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A Theoretical And Experimental Study Of The Ac Losses Of A High Field Superconductor And The Implications For Power Applications
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Book Synopsis A Theoretical and Experimental Study of the AC Losses of a High Field Superconductor and the Implications for Power Applications by : Donald Joseph Hanrahan
Download or read book A Theoretical and Experimental Study of the AC Losses of a High Field Superconductor and the Implications for Power Applications written by Donald Joseph Hanrahan and published by . This book was released on 1969 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theory for the hysteresis loss of a high-field superconductor carrying ac is presented, based on the Riemersma critical state model (B x J = C). Voltage waveforms, energy loss per cycle, and limiting values of effective resistivity are derived. For sinusoidal current of frequency f in 10-mil wire the high (critical) current limit of resistivity is found to be 4.06 x 10 to the -14th power f (ohm-meter) compared to 0.93 x 10 to the -16th power f for a current peak of one-tenth the critical current; both values are independent of the high-field material used. An equivalent circuit consisting of a variable inductance is proposed for the hysteretic superconductor and three possible definitions of the inductance are discussed. In any case, the inductance is nonlinear, a transcendental function of the current, the function being different on the four segments of a hysteresis loop. The high-current limit of the absolute, internal inductance (the preferred definition) per unit length is mu sub zero/3 pi (henry/meter). Experiments were performed at 4.2K on bifilar windings of 10-mil, Nb25%Zr wire, both bare and copper plated. Currents up to the critical value were used at frequencies of 60, 400, and 800 Hz. The feasibility of applying superconductivity to two classes of ac power equipment is discussed: (1) conventional apparatus such as transformers and rotating machines, already highly efficient, and (2) low-voltage static inverters which are not so efficient. A novel circuit is presented for a superconducting inverter or oscillator. (Author).
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 Report of NRL Progress by : Naval Research Laboratory (U.S.)
Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on 1970 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Case Studies in Superconducting Magnets by : Yukikazu Iwasa
Download or read book Case Studies in Superconducting Magnets written by Yukikazu Iwasa and published by Springer Science & Business Media. This book was released on 2009-04-05 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2nd edition emphasizes two areas not emphasized in the 1st edition: 1) high-temperature superconductor (HTS) magnets; 2) NMR (nuclear magnetic resonance) and MRI (magnetic resonance imaging) magnets. Despite nearly 40 years of R and D on superconducting magnet technology, most areas, notably fusion and electric power applications, are still in the R and D stage. One exception is in the area of NMR and MRI. NMR magnets are very popular among chemists, biologists, genome scientists, and most of all, by drug manufacturers for drug discovery and development. MRI and NMR magnets have become the most successful application of superconducting magnet technology and this trend should continue. The 2nd edition will have new materials never treated formally in any other book of this kind. As with the 1st, most subjects will be presented through problem format to educate and train the designer.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Second Generation High Temperature Superconductors: Electromagnetic Characteristics and AC Loss Analysis by : Boyang Shen
Download or read book Study of Second Generation High Temperature Superconductors: Electromagnetic Characteristics and AC Loss Analysis written by Boyang Shen and published by Springer Nature. This book was released on 2020-08-31 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis introduces a systematic study on Second Generation (2G) High Temperature Superconductors (HTS), covering a novel design of an advanced medical imaging device using HTS, and an in-depth investigation on the losses of HTS. The text covers the design and simulation of a superconducting Lorentz Force Electrical Impedance Tomography. This is potentially a significant medical device that is more efficient and compact than an MRI, and is capable of detecting early cancer, as well as other pathologies such stroke and internal haemorrhages. It also presents the information regarding the fundamental physics of superconductivity, concentrating on the AC losses in superconducting coils and tapes. Overall, the thesis signifies an important contribution to the investigation of High Temperature Superconductors. This thesis will be beneficial to the development of advanced superconducting applications in healthcare as well as more broadly in electrical and energy systems.
Book Synopsis AC Loss and Macroscopic Theory of Superconductors by : W.J. Carr Jr.
Download or read book AC Loss and Macroscopic Theory of Superconductors written by W.J. Carr Jr. and published by CRC Press. This book was released on 2001-07-05 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through the 'magic' of averages it is shown that Maxwell's equations can be used in a simple way to describe filamentary composites as well as pure bulk superconductors. The second edition of AC Loss and Macroscopic Theory of Superconductors, like the first edition, is written for both physicists and engineers. It starts with a rigorous and partial
Book Synopsis Pseudogap in High Temperature Superconductors by : A. V. Narlikar
Download or read book Pseudogap in High Temperature Superconductors written by A. V. Narlikar and published by Nova Biomedical Books. This book was released on 1999 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume is devoted to the normal state pseudogap discovered in high Tc cuprates, which is currently an area of great topical interest and still not fully understood. The articles, written by the renowned experts in the field, consolidate the experimental findings and present various theoretical models to explain the occurrence of the gap.
Download or read book NRL Report written by and published by . This book was released on 1969 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-04 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superconducting Devices & Materials by :
Download or read book Superconducting Devices & Materials written by and published by . This book was released on 1968 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1970 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1966 with total page 1320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Fachplan Wirtschaft und Arbeit written by and published by . This book was released on 1975 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Second-Generation High-Temperature Superconducting Coils and Their Applications for Energy Storage by : Weijia Yuan
Download or read book Second-Generation High-Temperature Superconducting Coils and Their Applications for Energy Storage written by Weijia Yuan and published by Springer Science & Business Media. This book was released on 2011-06-24 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Second-Generation High-Temperature Superconducting Coils and Their Applications for Energy Storage addresses the practical electric power applications of high-temperature superconductors. It validates the concept of a prototype energy storage system using newly available 2G HTS conductors by investigating the process of building a complete system from the initial design to the final experiment. It begins with a clear introduction of the related background and then presents a comprehensive design of a superconducting energy storage system that can store maximum energy using a limited length of superconductors. The author has created a modeling environment for analysis of the system and also presents experimental results that are highly consistent with his theoretical calculations.
