Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Trapped field magnets"”.
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Investigation of High-Temperature Superconducting Trapped Field Magnets in a Superconducting Motor
… investigation of magnetisation and cross-field demagnetisation in high-temperature superconducting (HTS) trapped field stacks (TFSs) within a partially superconducting machine, employing a finite element method (FEM)-based modelling approach. The key innovations presented in this work are: …
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Stacks of high temperature superconducting tape as trapped field magnets for energy applications
… using superconducting materials. In particular, trapped field superconducting magnets, where the field is generated by a circulating persistent current in the sample, can create magnetic fields an order of magnitude higher than possible using conventional ferromagnets, thus increasing the power …
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Advanced Numerical Modelling of Bulk Superconductor Magnetisation
… of a material, and the expulsion of magnetic fields from within its volume, below a certain (critical) temperature. Superconductors can be subdivided into two classifications; type-I, or type-II, with the latter exhibiting a ‘mixed-state’ of superconductivity across their volume. Through …
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Tailoring Superconductor and SOFC Structures for Power Applications
… design, the Roebel cable, can be used to make trapped field magnets that produce a uniform magnetic field profile over a large area. This trapped field magnet work is extended to study self-supporting soldered stacks of HTS tape that demonstrate unprecedented magnetic field uniformity. Section …
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The mechanical properties of Y-Ba-Cu-O and Gd-Ba-Cu-O/Ag bulk superconductor magnets
… due to their ability to trap magnetic fields in excess of 17 T, which is an order of magnitude greater than what can be achieved with conventional iron-based permanent magnets. One of the major obstacles to the use of (RE)BCO trapped field magnets is their poor mechanical properties, as …
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Magnetisation of bulk superconductors for future light-weight electric motors
Bulk superconductors, in their capacity as trapped field magnets, offer a practical means of generating high magnetic fields in small volumes. This is desirable for applications in which portability is of primary concern. In particular, superconducting materials are seen as enablers leading towards …
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Development of a Bulk Superconducting Magnet for Benchtop Nuclear Magnetic Resonance
… for the generation of the strong polarising fields required for nuclear magnetic resonance (NMR) when utilised as trapped field magnets (TFMs). To date, these stacks have been magnetised by the quasi-static field cooled magnetisation (FCM) technique within NMR-grade fields, requiring access …