Tesi sul tema "Renewable energy sources"
Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili
Vedi i top-50 saggi (tesi di laurea o di dottorato) per l'attività di ricerca sul tema "Renewable energy sources".
Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.
Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.
Vedi le tesi di molte aree scientifiche e compila una bibliografia corretta.
Romaniuk, O. "Renewable energy sources". Thesis, Видавництво СумДУ, 2009. http://essuir.sumdu.edu.ua/handle/123456789/13666.
Testo completoKondratyuk, O. V. "Renewable energy sources in Ukraine". Thesis, Видавництво СумДУ, 2009. http://essuir.sumdu.edu.ua/handle/123456789/13612.
Testo completoMalý, Jan. "Renewable Energy Sources Support Policy". Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-11041.
Testo completoJohnson, Darrin B. "Federal renewable-energy research and development funding and innovation /". View online, 2008. http://repository.eiu.edu/theses/docs/32211131423535.pdf.
Testo completoAshby, Scott John. "Remaining off-line : an investigation of Australia's reaction to renewable energy technology development /". Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09ENV/09enva823.pdf.
Testo completoYan, Zuanhong. "Control of fluctuating renewable energy sources : energy quality & energy filters". Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8568/.
Testo completoGriffin, James. "Improving cost-effectiveness and mitigating risks of renewable energy requirements". Santa Monica, CA : RAND, 2008. http://www.rand.org/pubs/rgs_dissertations/2008/RAND_RGSD236.pdf.
Testo completoTitle from title screen (viewed on Oct. 24, 2008). "This document was submitted as a dissertation in September 2008 in partial fulfillment of the requirements of the doctoral degree in public policy analysis at the Pardee RAND Graduate School." --T.p. Includes bibliographical references: p. 168-178.
Mendes, Barlach Leonardo. "Dynamic modelling of variable renewable energy generation sources". Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112066.
Testo completoCataloged from PDF version of thesis.
Includes bibliographical references (page 56).
Renewable energy is one of the most important technologies for decarbonizing the economy and fighting climate change. In recent years, wind energy has become cheaper and more widely adopted. However, the variable nature of wind production creates unique challenges that are not faced by conventional thermal technologies. Several studies to date have showed the decrease in economic value of wind energy as penetration increases due to this variable nature. Plus, they also show that high wind penetration favors intermediate energy sources such as natural gas. I claim however, that few of these studies have considered the dynamic behavior and feedbacks of these systems, including investment delays and learning curves. This thesis uses system dynamics models to simulate the long term changes in the electric grid for Texas. The goal is to test two hypothesis: that the economic value of wind energy decreases as penetration increases, and that variable wind production favors natural gas technologies. It does this by calculating how wind energy changes the shape of the net load duration curve for a given region. This affect changes the profitability of different technologies in unique ways, due to their different fix and variable costs. The conclusions of this thesis are consistent with the literature, with the caveat that they are highly dependent on assumptions regarding the learning curve for energy technologies. The economic value of wind decreases, but this effect can be compensated by lower costs, leading to a continuing adaptation. Faster Wind adoption also reduces the profitably of technologies with high fixed costs such as coal and nuclear, and favors intermediate and peaking sources such as natural gas.
by Leonardo Mendes Barlach.
S.M. in Engineering and Management
Jhala, Kumarsinh. "Coordinated electric vehicle charging with renewable energy sources". Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19767.
Testo completoDepartment of Electrical and Computer Engineering
Balasubramaniam Natarajan
Anil Pahwa
Electric vehicles (EVs) are becoming increasingly popular because of their low operating costs and environmentally friendly operation. However, the anticipated increase of EV usage and increased use of renewable energy sources and smart storage devices for EV charging presents opportunities as well as challenges. Time-varying electricity pricing and day-ahead power commitment adds another dimension to this problem. This thesis, describes development of coordinated EV charging strategies for renewable energy-powered charging stations at homes and parking lots. We develop an optimal control theory-based charging strategy that minimizes power drawn from the electricity grid while utilizing maximum energy from renewable energy sources. Specifically, we derive a centralized iterative control approach in which charging rates of EVs are optimized one at a time. We also propose an algorithm that maximizes profits for parking lot operators by advantageously utilizing time-varying electricity pricing while satisfying system constraints. We propose a linear programming-based strategy for EV charging, and we specifically derive a centralized linear program that minimizes charging costs for parking lot operators while satisfying customer demand in available time. Then we model EV charging behavior of Active Consumers. We develop a real-time pricing scheme that results in favorable load profile for electric utility by influencing EV charging behavior of Active Consumers. We develop this pricing scheme as a game between electric utility and Active Consumers, in which the electric utilities decide optimal electricity prices that minimize peak-to-average load ratio and Active Consumers decide optimal charging strategy that minimizes EV charging costs for Active Consumers.
Nielsen, Knut Erik. "Superconducting magnetic energy storage in power systems with renewable energy sources". Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10817.
Testo completoThe increasing focus on large scale integration of new renewable energy sources like wind power and wave power introduces the need for energy storage. Superconducting Magnetic Energy Storage (SMES) is a promising alternative for active power compensation. Having high efficiency, very fast response time and high power capability it is ideal for levelling fast fluctuations. This thesis investigates the feasibility of a current source converter as a power conditioning system for SMES applications. The current source converter is compared with the voltage source converter solution from the project thesis. A control system is developed for the converter. The modulation technique is also investigated. The SMES is connected in shunt with an induction generator, and is facing a stiff network. The objective of the SMES is to compensate for power fluctuations from the induction generator due to variations in wind speed. The converter is controlled by a PI-regulator and a current compensation technique deduced from abc-theory. Simulations on the system are carried out using the software PSIM. The simulations have proved that the SMES works as both an active and reactive power compensator and smoothes power delivery to the grid. The converter does however not seem like an optimum solution at the moment. High harmonic distortion of the output currents is the main reason for this. However this system might be interesting for low power applications like wave power. I
Kiljanov, Grigory. "Accumulation of energy in autonomous power plants using renewable energy sources". Thesis, KTH, Skolan för industriell teknik och management (ITM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264272.
Testo completoKilyanov G.M. Energilagring i autonoma kraftverk som använder förnybara energikällor, 2017 - s.105, 11 tabeller, 40 bild. Chef Bessel V.V., professor, Ph.D. Institutionen för termodynamik och termiska motorer. En analys av befintliga energilagringsenheter i världen utförs. Den vetenskapliga och tekniska grunden för energilagring. Enheten och driftsprincipen för ett autonomt kombinerat kraftverk med en energilagringsanordning beaktas. Baserat på den tekniska beräkningen valdes en optimal kombination av en vindgenerator, ett system av solpaneler och en reservoar, som kan ge pålitlig och oavbruten elproduktion. Projektets ekonomiska effektivitet på användningen av kombinerade medelkraftverk vid gasproduktionsanläggningar i avlägsna områden uppskattades. Slutsatser dras om att det är lämpligt att införa energisystem baserade på förnyelsebara källor med energilagringsenheter hos landets företag.
Peker, Zeynep Süel Akın. "Integrating renewable energy technologies into cities through urban planning: In the case of geothermal and wind energy/". [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/doktora/sehirplanlama/T000428.pdf.
Testo completoSakib, Nazmus. "Effects of incorporating renewable energy sources into the electricity grid". Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53485.
Testo completoAljaism, Wadah A., University of Western Sydney e School of Engineering and Industrial Design. "Control method for renewable energy generators". THESIS_XXX_EID_Aljaism_W.xml, 2002. http://handle.uws.edu.au:8081/1959.7/796.
Testo completoMaster of Electrical Engineering (Hons)
Mok, Hei-lun Allen. "An education and research centre on renewable energy". Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25947205.
Testo completoNinikas, Konstantinos. "Opportunities for renewable heat energy from shallow geothermal sources". Thesis, Glasgow Caledonian University, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.726798.
Testo completoShendryk, S. O. "Decision support in managment of hybrid renewable energy sources". Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65232.
Testo completoZenkert, Patrik, e Douglas Lowén. "Automatic control of renewable energy sources at varying load". Thesis, Uppsala universitet, Elektricitetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415098.
Testo completoAldaoudeyeh, Al Motasem. "Weak Power Grid Analysis for Renewable Energy Sources Integration". Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/31536.
Testo completoFolliero, Maria Gelsomina. "Energy Production and Storage from Renewable Sources through Electrocatalysis". Doctoral thesis, Università di Siena, 2018. http://hdl.handle.net/11365/1042757.
Testo completoSirca, Silvia <1992>. "Chinese Investments in Italy in energy from renewable sources". Master's Degree Thesis, Università Ca' Foscari Venezia, 2018. http://hdl.handle.net/10579/13880.
Testo completoHomon, Bohdan. "Combined power supply system converting unit with renewable sources". Thesis, Дніпропетровський національний університет залізничного транспорту ім. академіка В. Лазаряна, 2017. https://er.knutd.edu.ua/handle/123456789/9329.
Testo completoСтаття присвячена питанню впровадження відновлювальних джерел енергії (сонячна батарея, вітрові турбіни) в місцевих електричних системах. Покращення та широке розповсюдження поновлюваних джерел енергії розподіленої генерації є одним із способів підвищення енергетичної безпеки країни.
Статья посвящена вопросу внедрения возобновляемых источников энергии (солнечная батарея, ветровые турбины) в местных электрических системах. Улучшение и широкое распространение возобновляемых источников энергии распределенной генерации является одним из способов повышения энергетической безопасности страны.
Guduru, Giridhar Reddy. "Management of energy and power using renewable energy sources based on ZigBee". Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10004167.
Testo completoThe energy and power used at various areas like households and industries is increasing gradually due to many reasons and there is a need to sustain it. This project introduces a method to reduce the energy used in a household by considering the energy sources and the amount of energy used by the appliances concurrently. Modules are used to measure and check the energy utilized by the appliances using ZigBee. Energy is generated on a conventional basis using three sources: solar panel, wind mill and conventional power. An inverter and a battery are used to connect these sources to a grid. When a device is connected, the units of power consumed are computed and shown on the LCD using LPC2148 microcontroller. The output of the battery is connected to the controller, which shows the voltage of the battery and also selects the best source to be used. Modules use a 5V supply and the controller uses 3.3V power supply. Voltage is controlled with the help of a 7805 voltage regulator and the output of transformer is revised by a rectifier.
Shvets, O. "The influence of renewable energy sources on the prospects of nuclear energy". Thesis, Київський національний університет технологій та дизайну, 2018. https://er.knutd.edu.ua/handle/123456789/10804.
Testo completoAhmed, Rana. "Energy management and control for hybrid renewable energy sources in rural area". Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4353.
Testo completoThis thesis primarily proposes, an improved P&O based State-Flow MPPT algorithm featuring two degree of freedom, in which the event driven system (MPPT) behaviour is modelled by describing it in terms of transitions among states under certain conditions. Secondarily, an extended parallel operating State-Flowbased MPPT algorithm is further proposed to be a challenging solution for the independent control of the hybrid system, where continuous control characteristic can present during a certain working state while discrete one is indicated along state transitions. Two possible configurations for the hybrid system are proposed; two separate DC/DC converters and dual input single output converter (DISO) configurations. Finally it is proposed, DC system behaviour modelling using State-Flow leading to the whole control strategy design which concern RESs MPPT, RESs and BESS coordination, power system stability and DC bus voltage regulation.Simulation and experimental results validate the effectiveness and applicability of the proposed algorithm, both results show the superiority of the proposed State-Flow based MPPT in reducing the RESs power oscillations at steady-state in various operating conditions in addition to its faster start-up and transition operation without divergence from the MPP during sudden varying weather conditions
Scimone, Tommaso. "Energy Storage in Electric Power Generation Plant from Renewable Sources". Thesis, Università degli Studi di Catania, 2011. http://hdl.handle.net/10761/228.
Testo completoTse, Man-sze. "Benefits and costs of developing renewable energy in Hong Kong /". View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37120840.
Testo completoAhame, Edmund. "Statistical model for risk diversification in renewable energy". Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1008399.
Testo completoParvanyan, Tigran. "Renewable Portfolio Standard : an analysis of design and implementation issues /". Link to online version, 2005. https://ritdml.rit.edu/dspace/handle/1850/1139.
Testo completoKusakana, Kanzumba. "Optimal operation control of hybrid renewable energy systems". Thesis, Bloemfontein: Central University of Technology, Free State, 2014. http://hdl.handle.net/11462/670.
Testo completoFor a sustainable and clean electricity production in isolated rural areas, renewable energies appear to be the most suitable and usable supply options. Apart from all being renewable and sustainable, each of the renewable energy sources has its specific characteristics and advantages that make it well suited for specific applications and locations. Solar photovoltaic and wind turbines are well established and are currently the mostly used renewable energy sources for electricity generation in small-scale rural applications. However, for areas in which adequate water resources are available, micro-hydro is the best supply option compared to other renewable resources in terms of cost of energy produced. Apart from being capital-cost-intensive, the other main disadvantages of the renewable energy technologies are their resource-dependent output powers and their strong reliance on weather and climatic conditions. Therefore, they cannot continuously match the fluctuating load energy requirements each and every time. Standalone diesel generators, on the other hand, have low initial capital costs and can generate electricity on demand, but their operation and maintenance costs are very high, especially when they run at partial loads. In order for the renewable sources to respond reliably to the load energy requirements, they can be combined in a hybrid energy system with back-up diesel generator and energy storage systems. The most important feature of such a hybrid system is to generate energy at any time by optimally using all available energy sources. The fact that the renewable resources available at a given site are a function of the season of the year implies that the fraction of the energy provided to the load is not constant. This means that for hybrid systems comprising diesel generator, renewable sources and battery storage in their architecture, the renewable energy fraction and the energy storage capacity are projected to have a significant impact on the diesel generator fuel consumption, depending on the complex interaction between the daily variation of renewable resources and the non-linear load demand. V This was the context on which this research was based, aiming to develop a tool to minimize the daily operation costs of standalone hybrid systems. However, the complexity of this problem is of an extremely high mathematical degree due to the non-linearity of the load demand as well as the non-linearity of the renewable resources profiles. Unlike the algorithms already developed, the objective was to develop a tool that could minimize the diesel generator control variables while maximizing the hydro, wind, solar and battery control variables resulting in saving fuel and operation costs. An innovative and powerful optimization model was then developed capable of efficiently dealing with these types of problems. The hybrid system optimal operation control model has been simulated using fmincon interior-point in MATLAB. Using realistic and actual data for several case studies, the developed model has been successfully used to analyse the complex interaction between the daily non-linear load, the non-linear renewable resources as well as the battery dynamic, and their impact on the hybrid system’s daily operation cost minimization. The model developed, as well as the solver and algorithm used in this work, have low computational requirements for achieving results within a reasonable time, therefore this can be seen as a faster and more accurate optimization tool.
Templeton, Jeffrey. "Abandoned petroleum wells as sustainable/renewable sources of geothermal energy". Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121344.
Testo completoL'énergie géothermique est une technologie renouvelable émergente importante qui a le potentiel de fournir de l'énergie d'une source pratiquement illimitée. Le désavantage de l'énergie géothermique est l'ampleur du capital des forages qui sont requis pour accéder aux ressources plus chaudes. Utiliser les forages de pétrole abandonnés est une opportunité originale pour circonvenir ce désavantage. Cette thèse propose un modèle sophistiqué qui est capable de simuler le flux de chaleur à travers un échangeur de chaleur à tube double et le flux de chaleur à travers la masse rocheuse autour du forage. Le modèle sophistiqué est comparé avec le modèle analytique de source cylindrique, et deux autres modèles numériques et arrivent aux résultats comparables. Le but de cette modèle sophistiqué est de fournir une représentation précise et réaliste du flux de chaleur et la distribution de la température pour un échangeur de chaleur situé dans un forage de pétrole abandonné. Les effets de la température d'entrée de fluide, l'isolation, la conductivité thermique de la masse rocheuse, le taux de débit massique du fluide actif, et le mouvement vertical de l'eau souterraine sur la durabilité et performance de la conception sont enquêtés. Un modèle de puissance constante est aussi proposé pour l'extraction de l'énergie géothermique encore plus durable.
Kaloud, Tobias. "Renewable Energy Sources and Investment in European Power Transmission Networks". WU Vienna University of Economics and Business, 2017. http://epub.wu.ac.at/5576/1/wp249.pdf.
Testo completoSeries: Department of Economics Working Paper Series
Khazaei, Javad Khazaei. "Distributed Coordination and Control of Renewable Energy Sources in Microgrids". Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6274.
Testo completoMilto, Yuliya <1985>. "Legal Framework of Renewable Energy Sources in the European Union". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7937/1/Milto_Yuliya_tesi.pdf.
Testo completoReed, Daniel L. "Environmental and renewable energy innovation potential among the states : state rankings /". View online version, 2009. http://ecommons.txstate.edu/arp/291.
Testo completoAljaism, Wadah. "Control method for renewable energy generators /". View thesis, 2002. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20031223.093139/index.html.
Testo completoWang, Huizhi, e 王慧至. "Electrochemical conversion of aluminum energy: energy efficiency, co-production concept and systemcharacteristics". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B4697040X.
Testo completoChiarelli, Andrea. "Energy harvesting pavements using air convection". Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/37958/.
Testo completoFisher, Jeffrey Dean 1966. "The Icelandic Example: Planning for Hydrogen Fueled Transportation in Oregon". Thesis, University of Oregon, 2009. http://hdl.handle.net/1794/9899.
Testo completoThe ability to provide an adequate supply ofrenewable energy necessary to offset the emissions of"zero emission" vehicles is of importance for Oregon's planners and policy makers. An increase in electricity generation caused by the electricity required for zero-emissions hydrogen fuel cell vehicles will result in an increase in greenhouse gas emissions ifrenewable energy is not installed to meet hydrogen fuel cell needs. What are the renewable energy implications for Oregon planners to consider for meeting future fuel cell zero emission vehicle (ZEV) needs? Work done in Iceland can serve as an example for Oregon's need for renewable energy to meet ZEV needs. Icelandic data about hydrogen generation and the renewable energy requirements necessary for ZEVs at the Gtj6thaIs hydrogen fueling station set a benchmark for Oregon planners to consider when figuring the impact of ZEVs.
Committee in Charge: Dr. Robert F. Young, Chair; Dr. Greg Bothun; Mr. Roger Ebbage
Ramadan, Omar. "Compressed air energy storage for large-scale renewable energy systems for a case study of Egyptian grid". Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/33601/.
Testo completoSchmitz, Anthony. "Effect of oil prices on returns to alternative energy investments". Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31843.
Testo completoCommittee Chair: Vivek Ghosal; Committee Member: Byung-Cheol Kim; Committee Member: Chun-Yu Ho; Committee Member: Tibor Besedes. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Murray, Angus. "Modelling and heuristic optimization of a hydrogen producing renewable energy system". Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=202138.
Testo completoAkoush, Sherif. "Exploiting surplus renewable energy in datacentre computing". Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610058.
Testo completoRobbins, Curt. "Small scale renewable energy storage system using hydrogen combustion". abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1456487.
Testo completoMacbeth, John Noel. "A thermal charge system for variable electrical supplies from renewable sources". Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=202380.
Testo completoAu, P. N., e 區沛能. "Pearl River Delta and the development of renewable energy in HongKong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31255723.
Testo completoYee, Victoria E. "Predicting the renewable energy portfolio for the southern half of the United States through 2050 by matching energy sources to regional needs". Scholarly Commons, 2012. https://scholarlycommons.pacific.edu/uop_etds/808.
Testo completoOcampo-Corrales, Diego B. "On Renewable Energy Innovation and its Knowledge Flows’ Sources and Nature". Doctoral thesis, Universitat de Barcelona, 2020. http://hdl.handle.net/10803/670011.
Testo completoTuresson, Jonas. "Potential for Renewable Energy Sources (RES) in Grenoble, Delft & Växjö". Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34442.
Testo completoLi, Yunbo. "Resource allocation in a Cloud partially powered by renewable energy sources". Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0019/document.
Testo completoMost of the energy-efficient Cloud frameworks proposed in literature do not consider electricity availability and renewable energy in their models. Integrating renewable energy into data centers significantly reduces the traditional energy consumption and carbon footprint of these energy-hungry infrastructures. As renewable energy is intermittent and fluctuates with time-varying, it is usually under-utilized. We address the problem of improving the utilization of renewable energy for a single data center and investigate two approaches: opportunistic scheduling and energy storage. Our results demonstrate that both approaches are able to reduce the brown energy consumption under different configurations. We extend this work to the context of Edge Clouds and Internet of Things on the use case of data stream analysis. We show how to make Edge Clouds greener with on-site renewable energy production combined with energy storage and performance degradation of the users’ applications