.)
ASC 2016 Denver, USA 05 September 2016
1MOr2A-03
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Outline
• Architecture and line-up of 2G HTS wire in SuperPower
• Conductor requirements for various applications
• Latest performance of 2G HTS wire in SuperPower
• New development in SuperPower
• Summary
2
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
2G HTS wire production at SuperPower IBAD-MOCVD based REBCO wire on Hastelloy substrate
3
• REBCO formulation:
– AP (Advanced Pinning) – with enhanced in-field performance for B//c,
targeting at coil applications such as high-field magnets, SMES,
motors/generators
– CF (Cable Formulation) – for cables, transformers
• Ic(77K, s.f.)/12mm = 400-600A, piece length = ~500m.
• Variations in width (2-12mm), substrate thickness (30, 50 or 100µm)
Ag thickness (1-5µm), Cu thickness (10-115µm), and insulation
• Bonding conductors : 2x2mm, 2x4mm, 2x12mm (face to face / back to back )
• Product lineup is expanding
Cross-sectional image of a Cu-plated wire
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Demanding applications and conductor requirements
• Our wires are being utilized for device/equipment development for
many applications, including high-field magnets, accelerator
magnets, fusion magnets, SMES, motors/generators, SFCL, etc.
• Conductor requirements
– High Ic(B,T,) performance
– Uniformity along length/across width
– Robustness
– Long piece length
– Thinner substrate, Thicker substrate
• Continuous development and improvement driven by customers
– Innovative conductor design
– Processing optimization and control
– In-line inspections
– Property and quality measurements
• Higher performance + higher yield lower cost/price
4
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Outline
• Architecture and line-up of 2G HTS wire in SuperPower
• Conductor requirements for various applications
• Latest performance of 2G HTS wire in SuperPower
• New development in SuperPower
• Summary
5
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Ic performance of Enhanced A.P wire at 77K/s.f
6
• Magnetic, non-contact measurement
• High special resolution, high speed, reel-to-reel
• Monitoring Ic at multiple production points after MOCVD
• Capable of quantitative 2D uniformity inspection
0m 300m 500m 400m 200m 100m
200A
400A
600A
12mmW
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Ic performance of Enhanced A.P wire at 77K/s.f
7
• Transport measurement by every 5m, with 40µm copper.
• Extend the piece length up to 500m
0
20
40
60
80
100
120
140
160
180
200
0 100 200 300 400 500
Ic [
A]
at 4
mm
Piece length [m]
500m /4mmW
Ic : production A Ic : production B n-value : production A n-value : production B
1 µV/cm
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
1
10
100
1000
1 10
Ic [
A]
at
4m
mW
B [T]
77.3K
65K
30K
20K
10K
4.2K
The Performance of Enhanced A.P wire
8
B//c 4mm
• Enhanced A.P wire shows high in-field performance
Measured by Tohoku university
Ic = 190.9A at 77K
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016 9
Electromechanical property - Ic under tension at 77K
5MOr1A-05 : Mechanical and electromechanical property study of 2G HTS wires
made on 30µm thick Hastelloy substrate
New Process
550MPa
Ic/Ic(0)=0.95
A.P
Enhanced A.P
SCS12050 with 40µm copper
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Outline
• Architecture and line-up of 2G HTS wire in SuperPower
• Conductor requirements for various applications
• Latest performance of 2G HTS wire in SuperPower
• New development in SuperPower
• Summary
10
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Development progress of 30µm substrate
11
• Base performance of 30µm substrates are almost same as 50µm.
0
20
40
60
80
100
120
140
160
0 20 40 60 80 100 120 140 160
I c(A
) /
N-v
alu
e
Tape Length (m)
SCS4030, Ic SCS3030, Ic SCS2030, Ic
SCS4030, n-value SCS3030, n-value SCS2030, n-value
SCS2030, 75 A
SCS3030, 110A
SCS4030, 144 A
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
100
1000
1 10
Ic [
A]
at
4.1
K
Magnetic field [T]
30µm 50µm 100µm 38µm
Ic performance on various substrates
12
• The Ic performances at 4.1K are comparable on various substrates.
• 30µm substrate is still in developing.
B//c 4mm
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
16 superpower tapes wound helically • Copper core: 2.2 mm diameter • 2 mm wide tapes with 30 μm substrate • 6 mm twist pitch with partially transposed
tapes for low AC loss • Wire outer diameter: 3 mm • Terminal diameter: 6.35 mm • Nominal wire Ic: > 1,000 A (77 K)
Applications • High field magnets • Accelerator magnets • Fusion magnets • High power density transmission
Value desired for
high-field research
magnets
Value desired for
accelerator magnets
such as CCT dipoles
High magnetic field critical current density obtainable by increasing wire diameter and decreasing substrate thickness
CORC®
Robust, Flexible, Compact.
CORC®
2LPo2D-01 : Enhanced flexibility of round HTS CORC® wires for high-field magnet applications
4SPOr3A-04 : Improved current density and flexibility in CORC® magnet cables and wires
CORC® wires using SuperPower tapes
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Bonding conductors
14
• Bonding conductor : Face to Face, 2 x 4mm, total thickness ~200µm
• No degradation after 10 times thermal cycles
-1.00E-04
4.00E-04
9.00E-04
1.40E-03
1.90E-03
2.40E-03
2.90E-03
3.40E-03
3.90E-03
0 10 20 30 40 50 60 70 80 90 100 110
VO
LTA
GE
(V)
CURRENT (A)
WET WIND STABILIZED CHART FTF2X4-002 17M COIL [ 59.8 Turns ]WET WIND TC1 [ 98.9 Ic 18.3 NValue ]
WET WIND TC2-10 [96-98A Ic 17-20 NValue ]
FTF2X4-002 WET WINDSTABILIZED DATAWET WIND TC 2
WET WIND TC 3
WET WIND TC 4
WET WIND TC 5
WET WIND TC 6
WET WIND TC 7
WET WIND TC 8
WET WIND TC 9
WET WIND TC 101uV/cm
1.70E-03
4LPo2K-06 : Development of 2G HTS conductor for a FCL Transformer
Hastelloy
YBCO
Solder
Cu
50µm Cu
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016
Summary
15
• Enhanced A.P wire achieved a high performance with
~300A at 4.2K/17T, 4mmW.
• Keep the same mechanical property on enhanced A.P
wire.
• The Ic performance at 4.1K are comparable on various
substrates. 30 µm substrate is still in developing.
• No degradation on bonding conductor.
1MOr2A-03 ASC_2016 Denver 05 September / 2016
All Rights Reserved. Copyright SuperPower® Inc. 2016 16
END
superior performance. powerful technology.
Thank you for your attention
http://www.superpower-inc.com/
SuperPower Inc. 450 Duane Ave. Schenectady, NY 12304 USA
Tel: (518) 346-1414
Fax: (518) 346-6080