Cabling Method for High Current Conductors Made of HTS Tapes

Takayasu, M.; Chiesa, L.; Bromberg, L.; Minervini, J.V.

doi:10.1109/tasc.2010.2094176

Cited by 78 publications

(53 citation statements)

References 4 publications

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“…This effect was previously demonstrated for a 4-tape REBCO cable, which had indicated about 25% performance degradation [14], [15]. We have investigated a cable critical current degradation due to non-uniform termination resistances for a 40-tape cable, based on the 1.16 m TSTC conductor tested at KIT.…”

Section: ) Termination Resistance Effectsmentioning

confidence: 76%

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Takayasu

Chiesa

Allen

et al. 2016

IEEE Trans. Appl. Supercond.

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High magnetic field performance of a 40-tape Twisted Stacked-Tape Cable (TSTC) conductor made of 4 mm width, 0.1 mm thick REBCO tapes was successfully tested. The critical current was 6.0 kA with the n-value of 35 at 4.2 K with a background field of 17 T. No-cyclic load effect was observed between 10 T and 17 T with the maximum Lorentz load of 102 kN/m. Various issues such as sample length, non-uniformity of termination resistances, soldered joint of a coated tape cable with regards to a TSTC conductor are discussed. Large-scale conductor designs of various scalable TSTC conductors are discussed taking into account current densities and stabilizers.

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Section: ) Termination Resistance Effectsmentioning

confidence: 76%

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Takayasu

Chiesa

Allen

et al. 2016

IEEE Trans. Appl. Supercond.

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“…These cables are unsuitable for use in high-field magnets, or in compact power cable systems due to their low current density and limited flexibility. current configuration was developed by MIT [30,31]. The Twisted Stacked Tape Cable (TSTC) contains several coated conductors stacked on top of each other, after which the bundle is twisted (figure 10).…”

Section: Other Rebco Cable Approachesmentioning

confidence: 99%

Status of CORC^® cables and wires for use in high-field magnets and power systems a decade after their introduction

Laan

Weiss

McRae

2019

Supercond. Sci. Technol.

185

118

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High-field, low-inductance superconducting magnets in particle accelerators and fusion machines require high operating currents, often in combination with high current densities and for some applications conductor bending radii of less than 50 mm. These requirements form a major challenge for magnet conductors consisting of high-temperature superconductors, which are required for reaching magnetic fields exceeding 20 T, or allowing for operating temperatures above 20 K. The high tolerance of RE-Ba 2 Cu 3 O 7−δ coated conductors to axial tensile and compressive strain has led to the concept of CORC ® cables in an attempt to develop a round and mechanically as well as electrically isotropic, high-performance conductor that would meet these challenging requirements. This review article will outline how CORC ® cables evolved from a concept into a practical and robust conductor for high-field magnets and compact superconducting power cables. This review article provides an extensive overview of how CORC ® cable technology has overcome most of the challenges associated with its use in large magnets for fusion, particle accelerators and in helium gas cooled power and fault current limiting cables, while further development is ongoing that will push the CORC ® cable technology to even higher performance levels.

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“…These magnets thus require many REBCO tapes to be bundled into a high-current cable. Several approaches to cable REBCO coated conductors have been demonstrated, such as Roebel cables [15,16], the Twisted Stacked Tape Cable [17,18], and Conductor on Round Core (CORC ® ) cables and wires [19][20][21]. CORC ® magnet cables and wires have demonstrated the ability to carry currents between 5-10 kA in background fields as high as 20 T [22,23], while allowing for a J e extrapolated to 20 T as high as 423 A mm −2 [24].…”

Section: Introductionmentioning

confidence: 99%

Effect of monotonic and cyclic axial tensile stress on the performance of superconducting CORC^® wires

Laan

McRae

Weiss

2019

Supercond. Sci. Technol.

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High-current superconducting CORC ® wires, wound from RE-Ba 2 Cu 3 O 7−δ (REBCO) coated conductors, are being developed for use in high-field magnets that would allow operation at magnetic fields exceeding 20 T. The combination of high engineering current densities and high magnetic fields results in large Lorentz forces acting on the CORC ® wire that could cause irreversible degradation to its performance. The effect of axial tensile stress on the critical current of CORC ® wires containing annealed solid copper formers has been measured in liquid nitrogen to determine the irreversible stress limit at which irreversible degradation occurs. The results show no significant change in critical current before the irreversible stress limit is reached, after which the critical current decreases irreversibly with applied stress. The irreversible stress limit as high as 177 MPa depends on the yield strength of the former, the number of superconducting tapes wound into the CORC ® wire and the angle at which the tapes are wound. Although the irreversible stress limit of CORC ® wires is lower than a rudimentary rule of mixtures estimation would suggest, the irreversible strain limit, as high as 0.85%, exceeds that of single REBCO tapes. Both effects are likely the result of the helical fashion in which the REBCO tapes are wound into CORC ® wires. The performance of CORC ® wires was also measured as a function of axial tensile stress fatigue cycling in liquid nitrogen. No significant performance degradation was measured up to 100 000 cycles as long as the peak stress remained below the irreversible stress limit. Only once the peak stress was increased significantly above the irreversible stress limit would the critical current suddenly decrease with stress cycles. The results indicate that CORC ® wires have matured into extremely robust high-current magnet conductors capable of withstanding high levels of axial tensile stress and strain. The irreversible stress limit of CORC ® wires could be increased further by using stronger formers and winding the REBCO tapes at comparable angles, while the irreversible strain limit could potentially be increased by tailoring the winding angle of the REBCO tapes, making CORC ® wires one of the strongest and most elastic high-current superconducting magnet conductors available.

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Cabling Method for High Current Conductors Made of HTS Tapes

Cited by 78 publications

References 4 publications

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Status of CORC^® cables and wires for use in high-field magnets and power systems a decade after their introduction

Effect of monotonic and cyclic axial tensile stress on the performance of superconducting CORC^® wires

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Cabling Method for High Current Conductors Made of HTS Tapes

Cited by 78 publications

References 4 publications

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Present Status and Recent Developments of the Twisted Stacked-Tape Cable Conductor

Status of CORC® cables and wires for use in high-field magnets and power systems a decade after their introduction

Effect of monotonic and cyclic axial tensile stress on the performance of superconducting CORC® wires

Contact Info

Product

Resources

About

Status of CORC^® cables and wires for use in high-field magnets and power systems a decade after their introduction

Effect of monotonic and cyclic axial tensile stress on the performance of superconducting CORC^® wires