Near Infrared Photovoltaic Micro-Cell For Optical Fibre Based Power Harvesting,
2010
Edith Cowan University
Near Infrared Photovoltaic Micro-Cell For Optical Fibre Based Power Harvesting, Gary Allwood
Theses : Honours
A photonic power system using a silicon or germanium based device as a photonic power converter was proposed. The properties of each device were investigated to determine the optimum structure, design, configuration and efficiency for power conversion. These included, but were not limited to, device geometry, doping concentration and the wavelength of the incident beam. Relevant inferences were made from the results obtained and compared to previous work. Currently, research into photovoltaic power converters is focused on the efficiencies of complex heterostuctures made from gallium-arsenide compounds. Here, the properties of a silicon device were investigated in detail as the predicted …
Low Impedance Restricted Earth Fault Algorithms In Numerical Relays.,
2010
Universiti Malaya
Low Impedance Restricted Earth Fault Algorithms In Numerical Relays., Babak Nim Taj
Student Works (2010-2019)
Low impedance restricted earth fault protection is one of the protection function to protect the transformer winding with earthed neutral point. The purpose of this study is to investigate low impedance restricted earth fault algorithm in numerical relays. Five restricted earth fault numerical algorithms from ABB, AREVA T&D, SIEMENS, SCHNEIDER ELECTRIC and GENERAL ELECTRIC are employed for restricted earth fault algorithms assessment.This dissertation is to find out advantages and disadvantages of selected algorithms. Moreover, this dissertation is to compare each algorithm with the other algorithms. Also, magnetizing inrush current, over excitation and CT saturation impression on restricted earth fault operation …
Fabrication Of Zinc Oxide Thin Films For Renewable Energy And Sensor Applications,
2010
Wright State University
Fabrication Of Zinc Oxide Thin Films For Renewable Energy And Sensor Applications, Theresa Y. Hill
Browse all Theses and Dissertations
Progress in commercializing renewable energy technologies is being advanced by developments in Zinc Oxide material science. The photovoltaic cell, for example, generates electricity by receiving solar energy into the cell, generating electrons, and simultaneously transporting electrical charge out of the cell. Metals are capable of removing electrical charge but block transmission of sunshine. Glass and plastics are capable of transmitting sunshine but block the removal of electrical charge. Therefore an exterior layer that is both optically transparent and electrically conductive is desirable. Transparent conductive oxides (TCOs) are the ideal material for such applications since they are capable of both functions. …
Sulfur-Tolerant Catalyst For The Solid Oxide Fuel Cell,
2010
Wright State University
Sulfur-Tolerant Catalyst For The Solid Oxide Fuel Cell, Bozeman Joe Frank Iii
Browse all Theses and Dissertations
JP-8 fuel is easily accessible, transportable, and has hydrogen content essential to solid oxide fuel cell (SOFC) operation. However, this syngas has sulfur content which results in a poisonous hydrogen sulfide that degrades electrochemical activity and causes complete SOFC failure in some cases. The goal is to synthesize and verify a cost-effective, catalyst supported on cerium oxide that either stabilizes ionic conductivity in the presence of hydrogen sulfide and/or is highly sulfur-resistant. After thorough computational analysis, it was concluded that the platinum-copper skin catalyst was the most cost-effective, sulfur-resistant catalyst. Experimental synthesis of copper, platinum, and platinum-copper skin catalysts supported …
Design Of An Integrated Starter-Alternator For A Series Hybrid Electric Vehicle: A Case Study In Axial Flux Permanent Magnet Machine Design,
2010
University of Nebraska-Lincoln
Design Of An Integrated Starter-Alternator For A Series Hybrid Electric Vehicle: A Case Study In Axial Flux Permanent Magnet Machine Design, Jessica L. Colton
Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research
This thesis details the design of an electric machine to perform as both a starter and alternator in a series hybrid electric vehicle. The focus of the work is on practical design aspects specific to single-sided axial flux permanent magnet machines with non-overlapped windings. First, a characterization of the rotor losses in these machine types is presented through experimental validation of finite element analysis estimates. The approaches taken to model the axial flux geometry, especially in two-dimensions, are detailed, and the difficult issue of validating the finite element analysis estimates with experimental data is addressed with a prototype 24-slot, 20-pole …
