Rozprawy doktorskie na temat „Wave energy”
Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych
Sprawdź 50 najlepszych rozpraw doktorskich naukowych na temat „Wave energy”.
Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.
Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.
Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.
Rahm, Magnus. "Ocean Wave Energy : Underwater Substation System for Wave Energy Converters". Doctoral thesis, Uppsala universitet, Elektricitetslära, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-112915.
Pełny tekst źródłaGuerrero, Felipe Martinez. "Development of a wave energy basin to maximize wave energy conversion". Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20241.
Pełny tekst źródłaO'Boyle, Louise. "Wave fields around wave energy converter arrays". Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602715.
Pełny tekst źródłaSun, Haili. "Ray-tracing internal wave/wave interactions and spectral energy transfer /". Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/10973.
Pełny tekst źródłaMackay, Edward B. L. "Wave energy resource assessment". Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/79448/.
Pełny tekst źródłaNikonov, M. "Energy resources: wave power". Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/62834.
Pełny tekst źródłaLarsson, Petter, i Gustaf Rudbeck. "Wave Energy Concept Benchmarking". Thesis, KTH, Maskinkonstruktion (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298841.
Pełny tekst źródłaThis report intends to examine the most common types of wave energy converter technologies to compare the different concepts' ability to absorb wave energy. Concepts being investigated are point absorbers and oscillating water columns (OWC). Calculations are made for the different concepts in the same wave conditions to be able to compare the energy that can be extracted. In the report, calculations are made under optimal wave conditions. The waves are assumed to be linear and the wave energy converter is assumed to be in phase with the oscillating motion of the wave. The wave data used is measured outside Belmullet in Ireland. Calculations are made on waves with a significant wave height of 1.25 m and a period time of 7.5 s. Calculations are also made on the largest measured wave present. In essence, power calculations are used according to a model developed by Kjell Budal and with the help of this be able to graphically and numerically compare the theoretical and actual maximum power that can be extracted from each scale. The results from the survey show that the largest contributing factor to high energy recovery is due to the volume of the buoy. The volume must be adapted to the wave conditions that exist where the buoy is to be placed.When calculating an OWC with a cross sectional area of 19 m2, it turns out that the power that can be extracted from an air chamber with an associated turbine is approximately 10 kW, 1/30 of the 300 kW that can be extracted by one point absorber. However, an OWC rarely consists of a single air chamber but often in a construction with several air chambers with separate turbines to increase the power.
Waters, Rafael. "Energy from Ocean Waves : Full Scale Experimental Verification of a Wave Energy Converter". Doctoral thesis, Uppsala universitet, Elektricitetslära, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9404.
Pełny tekst źródłaLavidas, George. "Wave energy resource modelling and energy pattern identification using a spectral wave model". Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25506.
Pełny tekst źródłaGotthardsson, Björn. "Analysis and Evaluation of the Wavebox Wave Energy Converter". Thesis, Uppsala universitet, Elektricitetslära, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-149364.
Pełny tekst źródłaThorburn, Karin. "Electric Energy Conversion Systems : Wave Energy and Hydropower". Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7081.
Pełny tekst źródłaSjökvist, Linnea. "Wave Loads and Peak Forces on Moored Wave Energy Devices in Tsunamis and Extreme Waves". Doctoral thesis, Uppsala universitet, Elektricitetslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-328499.
Pełny tekst źródłaFeng, Zhe. "Control of wave energy converters". Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/27048.
Pełny tekst źródłaGarnaud, Xavier. "Wave Energy Extraction from buoys". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50603.
Pełny tekst źródłaIncludes bibliographical references (p. 187-190).
Different types of Wave Energy Converters currently tested or under development are using the vertical movement of floating bodies to generate electricity. For commercial applications, arrays have to be considered in order to produce a significant power. In this thesis, we investigate the interaction between floating buoys from an hydrodynamic point of view. The objective is to derive general features of energy extraction without resorting to direct numerical simulation by applying the method of homogenization. After reviewing characteristic aspects of power extraction from a single oscillating body, we study a first configuration where many small buoys are placed close to each other. We show that a collection of point absorbers extract more energy than a single big buoy and that the bandwidth is wider. We also show that multiple scales analysis allows to treat radiation problems, and that if the incoming wave length is a multiple of the spacing between buoys, energy extraction can be reduced in a very significant way due to a very strong reflection, which prevents the wave from traveling inside the array.
by Xavier Garnaud.
S.M.
Du, Plessis Jacques. "A hydraulic wave energy converter". Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/19950.
Pełny tekst źródłaENGLISH ABSTRACT: As a renewable energy source, wave energy has the potential to contribute to the increasing global demand for power. In South Africa specifically, the country’s energy needs may easily be satisfied by the abundance of wave energy at the South-West coast of the country. Commercially developing and utilizing wave energy devices is not without its challenges, however. The ability of these devices to survive extreme weather conditions and the need to achieve cost-efficacy while achieving high capacity factors are but some of the concerns. Constant changes in wave heights, lengths and directions as well as high energy levels and large forces during storm conditions often lead to difficulties in keeping the complexity of the device down, avoiding over-dimensioning and reaching high capacity factors. The point absorber device developed as part of this research is based on an innovation addressing the abovementioned issues. An approach is followed whereby standard "offthe- shelf" components of a proven hydraulics technology are used. The size of the device is furthermore adaptable to different wave climates, and the need for a control system is not necessary if the design parameters are chosen correctly. These characteristics enable low complexity of the device, excellent survivability and an exceptionally high capacity factor. This may lead to low capital as well as low operationand maintenance costs. In this paper the working principle of this concept is presented to illustrate how it utilises the available wave energy in oceans. The results obtained from theoretical tests correlate well with the experimental results, and it is proven that the device has the ability to achieve high capacity factors. As the device makes use of existing, "off-the-shelf" components, cost-efficient energy conversion is therefore made feasible through this research.
AFRIKAANSE OPSOMMING: As ’n hernubare/ herwinbare energiebron bied golfenergie die potensiaal om by te dra tot die bevrediging van die stygende globale energie-navraag. In spesifiek Suid-Afrika kan die oorvloed van beskikbare golfenergie aan die Suid-Weskus van die land gebruik word om aan die land se energiebehoeftes te voldoen. Betroubaarheid en oorlewing in erge weerstoestande, koste-effektiwiteit en die behaal van hoë kapasiteitsfaktore is beduidende struikelblokke wat oorkom moet word in die poging om ’n golfenergie-omsetter wat kommersieël vervaardig kan word, te ontwikkel. Daarby dra voortdurende veranderings in golfhoogtes, -lengtes en -rigtings sowel as hoë energievlakke en groot kragte tydens storms by to die feit dat dit moeilik is om die kompleksiteit van die stelsel laag te hou. Dit terwyl daar voorkom moet word dat die toestel oorontwerp en verhoed word dat hoë kapsiteitsfaktore bereik word. Die puntabsorbeerder-toestel wat in hierdie navorsing ontwikkel is, bestaan uit ’n ontwerp wat spesifiek ontwikkel is om die bogenoemde probleme aanspreek. ’n Unieke benadering is gevolg waardeur standaard, maklik-bekombare komponente gebruik is en die komponent-groottes ook aangepas kan word volgens golfgroottes. Indien die ontwerpsdimensies akkuraat gekies word, is die moontlikheid verder goed dat ’n beheerstelsel nie geïmplementeer hoef te word nie. Hierdie eienskappe verseker lae stelselkompleksiteit, uitstekende oorlewingsvermoë en ’n uitstaande kapasiteitsfaktor. Lae kapitaal- sowel as onderhoudskostes is dus moontlik. Die doel van hierdie dokument is om die werking van die konsep voor te stel en teoreties sowel as prakties te evalueer. Die resultate van teoretiese toetse stem goed ooreen met eksperimentele resultate, en dit is duidelik dat die toestel hoë kapasiteitsfaktore kan behaal. Aangesien die toestel verder gebruik maak van bestaande komponente wat alledaags beskikbaar is, word die koste-effektiewe omsetting van golfenergie dus moontlik gemaak deur hierdie navorsing.
ESPING, JONATAN. "Bearings in Wave Energy Converters". Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299281.
Pełny tekst źródłaVågkraft och vågkraftsgeneratorer är ett område som växer snabbt i intresse för både forskning och produktutveckling. På senare år har fler och fler vågkraftsgeneratorer och designer för dessa sett framgång i prototyptester och flera är på fortsatt utveckling. Vågkraftsgeneratorer står inför flera utmaningar, med de sammansatta faktorerna av en väldigt korrosiv miljö, höga krafter och oscillerande rörelse. Vilket stället flera krav på designers på allt ifrån korrosionsskydd till materialkunskap krig utmattning av maskinkomponenter. Dessvärre finns ytterst lite noga dokumenterad forskning kring området då det är en väldigt ung bransch. Denna rapport söker att utforska och informera kring de utmaningar som kan ställas på vågkraftsgeneratorer inom specifikt tribologi och specifikt för lager och lagerval. Arbetet fokuserar på en litteraturstudie över de möjliga utmaningarna området skapar. Grundat på relevant forskning inom liknande områden betygsattes ett urval av lagerval för vågkraftsgeneratorer. Där slutsatserna pekar på att då det möjligtvis är olämpligt i nuvarande läge att nytta saltvatten som smörjningsmedel, i framtiden kan detta bli en kommersiell verklighet. Där både glidlager och rullningslager har sina fördelar och nackdelar inom applikationen, med noga valda materialkombinationer, smörjningsmedel och tätningar.
Salar, Dana. "Miniature Wave Energy Converter (WEC)". Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-366760.
Pełny tekst źródłaKatsidoniotaki, Eirini. "Extreme wave conditions and the impact on wave energy converters". Licentiate thesis, Uppsala universitet, Elektricitetslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-441043.
Pełny tekst źródłaAshton, Ian Gerard. "Spatial variability of wave fields over the scale of a wave energy test site". Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3471.
Pełny tekst źródłaWestphalen, Jan. "Extreme wave loading on offshore wave energy devices using CFD". Thesis, University of Plymouth, 2011. http://hdl.handle.net/10026.1/2878.
Pełny tekst źródłaStokes, Christopher Hugo. "Coastal impacts in the lee of a wave energy site : waves, beach morphology and water-users (Wave Hub, Cornwall, UK)". Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/4303.
Pełny tekst źródłaBoström, Cecilia. "Electrical Systems for Wave Energy Conversion". Doctoral thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-140116.
Pełny tekst źródłaFelaktigt tryckt som Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 727
BRACCO, GIOVANNI. "ISWEC: a Gyroscopic Wave Energy Converter". Doctoral thesis, Politecnico di Torino, 2010. http://hdl.handle.net/11583/2562362.
Pełny tekst źródłaGustafsson, Egil. "Extreme loading and fatigue analysis of a wave energy device". Thesis, KTH, Marina system, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-198506.
Pełny tekst źródłaLeijon, Jennifer. "Simulation of a linear wave energy converter with different damping control strategies for improved wave energy extraction". Thesis, Uppsala universitet, Elektricitetslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-287369.
Pełny tekst źródłaXu, Xu. "Nonlinear dynamics of parametric pendulum for wave energy extraction". Thesis, University of Aberdeen, 2005. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=189414.
Pełny tekst źródłaNascimento, Joao Manuel Morim do. "Wave Energy Resource along the Southeast Coast of Australia". Thesis, Griffith University, 2016. http://hdl.handle.net/10072/365734.
Pełny tekst źródłaThesis (Masters)
Master of Philosophy (MPhil)
Griffith School of Engineering
Science, Environment, Engineering and Technology
Full Text
Helfrich, L. Cody. "Estimating oceanic internal wave energy from seismic reflector slope spectra". Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594476671&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Pełny tekst źródłaLi, Linghan. "Numerical investigation of wave structure interaction with application to wave energy devices". Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/413590/.
Pełny tekst źródłaMagagna, Davide. "Oscillating water column wave pump : a wave energy converter for water delivery". Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/349009/.
Pełny tekst źródłaDe, Marichalar Alegre Alexandra. "Overtopping Converter Prototype for Electrical Generation from Wave Energy : Laboratory Test". Thesis, KTH, Energiteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-38883.
Pełny tekst źródłaHoen, Marthe Kristine Tautra. "Modeling and Control of Wave Energy Converters". Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8960.
Pełny tekst źródłaWave Power is a technology that was founded in the 70's, but which still not has reached full industrial recognition as a energy source. In this thesis there is a literature study on different concepts of Wave Energy Converters(WEC) which has been build in full scale, and there is a great variety in the concepts. There is a theory chapter where ocean waves theory, mass-spring-damper dynamics, hydrodynamics and maximum power capture are presented. The modeling work was done on a axisymmetric point absorber WEC, which can be said to have the greatest potential for energy absorption because it is small relative to the wavelength of the incident waves. To be able to simulate on the model, a control strategy must be included, and I have included PID control and Model Predictive Control as strategies to be able to capture maximum power with Phase Latching. I believe that Model Predictive Control will be the best choice for control system, although it is not as robust as PID control, but because of its predictive behavior. At last there is a chapter where further work and some concluding remarks are given.
Hals, Jørgen. "Modelling and phase controlof wave-energy converters". Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11952.
Pełny tekst źródłaFang, Fang, i Dinkoo Mehrdad. "Wave Energy of an Antenna in Matlab". Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16587.
Pełny tekst źródłaEricsson, Emil, i Eric Gregorson. "Quantitative Risk Assessment of Wave Energy Technology". Thesis, Uppsala universitet, Elektricitetslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-342033.
Pełny tekst źródłaGiassi, Marianna. "Optimization of Point Absorber Wave Energy Parks". Licentiate thesis, Uppsala universitet, Elektricitetslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-337772.
Pełny tekst źródłaWarner, John M. "Wave energy conversion in a random sea". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ31537.pdf.
Pełny tekst źródłaThies, Philipp Rudolf. "Advancing reliability information for Wave Energy Converters". Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/4053.
Pełny tekst źródłaPrice, Alexandra A. E. "New perspectives on wave energy converter control". Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3109.
Pełny tekst źródłaTurner, Rosalind Hilary Clare. "Wave energy dissipation at cliffed saltmarsh margins". Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612840.
Pełny tekst źródłaMedina-López, Encarnación. "Thermodynamic processes involved in wave energy extraction". Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31422.
Pełny tekst źródłaBliss, Nice Sam. "Qualitative risk analysis on wave energy technologies". Thesis, Uppsala universitet, Institutionen för elektroteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-423092.
Pełny tekst źródłaNarra, Pedro Miguel Fragoso. "Attenuation of wave energy in mangrove forests". Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/10522.
Pełny tekst źródłaMangrove forests are a very important ecosystem in protected coastal zones. These forests provide food and habitat for numerous species and have an important role in the coastal stabilization, trapping sediments and reducing erosion. They also contribute to wave attenuation, which might add to the safety of a coastal environment. Although the importance of mangrove forests in wave attenuation is widely recognized, the amount of comprehensive studies to understand the quantitative effect of the mangroves in the attenuation of wave energy is still insufficient. This thesis aims to increase knowledge on wave attenuation in mangroves by studying this process in the field. Results are presented of a fieldwork campaign executed in the Trang province, Thailand, between November 2010 and May 2011. It is the first known study that includes quantitative information on the vegetation in the field, presenting rates of vegetation density along the studied transects. Two different transects were chosen in Trang province – Kantang and Palian – showing differences in slopes and vegetation. Measurements included surface elevation, vegetation density and pressure fluctuations. After the measurements, the pressure data was carefully selected and analyzed using spectral analysis and wave linear theory concepts. The entire procedure is described in this thesis in order to provide a good basis for future studies in the field. The results show the presence of waves with periods mostly exceeding 5 seconds. At Kantang most of the waves have periods between 10 and 20 seconds. Wave attenuation is found to be about 2.5 J/m2 in 100 meters of mangrove forest at Palian and 0.8 J/m2 per 100 meters of mangroves at Kantang. This difference can be explained by a more accentuated slope, a denser forest and the presence of higher frequency waves that are easily attenuated at Palian. In general, the wave attenuation reaches values around 60% attenuation along the transects. Comparison with other studies shows that the results in this thesis resemble the findings of previous researches. The wave attenuation in mangroves was also compared to wave attenuation in salt marshes and it was concluded that the salt marshes have better wave attenuating capacity if the water depth is not too high, but with increasing water depths they rapidly loose this capacity, in contrary to mangroves.
As florestas de mangue são um ecossistema muito importante em zonas de costa protegida. Estas florestas fornecem alimento e habitat a inúmeras espécies e têm um papel importante na estabilização costeira, retendo sedimentos e reduzindo a erosão. Estas florestas também influenciam a atenuação das ondas, contribuindo para a segurança costeira. Embora seja amplamente reconhecida a importância das florestas de mangue na atenuação da energia das ondas, constata-se que a bibliografia sobre este tema é ainda insuficiente. Esta tese tem como objetivo aumentar o conhecimento sobre este fenómeno. Para tal, são analisados os dados relativos a um trabalho de campo executado na província de Trang, Tailândia, entre Novembro de 2010 e Maio de 2011. Este é o primeiro estudo a incluir informação quantitativa sobre a vegetação na zona em análise, apresentando valores para a densidade da vegetação ao longo dos trajetos estudados. Foram selecionados dois trajetos distintos na província de Trang – Kantang e Palian. Estes locais apresentam diferenças na inclinação do terreno e na densidade da vegetação. As medições realizadas incluem levantamento o topográfico do terreno, a densidade da vegetação e as variações de pressão ao longo do trajeto. Após as medições, os dados relativos à sobre a variação de pressão foram cuidadosamente selecionados e analisados usando análise espectral e conceitos da teoria de onda linear. Todo o procedimento é descrito nesta tese de modo a proporcionar uma boa base para futuros estudos na área. Os resultados mostram, na sua maioria, a presença de ondas com períodos superiores a 5 segundos. Em Kantang, a maior parte das ondas têm períodos entre os 10 e 20 segundos. A atenuação da energia hidrodinâmica num percurso de 100 metros de floresta é estimada em cerca de 2,5 J/m2 em Palian e 0,8 J/m2 em Kantang. Esta diferença pode ser explicada pela mais acentuada inclinação do terreno, uma maior densidade de vegetação e pela presença de ondas com períodos menores (que são mais facilmente atenuadas) em Palian. Em geral, a atenuação das ondas atinge valores de cerca de 60% ao longo dos trajetos. A comparação com outros estudos mostra que as conclusões retiradas nesta tese são semelhantes às conclusões de pesquisas anteriores. A atenuação da energia hidrodinâmica em florestas de mangue também foi comparada com a atenuação em pântanos salgados. Conclui-se que estes ecossistemas têm maior capacidade de atenuação se o nível do mar for baixo, mas que com maiores profundidades esta capacidade reduz-se rapidamente, ao contrário das florestas de mangue.
Thomas, Simon. "Control of Wave Energy Converters in arrays". Licentiate thesis, Uppsala universitet, Elektricitetslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-364096.
Pełny tekst źródłaVågkraft kan bli en viktig del från framtidens elektriska energikälla. Men därför kostnaden per producerat energienheten måste minskas. En väg att minska kostnaden är att förbättra effektiviteten med ett avancerat styrsystem. Den här avhandlingen tester olika kontrollstrategier för att hitta en bra strategi för vågkraftverk i parker. Alla strategier testas med an numerisk simulering och ett fysiskt test med en 1:10 skalad modell i en våg bassäng. Först är en elektrisk vågkraft konverter (WEC) med optimerad naturlig frekvens men utan styrsystem är testad. WECen absorberar hög effekt i ett litet område med de vanligaste vågklimatet. Storlek på området kan varieras med generatorns dämpning och bästa vågperiod kan ändras med WECens tröghet. En generator med optimal dämpningsfaktor testas, för att en justerbar generator dämpning är relativt lätt att implementerar. Numerisk simulering visade att optimal dämpningsfaktor beror på vågperiod och minskar när våghöjden ökar. Beroende av effekten från våghöjd kan ses i numerisk simulation och fysiksals test, men beroende av effekten från vågperiod kan ses bara i numerisk simulation. Därefter, en modell oberoende strategi (som kallas CL) för vågkraftkonverter i arrayer är presenterat och testad för att styra (1) generator dämpningsfaktor och (2) latching tid. Resultat är att den CL kontrollerade generatorn dämpning endast visar små fördelar med absorberat energi. Men med en CL optimerat latching tid, absorberat effekten ökas mer som 100\% i vissa vågklimat.
SUPERFARMS
Nové-Josserand, Clotilde. "Converting wave energy from fluid-elasticity interactions". Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC124/document.
Pełny tekst źródłaUnderstanding the mechanisms involved in wave-structure interactions is of high interest for the development of efficient wave energy harvesters as well as for coastal management. In this thesis, we study the interactions of surface waves with a model array of slender flexible structures, in view of developing an efficient system for both attenuating and harvesting wave energy. The presented results are based around experimental investigations, by means of small scale facilities, in which the spatial arrangement of the flexible objects is the key parameter of study. The model array is first characterised by evaluating the role played by various parameters (configuration, flexibility, wave frequency) on the energy distribution in our system. Following these first observations, an interference model is then developed in order to describe the observed global effects of the array on both the wave field and the blade dynamics, based on known local parameters of a unit item of the array. This model then serves as a tool for exploring many possible array configurations, in order to determine the optimal choice regarding both the attenuation and the absorption of the imposed waves. A final experimental study is presented, in which the key results from the interference model are evaluated and the underlying principles of array optimisation are identified
Jansson, Elisabet. "Multi-buoy Wave Energy Converter : Electrical Power Smoothening from Array Configuration". Thesis, Uppsala universitet, Elektricitetslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-293689.
Pełny tekst źródłaDitlefsen, Arne Marius. "Wave Energy Conversion : Simulation Verification and Linearization of Direct Drive Wave Energy Converter with Variable DC-link Voltage Control". Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9912.
Pełny tekst źródłaLowering the cost of wave energy conversion is an essential task for it to succeed as a future energy resource. In this work a converter, assumed cheaper than the regular back to back converter setting, have been investigated for a electric direct drive point absorber. Both experimental work and simulations are used in the analysis. In the experimental work, a permanent magnet generator with a 6-pulse diode rectifier, a DC-link and a DC/DC converter equivalent, was used. Steady state, dynamic and transient measurements were preformed and a simulation model was compared to the measurements. Good results were obtained and deviations were in general small, mostly +-3% for voltage and current measurements and +-8% for torque measurements. Based on transient measurements and simulations a general linearization of the system was made in order to obtain useful information about the system. A step up converter was used in the simulation and it demonstrated stable passive loading control. By using the information obtained by the linearization, the performance of the simulation model was improved by decreasing the DC-link capacitance. The modified simulation model had significant less torque ripple than the initial. The linearization model also can been used to identify time delay represented by the power take off unit in a wave energy converter. This will be done for a commercial size wave energy converter summer 2009.
Evans, E. M. "Tidal stream energy". Thesis, University of Plymouth, 1987. http://hdl.handle.net/10026.1/515.
Pełny tekst źródłaNoad, Imogen Frances. "Absorbing power from ocean waves : a mathematical approach to modelling wave energy converters". Thesis, University of Bristol, 2018. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.752773.
Pełny tekst źródłaLi, Wei. "Numerical Modelling and Statistical Analysis of Ocean Wave Energy Converters and Wave Climates". Doctoral thesis, Uppsala universitet, Elektricitetslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-305870.
Pełny tekst źródła