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 16 of 16 for “"Power and voltage"”.
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Power and Voltage Drop Analyses in VLSI Circuits
The bottleneck of voltage drop analysis lies in the matrix inversion that is involved in solving the circuit equations of the power/ground bus. To remove the bottleneck, we proposed an algorithm to quickly estimate the cycle-by-cycle maximum voltage drop values of a circuit driven by an input …
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Spatially Diverse Photovoltaic Power Plants for Reduced Power and Voltage Fluctuation Using Weather Forecast
<p>Environmental benefits, abundance and omnipresence of sunlight, easy installation and developments in the smart grid concept are the key features encouraging installation of photovoltaic power plants. However, the output power from a photovoltaic power plant is highly variable in nature. Several …
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Toward distributed control for autonomous electrical energy systems
… comprising a planar electrical network subsystem and a subsystem of single-port components. The input-output specifications of all components are in terms of power and voltage. This mathematical modeling supports the basic physical functionality of balancing power supply and demand at the …
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Materials and device design for MEMS piezoelectric mechanical vibration energy harvesters
… attention as an enabling technology for self-powered wireless sensor networks. MEMS-PVEHs are particularly attractive because of the potential to deliver power indefinitely and their ability to be integrated concurrently with microfabrication of sensor nodes. A key challenge has been …
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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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Control and operation of SMES and SMES/PV systems
Applications, converter topologies, and control schemes are examined for superconductive magnetic energy storage (SMES) systems. Diurnal load leveling for electric utilities and compensation for fluctuations in photovoltaic (PV) power generation are the primary applications discussed. It is …
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Advanced modeling and computational methods for distribution system state estimation
… penetration of distributed energy resources and smart grid technologies interfacing with the power distribution network motivate the continued advancement of accurate and robust system monitoring tools. Traditional state estimation approaches rely on iterative methods to solve the weighted …
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Optimal allocation of reactive power to mitigate fault delayed voltage recovery
The Masters Thesis research focuses on reactive power and voltage control during and following major power system disturbances such as faults and subsequent loss of transmission line(s) or generator(s), voltage recovery phenomena following successful fault clearing, dynamic swings of power systems …
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Optimal power flow using a genetic algorithm and linear algebra
… meet is electric load economically. The optimal power flow problem (OPF) problem is an optimization problem, in which the utility strives to minimize its costs while satisfying all of its constraints. A genetic algorithm (GA)---a specific type of artificial intelligence-is employed to perform …
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Optimal allocation of distributed generation for power loss reduction and voltage profile improvement
… of DG integration by optimal allocation in a power system network. These benefits include electrical power losses reduction and voltage profile improvement. Optimal DG location and sizing in a power system distribution network with the aim of reducing system power losses and improving the …
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Control and operation of offshore wind farms connected with diode rectifier HVDC systems
Due to the advantage of abundant space and more consistent wind speed, interest in offshore wind energy has significantly increased. To reduce the cost related to offshore wind power integration, this thesis investigates the control, modelling and operation of offshore wind farms connected with …
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Modeling, control and stability analysis of VSC-HVDC links embedded in a weak multi-machine AC system.
… the small-signal dynamic performance of high voltage direct current (HVDC) transmission links based on voltage source converter (VSC) technology operating in parallel with the existing longitudinal Australian power system. This thesis presents the principle design methodology to achieve robust …
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Coordinated active power reduction strategy for voltage rise mitigation in LV distribution network
… energy systems by the utility, customers, and the third party into the electric power system, most especially in the MV and LV distribution networks grew over the last decade due to the liberalization of the electricity market, rising energy demand, and increasing environmental concern. The …
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Secure Gaussian sampling for lattice-based signatures: new directions for reaching high standard deviation
… of these primitives is the Gaussian sampler - a random number generator producing Gaussian-distributed values. The work in this thesis aims to explore candidate algorithms for the secure sampling of Gaussian distributions with high standard deviation.<br/><br/>The sampling methods chosen for this …
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Offshore hybrid power plants with wind energy, photovoltaic and energy storage
Large centralized conventional power plants, although robust and reliable, have numerous disadvantages. The use of distributed generation has increased to fulfill the growing energy demand, and to reduce the distance between generation and consumption. Consequently, hybrid energy systems that …
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Análisis de la Calidad de Energía de la Planta 5 de la Compañía Proeléctricos
… 5, en la cual se producen cajas eléctricas empleando equipos que fueron adquiridos de segunda mano. En la Planta 5 no se llevan a cabo monitoreos o registros sobre el consumo de energía, con lo cual se estima, se estén generando pérdidas económicas por ineficiencias en el sistema. Con el fin de …