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 406 for “"electrical energy"”.
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Towards an Efficient Allocation of Electrical Energy
Made available in DSpace on 2014-12-11T17:13:29Z (GMT). No. of bitstreams: 1 7511642.pdf: 8169467 bytes, checksum: b7a765ce10a4ce92998dc940c86de56a (MD5) Previous issue date: 1974
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Toward distributed control for autonomous electrical energy systems
… we study the problem of enabling autonomous electrical energy systems (AEESs) by means of distributed control. We first propose a modular modeling approach that represents a general electrical energy system (EES) as a negative feedback configuration comprising a planar electrical network …
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Estimating Cell Capacity for Multi-Cell Electrical Energy System
<p>A Multi-Cell Electrical Energy System is a set of batteries that are connected in series. The series batteries provide the required voltage necessary for the contraption. After using the energy that is provided by the batteries, some cells within the system tend to have a lower voltage than the …
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A human powered speed aircraft using electrical energy storage
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1985.
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An Enhanced Signal Processing Toolbox for Electrical Energy Monitoring
… of literature exists for load identification and energy disaggregation under ideal, healthy conditions. However, a significant value proposition of nonintrusive load monitoring comes from fault detection and diagnostics. Early detection of electromechanical faults aids safety, reduces energy …
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Drying ceramic products using induced ultra-high frequency electrical energy
… with the use of the ultrahigh frequency energy, to dry complicated shapes evenly over their cross sections, which will enable much more rapid and safe drying of these shapes. (c). The structures of the pieces are not detrimentally affected by induced current, and the rapid drying of this …
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Mass Minimization of DC -Dc Converters in Portable Electrical Energy Sources
… a methodology for optimal design of portable energy-source systems, leading to an increase in specific energy density. The interaction between the source and converter is considered, which can result in a different system design than when the components are considered separately.
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Reaction Wheel Attitude Control System With Minimum Electrical Energy Andfixed-Time Constraints
Made available in DSpace on 2014-12-09T18:12:22Z (GMT). No. of bitstreams: 1 6801710.pdf: 4792276 bytes, checksum: 1f25049dc383462a2c174d8f18d04853 (MD5) Previous issue date: 1967
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Mechanistic Underpinnings of Efficient Chemical-to-Electrical Energy Interconversion in Bipolar Membranes
… devices requires an understanding of how electrical and chemical energy can be freely interconverted with minimal losses. One way in which chemical energy can be stored is in the form of ionic gradients. Bipolar membranes (BPMs) are an emerging technology that have the unique ability to …
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A design study to harvest electrical energy from walking and running motions
… studies two different methods of harvesting electrical energy from everyday activities such as walking and running. It is a design study that aims to create a device which can be attached or incorporated into a shoe, ideally a military boot, so that soldiers can charge back-up batteries for …
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Capacitor Ladder Circuitry for Improving Electrical Energy Transfer Efficiency to Electromechanical Actuators
… paper focuses on the general process of taking electrical energy from a power source to a mechanical system to do mechanical work, specifically focusing on a ladder circuit to deliver energy to a capacitive-type actuator that is modeled as a mass-spring-damper (MSD) system. The whole chain of …
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Synthesis and characterization of ionic liquid electrolytes for use in electrical energy storage devices at elevated temperatures
Electric energy storage (EES) devices like lithium ion batteries and supercapacitors have limited operational temperatures between 0 and 40 oC, preventing their use in demanding, high temperature applications. The principal limitation of these systems is the flammable and volatile carbonate-based …
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Modeling and analysis of a H₂-H₂O driven reversible solid oxide cell system for electrical energy storage applications
The future of renewable energy resources, such as solar and wind is heavily reliant on energy storage. Solid oxide cells (SOCs) with bidirectional operation have advantages over other types of energy storage systems since they may be deployed in time-shifting, long-duration, and seasonal storage …
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Impact of Ice Storage on Electrical Energy Consumption in Large and Medium-sized Office Buildings in Different Climate Zones
… demand constitutes a large portion of total electrical demand for office buildings during peak hours. Deteriorating load factors, increased use of more inefficient and polluting peaking units are the aftermaths of growth in peak demand challenging energy system efficiency and grid …
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Relationship Between Wind and Solar Electrical Energy Potential in the Texas Hill Country: A Study at the Texas State Freeman Ranch Center
… concerns creating a need for renewable energy sources. The purpose of this study is to analyze metrological data collected at the Freeman Ranch Center to determine if there is the potential for wind energy to supplement solar energy, creating more consistent and reliable energy for the …
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A dynamic model for forecasting and policy making in the regulated electric utility industry
… and fuel prices on the prices and profit of electrical energy, the effect of regulatory policy on the price, demand and profit for electrical energy, the effect of peak load pricing in reducing capital costs to the utility, the effect of volume pricing on the electrical energy …
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A strategy for the management of energy losses in a local electricity distribution network
… a strategy to minimize the non-technical electrical energy losses in an electrical distribution network. In order to develop the strategy, a model was constructed that simulates an electrical distribution network and includes different parameters that calculate the estimated technical …
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Solar thermophotovoltaic efficiency potentials : surpassing photovoltaic device efficiencies
Solar energy has gained more attention in recent years due to increased concerns about the continued use of fossil fuels. Solar energy is a form of renewable energy, and solar energy technology does not release greenhouse gases responsible for climate change. While photovoltaic (PV) cells, which …
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