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 20 of 33 for “"electrical equipment"”.
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Standardization of hull, mechanical, and electrical equipment (H, M and E) inventory
Inventory standardization can increase parts availability while reducing operating costs. Although DOD and Navy policies and guidance support standardization, Navy programs have not been successful in minimizing nonstandard parts in weapons designs. This thesis attempts to identify the supply …
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Rapid quantification of trypsin inhibitors in food and feed formulations with electrospray ionization mass spectrometry
… oils developed for transformers and similar electrical equipment. Because of lack of internationally recognized test methods to study oxidation stability of natural ester oils for use in transformers and similar electrical equipment, this research work has been aimed at developing appropriate …
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Partial Discharges: Experimental Investigation, Model Development, and Data Analytics
Insulation system is an inseparable part of electrical equipment. In this study, one of the most important aging factors in insulation systems known as partial discharge (PD) is targeted. PD phenomenon has been studied for more than a century and yet new technologies still demand the investigation …
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Characterisation of occupancy in building performance simulation for non-residential buildings
… These inputs include weather files, and electrical equipment and lighting usage. The influence of using actual weather files instead of using Typical Meteorological Year (TMY) files on the simulation results is investigated. Furthermore, the impact of employing data-driven electrical …
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Evolution of Corporate Leverage on the JSE from 1994 to 2016
… Nonlife Insurance, Health Care Equipment and Services, Pharmaceuticals and Biotechnology, Media, Technology Hardware and Equipment, Software and Computer Services, Electronic and Electrical Equipment and Support Services. 621 delisted companies were also briefly analysed to …
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Design, Simulation, and Hardware Construction of a 600 W Solid State DC Circuit Breaker for the DC House Project
… able to arrest overcurrent conditions to prevent electrical equipment and wiring from causing building fires or other hazards from occurring. With more DC renewable sourced structures such as Cal Poly’s DC House, an inexpensive and reliable protection system is necessary to ensure safe energy …
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Early Wildfire Detection with Line Sensors
… as they can damage transmission lines and other electrical equipment, which in turn can cause major power shutdowns. Especially in western U.S., severe drought conditions and weather variability cause residents to become more vulnerable to wildfire disasters as their safety is threatened. We are …
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Islanding Detection and Cybersecurity in Inverter-Based Microgrids Under a High-Noise Environment
… industrial operations, damage sensitive electrical equipment, and induce outages upon the resynchronization of the island with the grid. This study proposes an islanding detection method employing Duffing oscillators to analyze fluctuations at the point of common coupling (PCC) under a …
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Enhanced earthing performance by improved design and grounding material properties
… in grounding conductor as it placed next to the electrical equipment, hence the grounding conductor is shortened. A prototype of E.G.E was developed in size measuring 19.5 em x 19.5 em x 11.5 em and filled with selected grounding material, attached with a grounding electrode. Meanwhile, the …
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Rolling-Ball Rubber-Layer system for the lightweight structures seismic protection: experimentation and numerical analyses
… task. Artefacts, sophisticated medical and electrical equipment, high performance computer installations and other special contents have shown, in the last years, their high vulnerability both for high and moderate earthquakes. The lack of effective techniques, sufficiently developed for …
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A model-based alarm processor for the assessment of protection systems performance
… in performance and reliability of the electrical equipment under their supervision. Power grids are made up of a multitude of electrical components, combined with protection equipment in place to ensure expensive assets are protected from damage. Attempting to effectively manage the …
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Efficient design of spacecraft electronics to satisfy launch vibration requirements
… tools that improve the spacecraft electronic equipment design process, where these tools reduce the chance of the equipment failing the pre-flight qualification vibration test, whilst also being quick and simple to implement. These relatively simple tools consist of: (1) a list of different …
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Design and implementation of three-phase four-wire active filters
… of industrial, commercial and even residential electrical equipment is causing the deterioration of the quality of the electric supply through distortion of the supply voltage. This has led to the development of more stringent requirements regarding harmonic current generation, as are found in …
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The Dynamics of Rigid Bodies on Moving Deformable Support Media
… it is not uncommon for heavy mechanical and electrical equipment to be placed on wheels. Examples of such devices are medical carts, mechanical equipment in hospitals, electrical transformers and recently even supercomputers. Although wheels facilitate the operation of these devices, they …
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Experimental Investigation and CFD Modelling of a Thermosyphon-equipped Heat Exchanger used in Low-grade Waste Heat Recovery
… vacuum. Heat pipes are commonly found in modern electrical equipment due to their high rate of heat transfer per unit area and lack of outer energy source. Wickless heat pipes, also known as two-phase closed thermosyphons, lack a sintered wick structure within and are therefore easier to …
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Ceramic Microreactors for on-Site Hydrogen Production
… to emerge as an attractive option to obtain electrical power sources for the operation of portable electronic devices, vehicles, and electrical equipment in remote locations. The development of polymer electrolyte membrane (PEM) fuel cells, however, has been hindered by safety issues related …
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Development Challenges for Chinese Private Manufacturing Firms in Globalisation
… Wenzhou’s leading firms in the footwear and the electrical equipment industries, to reflect China’s development in globalisation. Based on Wenzhou’s experience, the dissertation summarises the competition situation of Chinese private manufacturing firms in globalisation, concludes their current …
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A New Approach to Assessment and Utilisation of Distribution Power Transformers
Electrical power systems utilise several voltage levels using power transformers to transfer voltages and connect parts of the power system with different voltage levels. One of these voltage transformations is being performed in the key component of the electrical power system: the distribution …
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Palladium Catalyzed Hydrodechlorination of 4-Chloroanisole in Phosphonium Ionic Liquids
… formed as complex mixtures, were used in electrical equipment. Although they are no longer manufactured, some PCBs are still in service—albeit, in closed or semi-closed systems such as dielectric fluids for transformers and capacitors, or are still present in the environment. The continued …
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Organizing e-waste
… the creation of the Waste of Electronic and Electrical Equipment (WEEE) Directive, introduced into the UK in 2006. WEEE aims to control electrical and electronic waste through the promotion of reducing, reuse, recycling and recovery. The intention is to improve the environmental profile of …
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