Дисертації з теми "Crossways to the power"
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Saha, Nitai Chandra. "Vision of a poet : a study of W B Yeats`s poetry from crossways to the power." Thesis, University of North Bengal, 2006. http://hdl.handle.net/123456789/1167.
Повний текст джерелаBell, Alan Nigel. "The male novelist and the 'woman question' George Meredith's presentation of his Heroines in The Egoist (1879) and Diana of the Crossways (1885)." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1002245.
Повний текст джерелаStone, Michael H., William A. Sands, G. G. Sands, K. C. Pierce, and Michael W. Ramsey. "Power and Power Potentiation among Strength Power Athletes." Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etsu-works/4502.
Повний текст джерелаStone, Michael H., William A. Sands, Kyle C. Pierce, Michael W. Ramsey, and G. Gregory Haff. "Power and Power Potentiation among Strength-Power Athletes: Preliminary Study." Digital Commons @ East Tennessee State University, 2008. https://dc.etsu.edu/etsu-works/4138.
Повний текст джерелаSZANIECKI, BARBARA PECCEI. "POLITICAL POSTER: POWER AND POTENTIAL POWER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7141@1.
Повний текст джерелаA iconografia de Luís XIV foi um exemplo de representação da soberania onde a separação espacial e o acabamento perfeito das figuras refletia a organização social e política que a produzia. Contudo, fora da Igreja e do Estado, desenvolveram-se ao longo da modernidade, expressões estéticas opostas à representação do poder transcendental. Ao final do reinado de Luís XIV, surgiu um discurso histórico-político que, após revelar as múltiplas nações que lutam sob o Estado, autodialetizou-se quando, ao reivindicar uma função totalizadora, o Terceiro Estado retomou, de certa maneira, a tese monárquica onde a nação residia inteiramente na pessoa do rei. Esse movimento explicaria uma certa continuidade do discurso visual do poder - dos portraits monárquicos aos republicanos - por um lado e, por outro, a multiplicidade das formas de resistência: os cartazes políticos de maio de 68 foram a expressão das diversas nações contestadoras dos poderes e saberes constituídos daquele momento, manifestando o desejo de proximidade social e de renovação política através de elementos próximos da estética carnavalesca. Na transição contemporânea de uma soberania moderna para uma soberania imperial, a crise político-estético entre transcendência e imanência perdura. Por um lado, monarquia e aristocracia imperial apresentam a unidade transcendental através de recursos estéticos semelhantes. Por outro, no terceiro nível do Império, encontramos expressões estéticas que se afastam radicalmente das representações do poder e que denominamos manifestações de potência a partir da definição sociológica, política e ontológica de multidão.
Louis XIV´s iconography was an example of sovereignty representation in which the spatial separation and the perfect finishing of figures reflected the social and political organization that produced it. However, outside the Church and the State, aesthetic expressions opposed to transcendental representation were developed all along modern times. At the end of Louis XIV´s reign arose a historical-political discourse that, after revealing the multiple nations which fought under the State, dialectized itself when the Thiers- États, in the process of claiming a totalizing function, resumed to a certain extent the monarchic thesis in which the nation dwells entirely in the person of the king. This movement would explain on the one hand, a certain continuity of the visual discourse of power - from the monarchic to the republican portraits - and, on the other hand, the multiplicity forms of resistance: the May 1968 political posters were the expression of the diverse nations, contestant of the powers and knowledge constituted at that moment, and displayed the desire of social proximity and political renewal, through elements close to the aesthetic of Carnival. In the contemporary transition from a modern sovereignty to an imperial one, a politicalaesthetic crisis between transcendentalism and immanentism subsists. On the one hand, monarchy and imperial aristocracy introduce the transcendental unity through similar aesthetic resources. On the other hand, in the Empire third level, we find aesthetic expresions which fundamentally deviate from the representations of power and which we designate display of potential power from the sociological, political and ontological definition of multitude.
MIRIGALDI, ALESSANDRO. "Power scaling of high power lasersystems." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2966325.
Повний текст джерелаFalik, Adam. "Power." ScholarWorks@UNO, 2011. http://scholarworks.uno.edu/td/1310.
Повний текст джерелаLiu, Ning. "Our Power over Our Power : A paradigm shift in thederegulated power market." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-235464.
Повний текст джерелаRothkegel, Lisa. "The power of power : regime dynamics and the Southern African power pool." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79984.
Повний текст джерелаENGLISH ABSTRACT: Electricity is the key to economic growth and numerous aspects of human development. Africa’s installed generation capacity is dire, alongside it being the biggest funding backlog the power sector. There is however hope with the projection that to date, only 7% of this power potential has been harnessed. The increased acknowledgement of the importance of electricity for states to improve along with the knowledge that the capacity is there, has driven states within Southern Africa, to engage in increased and committed cooperation with one another. Within the greater vision of regional integration of the Regional Economic Communities (RECs) in Africa, energy was one of the first formal cooperative arrangements of the Southern African Development Community (SADC), which is the region this study will be focusing on. The form of electricity cooperation adopted was that of the Southern African Power Pool (SAPP), which is geared at increasing cross-border electricity trade and ensuring secure and reliable supply to its members. The study investigates the formation of an electricity regime within Southern Africa, by using the Southern African Power Pool as a case study. In order to properly assess the development of the SAPP, regime theory will be used. An analytical framework, derived from different studies around regime theory has been constructed. This framework assists in the analysis of the formation and evolution of the SAPP, which facilitates the assessment of the type of regime which has emerged, and guides a sound analysis around the degree of the electricity regimes effectiveness. Given the process of formation and characteristics underlying the SAPP, it has been found that it falls within the category of a negotiated regime. The analytical framework provided clear guidelines in assessing the degree of effectiveness regarding the case study at hand. After an analysis of the historical and organisational functioning of the regime - it can be argued that the SAPP is a stable and effective regime, at least on paper. It however faces various challenges, which have constrained its efficient functioning. It is concluded that members of the regime are committed to the SAPP’s continued development despite the problems identified.
AFRIKAANSE OPSOMMING: Elektrisiteit is die sleutel tot ekonomiese groei en baie ander aspekte van menslike ontwikkeling. Afrika se geïnstalleerde opwekkingskapasiteit is net so nypend soos die feit dat dit die grootste befondsing agterstand in die kragvoorsiening sektor is. Daar is egter hoop met die projeksie dat, tot op datum, slegs 7% van hierdie kragpotensiaal benut word. Die toenemende erkenning van die belang van elektrisiteit vir state om vooruit te gaan, gepaard met die wete dat die kapasiteit beskikbaar is, het state binne suider Afrika gedryf om hulle tot toenemende en volgehoue samewerking met mekaar te verbind. Binne die groter visie vir streeksintegrasie van die Streek se Ekonomiese Gemeenskappe (SEG) [Regional Economic Communities (REC)] in Afrika, was energie een van die eerste formele korporatiewe akkoorde van die Suider Afrikaanse Ontwikkelings Gemeenskap (SAOG) [Southern African Development Community (SADC)], wat die streek is waarop hierdie studie sal fokus. Die vorm wat elektrisiteit samewerking aangeneem het, was die Suider Afrika Krag Poel (SAKP) [Southern African Power Pool (SAPP)], wat aangepas is om elektrisiteithandel oor grense heen te bevorder en veilige, asook betroubare lewering aan die lede te verseker. Hierdie studie ondersoek die totstandkoming van ’n elektrisiteit ‘regime’ binne suider Afrika deur die SAKP as ’n gevalle studie te gebruik. Om die ontwikkeling van die SAKP behoorlikte asesseer, sal die regime teorie gebruik word. ’n Analitiese raamwerk, wat afgelei is van verskeie studies met betrekking tot regime teorie, is dus saamgestel. Hierdie raamwerk help met die analise van die totstandkoming en evolusie van die SAKP wat die asessering van die tipe regime, wat ontstaan het, vergemaklik en dit rig ook ‘n streng analise met betrekking tot die graad van effektiwiteit van die elektrisiteit regimes. Gegewe die proses van totstankoming en die eienskappe onderliggend aan die SAKP, is daar bevind dat dit binne die kategorie van ’n onderhandelde regime val (negotiated regime). Die analitiese raamwerk het duidelike riglyne voorsien om die effektiwiteitsgraad, met betrekking tot die gevallestudie, te assesseer. Na ’n analise van die historiese en organisatoriese funksionering van die regime – kan mens aanvoer dat die SAKP, ten minste op skrif, ’n stabiele en effektiewe regime is. Dit staar egter verskeie struikelblokke in die gesig, wat die effektiewe funksionering beperk. Daar kan egter afgelei word dat die lede van die regime toegewyd is tot die volgehoue ontwikkeling van die SAKP, ten spyte van die probleme wat geïdentifiseer is.
Mir, Cantarellas Antonio. "Competitive power control of distributed power plants." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/552958.
Повний текст джерелаActualmente, el sector eléctrico se encuentra inmerso en un profundo proceso de restructuración, donde de cada vez más se tiende a generar energía a nivel de distribución, mediante el uso de generación no convencional/renovable. Estas nuevas tecnologías de generación, referidas como generación distribuida, no proporcionan unicamente una fuente de energía no-contaminante, barata y eficiente para cubrir el incremento de demanda, sinó que también pueden proporcionar seguridad de suministro a cargas críticas, así como reducir la necesidad de expansiones futuras de red. Además de las capacidades técnicas proporcionadas, la generación distribuida hará posible la integración masiva de sistemas de generación renovable, con nuevos tipos de cargas y usuarios finales, como prosumidores, cargas regulables, o vehiculos eléctricos, donde todos estos usuarios participaran activamente en mercados de energía y servicios auxiliares, dependiendo de sus requisitos de uso de energía. Por lo tanto, el trabajo realizado en esta tesis se centra en el diseño e implementación de soluciones jerárquicas de control avanzado en plantas de generación renovable, con el objetivo de obtener un comportamiento harmonioso de intercacción con la red, mientras la operación de la planta maximiza los beneficios derivados de su operación en tiempo real. Inicialmente, se ha llevado a cabo una revisión extensa sobre los sistemas de control jerárquico comunmente implementados en plantas de generación renovable, en microredes y en redes inteligentes. Una vez revisados los principales sistemas de control jerárquico en este tipo de aplicaciones, se propone un una novedosa estructura de control, que cubre todos los niveles de control posibles, desde el más alto nivel de gestión económica, hasta el control detallado del recurso de generación. Para lograr capacidades de control en tiempo real en sistemas activos de distribución, la presente tesis propone una nueva estrategia de control de reparto de potencia, basada en la operación competitiva de múltiples agentes participantes activos (generadores distribuidos, respuesta de demanda y sistemas de almacenamiento de energía) mediante la implementación de reglas del mercado. Dichas capacidades de control se satisfacen aplicando una señal de precio a lo largo de toda la arquitectura de control, siendo el agente de final, el ente responsable de decidir su propia participación en la generación/demanda en función de sus propios costes de electricidad marginales o asumibles. Además, reduce el volumen de información a transmitir y los requisitos de procesamiento de datos, ya que los niveles de control más altos no necesitan tener conocimiento sobre la topología del sistema de distribución detallado ni de la contribución de los actores adyacentes. Para llevar a cabo una evaluación significativa de las capacidades del controlador competitivo propuesto, se ha seleccionado una planta de generación undimotriz, como escenario más desfavorable, ya que el controlador debe asegurar un control estable de la potencia inyectada en un escenario altamente oscilante. Con el fin de caracterizar adecuadamente el perfil de recursos de energía de las olas resultante de la máxima absorción de energía, esta Tesis introduce un nuevo controlador de vector adaptativo, que maximiza la extracción de energía del recurso independientemente de las características dominantes de frecuencia de onda irregular. Para la aplicación de la planta de energía de onda específica considerada, el control competitivo no solo garantiza la asignación óptima de recursos en tiempo real para satisfacer un objetivo de producción dado, sino que también proporciona una operación óptima del sistema a largo plazo. Como resultado, se pueden lograr reducciones generales de los costos de la planta en el marco de la operación competitiva, ya que la energía programada de la planta se satisface haciendo uso de las unidad
Navarrete, Pablo-Romero Javier. "Power Quality for Distributed Wind Power Generation." Thesis, KTH, Elektroteknisk teori och konstruktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105221.
Повний текст джерелаStandUp
Forestiere, Giuseppe. "Ultra-low power circuits for power management." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143812.
Повний текст джерелаMorales, Ana. "Impact of decentralized power on power systems." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210841.
Повний текст джерелаIn order to guard the system security and quality of supply and retain acceptable levels, a maximum allowed wind power penetration (wind margin) is normally assumed by the operators. Very conservative methods are used to assess the impact of wind power and the consequences turn to under-exploitation of the wind power potential in a given region. This thesis presents the study of actual methods of wind power assessment, divided into three parts:
1. Part I: Impact on the Security of Power Systems
2. Part II: Impact on the Power Quality
3. Part III: Impact on the Dynamic Security of Power Systems
Doctorat en sciences appliquées
info:eu-repo/semantics/nonPublished
Fadda, Mario. "Aspects of power domains and power locales." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24001.
Повний текст джерелаSuwanapingkarl, Pasist. "Power quality analysis of future power networks." Thesis, Northumbria University, 2012. http://nrl.northumbria.ac.uk/12625/.
Повний текст джерелаPesoti, Paulo Murinelli. "Power system restorations assisted by wind power." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=30465.
Повний текст джерелаDancy, Abram P. (Abram Paul). "Power supplies for ultra low power applications." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10069.
Повний текст джерелаIncludes bibliographical references (p. 101-103).
by Abram P. Dancy.
M.Eng.
Sun, Yuhao. "Power optimised narrowband power-line communication systems." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648110.
Повний текст джерелаSnyder, Rebecca. "The Power of Architecture: Architecture of Power." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397477684.
Повний текст джерелаSolhall, Axel, and Edvin Guéry. "Coordination of Wind Power and Hydro Power." Thesis, KTH, Industriell ekologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210740.
Повний текст джерелаEireiner, Matthias. "Power supply integrity in low power designs." Aachen Shaker, 2009. http://d-nb.info/99845642X/04.
Повний текст джерелаPIUMATTI, DAVIDE. "Reliability in Power Electronics and Power Systems." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2918006.
Повний текст джерелаÜlker, Muhammed Akif. "Balancing of Wind Power : Optimization of power systems which include wind power systems." Thesis, Högskolan på Gotland, Institutionen för kultur, energi och miljö, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-1335.
Повний текст джерелаFan, Philex Ming-Yan. "Power management and power conditioning integrated circuits for near-field wireless power transfer." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/290143.
Повний текст джерелаGranlund, Robert. "Russan Power Projection and Power Ministries : A Study in Russian Power Ministry Influence." Thesis, Försvarshögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-3975.
Повний текст джерелаLi, Yiyang. "Novel power converter topologies to interface solar power to power grid with battery backup." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23269.
Повний текст джерелаYu, Jung-Min. "Political economy of power liberalization and power transformation." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 270 p, 2010. http://proquest.umi.com/pqdweb?did=1997524051&sid=4&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаPrincipal faculty advisors: Young-Doo Wang, School of Urban Affairs & Public Policy; and John Byrne, Center for Energy and Environmental Policy. Includes bibliographical references.
Lyon, Robert Allen. "Prime power for shipboard high-average power FELs." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA293718.
Повний текст джерелаThesis advisor(s): Robert W. Ashton, Robert L. Armstead, W.B. Colson. "December 1994." Includes bibliographical references. Also available online.
Montenegro, León Alejandro. "Advanced power electronic for wind-power generation buffering." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010112.
Повний текст джерелаYousefzadeh, Vahid. "Digitally controlled power converters for RF power amplifiers." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3219220.
Повний текст джерелаCvetkovic, Milos. "Power-Electronics-Enabled Transient Stabilization of Power Systems." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/344.
Повний текст джерелаEl-Damak, Dina Reda. "Power management circuits for ultra-low power systems." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99821.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 137-145).
Power management circuits perform a wide range of vital tasks for electronic systems including DC-DC conversion, energy harvesting, battery charging and protection as well as dynamic voltage scaling. The impact of the efficiency of the power management circuits is highly profound for ultra-low power systems such as implantable, ingestible or wearable devices. Typically the size of the system for such applications does not allow the integration of a large energy storage device. Therefore, extreme energy efficiency of the power management circuits is critical for extended operation time. In addition, flexibility and small form factor are desirable to conform to the human body and reduce the system's over all size. Thus, this thesis presents highly efficient and miniature power converters for multiple applications using architecture and circuit level optimization as well as emerging technologies. The first part presents a power management IC (PMIC) featuring an integrated reconfigurable switched capacitor DC-DC converter using on-chip ferroelectric caps in 130 nm CMOS process. Digital pulse frequency modulation and gain selection circuits allow for efficient output voltage regulation. The converter utilizes four gain settings (1, 2/3, 1/2, 1/3) to support an output voltage of 0.4 V to 1.1 V from 1.5 V input while delivering load current of 20 [mu]A to 1 mA. The PMIC occupies 0.366 mm² and achieves a peak efficiency of 93% including the control circuit overhead at a load current of 500 [mu]A. The second part presents a solar energy harvesting system with 3.2 nW overall quiescent power. The chip integrates self-startup, battery management, supplies 1 V regulated rail with a single inductor and supports power range of 10 nW to 1 [mu]W. The control circuit is designed in an asynchronous fashion that scales the effective switching frequency of the converter with the level of the power transferred. The ontime of the converter switches adapts dynamically to the input and output voltages for peak-current control and zero-current switching. The system has been implemented in 180 nm CMOS process. For input power of 500 nW, the proposed system achieves an efficiency of 82%, including the control circuit overhead, while charging a battery at 3 V from 0.5 V input. The third part focuses on developing an energy harvesting system for an ingestible device using gastric acid. An integrated switched capacitor DC-DC converter is designed to efficiently power sensors and RF transmitter with a 2.5 V regulated voltage rail. A reconfigurable Dickson topology with four gain settings (3, 4, 6, 10) is used to support a wide input voltage range from 0.3 V to 1.1 V. The converter is designed in 65 nm CMOS process and achieves a peak efficiency of 80% in simulation for output power of 2 [mu]W. The last part focuses on flexible circuit design using Molybdenum Disulfide (MoS₂), one of the emerging 2D materials. A computer-aided design flow is developed for MoS₂-based circuits supporting device modeling, circuit simulation and parametric cell-based layout - which paves the road for the realization of large-scale flexible MoS₂ systems.
by Dina Reda El-Damak.
Ph. D.
Al-Anfaji, Ahmed Suaal Bashar. "The optimization of combined power-power generation cycles." Thesis, University of Hertfordshire, 2015. http://hdl.handle.net/2299/15485.
Повний текст джерелаShams, Solary Arasto. "Wind power plants integration to the power grid." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200633.
Повний текст джерелаAmarasinghe, Kanishka A. "Resonance mode power supplies with power factor correction." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/23672.
Повний текст джерелаArana, Andrew Jex. "Power Systems Analysis in the Power-Angle Domain." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/30001.
Повний текст джерелаPh. D.
Nilsmo, Oscar, and Ludwig Abrahamsson. "A comparison of wind power and nuclear power." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232559.
Повний текст джерелаIn 2019 and 2020, the nuclear reactors Ringhals 1 and 2 will be taken out of production. This report aims to investigate the required number of wind power plants that have to be constructed to equate the annual production of electricity of the Ringhals reactors. Subsequently, the report evaluates national considerations in connection to the required construction of wind power stations regarding the use of land, necessary deforesting, the existing use of wind power stations in Sweden and the cost and carbon dioxide emissions of producing new wind power stations to compensate for the removal of Ringhals 1 and 2. To replace the production of electricity from Ringhals 1 and 2, 1,927 wind power stations with a distance of 4-10 rotor diameters depending on the geographical position, necessitating a minimum area of 970 km2 designated for wind powered electricity production. The cost for production and maintenance of the 1,927 wind power stations is estimated to 42 billion SEK. In a life cycle analysis of the total carbon emissions, the transport of material and subsequent production, maintenance and demolition of 1,927 wind power stations is estimated to produce a total of 936,500 metric tonnes of carbon dioxide and the corresponding amount for the production of Ringhals is estimated to 2,500,000 metric tonnes.
Beikoff, Geoffrey Noel. "A high power, high voltage switching power supply." Thesis, Queensland University of Technology, 1992. https://eprints.qut.edu.au/36226/1/36226_Beikoff_1992.pdf.
Повний текст джерелаMakhalas, Kharsan Al, and Faisal Alsehlli. "Wind Power." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4336.
Повний текст джерелаIn general the wind turbines with three blades accommodated a thicker root are used. It is obvious that, the less number of blades on the wind turbine, the cost of material and manufacturing will be lower. It is worthy to mentioned that, the modern wind turbine has been built with an odd number of blades. When the length of the blade increases the deflection of blade tip due to axial wind force also increase as well. So without consider the increase in length of blade may lead to dangerous situation of collision of tower and blade. Moreover, by increasing the number of blades cost of the system would increased as well. The limit of transfer for the AC transmission system depends on the distance from shore and is therefore physically limited by this. AC large wind parks that are placed at a long distance from the shore, which means AC long transmission line, and more drop voltage A solution to AC long transmission line, it could be to decrease the offshore frequency and use a low frequency AC networks. There is a suggestion by for instance (Schütte, Gustavsson and Ström 2011). The usages of a low frequency system are in electrified railway systems, where the frequency ranges from 16.67 Hz to 25 Hz. However, the network of a low frequency would allow a simpler design of the offshore WTs and The aerodynamic rotor of a large WT operates at maximum revolutions at 15-20 rpm. The lower frequency would then allow a smaller gear ratio for turbines with a gearbox, or decrease the poles number for WTs with direct driven generators. This would lead to lighter and cheaper turbines. One of the disadvantages by using a low frequency system is the size of transformer would be increased, and hence, the costs of transformer will increased too. The operator of the grid, Gotland Energy AB (GEAB) considered, that HVDC light would be the only realistic way to solve the technical problems for the high amount of wind power in-feed. The experiences have supported expected improvements in the characteristics for example: - Stability in the system arose. - Reactive demands, power flows, as well as voltage level in the harmonic and system were reduced. - Flicker problems were eliminated with the installation of HVDC light and transient phenomena disappeared. Moreover, Overall experiences of Gotland Energy AB (GEAB) are that the control of power flow from the converters makes the AC grid easier to observe than a conventional AC network and the power variations do not stress the AC grid as much as in normal network. Voltage quality has been better with the increased wind power production. A topic to study in the future is the consequences of blackouts in power supply with many wind power farm.
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Bernardo, Espinoza Patricia, Mogollon Gisella Lucero Cepeda, Huanaco Claudia Paola Pacasi, Muñoz Flor Maximina Rojas, and Limachi Everardo Tacca. "Quinua Power." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/655540.
Повний текст джерелаQuinoa Power has been created with the purpose of providing a new option for consuming cereals to all those who seek to take care of their diet and to those who fight any nutritional disease that prevents them from developing their growth or development in the student environment. This product consists of the production of cereals based on quinoa. This is considered an essential Andean grain in the diet of everyone, due to its nutritional properties. In the region, Peru and Bolivia are the main producers of this grain and each year national consumption goals are established, seeking to strengthen the nutritional health of people, but especially of their children. Production and sale operations will begin in Metropolitan Lima. This product is aimed at men, women and children who are between 15 and 35 years of age and belong to socioeconomic levels C and D, who, at present, show the highest growth in consumption of this type of product. This project will last for 3 years; to start operations, it will be necessary to invest S / 23,585.00; of which 80% will be a shareholder contribution and 20% will be financed through an angel investor. Among the indicators obtained for this project, there is a weighted average cost of capital of 16.67%, NPV of S / 19,884 that indicates that the investment is recovered within 3 years and an IRR of 60.90% that indicates that the project is profitable. Finally, with these indicators we can confirm that the project is viable since it has an adequate recovery time and high profitability rates.
Trabajo de investigación
Strokin, О. О. "Nuclear power." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/33870.
Повний текст джерелаЗолотова, Світлана Григорівна, Светлана Григорьевна Золотова, Svitlana Hryhorivna Zolotova, and D. A. Mazur. "Tidal power." Thesis, Вид-во СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/22050.
Повний текст джерелаSaville, Marco. "Power playground." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25425.
Повний текст джерелаLembke, Fritiof, and Tarek Penser. "Tidal Power." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209541.
Повний текст джерелаTidvattenkraft är ett relativt nytt område inom förnybar energi med stor potential i vissa delar av världen. Ett företag som arbetar med just detta är Minesto som tagit fram en teknologi som heter Deep Green och tagit inspiration från drakflygning för att generera energi från havet. Syftet med projektet är att åt Minesto genomföra en informationssökning om konkurrerande teknologier till Deep Green, att med modeller beskriva Deep Green teknologin samt föreslå förbättringar av den nuvarande lösningen. Studien är indelad i två delar och börjar med informationssökning om Minesto och andra företag som arbetar med tidvattenkraft. Den andra delen är en modelleringsfas där modeller som beskriver Deep Greens rörelse tas fram och även krafter för vidare dimensionering av komponenter i systemet. Informationssökningen visade att Minesto har tydliga fördelar i jämförelse med de andra konkurrenter som undersökts. Framför allt att Deep Green kan producera elektricitet effektivt vid låga vattenhastigheter och att kraftverken är relativt lätta. Modelleringen visade att vingen rör sig närmre botten vid högre vattenhastigheter och att vissa komponenter i systemet är överdimensionerade och skulle kunna göras lättare.
Vice, President Research Office of the. "Pellet Power." Office of the Vice President Research, The University of British Columbia, 2009. http://hdl.handle.net/2429/9507.
Повний текст джерелаCamere, Salcedo Renzo Fabian, Reaño Jesus Salvador Enco, Silva Adrian Gonzalez, and Balarezo Adela Catherine Vassallo. "Power EGG." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626421.
Повний текст джерелаToday, Peruvian government establishes healthy protection norms for children in order to protect their health. For that reason, the food industry and Peruvian consumer have been changing their shopping habits and healthy consumption. Faced with these changes, it has been detected the opportunity to offer a healthy and nutritious food product contributing to the health of Peruvian children. “Power Eggs” seeks to position itself on the Peruvian market in segments A, B and C as a nutritional supplement, providing mothers with an alternative nutrition for the daily consumption of children. The market we aim for is made up of 9, 485,406 women with children between the ages of 0 to 12 years in the city of Lima, for which we have a target market of 1, 171,437 people. One of the main objectives is to reach a 20% of participation on the target, as an annual growth of 10% in the next 5 years. It main strategy is to position a differential product to support healthy eating in the peruvian market.
Trabajo de investigación
Stone, Michael H. "Power Development." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etsu-works/4581.
Повний текст джерелаBell, Alan Nigel. "The male novelist and the 'woman question' : George Meredith's presentation of his Heroines in the Egoist (1879) and Diana of the Crossways (1885) /." 2007. http://eprints.ru.ac.za/1379/.
Повний текст джерелаBapi, Raju V. "On power flows and optimal power flows of integrated power systems." Thesis, 1990. http://localhost:8080/xmlui/handle/12345678/5434.
Повний текст джерелаTudu, Jaynarayan Thakurdas. "Power Issues in SoCs : Power Aware DFT Architecture and Power Estimation." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/3003.
Повний текст джерела