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Tesis sobre el tema "Wind energy"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Ndzukuma, Sibusiso. "Statistical tools for wind energy generation." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1020627.

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In this study we conduct wind resource assessment to evaluate the annual energy production of a wind turbine. To estimate energy production of a wind turbine over a period of time, the power characteristics of the wind turbine are integrated with the probabilities of the wind speed expected at a chosen site. The first data set was obtained from a wind farm in Denmark. We propose several probability density functions to model the distribution of the wind speed. We use techniques from nonlinear regression analysis to model the power curve of a wind turbine. The best fit distribution model is ass

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2

Золотова, Світлана Григорівна, Светлана Григорьевна Золотова, Svitlana Hryhorivna Zolotova, and O. V. Leunova. "Wind Energy Sources." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13443.

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3

Goff, Charles. "Wind energy cost reductions." CONNECT TO ELECTRONIC THESIS, 2006. http://hdl.handle.net/1961/3598.

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4

Sankaranarayanan, Vairamayil. "Maintenance – Wind Energy Production." Thesis, Mälardalens högskola, Innovation och produktrealisering, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-27620.

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This thesis investigates issues like maintenance problems, key factors, maintenance challenges, maintenance solutions and practical difficulties in wind energy. In this case, surveys and interviews have been taken from several companies and maintenance experts, to find most prevailing problems and problem-solving methods since last few years. It helps to show, how the energy maintenance has been developed in past few years. Also it analyses the impact of fourth generation maintenance in wind energy production. From research questions, key factors involved in wind energy maintenance provides us

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5

Sun, Huihui. "Miniature wind energy harvesters." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/416874/.

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Energy harvesting is a very attractive technique for a wide variety of self-powered microsystems such as wireless sensors. Airflow induced oscillations have been used as an attractive technique for energy harvesting because of its potential capacity for generating electrical power. The aero-elastic instability phenomenon such as flutter has been suggested especially for small scale energy harvesters. This paper describes the design, simulation, fabrication, measurement and performance of a miniature wind energy harvester based on a flapping cantilevered beam. The wind generator is based on osc

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6

Wang, Jialin. "Building integrated wind energy." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/building-integrated-wind-energy(81978798-e68a-4189-87b0-4159b280b6e9).html.

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In considering methods of reducing the emission of carbon dioxide; there is a growing interest for use of wind power at domestic building in U.K. But the technology of wind turbines development in building environment is more complicated than in open areas. Small wind turbines in suburban areas have been reported as having unsatisfactory energy output, but it is not clear whether this is due to insufficient wind resource or low turbine efficiency. The aim of this research is to discover whether the wind resource in suburban areas is large enough for small wind turbines to produce a useful ener

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7

Shelley, Dena L. "A wind energy landscape : the Searsburg Wind Park." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1390311.

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Wind Energy facilities are becoming a more common occurrence among the U.S. landscape. The shift to renewable from non-renewable energy sources is an important agenda item for energy policy in the 21st century. Unlike other forms of energy, the unique visual aspects of wind energy provide opportunities to engage with and actually view the process of energy production. The sculptural element of turbines and their placement in highly visible areas, such as mountain ridges, provides opportunities of environmental interpretation and public interaction. Although existing security and safety precaut

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8

Moor, Gary Duncan. "Optimization of wind energy transfer using wind turbines." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53542.

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Thesis (MScIng)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: The effect of topography and terrain on wind is examined in order to ensure that the wind turbine positioning will encourage a greater availability of wind energy to it. Maximum power point tracking methods are presented whereby the loading on the wind turbine is controlled to ensure that the maximum available energy from the wind is captured. The wind turbine system is modelled and used in simulations to evaluate the three proposed maximum power point trackers, named anemometer control, calculation control and constant

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9

Weekes, Shemaiah Matthias. "Small-scale wind energy : methods for wind resource assessment." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/6413/.

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Small-scale wind energy is a renewable energy technology with exciting prospects in a low carbon energy future. However, in order for the technology to be fully utilized, techniques capable of predicting the wind energy resource quickly, cheaply and accurately are urgently required. Specifically, the direct measurement approaches used in the large-scale wind industry are often not financially or practically viable in the case of small-scale installations. The subject of this thesis is the development of low-cost, indirect methods for predicting the wind resource using, (i) analytical models ba

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10

Gnauck, Robert. "Innovation System Wind Energy Industry." Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-149822.

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The wind industry has arrived at a state of technological maturity and is occasionally already today cost-competitive to conventional sources of energy. This thesis investigates the process of innovation that took place within the industry. A theoretical background into economical theory of innovation together with a status quo assessment of today's wind industry serves as introduction to the topic. In the analytical part, inducement mechanisms and functions of technological development will be identified as crucial drivers for innovation within the sector. The key findings of this thesis lead

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11

Camp, Elizabeth H. "Wind Energy and Wind-Energy-Inspired Turbulent Wakes: Modulation of Structures, Mechanisms and Flow Regimes." PDXScholar, 2018. https://pdxscholar.library.pdx.edu/open_access_etds/4391.

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The interaction of turbulent wakes with one another and with the adjacent fluid directly impacts the generation of electricity in wind turbine arrays. Computational modeling is well suited to the repeated iterations of data generation that may be required to inform understanding of the function of wind farms as well as to develop control schemes for plant function. In order to perform such computational studies, a simplified model of the turbine must be implemented. One of the most computationally efficient parametrizations of the blade utilizes a stationary disk which has a prescribed drag an

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12

Simley, Eric J. "Wind Speed Preview Measurement and Estimation for Feedforward Control of Wind Turbines." Thesis, University of Colorado at Boulder, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3721887.

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<p> Wind turbines typically rely on feedback controllers to maximize power capture in below-rated conditions and regulate rotor speed during above-rated operation. However, measurements of the approaching wind provided by Light Detection and Ranging (lidar) can be used as part of a preview-based, or feedforward, control system in order to improve rotor speed regulation and reduce structural loads. But the effectiveness of preview-based control depends on how accurately lidar can measure the wind that will interact with the turbine. </p><p> In this thesis, lidar measurement error is determine

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13

Lubitz, William David. "Near real time wind energy forecasting incorporating wind tunnel modeling /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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14

Korpås, Magnus. "Distributed Energy Systems with Wind Power and Energy Storage." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-132.

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<p>The topic of this thesis is the study of energy storage systems operating with wind power plants. The motivation for applying energy storage in this context is that wind power generation is intermittent and generally difficult to predict, and that good wind energy resources are often found in areas with limited grid capacity. Moreover, energy storage in the form of hydrogen makes it possible to provide clean fuel for transportation. The aim of this work has been to evaluate how local energy storage systems should be designed and operated in order to increase the penetration and value of win

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15

Abbey, Chad Michel. "Energy storage system optimization and control with wind energy." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66694.

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This thesis proposes a methodology for planning, scheduling and on-line control of an energy storage system for the integration of wind energy. Using the case study of a remote wind-diesel system, the different time frames of the design and implementation process are detailed. First, a long-term planning approach for rating of the power and energy capacities of the ESS is presented, based on stochastic optimization. The formulation is then adapted into a hourly scheduling approach and results are compared with the expected cost of energy and energy requirements resulting from

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16

Wallin, Micah R. "China’s Wind Energy Development and Prediction." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275450139.

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17

Alisar, Ibrahim. "Stochastic Modelling Of Wind Energy Generation." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614930/index.pdf.

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In this thesis work, electricty generation modeling of the wind energy -one type of the renewable energy sources- is studied. The wind energy characteristics and the distribution of wind speed in a specific region is also examined. In addition, the power curves of the wind turbines are introduced and the relationship between the wind speed and wind power is explained. The generation characteristics of the wind turbines from various types of producers are also investigated. In this study, the main wind power forecasting methods are presented and the advantages and disadvantages of the methods a

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18

McIntosh, Simon Charles. "Wind energy for the built environment." Thesis, University of Cambridge, 2009. https://www.repository.cam.ac.uk/handle/1810/252153.

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19

Oliveira, Marcelo De Lellis Costa de. "Airborne wind energy with tethered wings." reponame:Repositório Institucional da UFSC, 2016. https://repositorio.ufsc.br/xmlui/handle/123456789/173661.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Automação e Sistemas, Florianópolis, 2016.<br>Made available in DSpace on 2017-02-21T04:37:26Z (GMT). No. of bitstreams: 1 344130.pdf: 4016793 bytes, checksum: cf47b999d21f2e9b5ccc1999f40c9231 (MD5) Previous issue date: 2016<br>Abstract : Airborne Wind Energy (AWE) is an emerging field of technology that investigates wind power devices capable of remaining airborne either through aerostatic or aerodynamic forces. Consequently, the heavy and expensive tower of conventional

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20

Gupta, Yashank. "Magnus Based Airborne Wind Energy Systems." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT094/document.

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Le siècle dernier a été le siècle de la révolution technologique. Les combustibles fossiles ont alimenté cette révolution technologique. Les défis auxquels notre société est confrontée, que ce soit le changement climatique ou la situation énergétique mondiale ou l’épuisement des réserves de combustibles fossiles, sont les défis les plus graves auxquels sont confrontés toutes les générations. L'énergie renouvelable est considérée comme la clé des problèmes énergétiques de notre société. De nombreuses technologies innovantes se font concurrence pour alimenter la prochaine révolution énergétique.

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21

Barthelmie, Rebecca. "Predicting on- and off-shore wind speeds for wind energy applications." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364335.

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22

Nanopoulos, Andrew. "Valuation of wind energy projects and statistical analysis of wind power." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74932.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 221-225).<br>As energy becomes an increasingly important issue for generations to come, it is crucial to develop tools for valuing and understanding energy projects from an economic perspective since ultimately only economically viable solutions will be pushed forward. A model is developed for valuing a generic offshore floating wind farm from a corporate finance perspective. The model is used to value the project based

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23

Finlay-Jones, Richard. "Putting the spin on wind energy risk management issues associated with wind energy project development in Australia /." Connect to this title online, 2006. http://epubs.scu.edu.au/theses/23/.

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24

Rojas, Tito Damire Ariel Haydee. "Collision Risk for Migratory Birds Facing Wind Energy Installations in Europe in Relation to Wind Energy Production." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-449488.

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The increasing presence of wind energy installations is faced with citizen and political resistance often founded on the potential damage these can impose on fauna such as birds. This resistance is an obstacle to the necessary introduction of more weather-based renewable electricity sources due to the consequences of fossil-fuel electricity generation. However, if the introduction of more wind energy installations is to continue, this must also not be at the expense of wildlife. This project seeked to verify the existence of bird-turbine collision risk and to identify high collision risk zones

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25

Khastieva, Dina. "Energy Storage Impact On Systems With High Wind Energy Penetration." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1402063032.

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26

Pekkala, Ossian. "WIND POWER USED IN ENERGY CERTIFICATES AND DISTRIBUTED ENERGY SYSTEMS." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-219443.

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The possibility to use wind power directly in a house to replace part of the used electricity is examined here theoretically. Measured climate data from Finland, Vanda airport at 10 meters height, are used for outdoor temperature and wind data. This data is simulated for 8 different wind turbine power output and a case study residence building is used for the energy demand. The energy demand consists of heating, hot water and electrical equipment. If wind production is higher than energy demand then the remaining energy is stored in one electrical battery or the buildings hot water boiler. Add

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27

Phillips, Russell Leslie. "Development of a reciprocating aerofoil wind energy harvester." Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/899.

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Cross flow wind turbines are not unique. The performance of Savonius and Darrieus turbines is well documented. Both share the advantage of being able to accept fluid flow from any direction. The Savonius is drag based and hence has poor power output while the Darrieus is lift based. Due to the fact that the Darrieus has fixed blades the fluid flow through the rotor does not result in optimal lift being generated at all points in the rotation circle. A drawback of the Darrieus system is that it has to operate at a high tip-to wind-speed ratio to obtain reasonable performance with the fixed blad

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28

Longston, Kristopher J. "Planning For Wind Energy: Evaluating Municipal Wind Energy Land Use Planning Frameworks in Southwestern Ontario with a Focus on Developing Wind Energy Planning Policies for the City of Stratford." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2905.

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Wind energy provides an environmentally friendly and renewable source of electricity, that can help meet Canada's Kyoto commitments, help safeguard against future blackouts, reduce air pollution and create economic opportunities in the form of manufacturing jobs and land leases for farmers. From a land use planning perspective, however, wind turbines create challenges that municipalities and planners have to deal with more frequently. Ontario in particular lags behind countries such as Ireland and Australia in terms of providing a clear, equitable and comprehensive land use planning fram

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29

Waller, Mary Kate, and University of Cape Town Dept of Energy and Development Studies. "Challenges facing the wind energy industry in South Africa : lessons learned from international experience in promoting wind energy." Thesis, University of Cape Town, 2010. http://hdl.handle.net/10019.1/18207.

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Thesis (MScEng (Energy and Development Studies)) -- University of Cape Town, 2010.<br>ENGLISH ABSTRACT: Growing concerns regarding climate change, energy security, long-term carbon price exposure, fuel-price risk and fossil fuel depletion have continued to drive growth in wind energy globally over the past decade. In spite of South Africa’s renewable energy target and feed-in tariff for renewable energy, the current deployment of wind energy in South Africa is extremely low. Consequently, as the country embarks upon promoting the development of renewable energy, it is important to consider the

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30

Waller, Mary Kate. "Challenges facing the wind energy industry in South Africa : lessons learned from international experience in promoting wind energy." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/11147.

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Includes abstract.<br>Includes bibliographical references (leaves 87-94).<br>Growing concerns regarding climate change, energy security, long-term carbon price exposure, fuel price risk and fossil fuel depletion have continued to drive growth in wind energy globally over the past decade. In spite of South Africa’s renewable energy target and feed-in tariff for renewable energy, the current deployment of wind energy in South Africa is extremely low. Consequently, as the country embarks upon promoting the development of renewable energy, it is important to consider the challenges facing the wind

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31

Arledge, Lauren Habenicht. "Wind-Abilities: A Mixed-Use Model for Thoughtful Wind Farm Design." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78246.

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Globally, wind power is leading the renewable energy revolution. While carbon neutral and cost-effective, wind energy infrastructure is immobile and has the potential to profoundly change land use and the visible landscape. As wind technology takes its place as a key contributor to the US energy grid, it becomes clear that these types of projects will come into greater contact with areas occupied by humans, and eventually with wilderness and other more natural areas. This increased visibility and close proximity necessitates the development of future wind farm sites that afford opportunities f

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32

Gustafsson, Eric, and Kalle Svensson. "Wind Energy Analyzing System : An audio doppler interferometer for wind speed determination." Thesis, Halmstad University, School of Business and Engineering (SET), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-4692.

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<p>I dagens samhälle diskuteras miljö- och energifrågorna i allt större utsträckning. Projektgruppen valde att bidra till utvecklingen genom att underlätta för vindkraftbolagen att nå ut med grön energi på marknaden.</p><p>Projektgruppen har tillsammans med samarbetspartnern Lars Bååth professor i fotonik på Högskolan i Halmstad tagit fram en produkt som mäter vind inför byggandet av vindkraftverk. Wind Energy Analyzing System mäter vindförhållandena kontinuerligt från marknivå med hjälp av ljud och förvandlar informationen till vindriktning och vindhastighet på specifika höjder. Wind Energy A

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33

Veldkamp, Herman Frederik. "Chances in wind energy : a probabilistic approach to wind turbine fatigue design /." [Delft] : DUWIND Delft Univ. Wind Energy Research Inst, 2006. http://www.gbv.de/dms/bs/toc/520167805.pdf.

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34

Green, Michael Paul. "Using Mesoscale Meteorological Models to Assess Wind Energy Potential." Thesis, University of Canterbury. Environmental Science, 2005. http://hdl.handle.net/10092/1275.

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As the demand for safe and clean electricity increases, the New Zealand wind energy industry seems poised to expand. Many generating companies have projects in the planning stage and there are likely to be many more potential sites yet to be identified. Reliable wind climate predictions over a wide area and for different heights above grounds are often vital to determine the viability of wind farm projects. This study investigates the use of meteorological mesoscale models to determine the wind and energy resource, particularly in areas of complex terrain. Complex terrain environments are like

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35

Kishore, Ravi Anant. "Small-scale Wind Energy Portable Turbine (SWEPT)." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23099.

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Large Scale Wind Turbines (LSWTs) have been extensively examined for decades but very few studies have been conducted on the small scale wind turbines (SSWTs) especially for the applications near ground level where wind speed is of order of few meters per second. This study provides the first systematic effort towards design and development of SSWTs (rotor diameter<50 cm) targeted to operate at low wind speeds (<5 m/s). An inverse design and optimization tool based on Blade Element Momentum theory is proposed. The utility and efficacy of the tool was validated by demonstrating a 40 cm diameter

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36

Van, Lian Uk. "Risk analysis methods within offshore wind energy." Thesis, Norges Teknisk-Naturvitenskaplige Universitet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21113.

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This report starts discussing a number of possible risk analysis methods related to five challenges identified by SINTEF within offshore renewable wind energy industry, and it ends up with case studies on two challenges by testing SPAR-H method and proposing risk reducing measures. I answer to all the questions, which are defined in the thesis assignment, by first selecting all the five safety challenges. I consider different risk analysis techniques and suggest a few of them for each individual challenges in a tabular fashion. I describe the proposed risk analysis techniques with their stren

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37

Kuang, Chen, Jin Ying, and Li Yumin. "Energy Crisis : wind Power Market in China." Thesis, Högskolan Kristianstad, Sektionen för hälsa och samhälle, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-10865.

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Purpose/aim The aim is to explore which price policy of the Chinese wind power is the most suitable for the market. Design/methodology/approach Data has been collected through questionnaires. The analysis includes the statistical test in form of chi-square. Additionally the whole thesis followed the onion process put forward by Saunders. Findings The analysis showed that the price policy which is based on the local price of coal is more suitable for the market than the price policy decided by concession projects. Originality/value An original idea is given the relationship between ages, educa

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38

Noori, Mehdi. "Sustainability Assessment of Wind Energy for Buildings." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5995.

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Due to increasing concerns for global climate change, onshore and offshore wind energy technologies have stimulated a tremendous interest worldwide, and are considered as a viable solution to mitigate the environmental impacts related to electricity generation. Although wind energy technologies have been considered as one of the cleanest energy sources, they have a wide range of direct and indirect environmental impacts when the whole supply chain is considered. This study aims to quantify the direct and indirect environmental impacts of onshore and offshore wind power technologies by tracing

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39

Roberts, E. C. "Energy simulation of climatic wind tunnel plant." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/7250.

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The Climatic Wind Tunnel (CWT) is a facility used by the motor industry to test vehicles under climatic extremes without the need for expensive overseas test programs. This work focuses on the application of computer simulation to the Heating Ventilation and Air Conditioning (HVAC) plant that makes up a CWT facility. The objective being to reduce its operational costs through the identification of energy saving operational strategies. When in operation the CWT has a peak power consumption of 3MW. The implementation of any measures that would reduce this peak load would give rise to considerabl

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40

Mota, Ricardo Jorge Monteiro. "Acquisition of horizon wind energy by EdP." Master's thesis, NSBE - UNL, 2009. http://hdl.handle.net/10362/9642.

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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Finance from the NOVA – School of Business and Economics<br>At the beginning of 2007, EdP, a Portuguese electricity utility was studying the potential acquisition of Horizon Wind Energy. Owned by Goldman Sachs, Horizon was a relevant player in the wind energy industry with capacity installed in USA. Requiring that EdP more than doubles its investments in renewables until 2010, this consolidation move would place the company as the 4th largest operator in the world.. Governmental support is just one

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41

Шевцов, Сергій Валерійович, Сергей Валерьевич Шевцов, Serhii Valeriiovych Shevtsov, and A. Shavanov. "System of Ukraine wind energy potential management." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/26730.

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42

Ishchenko, N. "Progress trends of wind energy in Ukraine." Thesis, Вид-во СумДУ, 2005. http://essuir.sumdu.edu.ua/handle/123456789/19882.

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43

Tamang, A. "Progress trends of wind energy in Nepal." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/26796.

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44

Іщенко, Наталія Володимирівна, Наталия Владимировна Ищенко, Nataliia Volodymyrivna Ishchenko, and O. Kosarev. "Progress trends of wind energy in Ukraine." Thesis, Видавництво СумДУ, 2004. http://essuir.sumdu.edu.ua/handle/123456789/22796.

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45

Іщенко, Наталія Володимирівна, Наталия Владимировна Ищенко, Nataliia Volodymyrivna Ishchenko, and A. Kosarev. "Progress trends of wind energy in Ukraine." Thesis, Видавництво СумДУ, 2005. http://essuir.sumdu.edu.ua/handle/123456789/8417.

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46

Volkov, A. N., and E. U. Sayenko. "Alternative sources of energy. Wind-power engineering." Thesis, Видавництво СумДУ, 2006. http://essuir.sumdu.edu.ua/handle/123456789/8554.

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Jiang, Xin. "Risk Analysis of Wind Energy Company Stocks." Thesis, Linnéuniversitetet, Institutionen för matematik (MA), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-98039.

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In this thesis, probability theory and risk analysis are used to determine the riskof wind energy stocks. Three stocks of wind energy companies and three stocksof technology companies are gathered and risks are compared. Three difffferent riskmeasures: variance, value at risk, and conditional value at risk are used in this thesis.Conclusions which has been drawn, are that wind energy company stock risks arenot signifificantly lower than the stocks of other companies. Furthermore, optimalportfolios should include short positions of one or two of the energy companies forthe studied time period a

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Walker, Joshua. "Regional renewable assessment wind versus solar energy /." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024933.

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Haouas, Nabiha. "Wind energy analysis and change point analysis." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22554.

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L’énergie éolienne, l’une des énergies renouvelables les plus compétitives, est considérée comme une solution qui remédie aux inconvénients de l’énergie fossile. Pour une meilleure gestion et exploitation de cette énergie, des prévisions de sa production s’avèrent nécessaires. Les méthodes de prévisions utilisées dans la littérature permettent uniquement une prévision de la moyenne annuelle de cette production. Certains travaux récents proposent l’utilisation du Théorème Central Limite (TCL), sous des hypothèses non classiques, pour l’estimation de la production annuelle moyenne de l’énergie é

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HAIDAR, MOHAMMAD. "Wind energy harvester interface for sensor nodes." Doctoral thesis, Università degli studi di Genova, 2021. http://hdl.handle.net/11567/1040050.

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The research topic is developping a power converting interface for the novel FLEHAP wind energy harvester allowing the produced energy to be used for powering small wireless nodes. The harvester’s electrical characteristics were studied and a strategy was developped to control and mainting a maximum power transfer. The electronic power converter interface was designed, containing an AC/DC Buck-Boost converter and controlled with a low power microcontroller. Different prototypes were developped that evolved by reducing the sources of power loss and rendering the system more efficient. The valid

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