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Simulations For The Optimization Of High Temperatur Superconductor Current Leads For Nuclear Fusion Applications
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Book Synopsis Simulations for the Optimization of High Temperatur Superconductor Current Leads for Nuclear Fusion Applications by : Enrico Rizzo
Download or read book Simulations for the Optimization of High Temperatur Superconductor Current Leads for Nuclear Fusion Applications written by Enrico Rizzo and published by . This book was released on 2020-10-09 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques based on numerical simulations have been applied to the analysis of the heat exchanger and the High Temperature Superconductor (HTS) module of HTS current leads. In the first case correlations have been derived for the meander flow geometry. In the second case steady state and transient thermal-electric models have been validated. Both techniques are used to design and optimize HTS current leads. The correlations were applied to a predictive analysis of the ITER HTS current leads. 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.
Book Synopsis Nuclear fusion, current lead, High Temperature Superconductor, Numerical simulation, Computational thermal Fluid Dynamics by : Rizzo, Enrico
Download or read book Nuclear fusion, current lead, High Temperature Superconductor, Numerical simulation, Computational thermal Fluid Dynamics written by Rizzo, Enrico and published by KIT Scientific Publishing. This book was released on 2014-03-27 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques based on numerical simulations have been applied to the analysis of the heat exchanger and the High Temperature Superconductor (HTS) module of HTS current leads. In the first case correlations have been derived for the meander flow geometry. In the second case steady state and transient thermal-electric models have been validated. Both techniques are used to design and optimize HTS current leads. The correlations were applied to a predictive analysis of the ITER HTS current leads.
Book Synopsis Development of high-temperature superconductor cables for high direct current applications by : Preuß, Alan
Download or read book Development of high-temperature superconductor cables for high direct current applications written by Preuß, Alan and published by KIT Scientific Publishing. This book was released on 2021-01-14 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant by : Bayer, Christoph M.
Download or read book Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant written by Bayer, Christoph M. and published by KIT Scientific Publishing. This book was released on 2017-02-16 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications by : Buchholz, Alexander
Download or read book Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications written by Buchholz, Alexander and published by KIT Scientific Publishing. This book was released on 2022-07-27 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Optimisation of hysteretic losses in high-temperature superconducting wires by : Krueger, Philipp
Download or read book Optimisation of hysteretic losses in high-temperature superconducting wires written by Krueger, Philipp and published by KIT Scientific Publishing. This book was released on 2014-05-15 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hysteretic loss optimisations through numerical simulation and subsequent experimental confirmation in transport current and background field measurements: ferromagnetic shielding and topological geometry optimisation is used to reduce energy dissipation in HTS coated conductor geometries. Single tapes and coil geometries are investigated. A 3D model capable of taking into account contact resistances is also presented for the Twisted Stacked Tape Conductor cable.
Book Synopsis Simulation and Optimization of High Temperature Superconductor Based Electromagnetic Systems by : Rajeev Das
Download or read book Simulation and Optimization of High Temperature Superconductor Based Electromagnetic Systems written by Rajeev Das and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The application of superconductors has always fascinated engineers because of their ability to provide very small resistive losses. Electric machines developed using superconductors provide the advantage of lower volume, and higher efficiency compared to conventional machines with similar specifications.High temperature superconductors (HTS) display the property of superconductivity at relatively higher temperatures compared to conventional superconductors. The use of HTS in electric machines provides substantial benefits in terms of less energy spent on refrigeration. In the field of computational electromagnetics, HTS in low frequency devices pose a few unique challenges that demand different approaches from the existing techniques applied in normal materials and conventional superconducting materials. This dissertation investigates the properties of HTS and then attempts to address various issues that arise while modeling and optimizing HTS based devices.The high degree of non-linearity in HTS presents significant difficulty for a solution to converge. This thesis models the behavior of HTS based low frequency examples, and suggests an approach that improves the convergence and reduces the computation time. In this effort, the successive substitution method and the Aitken approximation were used to develop the proposed algorithm.Subsequently, a multiphysics model of HTS based current leads was developed. To analyze the magnetic field problem, a 2D technique was considered, and the analysis of thermal behavior used a 3D approach. This study helped in determining the approach to solve both types of field problems associated with current leads and coupling the two sets of problems.Computational approaches to solve HTS based problems are still in their infancy and there is a shortage of data in this field. In order to generate more data, which could then be used in optimization or modeling of HTS devices, this work examined statistical methods that could be applied in such scenarios. In this thesis, aspects such as sampling methods of search space and methods to construct surrogates were researched; the use of Latin hypercube sampling (LHS) and Generalized Regression Neural Network (GRNN) are proposed.This dissertation ultimately considers a real world example of HTS current leads to address some of the challenges associated with them, specifically the reduction of heat leakage, the material used and the AC loss. To achieve these three goals, multi-objective optimization was considered and Differential Evolution (DE), a stochastic based technique was used to achieve the optimization goals. This facet of the thesis establishes the viability of stochastic methods to optimize systems with multiple goals to satisfy and having HTS a highly non-linear material in them, along with the possible objective functions and constraint relations." --
Book Synopsis Development of an Air Coil Superconducting Fault Current Limiter by : Naeckel, Oliver
Download or read book Development of an Air Coil Superconducting Fault Current Limiter written by Naeckel, Oliver and published by KIT Scientific Publishing. This book was released on 2016-11-14 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical power grids are the lifeline of technical infrastructure and fundamental for industry and modern lives. Fault Currents can disrupt the continuous supply of electrical energy, cause instable grid conditions and damage electrical equipment. The Air Coil Superconducting Fault Current Limiter (AC-SFCL) is a measure to effectively limit fault currents. The concept is investigated and proven experimentally by designing, building and successfully testing a 60 kV, 400 V, z = 6% demonstrator.
Book Synopsis AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications by : Godfrin, Aurélien
Download or read book AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications written by Godfrin, Aurélien and published by KIT Scientific Publishing. This book was released on 2022-05-10 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Magnetization of High Temperature Superconducting Trapped-Field Magnets by : Zou, Shengnan
Download or read book Magnetization of High Temperature Superconducting Trapped-Field Magnets written by Zou, Shengnan and published by KIT Scientific Publishing. This book was released on 2017-12-01 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Real-time imaging systems for superconducting nanowire single-photon detector arrays by : Hofherr, Matthias
Download or read book Real-time imaging systems for superconducting nanowire single-photon detector arrays written by Hofherr, Matthias and published by KIT Scientific Publishing. This book was released on 2014-09-26 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconducting nanowire singe-photon detectors (SNSPD) are promising detectors in the field of applications, where single-photon resolution is required like in quantum optics, spectroscopy or astronomy. These cryogenic detectors gain from a broad spectrum in the optical and infrared range and deliver low dark count rates and low jitter times. This thesis improves the understanding of the detection mechanism of SNSPDs and intodruces new and promising multi-pixel readout concepts.
Book Synopsis Design of a superconducting DC wind generator by : Liu, Yingzhen
Download or read book Design of a superconducting DC wind generator written by Liu, Yingzhen and published by KIT Scientific Publishing. This book was released on 2020-11-18 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The trend towards larger power ratings of wind turbines asks for innovations in power generation, which requires lower weight and cost, smaller size, higher efficiency and reliability. Due to high current-carrying capability and no DC losses of superconductors, a superconducting wind generator can have a superior power to weight/volume ratio with high efficiency. The work in the book mainly focuses on the feasibility study and design of a superconducting DC wind generator.
Book Synopsis Research and Technology Development on Superconducting Current Limiting Transformers by : Hellmann, Sebastian
Download or read book Research and Technology Development on Superconducting Current Limiting Transformers written by Hellmann, Sebastian and published by KIT Scientific Publishing. This book was released on 2020-01-10 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology and readout for scaling up superconducting nanowire single-photon detectors by : Knehr, Emanuel Marius
Download or read book Technology and readout for scaling up superconducting nanowire single-photon detectors written by Knehr, Emanuel Marius and published by KIT Scientific Publishing. This book was released on 2023-03-02 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents three advances to scale SNSPDs from few-pixel devices to large detector arrays: atomic layer deposition for the fabrication of uniform superconducting niobium nitride films of few-nanometer thickness, a frequency-multiplexing scheme to operate multiple detectors with a reduced number of lines, and the integration of SNSPDs with free-form polymer structures to achieve efficient optical coupling onto the active area of the detectors.
Book Synopsis Improving the Spectral Bandwidth of Superconducting Nanowire Single-Photon Detectors (SNSPDs) by : Charaev, Ilya
Download or read book Improving the Spectral Bandwidth of Superconducting Nanowire Single-Photon Detectors (SNSPDs) written by Charaev, Ilya and published by KIT Scientific Publishing. This book was released on 2018-07-31 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a comprehensive investigation of the influence of geometry-dependent factors on performance metrics of superconducting single-photon detectors. With fundamental knowledge, main investigations are focused to extend the spectral bandwidth and to enhance the detection efficiency, especially in infrared range. The developed technology of single-spiral detectors and unconventional electron-beam lithography allows to improve the performance of superconducting detectors.
Book Synopsis Applications of High Temperature Superconductors to Electric Power Equipment by : Swarn S. Kalsi
Download or read book Applications of High Temperature Superconductors to Electric Power Equipment written by Swarn S. Kalsi and published by John Wiley & Sons. This book was released on 2011-04-18 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only one-stop reference to design, analysis, and manufacturing concepts for power devices utilizing HTS. High temperature superconductors (HTS) have been used for building many devices for electric grids worldwide and for large ship propulsion motors for the U.S. Navy. And yet, there has been no single source discussing theory and design issues relating to power applications of HTS—until now. This book provides design and analysis for various devices and includes examples of devices built over the last decade. Starting with a complete overview of HTS, the subsequent chapters are dedicated to specific devices: cooling and thermal insulation systems; rotating AC and DC machines; transformers; fault current limiters; power cables; and Maglev transport. As applicable, each chapter provides a history of the device, principles, configuration, design and design challenges, prototypes, and manufacturing issues, with each ending with a summary of the material covered. The design analysis and design examples provide critical insight for readers to successfully design their own devices. Original equipment manufacturer (OEM) designers, industry and utilities users, universities and defense services research groups, and senior/postgraduate engineering students and instructors will rely on this resource. "HTS technology reduces electric losses and increases the efficiency of power equipment. This book by Swarn Kalsi, a leading expert on the HTS subject, provides a survey of the HTS technology and the design rules, performance analyses, and manufacturing concepts for power application-related devices. It compares conventional and HTS technology approaches for device design and provides significant examples of devices utilizing the HTS technology today. The book is useful for a broad spectrum of professionals worldwide: students, teaching staff, and OEM designers as well as users in industry and electric utilities." —Professor Dr. Rolf Hellinger, Research and Technologies Corporate Technology, Siemens AG
Book Synopsis Superconducting integrated THz receiver by : Merker, Michael
Download or read book Superconducting integrated THz receiver written by Merker, Michael and published by KIT Scientific Publishing. This book was released on 2019-12-17 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
