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 12 of 12 for “"AC loss"”.
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Transport AC loss in high temperature superconducting coils
… the problem of calculating and measuring AC losses in superconducting coils is addressed, with a particular focus on the transport AC loss of coils for electric machines. In order to model the superconducting coil's electromagnetic properties and calculate the AC loss, an existing two …
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AC loss in MgB2-based fully superconducting electric machines
Superconducting electric machines have shown potential for dramatic increases in specific power for applications such as offshore wind generation, turbo-electric distributed propulsion in aircraft, and ship propulsion. Superconductors exhibit zero loss in dc conditions, though ac current produces …
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Study of Second Generation High Temperature Superconductors: Electromagnetic Characteristics and AC Loss Analysis
… which covers their electromagnetic characteristics and AC loss analysis. Lorentz Force Electrical Impedance Tomography (LFEIT) is one of the most promising hybrid diagnostic scanners with burgeoning potential for biological imaging, particularly in the detection of cancer and internal …
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AC-loss induced quenching in adiabatic coils wound with composite superconductors having different twist pitches
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Study of high temperature superconducting tapes for applications in high-field magnets and power systems
Nowadays, the application of fusion in achieving large-scale, sustainable and carbon-free form of energy is urgently needed. In the design of fusion machines, the construction of superconducting magnets with high field and low inductance is very important. This requires superconducting magnets to …
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An investigation into high temperature superconducting flux pump technology with the circular type magnetic flux pump devices and YBaCuO films
… resonance imaging (MRI) magnets, electrical machines, magnetic levitation trains, energy storage, etc. 2G HTS coils can be operated using either dc current or ac current. Several important issues have yet to be resolved, such as how to properly magnetise an HTS coil under dc conditions, or how …
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A high-current and low-loss high-temperature superconducting cable for nuclear fusion applications
… 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 minimization and current …
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Tailoring Superconductor and SOFC Structures for Power Applications
… energy. However, production costs and energy losses prohibit widespread adoption of these technologies. This thesis investigates low-cost methods to tailor the structures of HTS wires and SOFCs to reduce these energy losses. Section I focusses on methods to produce filamentary HTS coated …
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"Development of high-frequency ""airgap"" windings for high-power density electrical machines"
This Thesis was approved for publication on 2016-04-07 at 16:22.
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Electromagnetic-thermal Characteristics of Conductor on Round Core (CORC) Cables
… exhibit more significant current-carrying capacity while reducing alternating current (AC) losses. They are promising candidates for low-loss power transmission and low-inductance high-field magnets. This thesis carries out exhaustive research on the electromagnetic-thermal characteristics of …
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Electro-thermal design and optimization of cryocooled electrical machines
… under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Second-generation high-temperature superconducting coils and their applications for energy storage
… it is a 'green' material by saving energy loss and hence reducing carbon emissions. Recently the massive manufacture of high-temperature superconducting (HTS) materials has enabled superconductivity to become a preferred candidate to help generation and transportation of cleaner energy. One …