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 213 for “"Power applications"”.
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Wind power applications to groundwater remediation
"The use of renewable energy systems to power groundwater remediation systems seems like an inherently good idea because of potential cost savings and environmental benefits associated with reduced greenhouse gas emissions. Small wind turbine systems marketed for single residence applications may …
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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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Energy processing circuits for low-power applications
… have fueled the rich emergence of new applications including multi-media handsets, ubiquitous smart sensors and actuators, and wearable or implantable biomedical devices. New ultra-low power circuit techniques are constantly being proposed to further improve the energy efficiency of …
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Advanced filters and components for power applications
… improvement is in design of low pass filters for power electronics, although some other applications will be presented. In switching power supplies the input and output filters must attenuate frequencies related to the fundamental switching frequency of the converter. The filters represent a major …
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Filters with active tuning for power applications
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Deeply scaled CMOS for RF power applications
… In this regard, the integration of the power amplifier (PA) function becomes an increasing challenge as technology geometries and supply voltages scale down. Gate length (Lg) scaling yields improved frequency response, promising higher power-added efficiency (PAE), a key RF PA …
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Polymer Composite Dielectric Materials For Pulse Power Applications
… high energy density storage systems for pulse power applications. Although electrochemical capacitors offer high energy and power density, their rate capability is limited by mass transfer and faradaic reaction rates - a critical issue for delivering intense pulsed power. Polymer composites, …
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Tailoring Superconductor and SOFC Structures for Power Applications
… for dramatic improvements in efficiency in power applications such as generation, transmission and use of electrical energy. However, production costs and energy losses prohibit widespread adoption of these technologies. This thesis investigates low-cost methods to tailor the structures of …
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Optically Controlled Vertical GaN finFET for Power Applications
… the increasing demand for electricity, efficient power electronics with high voltage and current capabilities become crucial in many applications. However, current power devices are mostly electrically triggered. Multilevel converters made of such devices often require complicated gate-driving …
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STUDY OF ADAPTIVE COMPRESSIVE SENSING FOR LOW POWER APPLICATIONS
… making it appealing for implementation of low-power sensors. This dissertation investigates techniques to further improve CS efficiency by adaptively adjusting the sampling rates or CS measurement sizes according to signal sparsity variations. The proposed technique is referred to as adaptive …
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Nanowire Transistors and RF Circuits for Low-Power Applications
… increasing demand of higher bandwidth and lower power consumption for transmitting data. The work aims at demonstrating how new types of structures, at the nanoscale, combined with what is referred to as exotic materials, can help benefit in electronics by lowering the consumed power, possibly by …
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Bi-directional DC-DC converter for low power applications
Applications that require exchange of power from the source to the load and vice-versa have conventionally been implemented with two uni-directional converters; each processing the power in one direction. With growing emphasis on compact, smaller and efficient power systems there is increasing …
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An electrothermally-actuated bistable MEMS relay for power applications
… contact structure to develop a MEMS relay for power switching. The relay components, fabricated by a through etch of a silicon wafer using deep reactive ion etch (DRIE), move laterally in the plane of the wafer. The synthesis, analysis, design, fabrication and testing of the relay are all …
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Low-loss inductor design for high-frequency power applications
Miniaturization of power electronics can improve the performance of many applications, such as renewable energy systems, data centers, and aerospace systems. Operation in the high frequency (HF) regime (3{ 30 MHz) has potential for miniaturizing power electronics, but designing small, efficient …
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Switched-doubly-fed-machine drive for high power applications
… through variable-speed drives (VSD), which are power-electronic based converters with associated control operating as an interface between the electrical machine and the electrical source. These drives are not only critical in a wide range of applications including industrial processes, electric …
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Fabrication of novel geometry fibre lasers for high power applications
… development of fabrication techniques for high power doped fibre lasers, using novel fibre geometries, and their demonstration. The main methods for increasing output power were using helical cores, multiple cores and large cores. A method for fabricating helical core fibres was proposed and …
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Development of high energy density dielectrics for pulse power applications
<p>"Pulsed power applications require large dielectrics (> 10" diameter and ~0.125 thick) with high breakdown strength (BDS). The presence of porosity and increasing grain size lowers the BDS. Testing conditions such as sample thickness, electrode area, electrode design, and form of applied voltage …
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High efficiency resonant dc/dc converter for solar power applications
… topology for a high efficiency dc/dc resonant power converter that utilizes a resistance compression network to provide simultaneous zero voltage switching and near zero current switching across a wide range of input voltage, output voltage and power level. The resistance compression network …
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III-V vertical nanowire transistor for ultra-low power applications
… been pioneered via a top down approach for logic applications in future ultra-low power systems. Process flow and critical modules for sub-10 nm VNW transistors are developed from scratch. A novel dry etch technique based on BCl₃/SiCl₄/Ar chemistry for fabricating sub-20 nm III-V nanostructures …
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S band narrow-wall slotted waveguide antenna For high-power applications
… antenna arrays for S band high power applications. This antenna is designed to perform as a uniform array with minimum power reflected into the feed-waveguide. Based on the configuration, the double-narrow-wall-slot-array design is proposed for higher gain and grating lobes …
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