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 13 of 13 for “"Uninterrupted power supply"”.
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Power electronics solutions for uninterrupted power supply and grid-tie inverters
This thesis proposes two new topologies for Uninterrupted Power Supply (UPS), and a grid-tie microinverter. The first topic will discuss an on-line transformerless UPS system based on the integrated power electronics converters that is able to control the input power factor, charge the battery, and …
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Micro Hydroelectric Reservoir Use for creating and Uninterrupted Power Supply; Production case Studies in Iceland
… hydroelectric installations are an established power generation system that have been applied in Iceland previously. Combinations of hydroelectric storage and intermittent resources, such as wind, are also an established method of creating a consistent supply with no power failure. Furthermore, …
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Senior phase technology teachers' experiences of the utilisation of smartboards in Ekurhuleni District rural schools
… depends on having functional smartboards, uninterrupted power supply, stable internet access, and ongoing training. The study adhered to ethical considerations by ensuring informed consent, voluntary participation, confidentiality, and anonymity.
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Proximity Coupled Non-Intrusive Wireless Sensors For Monitoring and Diagnostics
… sensors to monitor infrastructure, such as power systems have drawn a great deal of attention in the research community recently. To ensure reliable and uninterrupted power supply, sensors can be developed which will probe the power cables non-intrusively, transmit the fault information …
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Employing UPS for Safe and Efficient Power Oversubscription in Data Centers
… significant for the profits of data centers to supply maximum power of servers within existing power supply capacities. Various power capping solutions have been recently proposed, a conservative assumption made by existing solutions is that peak power should never exceed the rated circuit …
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Supecapacitor-assisted Temperature Modification Apparatus (SCATMA) and Fast Supercapacitor Charger
… "instant" water heating system as well as a new power converter topology to fast charge a supercapacitor bank. Delayed delivery of hot water in domestic water heating systems wastes over 15 million cubic metres of treated water per annum in New Zealand. The patent pending supercapacitor assisted …
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Power System State Estimation and Renewable Energy Optimization in Smart Grids
… dissertation will focus on two important topics: power system state estimation using phasor measurement units (PMUs), and optimization for renewable energy integration.</p><p>In the first topic, we consider power system state estimation using PMUs, when phase angle mismatch exists in the …
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Experimental Evaluation of Medium-Voltage Cascode Gallium Nitride (GaN) Devices for Bidirectional DC–DC Converters
… an increasingly significant role in ensuring uninterrupted power supply and in supporting the reliability and stability of microgrid operations. Power electronics, especially bidirectional DC–DC converters, are essential parts in distributed energy storage and alternative energy systems …
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Electricity distribution networks’ analysis with particular references to distributed generation and protection
Electric power systems have served well the consumers need for continuous, uninterrupted power supply of good quality and at the minimum possible cost. However, nowadays, the worldwide increasing demand on electric power, coupled with governmental policy changes towards “green” energy and emissions …
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Design, Implementation, and Analysis for an Improved Multiple Inverter Microgrid System
… system and loads, a microgrid (MG) can offer a power system with increased reliability, flexibility, cost effectiveness, and energy efficient feature. Popular energy sources like photovoltaic modules (PV), wind turbines, and fuel cells require the power-electronic interface as the bridge to …
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Aggregator-Assisted Residential Participation in Demand Response Program
… this is very short operating duration of peaking power plants which require large capital investments to establish. Those power plants remain idle for most of the time of a year except for some peak demand periods during hot summer days. This process is inherently inefficient but it is necessary …
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Development of micro-thermoelectric generator (µ-TEG) for powering wearable devices
… technology, offering the promise of self-powered and autonomous operation. Thermoelectric generator (TEG) energy harvesting technology has garnered significant attention in recent years as an uninterrupted power supply for the continuous operation of wearable devices. TEGs are solid-state …
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Wake-up Radio based Approach to Low-Power and Low-Latency Communication in the Internet of Things
… of Things to flourish a long lasting energy supply for remotely deployed large- scale sensor networks is of paramount importance. An uninterrupted power supply is required by these nodes to carry out tasks such as sensing, data processing, and data communication. Of these, radio communication …