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Showing 1 to 18 of 18 for “"coated conductors"”.
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Grain boundaries in coated conductors
… followed the discovery of high-temperature superconductors in 1986 was short-lived, as it became clear that their current carrying capacity (the critical current density Jc) was limited by grain boundaries (GBs). In order to reduce their detrimental effects coated conductors have been developed, …
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Grain boundary networks in RABiTS based YBa2Cu3O7[-delta] coated conductors
… current limitations found in YBa2Cu3O7[-delta] coated conductors prepared by the "rolling assisted biaxially textured substrate" (RABiTS) approach. For this purpose a buffer layer system composed of CeO2 and yttria-stabilised zirconia, and subsequently a YBa2Cu3O7[-delta] film were …
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Development of (Re)BaCuO Coated Conductors by Liquid Phase Epitaxy
Since the discovery of high-temperature superconductors, there has been a worldwide effort towards the development of processes for fabricating coated conductors for power applications. Most of these processes are based on vapour phase deposition techniques that have relatively low growth rates. A …
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Increased critical current density in rapidly grown RE-based cuprate superconducting coated conductors
Coated conductor wire using superconducting Rare-earth-Ba2Cu3O7-x is a technology capable of producing many exciting new and improved devices, with applications from MRI magnets to fusion power plants. However, to be successfully commercialised the cost of performance of the wires must be improved. …
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Structural and Electromagnetic Study of Heavily Doped ZR-Added REBCO Coated Conductors Fabricated by Reel-To-Reel MOCVD
High Temperature Superconducting (HTS) Coated Conductors (CCs) based on epitaxial REBa2Cu3O7-δ (REBCO, RE = rare earth) films with superior mechanical strength and high current carrying capacity are being developed for various large-scale electric power and magnetic applications. The critical …
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Microstructural Development and Superconducting Parameters of the YBa2Cu3O7-delta Coated Conductor
A coated conductor is generally fabricated by depositing a high Tc superconducting layer onto a flexible metallic substrate, using intermediate buffer layers to prevent chemical interaction. In order for the superconductor to be capable of carrying a high current density, its grains must have good …
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The effect of irradiation temperature on REBCO Jc degradation and implications for fusion magnets
Recent advances in high temperature superconductors (HTS) have opened up a new parameter space for the design of tokamak fusion pilot plants. While previously the maximum on-axis field in a superconducting tokamak was limited to ~6 T, HTS allows tokamaks to be designed with much higher on-axis …
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Strombegrenzende Mechanismen YBa2Cu3O7-[delta]-Dünnschichten und -Quasimultilagen
… Ni tapes. The critical current density of coated conductors is limited by small-angle grain boundaries in low magnetic fields, but by the intra-grain pinning properties in higher magnetic fields. Accordingly, these investigations are divided into two parts: In the first part, the limitation …
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Tailoring Superconductor and SOFC Structures for Power Applications
High temperature superconductors (HTS) and solid oxide fuel cells (SOFCs) both offer the possibility for dramatic improvements in efficiency in power applications such as generation, transmission and use of electrical energy. However, production costs and energy losses prohibit widespread adoption …
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Enhanced High-Field Flux Pinning in YBa2Cu3O7-x Thin Films Through Engineering of Ba2YTaO6 Artificial Pinning Centres
Commercial coated-conductor tapes based on the high-temperature superconductor YBa2Cu3O7 are considered essential for fabricating high-field compact fusion magnets. An essential aspect in the development of these magnets is an understanding of the most effective pinning centre materials at low …
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The Electronic Properties of Thin Film YBa2Cu3O7 Low Angle Grain Boundaries
… currents in the latest biaxially textured ‘coated conductors’ are now limited by 2D networks of low angle grain boundaries (LAGBs) with misorientation θm = 1 - 10°. In order to understand and optimise current transfer in these materials it is essential to elucidate the electromagnetic …
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Flux Pumping for No-Insulation High Temperature Superconducting REBCO Magnets
… lossless superconducting joints for HTS REBCO coated conductors are not available. To maintain a stable magnetic field for the HTS REBCO magnet, an external power supply is required via a bulky no-superconducting copper current leads. The copper current leads consume a huge amount of …
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A high-current and low-loss high-temperature superconducting cable for nuclear fusion applications
… applying high-temperature superconducting (HTS) coated conductors (CCs) to AC energy applications, including motors, power transmission, and fusion magnets, is their relatively high AC loss. In this dissertation, a novel high-current and low-loss HTS cable, Patterned superconductors for AC loss …
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Transport AC loss in high temperature superconducting coils
… is modelled as a 2D stack of superconducting coated conductors. The model is also modified to allow the nclusion of a magnetic substrate, which is present in some commercially available HTS wire. The analysis raises a number of interesting points regarding the use of superconductors with …
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Electromagnetic-thermal Characteristics of Conductor on Round Core (CORC) Cables
… superconducting (2G HTS) tapes, known as coated conductors (HTS-CCs), showing high current density in a high magnetic field, are already commercially available. As a cabling concept, Conductor on Round Core (CORC) cables consisting of a cylindrical former and multiple helically bent …
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Investigation of High-Temperature Superconducting Trapped Field Magnets in a Superconducting Motor
… and thermal characteristics of HTS coated conductors (CCs), through experimental results, ensuring the accuracy and reliability of the model. The validated model was then utilised to examine the electro-mechanical performance of the studied HTS machine, employing TFSs as rotor …
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Study of high temperature superconducting tapes for applications in high-field magnets and power systems
… compressive strain of RE − Ba2Cu3O7−σ (REBCO) coated conductors, the CORC® cable is designed as a powerful superconducting cable wound with REBCO coated conductor tapes in multiple layers which can meet these challenging requirements. The Conductor on Round Core (CORC) cable is one important …
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Chemisch deponierte Schichtsysteme zur Realisierung von YBa2Cu3O7−d-Bandleitern
Die vorliegende Arbeit beschäftigt sich mit der Entwicklung neuer Schichtsysteme für die Realisierung biaxial texturierter hochtemperatursupraleitender Bandleiter. Bisher sind eine Vielzahl von Bandleiterarchitekturen bekannt, die sowohl durch physikalische Depositionsmethoden als auch mittels …