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 32780 for “"power"”.
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Improving data center power delivery efficiency and power density with differential power processing and multilevel power converters
Existing data center power delivery architectures consist of many cascaded power conversion stages. The system-level power delivery efficiency decreases each time the requisite power is processed through the individual stages, and the total power converter footprint increases by each cascaded …
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Power flow in railway electrification power system
… distribution system for a 2x25 kV railway power system. The analysis of Railway Power Supplies (RPS) presents a unique type of load flow problem which is characterized by its constant moving loads, dynamically changing load types (constant current/constant power), and its specialized …
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Power supplies for ultra low power applications
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Power Management and Power Conditioning Integrated Circuits for Near-Field Wireless Power Transfer
Near-field wireless power transfer (WPT) technology facilitates the energy autonomy of heterogeneous systems, significantly augmenting complementary metal-oxide-semiconductor field-effect-transistor (CMOS) technology. In low-power wearable devices, existing power conditioning integrated circuits do …
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Power Sharing and Power Quality Improvement in Parallel Connected Power Converters in the Microgrid
Power electronics-based Voltage Source Converters (VSCs) have been widely used as an interface between energy source and the grid/load in microgrid system. The VSCs are required not only to provide the basic function that achieves reliable and accurate power sharing in a microgrid, but also to …
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Power from Below: Power, Democracy and Socialist Theory
… reframes socialist theory through the concept of power. The goal of this reconceptualization is to overcome the main limits of Marxism on issues of usefulness for activists, of accessibility for ordinary people, of the integration of feminist and anti-racist perspectives, and on its relationship …
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Digital power line communication on EHV power lines
… of the modem and reflections on the power line. Most of the modem functions were implemented using DSP techniques.
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Subtransmission power system amelioration through increased power transfer
… for the amelioration of subtransmission power systems through increased power transfer by reviewing various infrastructure technologies and solution approaches. In South Africa, as a developing country, there are subtransmission grid areas where reliability and spare capacity have …
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Power management circuits for ultra-low power systems
Power management circuits perform a wide range of vital tasks for electronic systems including DC-DC conversion, energy harvesting, battery charging and protection as well as dynamic voltage scaling. The impact of the efficiency of the power management circuits is highly profound for ultra-low …
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The conversion of wind power to electrical power
The electrical-producing windmill industry boomed during 1983. It was estimated that"unit sales during 1983 would be twice those of the prior 10 years combined." Most of the activity has been in the development of windfarms in the western states and Hawaii. The boom is largely due to (1) tax breaks …
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Power Systems Analysis in the Power-Angle Domain
The idea of performing power systems dynamic analysis in the power-angle domain has been hinted at by previous researchers, but this may be the first published document to develop detailed techniques by which entire power systems can be represented and solved in the power-angle domain. With the …
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Power playground
… effects, sabela was drawn on as a signifier of power both in the informal school space and in interactions.
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Power Management Schemes for Ultra Low Power Biomedical Devices
Device power dissipation has grown exponentially due to the rapid transistor technology scaling and increased circuit complexity. Motivated by the ultra low power requirements of emerging implantable and wearable biomedical devices, novel power management schemes are presented in this thesis to …
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Harmonic analysis in power network with renewable power generator
… or microprocessor controllers are used in the power system. It has brought new challenges to supply quality, and thus the study of Power Quality (PQ) has become obviously important. Harmonic analysis plays an important role in PQ study because harmonic has great influence on the power system …
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Light-load power management in differential power processing systems
This Dissertation was approved for publication on 2020-04-03 at 15:58.
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Magnetic machines and power electronics for power MEMS applications
… permanent-magnet (PM) generators, and their power electronics, for use in Watt-level Power MEMS applications such as a microscale gas turbine engine. The generators are three-phase, axial-flux, synchronous machines, comprising a rotor with an annular PM and ferromagnetic core, and a stator …
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Emerging Power-Gating Techniques for Low Power Digital Circuits
… down and levels of integration increase, leakage power has become a critical problem in modern low-power microprocessors. This is especially true for ultra-low-voltage (ULV) circuits, where high levels of leakage force designers to chose relatively high threshold voltages, which limits …
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