Dissertations / Theses on the topic 'Electric power processes'
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Song, Yang. "Electrostatically controlled enzymatic reaction, metabolic processes and microbial generation of electric power." Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1398685271.
Full textSmith, William Corbett. "Analysis of variances in electric power system simulation for production cost." Ohio : Ohio University, 1991. http://www.ohiolink.edu/etd/view.cgi?ohiou1173467167.
Full textCallwood, Concha Maria. "The role of legislative processes and electric utilities in effecting global environmental goals." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11182008-063050/.
Full textAndrews, Clinton James. "Improving the analytics of open planning processes : scenario-based multiple attribute tradeoff analysis for regional electric power planning." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13566.
Full textSear, David Ayres. "Sediment transport processes in riffle-pool sequences and the effects of river regulation for hydro-electric power within the North Tyne." Thesis, University of Newcastle Upon Tyne, 1992. http://hdl.handle.net/10443/325.
Full textGonzález, Zumba Jorge Andrés. "Dynamic Modeling and Stability Analysis of Stochastic Multi-Physical Systems Applied to Electric Power Systems." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/158558.
Full text[CA] La naturalesa aleatòria que caracteritza alguns fenòmens en sistemes físics reals (e.g., enginyeria, biologia, economia, finances, epidemiologia i uns altres) ens ha plantejat el desafiament d'un canvi de paradigma del modelatge matemàtic i l'anàlisi de sistemes dinàmics, i a tractar els fenòmens aleatoris com a variables aleatòries o processos estocàstics. Aquest enfocament nou ha portat com a conseqüència noves especificitats que la teoria clàssica del modelatge i anàlisi de sistemes dinàmics deterministes no ha pogut cobrir. Afortunadament, meravelloses contribucions, realitzades sobretot en l'últim segle, des del camp de les matemàtiques per científics com Kolmogorov, Langevin, Lévy, Itô, Stratonovich, només per nomenar alguns; han obert les portes per a un estudi ben fonamentat de la dinàmica de sistemes físics pertorbats per soroll. En la present tesi es discuteix l'ús d'equacions diferencials algebraiques estocàstiques (EDAEs) per al modelatge de sistemes multifísicos en xarxa afectats per pertorbacions estocàstiques, així com l'avaluació de la seua estabilitat asimptòtica a través d'exponents de Lyapunov (ELs). L'estudi està enfocat en EDAEs d-index-1 i la seua reformulació com a equacions diferencials estocàstiques ordinàries (EDEs). Fonamentats en la teoria ergòdica, és factible analitzar els ELs a través de sistemes dinàmics aleatoris (SDAs) generats per EDEs subjacents. Una vegada garantida l'existència d'ELs ben definides, hem procedit a l'ús de tècniques de simulació numèrica per a determinar els ELs numèricament. Hem implementat mètodes numèrics basats en descomposició QR discreta i contínua per al còmput de la matriu de solució fonamental i el seu ús en el càlcul dels ELs. Les característiques numèriques i computacionals més rellevants de tots dos mètodes s'illustren mitjançant proves numèriques. Tota aquesta investigació sobre el modelatge de sistemes amb EDAEs i avaluació de la seua estabilitat a través d'ELs calculats numèricament, té una interessant aplicació en enginyeria. Aquesta és l'avaluació de l'estabilitat dinàmica de sistemes elèctrics de potència. En el present treball de recerca, implementem els nostres mètodes numèrics basats en descomposició QR per al test d'estabilitat dinàmica en dos models de sistemes elèctrics de potència d'una-màquina bus-infinit (OMBI) afectats per diferents pertorbacions sorolloses. L'anàlisi en xicotet-senyal evidencia el potencial de les tècniques proposades en aplicacions d'enginyeria.
[EN] The random nature that characterizes some phenomena in the real-world physical systems (e.g., engineering, biology, economics, finance, epidemiology, and others) has posed the challenge of changing the modeling and analysis paradigm and treat these phenomena as random variables or stochastic processes. Consequently, this novel approach has brought new specificities that the classical theory of modeling and analysis for deterministic dynamical systems cannot cover. Fortunately, stunning contributions made overall in the last century from the mathematics field by scientists such as Kolmogorov, Langevin, Lévy, Itô, Stratonovich, to name a few; have opened avenues for a well-founded study of the dynamics in physical systems perturbed by noise. In the present thesis, we discuss stochastic differential-algebraic equations (SDAEs) for modeling multi-physical network systems under stochastic disturbances, and their asymptotic stability assessment via Lyapunov exponents (LEs). We focus on d-index-1 SDAEs and their reformulation as ordinary stochastic differential equations (SDEs). Supported by the ergodic theory, it is feasible to analyze the LEs via the random dynamical system (RDSs) generated by the underlying SDEs. Once the existence of well-defined LEs is guaranteed, we proceed to the use of numerical simulation techniques to determine the LEs numerically. Discrete and continuous QR decomposition-based numerical methods are implemented to compute the fundamental solution matrix and use it in the computation of the LEs. Important numerical and computational features of both methods are illustrated through numerical tests. All this investigation concerning systems modeling through SDAEs and their stability assessment via computed LEs finds an appealing engineering application in the dynamic stability assessment of power systems. In this research work, we implement our QR-based numerical methods for testing the dynamic stability in two types of single-machine infinite-bus (SMIB) power system models perturbed by different noisy disturbances. The analysis in small-signal evidences the potential of the proposed techniques in engineering applications.
Mi agradecimiento al estado ecuatoriano que, a través del Programa de Becas para el Fortalecimiento y Desarrollo del Talento Humano en Ciencia y Tecnología 2012 de la Secretaría Nacional de Educación Superior, Ciencia y Tecnología (SENESCYT), han financiado mis estudios de doctorado.
González Zumba, JA. (2020). Dynamic Modeling and Stability Analysis of Stochastic Multi-Physical Systems Applied to Electric Power Systems [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/158558
TESIS
Gonçalves, Orlando Augusto Vieira. "Gestão do consumo de energia elétrica: estudo de caso num instituto de pesquisa na cidade do Rio de Janeiro." Universidade Federal Fluminense, 2016. https://app.uff.br/riuff/handle/1/4322.
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A crise energética tem ganhado bastante visibilidade na sociedade, nas empresas privadas e também nos órgãos públicos, suscitando ações necessárias para a redução do consumo de água e de energia elétrica. A pesquisa procura identificar a problemática do consumo de energia elétrica, com suas causas e efeitos, no contexto da crise hidroelétrica brasileira. Esta pesquisa tem por objetivo geral analisar e discutir as principais ações que devem ser tomadas para se obter a redução do consumo de energia elétrica em ambientes competitivos. Para tanto, tem como objetivos específicos: fazer uma revisão na literatura sobre a gestão do consumo de energia e identificar um conjunto de critérios que permitam avaliar a gestão de energia; estudar os modelos relatados na literatura com a indicação de ações que contemplem o uso racional e eficiente da energia elétrica; aplicar no estudo de caso os critérios encontrados na literatura e propor ações de melhoria e gestão eficaz do consumo elétrico ajustado a um Instituto de Pesquisa de uma Autarquia Federal no Rio de Janeiro. Uma revisão da literatura nas bases Scopus e SciELO foi realizada para dar suporte à construção desse modelo. Foi utilizado um questionário para definir e classificar o conjunto de critérios que contribuem para a redução do consumo no modelo utilizado. Um grupo de especialistas foi formado para validar os problemas encontrados e opinar sobre as soluções propostas. O método da pesquisa é indutivo de natureza exploratória e descritiva com abordagem quali-quantitativa. Os resultados da revisão da literatura apontaram para nove critérios relevantes e mostram que é possível alcançar uma redução no consumo de energia a partir do estudo desses critérios e de sua correlação com as variáveis coletadas no estudo de caso. Os resultados obtidos do questionário que foi aplicado junto aos especialistas no estudo de caso excluíram os três critérios menos relevantes, através da aplicação do Diagrama de Pareto. A pesquisa contribui para o desenvolvimento de uma metodologia para avaliação de ações visando o uso racional da energia elétrica. Contribui também para ações de planejamento sustentável que possam auxiliar as tomadas de decisão nos níveis operacional e gerencial num contexto de crise hidroelétrica.
The energy crisis has gained considerable visibility in society, in private companies and also in public agencies, provoking actions necessary to reduce water and electricity consumption. The research seeks to identify the problem of the consumption of electric energy, with its causes and effects, in the context of the Brazilian hydroelectric crisis. This research has as general objective to analyze and discuss the main actions that must be taken to obtain the reduction of the consumption of electric energy in competitive environments. To do so, it has specific objectives: to review the literature on the management of energy consumption and to identify a set of criteria for assessing energy management; To study the models reported in the literature with the indication of actions that contemplate the rational and efficient use of electric energy; To apply in the case study the criteria found in the literature and to propose actions of improvement and effective management of the adjusted electric consumption to a Research Institute of a Federal Autarchy in Rio de Janeiro. A review of the literature on Scopus and SciELO bases was carried out to support the construction of this model. A questionnaire was used to define and classify the set of criteria that contribute to the reduction of consumption in the model used. A group of experts was formed to validate the problems encountered and to give an opinion on the proposed solutions. The research method is inductive of an exploratory and descriptive nature with a qualitative-quantitative approach. The results of the literature review pointed to nine relevant criteria and show that it is possible to achieve a reduction in energy consumption based on the study of these criteria and their correlation with the variables collected in the case study. The results obtained from the questionnaire that was applied to the experts in the case study excluded the three less relevant criteria through the application of the Pareto Diagram. The research contributes to the development of a methodology for the evaluation of actions aimed at the rational use of electric energy. It also contributes to sustainable planning actions that can aid decision making at the operational and managerial levels in a context of hydroelectric crisis.
Swaminathan, Shiva. "The influence of initial conditions on power system production costing - A markovian approach." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1178904364.
Full textFetzek, Charles A. "Behavior-based power management in autonomous mobile robots." Wright-Patterson AFB : Air Force Institute of Technology, 2008. http://handle.dtic.mil/100.2/ADA487084.
Full textЗаболотній, Денис Ігорович. "Методи виявлення ферорезонансних процесів в електричних мережах з великими струмами замикання на землю." Master's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/31661.
Full textThe master's dissertation consists of an explanatory note and a graphic part. The explanatory note is made on page 216 of A4 format, which includes 87 chart and 75 figures. The graphic part contains 8 sheets or technical drawings of A1 format. In the master's thesis the project of the district electric network 110 kV and the electrical part of the substation 110/35/10 kV was executed. A startup project has been developed, issues of relay protection and labor protection have been considered. The application of ferroresonance processes is investigated.
Сиротин, Юрий Александрович. "Компенсация и учет реактивной мощности в электротехнических системах с несимметричными режимами." Thesis, НТУ "ХПИ", 2014. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21116.
Full textThesis for a Doctor’s degree in Engineering Sciences by specialty 05.09.03 - Electrical Engineering Complexes and Systems. - National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2015. The dissertation is devoted an important scientific and technical issues to improve the power quality of supply and consumption (SC) in three-phase networks through further development of die power theory, development of methods and ways of compensation, proposals for the accounting and payment of the inactive components of the apparent power (AP). A generalized mathematical model (GMM) of electric power processes (EPP) in a 3-phase SC scheme was developed. The model of 3-wire circuit is provided by a special (О-balanced) mode of the model 4-wire circuit The developed GMM classifies the SC modes using the vectorial instantaneous power (IP) and summarizes the class of models used in the theory of IP. For sinusoidal mode with asymmetric voltage the refines vectorial mathematical model (VMV) 3-phasors (complex rms vectors) was created. The analytical expressions for the integral characteristics of the classified modes are founded and their relationship with standard IP and vectorial IP are established. With asymmetrical voltage and asymmetrical loading a sinusoidal mode can be both unbalanced and pulsed. Each mode is represented by its power equation and the equivalent orthogonal decomposition of the 3-phase current Both decompositions are used to create the optimal mode of SC with a constant IP at asymmetrical voltage. The proposed compensator provides the non-puised energy supply with the highest possible power factor and with the same average (active) power as the initial current. Based on the evaluation and calculation of the power equation components of a unbalanced mode was developed a methodology for calculating the loss of the measuring selection. A methodology and technique of analytical calculation of additional losses on the passport data of the connected electrical equipment was proposed. Formulated and proved offers on differential measurement and payment of the energy components of AP will stimulate consumer sets the compensator, and provide a reliable methodology for improving the quality of SC (within unbalance loading and voltage).
Belock, Keith Allan. "An energy audit manual for small manufacturing companies with a case study of Maugus Manufacturing Company." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1179851925.
Full textMousavi, Takami Kourosh. "Process Control and Simulation of Ferromagnetic Strip in the Power Transformers and Electrical Machines Applications : Electric power systems." Doctoral thesis, Västerås : School of Sustainable Development of Sociaty and Technology, Mälardalen University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-6648.
Full textBennett, Fiona. "Electrostatic charge phenomena in powder processes for dry powder inhalers." Thesis, University of Sunderland, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365417.
Full textHolmgren, Åke J. "Quantitative vulnerability analysis of electric power networks." Doctoral thesis, KTH, Transporter och samhällsekonomi, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3969.
Full textQC 20100831
Abur, Ali. "Knowledge-based power flow models and array processor-based power flow solutions for fast prediction of system states /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487261553057511.
Full textGlöckner, Reinhard Jörg. "Power transfer optimised automatic matching networks." Thesis, Northumbria University, 2009. http://nrl.northumbria.ac.uk/1622/.
Full textAmira, Sihem. "Electrical power system load flow using a distributed array processor." Thesis, Queen Mary, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267799.
Full textWang, Cai Johnson R. Wayne. "High temperature high power SiC devices packaging processes and materials development." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/doctoral/WANG_CAI_24.pdf.
Full textHuang, Chih-Jung. "Opto-electronic class AB microwave power amplifier using photoconductive switch technology." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4458.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (April 26, 2007) Vita. Includes bibliographical references.
Morris, Randy W. Jr. "PROPEL: Power & Area-Efficient, Scalable Opto-Electronic Network-on-Chip." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1244146228.
Full textHudson, Robert Dearn. "Development of an integrated co-processor based power electronic drive / by Robert D. Hudson." Thesis, North-West University, 2008. http://hdl.handle.net/10394/3723.
Full textThesis (M.Ing. (Electrical Engineering))--North-West University, Potchefstroom Campus, 2009.
Van, Papendorp J. F. "Digital control of line-interactive UPS." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6537.
Full textENGLISH ABSTRACT: The digital control of UPS systems has been difficult in the past due to a lack of DSP technology. It was for this reason not possible to establishing the necessary control to regulate the voltages and currents of the UPS systems. Recent advances in DSP technology have however provided the means of establishing central control of the UPS system as well as incorporating more complex closed-loop control algorithms by utilising a single floating-point DSP. Closed-loop control strategies are investigated and the central control of a line-interactive UPS is established in this study. Both the status of the physical system as well as various system parameters are controlled. The system both regulates and charges the storage batteries when the main utility supply is maintained. In the event that the utility fails, the converter instantaneously changes power flow towards the load with the aim of maintaining an uninterrupted voltage supply. Several closed-loop deadbeat based control strategies are investigated for the regulation of the inductor current. A solution for the regulation of the DC-link is also developed and implemented. Furthermore, an intensive study is done on the regulation of the voltage supplied to the load in the event that the utility supply fails. The investigation is initially approached by considering classical control theory. Although these control strategies provided sufficient results, a predictive strategy that is based on the physical conditions of the switching converter is finally investigated to establish closed loop control of the output voltage. This resulted in a high-bandwidth voltage controller capable of maintaining control under a wide-array of load conditions.
AFRIKAANSE OPSOMMING: Die digitale beheer van UPS stelsels was moeilik in the verlede as gevolg van 'n gebrek aan DSP tegnologie. Dit was vir hierdie rede nie moontlik om beheer te kon bewerkstelling ten einde die spannings and strome in the UPS stelsels te kon reguleer nie. Onlangse vordering in DSP tegnologie het egter dit moontlik gemaak om sentrale beheer van die UPS stelsel te bewerkstellig sowel as om meer komplekse geslote lus beheer algoritmes te inkorporeer met behulp van 'n enkele DSP. Geslote lus beheer strategiëe word ondersoek en die sentrale beheer van die line-interaktiewe UPS word bewerkstellig in hierdie studie. Beide die huidige toestand van die fisiese stelsel sowel as die verskeie parameters word beheer. Die stelsel beide laai en reguleer die batterye terwyl die hooftoevoer onderhou word. In die geval dat die hooftoevoer faal, word die omsetter se rigting van drywingsvloei verander om die las te voorsien van 'n ononderbroke spannings toevoer. Verskeie geslote-lus “deadbeat” beheer strategiëe word ondersoek vir die regulasie van die induktor stroom. 'n Oplossing vir die regulasie van die GS-koppervlak word ook ontwikkel en geïmplementeer. Verder word 'n intensiewe studie gedoen op regulasie van die spanning wat aan die las gevoer word in die geval dat die hooftoevoer faal. Hierdie ondersoek word aanvanklik benader deur klassieke beheer teorie te bestudeer. Alhoewel hierdie beheer strategiëe voldoene resultate gebied het, was 'n voorspel beheerstrategie gebaseer op die fisiese toestand van die omsetter finaal ondersoek. Die resultaat is 'n hoë-bandwydte spannings beheerder wat daartoe instaat is om beheer te handhaaf onder 'n verskeidenheid van lastoestande.
Alcázar, Ortega Manuel. "Evaluation and Assessment of New Demand Response Products based on the use of Flexibility in Industrial Processes: Application to the Food Industry." Doctoral thesis, Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/10078.
Full textAlcázar Ortega, M. (2011). Evaluation and Assessment of New Demand Response Products based on the use of Flexibility in Industrial Processes: Application to the Food Industry [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/10078
Palancia
Matsukevich, I. V., and A. I. Klyndyuk. "Processes Occurring at Preparation of Ca3Co4O9+ Ceramics by Means of Different Solution Methods, and Its Properties." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35255.
Full textPEREIRA, LUIZ A. T. "Desenvolvimento de processos de reciclagem de cavacos de Zircaloy via refusão em forno elétrico a arco e metalurgia do pó." reponame:Repositório Institucional do IPEN, 2014. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23302.
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Tese (Doutorado em Tecnologia Nuclear)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
Ma, Kai. "Power Constrained Performance Optimization in Chip Multi-processors." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1373297788.
Full textZhang, Bin. "FPGA Design of a Multicore Neuromorphic Processing System." University of Dayton / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1461694994.
Full textGuilhoto, João Vitor de Araújo 1983. "Representação trifásica de desequilíbrios estruturais e operacionais em sistema de média tensão de distribuição." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260676.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
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Resumo: A complexidade crescente dos estudos em sistemas de distribuição demanda uma formulação e modelagem capazes de agregar os desequilíbrios estruturais e operacionais dos sistemas elétricos de distribuição aos resultados das condições operacionais em regime permanente. Neste trabalho, aborda-se a representação trifásica em sistemas elétricos de média tensão de distribuição, considerando as particularidades dos sistemas trifásicos, bifásicos e monofásicos (MRT); e desenvolvendo os modelos dos circuitos, cargas, bancos de capacitores, transformadores e bancos de reguladores de tensão. Visando estabelecer o futuro vínculo dos modelos desenvolvidos com as sistemáticas existentes de determinação das condições operacionais dos sistemas elétricos de média tensão de distribuição, adota-se formulação matricial generalizada de correlação das correntes e tensões nodais. Tal formulação torna possível explorar e analisar os desequilíbrios estruturais e operacionais
Abstract: The increase complexity of power distribution analysis demands formulation and modeling that are capable to integrate structural and operational unbalance to steady state operational conditions. In this work the three-phase representation on distribution systems is addressed taking in account three-phase, two-phase and single-phase systems particularities; and developing the models for lines, loads, capacitor banks, transformers and step-voltage regulators. To achieve the future link between the models and existing techniques to determine the distribution systems operational conditions, it's chosen the formulation based on generalized matrices that establish the correlation of currents and nodal voltages. This formulation makes possible to explore and analyze the structural and operational unbalances
Mestrado
Energia Eletrica
Mestre em Engenharia Elétrica
Paula, Alexandre de. "Sistema de medição de demanda e qualidade de energia elétrica." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-27102017-141628/.
Full textElectric energy meters have been changing from simple instruments for dedicated applications to very functional ones. Since their invention, the meters has changed accordingly to the technology resources and market requirements. Nowadays, the digital signal processors have been widely employed in this area, allowing a huge amount of functions to be integrated into only one instrument, besides of the implementation of more complex algorithms. Such functions usually include evaluation of many electrical parameters, remote communication, connection to digital systems and others. This work is about a study and a development of an electric energy meter based on the digital signal processor DSP56002 by Motorola. Among the functions that are incorporated to the meter, it points out the monitoring of electric power quality, once it will be a future trend.
Sen, Shreyas. "Design of process and environment adaptive ultra-low power wireless circuits and systems." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45755.
Full textLi, Jun 1974. "Learning average reward irreducible stochastic games [electronic resource] : analysis and applications / by Jun Li." University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000136.
Full textTitle from PDF of title page.
Document formatted into pages; contains 111 pages.
Thesis (Ph.D.)--University of South Florida, 2003.
Includes bibliographical references.
Text (Electronic thesis) in PDF format.
ABSTRACT: A large class of sequential decision making problems under uncertainty with multiple competing decision makers/agents can be modeled as stochastic games. Stochastic games having Markov properties are called Markov games or competitive Markov decision processes. This dissertation presents an approach to solve non cooperative stochastic games, in which each decision maker makes her/his own decision independently and each has an individual payoff function. In stochastic games, the environment is nonstationary and each agent's payoff is affected by joint decisions of all agents, which results in the conflict of interest among the decision makers. In this research, the theory of Markov decision processes (MDPs) is combined with the game theory to analyze the structure of Nash equilibrium for stochastic games. In particular, the Laurent series expansion technique is used to extend the results of discounted reward stochastic games to average reward stochastic games.
ABSTRACT: As a result, auxiliary matrix games are developed that have equivalent equilibrium points and values to a class of stochastic games that are irreducible and have average reward performance metric. R-learning is a well known machine learning algorithm that deals with average reward MDPs. The R-learning algorithm is extended to develop a Nash-R reinforcement learning algorithm for obtaining the equivalent auxiliary matrices. A convergence analysis of the Nash-R algorithm is developed from the study of the asymptotic behavior of its two time scale stochastic approximation scheme, and the stability of the associated ordinary differential equations (ODEs). The Nash-R learning algorithm is tested and then benchmarked with MDP based learning methods using a well known grid game. Subsequently, a real life application of stochastic games in deregulated power market is explored.
ABSTRACT: According to the current literature, Cournot, Bertrand, and Supply Function Equilibrium (SFEs) are the three primary equilibrium models that are used to evaluate the power market designs. SFE is more realistic for pool type power markets. However, for a complicated power system, the convex assumption for optimization problems is violated in most cases, which makes the problems more difficult to solve. The SFE concept in adopted in this research, and the generators' behaviors are modeled as a stochastic game instead of one shot game. The power market is considered to have features such as multi-settlement (bilateral, day-ahead market, spot markets and transmission congestion contracts), and demand elasticity. Such a market consisting of multiple competing suppliers (generators) is modeled as a competitive Markov decision processes and is studied using the Nash-R algorithm.
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Zhao, Zhiyong. "Angular Dependence of the Stopping Processes and the Yields of Ion-induced Electron Emission from Channeled MEV Protons in <100> Silicon Foils." Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc279025/.
Full textMainprize, Stephen. "Incorporating electronically monitored house arrest into British Columbia corrections : |b the processes of power, knowledge, and regulation in the debut of a punishment technique." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30638.
Full textArts, Faculty of
Sociology, Department of
Graduate
Hansson, Martin. "Low-Power Multi-GHz Circuit Techniques for On-chip Clocking." Licentiate thesis, Linköping : Linköping University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7545.
Full textNarra, Sneha Prabha. "Melt Pool Geometry and Microstructure Control Across Alloys in Metal Based Additive Manufacturing Processes." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/914.
Full textAlves, Lourenço Gobira. "Analise exergoeconomica e otimização de diferentes processos de produção de hidrogenio a partir de gas metano." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265111.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
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Resumo: A alta dos preços do petróleo aliada ao aumento da participação do gás natural na matriz energética nacional força a sociedade a pensar em usos mais racionais para o gás, tanto por necessidades econômicas quanto ambientais. O hidrogênio é apontado por alguns autores como combustível do futuro, portanto aproveitar o gás natural como matéria-prima para produzir hidrogênio é uma das alternativas para melhor uso do gás. Este trabalho faz a análise exergoeconômica de dois processos básicos de produção de hidrogênio a Reforma a Vapor do Metano, SMR, e a Reforma Autotérmica do Metano, AtR, usando a Teoria do Custo Exergético, TEC, e a Análise Funcional, AF. É proposta a introdução de cogeração usando uma turbina movida a gás natural e outra movida a gás de síntese para os dois processos, gerando quatro casos de estudo onde a possibilidade de produzir excedentes para venda foi considerada. Foi feita a otimização dos processos com dois objetivos: busca da maior produção de hidrogênio e busca da menor geração de irreversibilidade. Os resultados mostram que a cogeração é uma possibilidade a ser estudada com cuidado, pois o custo de produção da eletricidade precisa ser competitivo com o mercado energético brasileiro. Os quatro casos de estudo mostraram boa flexibilidade para otimização dos processos
Abstract: The prices of Petroleum allied to the increase of the participation of the Natural Gas in the national energy matrix have forced the society to search for more rational uses for the gas by economic and environmental reasons. According to some authors, hydrogen is the fuel of the future and the production of hydrogen from natural gas is an alternative to improve the gas uses. This work performs an exergoeconomic analysis of two basic processes to produce hydrogen, Stem Methane Reforming, SMR, and Autothermal Reforming, AtR, using the Theory of Exergetic Cost, TEC, and the Functional Analysis, AF. Two cogeneration possibilities in the processes are also considered, resulting in four study cases with the possibility of producing surplus of electric energy to sell. And an optimization study is performed to improve the hydrogen production and reduce the irreversibility. The results shown that cogeneration is a useful possibility but must be applied according to the Brazilian energy market. The optimization process increased the results in the four cases
Doutorado
Termica e Fluidos
Doutor em Engenharia Mecânica
Kremes, William de Jesus. "Retificador bridgeless SEPIC PFC com rastreamento de máxima potência para processar energia elétrica de um sistema eólico de pequeno porte." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2413.
Full textThe main objective of this dissertation is to propose a three-phase bridgeless SEPIC PFC rectifier, based on a single-phase converter presented in Costa (2015). As a secondary objective and in order to assimilate the operation of the converter, the single-phase converter is studied, and an alternative modulation is proposed for controlling the transistors compared with a traditional PWM modulation, in order to obtain results that justify or not its use in the converter proposed. Another secondary objective is the application of the proposed rectifier in a small-scale wind turbine system, in order that this converter can process the electric energy generated; also is proposed a methodology of control of maximization (MPPT) of generated power. To develop this study, is presented the theoretical analysis with each modulation, followed by design equations. Subsequently are shown the results of numerical simulation and experimental for the two modulations, being able to compare efficiency, THD and power factor. The nominal conditions for the single-phase converter are: rms input voltage of 220 V, output voltage of 200 V, switching frequency of 50 kHz and output power of 500 W. Contextualizing the application of the three-phase rectifier: has an introduction of the main wind power concepts, followed by an overview of wind energy in the world and in Brazil. Then one can see the operation of wind turbines and electrical generators. Next, is propose a system based on a three-phase bridgeless PFC SEPIC rectifier in DCM processing the energy from the wind turbine. This proposed model is then simulated and implemented using the MPPT method to control it, to prove the model and the proposed theory. The specifications for the three-phase converter are: rms input voltage of 90 V, output voltage of 250 V, switching frequency of 25 kHz and output power of 1500 W.
Goldner, Cláudia Guio Bragato. "Geração energética e processos tecnológicos sustentáveis: impasses e alternativas para o Brasil." Universidade Federal do Espírito Santo, 2002. http://repositorio.ufes.br/handle/10/6010.
Full textEste estudo dedica-se à análise da inter-relação entre paradigma tecnológico subjacente à matriz energética brasileira e meio ambiente, centrando-se no segmento de tecnologias de geração de eletricidade, numa perspectiva de crescimento sustentável. Procura refletir se a crise brasileira de suprimento energético evidenciada em abril de 2001 e as subseqüentes ações e busca de soluções para essa crise tendem a potencializar ou a obstaculizar o desenvolvimento do setor e da economia brasileira, numa perspectiva de crescimento econômico com eqüidade social e proteção ambiental, conforme preconizado no conceito de desenvolvimento sustentável. As opções tecnológicas para a geração de energia atualmente em uso e em discussão são analisadas em relação a seus aspectos positivos e negativos, em termos de geração de externalidades ambientais. A inovação tecnológica é enfocada como alternativa capaz de mudar o paradigma dos hidrocarbonetos predominante no mundo para a geração de energia elétrica. Efetua um resgate histórico da constituição e desenvolvimento do setor, das principais reformas do ambiente institucional do setor elétrico brasileiro até a atual configuração, com o intuito de conhecer os novos atores envolvidos no processo regulatório, de integração e de suporte. Os condicionantes internos e externos são analisados como fatores capazes de contribuir para, ou de retardar a adoção de uma trajetória sustentável para o setor elétrico nacional. A conclusão a que se chega é de que, apesar de o Brasil se preocupar em percorrer a trajetória de uma matriz energética limpa, num primeiro momento propiciou a adoção do Programa Prioritário de Termeletricidade que, mesmo sendo de caráter complementar ao atual parque gerador, poderá contribuir para uma dependência energética de um combustível fóssil poluente, em detrimento de outras possibilidades menos impactantes, sem garantir a não-ocorrência de futuras crises de suprimento. A mudança nos conceitos e valores da sociedade contribuirá para reestruturar a economia energética global, forçando o aumento da parcela das fontes renováveis dentro da matriz energética mundial, e permitirá a continuação do progresso econômico da humanidade, diante de uma demanda de energia maior e continuada no futuro.
The following research approaches the interaction between the technological paradigm subjacent to the Brazilian energetic power nucleus and environment, centralising on the electricity generation centre, in a sustainable growth perspective. One searches to think over whether the Brazilian power supply crisis noticed in April 2001 and consequent actions and as well as quests for solutions to the resolution of the same, tends to solve or block the sector development and the Brazilian economy in a perspective of economic growth associated to social equity and environmental protection, according to what s been prioritised by sustainable development concept. Hence, the technological options for currently used powergenerating techniques and those in discussion are analysed regarding its positive and negative aspects in terms of generating environmental external influences. Technological innovation is focused as an alternative capable of changing the hydrocarbon paradigm predominant in the world power supply generation. One does a historical rescue of the sector development, also approaching the main reforms on the Brazilian electric institutional sector up to the current configuration aimed at knowing the new sector agents involved in the regulatory process, integration, and support. Through the analysis of internal or external conditioners, one can figure their capability of contributing or delaying the adoption of a sustainable trajectory for the national electric sector. The achieved conclusion is, despite worrying on maintaining its energetic nucleus clean, Brazil, at a first moment, provided the acquiring of a Priority Thermoelectric Program , that even though having a complementary character to the actual generating park, will be able to contribute to an energetic dependence on a pollutant fossil combustible, amongst other existent possibilities, without ensuring the inexistence of the future supply crisis. The transformation in concepts, as well as society values will indeed contribute for the restructuring of global energetic economy, boosting the renewable sources portion within the world energetic nucleus and will allow humanity economic progress growth, facing a wider continuing power demand in the future.
Ghanavati, Goodarz. "Statistical Analysis of High Sample Rate Time-series Data for Power System Stability Assessment." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/333.
Full textJaafar, A. "Traitement de la mission et des variables environnementales et intégration au processus de conception systémique." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2011. http://tel.archives-ouvertes.fr/tel-00646708.
Full textARAUJO, FILHO OSCAR O. de. "Estudo comparativo de aços rápidos AISI M3:2 produzidos por diferentes processos de fabricação." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11457.
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Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
Woo, Dong Hyuk. "Designing heterogeneous many-core processors to provide high performance under limited chip power budget." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37294.
Full textKennedy, Matthew D. "Power-Efficient Nanophotonic Architectures for Intra- and Inter-Chip Communication." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1458232838.
Full textNordström, Tommy, and Alexander Arvidsson. "Ökad processkvalitet vid tillverkning av handhållna elverktyg med hjälp av tillämpad rotorsaksanalys." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210638.
Full textAtlas Copco är ett globalt svenskt industriföretag som bland annat utvecklar och tillverkar handhållna el- och tryckluftsdrivna verktyg för kunder inom fordons- och flygindustrierna, industriell tillverkning och underhåll, samt inom fordonsservice. Detta kandidatexamensarbete undersöker möjligheten att öka processeffektiviteten i företagets fabrik i Tierp genom att utöka möjligheterna att utföra ytterligare test av de verktyg som visar avvikelser vid sluttest. I fabriken genomförs idag omfattande tester av alla monterade elverktyg innan de skickas till kund. När en avvikelse upptäcks repareras verktyget genom att komponenter byts ut i en viss ordning. Genom att utöka möjligheterna till felsökning kan reparationsprocessen kortas ner. Utifrån en omfattande databas har en statistik sammanställning utförts som visar att cirka 47% av de verktyg som inte klarar sluttestet uppvisar samma felkod. Över 37% av dessa enheter repareras genom att byta verktygets huvudkort. Denna studie ger indikationer på att det i många fall inte är huvudkortet som är problemet utan felaktigheter i monteringen. Med hjälp av rotorsaksanalys, strukturerade intervjuer, enkäter och utveckling av testprotokoll samt en teststation har ett antal faktorer kunnat identifieras vilka kan bidra till en ökad processkvalitet. Undersökningen föreslår införande av en utökad testplattform som kan hjälpa reparatörerna i sitt arbete. Den föreslår även ett antal konstruktionsändringar i verktygen som omöjliggör en felaktig montering.
Chaing, Chia-Tsung. "Five-level inverter employing WRPWM switching scheme." Diss., University of Pretoria, 2005. http://upetd.up.ac.za/thesis/available/etd-07102008-081413/.
Full textEuxibie, Gaillandre Edwige. "Conceptualisation de la conduite du système production-transport-consommation." Grenoble INPG, 1993. http://www.theses.fr/1993INPG0165.
Full textChen, Shuyu. "rf power amplifier and oscillator design for reliability and variability." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5616.
Full textPh.D.
Doctorate
Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering
Oliveira, Adriano Gomes de Melo. "Avanço digital do Poder Judiciário: o rompimento das barreiras físicas da atuação territorial dos magistrados em razão do processo judicial eletrônico e a relativização do princípio do juiz natural." Universidade Federal do Tocantins, 2018. http://hdl.handle.net/11612/989.
Full textThis dissertation aimed to analyze the possibility of overcoming as physical barriers to the territorial jurisdiction of judges, with the purpose of adapting as social and structural changes to the new digital era, with no intention to follow as technological innovations and to implement a more efficient. The inductive and comparative method proves to be more viable for the development of technologies without right to power, as well as for the use of the electronic judicial process in the execution of judicial protection. A digital age brought a new definition about space and time, initiating a system of social interaction that was totally dynamic, fast and detached from physical territorial barriers. The judicial process is also a problem of reflection, it is not the property of the judicial protection, providing a faster justice and directed to accompany the essential aspects of the digital era. The electronic judicial process also allowed a better management of judicial processes, allowing effective monitoring of the legal proceedings. With the possibility of a magistrate acting unconnected to the physical barrier of territorial jurisdiction, it was intended to demonstrate the possibility of a single magistrate being able to act in several distinct districts, without which this situation violates the principle of the natural judge, fast and effective. The need to reorganize the distribution of competencies of the judicial units, uninstalling areas and sticks, the creation of judicial units for the Nucleus of Support to the Counties, and the strengthening of the Coordination of Strategic Management (COGES) aiming at greater planning with respect to judicial productivity.
Herbinet, Olivier. "Etude expérimentale et modélisation de la décomposition thermique de l'exo-tricyclo[5.2.1.0(2.6)]décane." Phd thesis, Institut National Polytechnique de Lorraine - INPL, 2006. http://tel.archives-ouvertes.fr/tel-00154552.
Full textrentre dans la composition de carburants utilisés en aéronautique, a été étudiée aux DCPR
dans le cadre du développement du système de refroidissement du moteur de véhicules
hypersoniques.
L'étude expérimentale de la décomposition thermique de cet alcane a été réalisée avec un
réacteur auto agité par jets gazeux, à pression atmosphérique, à haute dilution, pour des temps
de passage compris entre 0,5 et 6s et sur une large gamme de température (673-1173 K). Cette
étude a permis de mettre en évidence la formation de 53 produits de la réaction.
Un mécanisme de la pyrolyse de l'exo-tricyclo[5.2.1.02,6]décane a été développé (2789
réactions ; 929 espèces moléculaires, radicalaires et biradicalaires) et a été validé à partir des
résultats expérimentaux. L'analyse cinétique du mécanisme a permis de souligner
l'importance des réactions d'amorçage unimoléculaire sur la consommation du réactif.