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 18 of 18 for “"Power and Energy Systems"”.
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Naval Ship Distributed System Design, Capability Modelling and Mission Effectiveness using a Dynamic Architecture Flow Optimization
… ship distributed system architectural framework and related design tools that can be used during ship Concept and Requirements Exploration (CandRE). This architectural framework includes architectures for ship operations, the physical arrangement of Mission Power and Energy Systems (MPES) vital …
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Characterizing Naval Ship Systems Power and Energy Metrics through Modeling and Analysis
… introduces a framework for analyzing shipboard power and energy systems as a repeatable process to differentiate between preferred solutions within a design tradespace. The Naval design community needs a consistent method for evaluating non-functional requirements, called “ilities,” in the early …
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Intelligence by design in an entropic power grid
… the term Entropic Grid is coined to describe a power grid with increased levels of uncertainty and dynamics. These new features will require the reconsideration of well-established paradigms in the way of planning and operating the grid and its associated markets. New tools and models able to …
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A Method for Evaluating Aircraft Electric Power System Sizing and Failure Resiliency
… commuter aircraft are increasing the size and complexity of electrical power systems by increasing the number of electrical loads. With this increase in complexity comes a need to analyze electrical power systems using new tools. The Hybrid Power System Optimizer (HyPSO) developed by Airbus …
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Miniaturized, Directional Antennas For Wireless Power Transfer
… age of ever advancing wireless technologies and compact mobile devices has given us the ability to stay connected in all but the remotest places on earth. However, one limiting factor to new wireless technologies has always been the battery. In this thesis the prospect of wireless power …
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Cybersecurity Methods for Grid-Connected Power Electronics
… process, defense-in-depth method, and security techniques for a secure distributed energy resource. The distributed energy resource is a cybersecure, solar inverter and battery energy storage system prototype, collectively called the Cybersecure Power Router. Consideration is given …
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Air piston approach to wave power generation
… calculated that, by tapping just 0.2% of the energy produced by the world's oceans we can provide for all the worlds current energy needs. It is generally accepted that a combination of traditional energy production methods, (oil, coal, gas, nuclear) mixed with a combination of renewable …
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Comparing the Efficiency of Heterogeneous and Homogeneous Data Center Workloads
… quickly to keep pace with increased data storage and computing needs. Data growth, if not planned or managed correctly, can have larger efficiency implications on your data center as a whole. The long term reduction in efficiency will increase costs over time and increase operational overhead. …
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Data-Centric Situational Awareness and Management in Intelligent Power Systems
<p>The rapid development of technology and society has made the current power system a much more complicated system than ever. The request for big data based situation awareness and management becomes urgent today. In this dissertation, to respond to the grand challenge, two data-centric power …
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Fractional Order State Feedback Control for Improved Lateral Stability of Semi-Autonomous Commercial Heavy Vehicles
<p>With the growing development of autonomous and semi-autonomous large commercial heavy vehicles, the lateral stability control of articulated vehicles have caught the attention of researchers recently. Active vehicle front steering (AFS) can enhance the handling performance and stability of …
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Understanding the Impact of Large-Scale Power Grid Architectures on Performance
… is a critical system requirement for the power grid in matching the supply to the demand. This balancing has historically been achieved by conventional power generators. However, the increasing level of renewable penetration has brought more variability and uncertainty to the grid (Ela, …
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Development of a Reference Design for a Cyber-Physical System
… assist in the selection of security practices in power electronics design. A prototype will be developed from this reference design for evaluation. This evaluation will include a brief cost/benefit analysis to gauge the efficacy of implementing each layer of security throughout the power …
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Grid Strength Assessment Trough Q-V Modal Analysis and Maximum Loadability of a Wind-Dominated Power System Using P-Q Regions
… change is a menace to the existence of the world and policymakers are trying totackle this phenomenon by deploying large-scale wind farms into their grids. Among them, wind energy shows a promising future to substitute the traditional power plants. However, the deployment of these wind farms into …
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III-nitride nanowire light-emitting diodes: design and characterization
… offered by this materials system. The direct energy bandgap III-nitride semiconductors can absorb or emit light efficiently over a broad spectrum, ranging from 0.65 eV (InN) to 6.4 eV (AlN), which encompasses from deep ultraviolet to near infrared spectrum. However, due to the lack of native …
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Development of Microgrid Test Bed for Testing Energy Management System
… the world population has reached 7.5 billion, and this number is expected to grow at the rate of 1.13% every year [1]. With this increase in population, the total demand for electricity has also increased. More people means the need for more power: electricity to power homes, schools, …
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ICT-Enabled Control and Energy Management of Community Microgrids for Resilient Smart Grid Operation
… has focused on developing novel controllers and algorithms to enhance the resilience of the power grid and increase its readiness level against major disturbances.<strong></strong></p> <p>The U.S. power grid currently encounters two main challenges: <strong>(1) </strong>the massive and …
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A Hybrid State/Event Driven Communication-based Control for DC Microgrids
<p>The U.S. electric power industry is undergoing unprecedented changes triggered by the growing electricity demand, and the national efforts to reduce greenhouse gas emissions. Moreover, there is a call for increased power grid resiliency, survivability and self-healing capabilities. As a result …