Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant
Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant

Author: Bayer, Christoph M.

Publisher: KIT Scientific Publishing

Published: 2017-02-16

Total Pages: 222

ISBN-13: 373150605X

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Nuclear fusion is a key technology to satisfy the basic demand for electric energy sustainably. The official EUROfusion schedule foresees a first industrial DEMOnstration Fusion Power Plant for 2050. In this work several high temperature superconductor sub-size cables are investigated for their applicability in large scale DEMO toroidal field coils. Main focus lies on the electromechanical stability under the influence of high Lorentz forces at peak magnetic fields of up to 12 T.

Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant
Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant

Author: Christoph M Bayer

Publisher:

Published: 2020-10-09

Total Pages: 214

ISBN-13: 9781013281006

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Nuclear fusion is a key technology to satisfy the basic demand for electric energy sustainably. The official EUROfusion schedule foresees a first industrial DEMOnstration Fusion Power Plant for 2050. In this work several high temperature superconductor sub-size cables are investigated for their applicability in large scale DEMO toroidal field coils. Main focus lies on the electromechanical stability under the influence of high Lorentz forces at peak magnetic fields of up to 12 T. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications
AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications

Author: Godfrin, Aurélien

Publisher: KIT Scientific Publishing

Published: 2022-05-10

Total Pages: 146

ISBN-13: 3731510960

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This work focuses on two topics. The first is the investigation of producing filaments on copper-stabilized coated conductors, with striations made after or before electroplating the tape. The second topic is the applicability of the striations for reducing the AC losses of cables, in particular the CORC® and RACC cables, which are made with high-temperature superconductor (HTS) striated tapes.

Development of high-temperature superconductor cables for high direct current applications
Development of high-temperature superconductor cables for high direct current applications

Author: Preuß, Alan

Publisher: KIT Scientific Publishing

Published: 2021-01-14

Total Pages: 194

ISBN-13: 3731510413

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A design process for HTS DC cables was developed for high current applications. Based on the design process, a 35 kA HTS DC cable demonstrator was developed. The superconducting elements of the demonstrator were manufactured and tested individually at 77 K. Afterwards, the demonstrator cable was assembled and tested at 77 K. The assembled demonstrator successfully reached 35 kA at 77 K and self field conditions.

Characterisation of REBCO Roebel cables
Characterisation of REBCO Roebel cables

Author: Otten, Simon J.

Publisher: KIT Scientific Publishing

Published: 2019-05-13

Total Pages: 208

ISBN-13: 3731509040

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This work concerns the characterization of high-temperature superconducting REBCO Roebel cables for use in accelerator magnets. The effects of bending, torsion and compressive stress on the cable are investigated. The second part concerns the effect of inter-strand resistance on the cable properties. A two-parameter model is proposed to describe inter-strand connections and predict the effect on AC loss and stability. Additionally, the AC loss and stability are experimentally investigated.

Magnetization of High Temperature Superconducting Trapped-Field Magnets
Magnetization of High Temperature Superconducting Trapped-Field Magnets

Author: Zou, Shengnan

Publisher: KIT Scientific Publishing

Published: 2017-12-01

Total Pages: 174

ISBN-13: 3731507153

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High temperature superconducting (HTS) bulks and stacks of coated conductors can be magnetized to become trapped-field magnets that provide much stronger magnetic fields than those reachable with conventional permanent magnets. This work investigates the flux dynamics during the magnetization of HTS trapped-field magnets and proposes possible strategies to improve the trapped field produced by the pulsed field magnetization method that is promising for practical applications.

Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils
Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils

Author: Gyuráki, Roland

Publisher: KIT Scientific Publishing

Published: 2022-02-24

Total Pages: 194

ISBN-13: 3731510642

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This work presents the development and application of high-speed fluorescent thermal imaging for quench analysis in high-temperature superconductors (HTS). Using a fluorescent coating, with a temperature-dependent light emission, temperature changes can be calculated over 2D surfaces. The technique uncovered peculiar transient effects in novel HTS tape architectures and also helped to verify and better understand hot spot development in both insulated and non-insulated, HTS–wound pancake coils.

Evaluation of the Use of Superconducting 380 kV Cable
Evaluation of the Use of Superconducting 380 kV Cable

Author: Kottonau, Dustin

Publisher: KIT Scientific Publishing

Published: 2020-11-03

Total Pages: 138

ISBN-13: 373151026X

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Diese Studie führt eine Auslegung von supraleitenden Kabeln für die Anwendung im 380-kV-Drehstromnetz durch und erläutert allgemeine Aspekte des Einsatzes solcher Kabel im Höchstspannungsnetz. Dabei vergleicht sie die Supraleitungstechnologie unter vielen verschiedenen Kriterien mit anderen Leitungstechnologien. - This study describes the design of superconducting cables for use in the 380 kV three-phase network and explains general aspects of the use of such cables in the extra-high voltage grid. It compares the superconducting technology with other line technologies under many different criteria.

Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications
Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications

Author: Buchholz, Alexander

Publisher: KIT Scientific Publishing

Published: 2022-07-27

Total Pages: 246

ISBN-13: 3731511940

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High-temperature superconductors have distinct advantages compared to conventional conductors. Below their critical temperature, superconductors have immeasurably low ohmic losses. To maintain the superconducting state, superconductors require constant cooling. This study aims at identifying the environmental impacts of the application of superconductors in future grid technologies such as superconducting power cables.

Electrical-field sensitive YBa₂Cu₃O₇₋ₓ detectors for real-time monitoring of picosecond THz pulses
Electrical-field sensitive YBa₂Cu₃O₇₋ₓ detectors for real-time monitoring of picosecond THz pulses

Author: Raasch, Juliane

Publisher: KIT Scientific Publishing

Published: 2019-04-23

Total Pages: 226

ISBN-13: 3731507862

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This work investigates the capability of the high-temperature superconductor YBCO to sense the evolution of the electrical field of THz pulses. A deposition process for ten unit-cell thin films and a sub-μm patterning process were developed to enable high sensitivities. The detector response to THz exctiations and its electrical-field sensitivity were studied. This unique characteristic allows for the investigation of instabilities of the THz radiation emitted from synchrotron storage rings.