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Rozprawy doktorskie na temat „Generator mode”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Muñoz, Aguilar Raúl Santiago. "Sliding mode control of the stand alone wound rotor synchronous generator." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/5960.

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En esta Tesis ha sido analizado el control de la màquina sincrónica de rotor bobinado actuando en isla. Para esta configuración, la velocidad mecànica determina la frecuencia, y la tensión de rotor se utiliza para fijar la amplitud de la tensión de estator. Debido a que la constante de tiempo eléctrica es mucho más ràpida comparada con la constante de tiempo mecánica, la velocidad mecánica fue considerada constante y externamente regulada y la investigación se enfocó en la regulación de la amplitud de la tensión de estator.<br/><br/>Cuatro diferentes controladores basados en técnicas de modos

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2

Goh, Keng Boon. "Fault diagnosis and control of a diesel power generator using sliding mode techniques." Thesis, University of Leicester, 2004. http://hdl.handle.net/2381/30217.

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The sliding mode concept, which is based on the notion of a variable structure system, has inherent advantages of robustness and performance specification and is here applied to the problems of fault diagnosis and control of the diesel engine. A real-time condition monitoring and fault diagnosis system and also control system using sliding mode techniques are described. The designs are assessed through tests on a particular Perkins diesel-electric power generator. A model-based approach incorporating a non-linear sliding mode observer scheme is proposed for fault monitoring. The diesel engine

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3

Mohamed, Ahmed Naguib Elsayed. "High Resolution, Wide Bandwidth and Multi-mode Arbitrary Waveform Generator (AWG) for Telemetry Applications." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543521490583405.

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4

Huang, Yuansheng. "Sliding Mode Observer Design for Permanent Magnetic Synchronous Generator Based Wind Energy Conversion Systems." Thesis, Southern Illinois University at Edwardsville, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10258376.

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<p> Real-time rotor position and speed information is essential for effective power control of permanent magnet synchronous generator-based wind energy conversion systems. The presence of traditional encoders can increase the size, cost and complexity, but also reduce the overall system life-time and reliability. To provide a more reliable sensorless wind generation control scheme and eliminate the reliance on encoders, this paper presents a novel high order sliding mode observer for power control of permanent magnet synchronous generator-based wind energy conversion systems. Compared with the

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BOCCALERO, GREGORIO. "Development of a novel coupled-mode fluttering energy harvester through electromagnetic coupling and dielectric elastomer generator." Doctoral thesis, Università degli studi di Genova, 2018. http://hdl.handle.net/11567/929821.

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The topic of the research is the development of a novel energy harvester exploiting fluids in motion. FLEHAP device (Fluttering Energy Harvester for Autonomous Powering, patent pending), conceived and developed at DIFI of University of Genova, is an aeroelastic flutter-based system of an airfoil exploiting an electromagnetic coupling (EMc) and smart materials to extract electrical energy from the wind. It is performed the experimental study of the aeroelastic system through different prototypes, highlighting the main operating parameters and their correlations, analyzing the kinematics and th

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6

Agnoletto, Elian João. "Análise dos tempos máximos de chaveamento dos modos de operação de um grupo gerador diesel após ilhamento." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-03092015-095042/.

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A produção de energia elétrica por fontes de geração distribuída (GD) vem se tornando cada vez mais presente no sistema elétrico de potência. De modo geral, os sistemas de GD conectados à rede de distribuição operam controlando potências ativa e reativa, enquanto que no modo isolado, a frequência e a tensão. Sendo assim, após a ocorrência de um ilhamento deve haver alteração no modo de operação da GD para garantir a estabilidade da frequência e da tensão no subsistema ilhado. Ainda, se o modo de operação não for alterado após o ilhamento, os dispositivos de proteção podem atuar desligando a GD

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7

Chen, Hao. "Modeling and control of a marine current energy conversion system using a doubly salient permanent magnet generator." Nantes, 2014. http://archive.bu.univ-nantes.fr/pollux/show.action?id=83aa318a-2539-4dda-aa76-c57351bf6c09.

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Parmi les énergies marines renouvelables hors éolien posé, toutes naissantes, l’énergie des courants marins (énergie hydrolienne) est susceptible de déboucher sur une exploitation commerciale et industrielle à moyen terme. C’est une énergie intermittente, mais très prévisible, ce qui facilite son intégration au réseau. Les travaux réalisés dans cette thèse rentrent dans ce contexte et ont pour objectif la modélisation et la commande d’une chaîne de conversion d’énergie hydrolienne. Cela nécessite une modélisation multiphysique allant de la ressource jusqu’à l’intégration au réseau électrique,

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8

Katariya, Ashish Santosh. "Dynamic modeling and feedback control with mode-shifting of a two-mode electrically variable transmission." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45825.

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This thesis develops dynamic models for the two-mode FWD EVT, develops a control system based on those models that is capable of meeting driver torque demands and performing synchronous mode shifts between different EVT modes while also accommodating preferred engine operating points. The two-input two-output transmission controller proposed herein incorporates motor-generator dynamics, is based on a general state-space integral control structure, and has feedback gains determined using linear quadratic regulator (LQR) optimization. Dynamic modeling of the vehicle is categorized as dynamic mo

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9

Ablay, Gunyaz. "Sliding Mode Approaches for Robust Control, State Estimation, Secure Communication, and Fault Diagnosis in Nuclear Systems." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354551858.

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10

Dansoko, Mamadou. "Modélisation et commande non linéaire des hydroliennes couplées à un réseau électrique." Thesis, Paris 13, 2014. http://www.theses.fr/2014PA132047/document.

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L’objectif de cette thèse est de développer des stratégies de commande non linéaire et robuste afin d’assurer une connexion avec succès des systèmes hydroliens dans un réseau électrique de forte puissance. Il s’agira en plus, d’étudier en simulation et en pratique le comportement dynamique de ses systèmes hydroliens commandés suite à des perturbations sévères. Dans un premier temps, nous nous sommes intéressés à la modélisation de tous les éléments de la chaine de production d’énergie hydrolienne, en partant de la marée jusqu’à la génératrice synchrone. Dans un second temps, nous avons proposé

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11

Liu, Jingbo. "Modeling, analysis and design of integrated starter generator system based on field oriented controlled induction machines." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1132763176.

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12

Adabi, Firouzjaee Jafar. "Remediation strategies of shaft and common mode voltages in adjustable speed drive systems." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/39293/1/Jafar_Adabi_Firouzjaeel_Thesis.pdf.

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AC motors are largely used in a wide range of modern systems, from household appliances to automated industry applications such as: ventilations systems, fans, pumps, conveyors and machine tool drives. Inverters are widely used in industrial and commercial applications due to the growing need for speed control in ASD systems. Fast switching transients and the common mode voltage, in interaction with parasitic capacitive couplings, may cause many unwanted problems in the ASD applications. These include shaft voltage and leakage currents. One of the inherent characteristics of Pulse Width Modu

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13

Liu, Jiannan. "Multi-Functional Inverter Based Microgrid for Power Quality Improvement with Smooth Transient Performance." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/392404.

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The increasing utilisation of renewable energy sources (RESs) plays an important role in the modern power system. The high penetration of the RESs in the electrical power network leads to challenges to the system’s stability. Therefore, the microgrid concept is proposed to solve such problems due to its flexibility and practicality. The hybrid AC/DC microgrid configuration is compatible with AC power supplies, DC power supplies, AC loads and DC loads which is viewed as the most practical choice in the power system application. The microgrid utilises an interlinking converter for the system’s c

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14

Liu, Xinyi. "Contribution to adaptative sliding mode, fault tolerant control and control allocation of wind turbine system." Thesis, Belfort-Montbéliard, 2016. http://www.theses.fr/2016BELF0295/document.

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Les principaux défis pour le déploiement de systèmes de conversion de l'énergie éolienne est de maximiser la puissance électrique produite, malgré les variations des conditions météorologiques, tout en minimisant les coûts de fabrication et de maintenance du système. L'efficacité de la turbine éolienne est fortement dépendante des perturbations de l'environnement et des paramètres variables du système, tels que la vitesse du vent et l'angle de tangage. Les incertitudes sur le système sont difficiles à modéliser avec précision alors qu'ils affectent sa stabilité.Afin d'assurer un état de foncti

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15

Silva, Maurício Mendes da. "Controlador por modos deslizantes de segunda ordem aplicado a um compensador síncrono estático de distribuição." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/8561.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>In the recent years we have seen that due scarcity of fossil fuels it becomes increasingly important the improvement of renewable energy such as micro hydro generation, solar energy, wind power and others. The reason for such importance is related to the consolidation of what has being called future in terms of power generation, which is based on power generation through decentralization of interconnected small generators and consumer centers. The distribution level, distributed on generation sources along with the loads connected

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16

Alsmadi, Yazan M. "Modeling, Advance Control, and Grid Integration of Large-Scale DFIG-Based Wind Turbines during Normal and Fault Ride-Through Conditions." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437140573.

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17

Zhi, Dawei. "Model based doubly fed induction generators cotrol for wind energy generation." Thesis, University of Strathclyde, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510726.

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18

Duhan, Isac. "Design of Automated Generation of Residual Generators for Diagnosis of Dynamic Systems." Thesis, Linköpings universitet, Fordonssystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72183.

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Diagnosis and Supervision of technical systems is used to detect faults when they occur. To make a diagnosis, tests based on residuals can be used. Residuals are used to compare observations of the system with a model of the system, to detect inconsistencies. There are often many different types of faults which affects the state of the system. These states are modeled as fault modes. The difference between fault modes are the presence of faults in the model. For each fault mode a different set of model equations is used to describe the behaviour of the real system. When doing fault diag

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19

Muhr, Eloi. "Conception de générateurs d'impulsions et des circuits de mise en forme reconfigurables associés." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4346.

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Depuis 2002, différentes bandes de fréquences de plusieurs GHz dites « Ultra-Large Bande » (ULB), généralement comprises entre 3,1GHz et 10,6GHz, ont été libérées de par le monde pour la transmission d’informations sans fil. La largeur de ces bandes est telle qu’il devient envisageable d’utiliser des impulsions comme support de l’information en lieu et place d’une porteuse modulée comme cela est le cas habituellement. En effet, le spectre d’une impulsion étant inversement proportionnel à sa durée, une large plage de fréquences est requise pour la transmission d’informations via des impulsions.

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20

Sellami, Takwa. "Contribution à l’usage de l’analyse vibratoire comme outils de monitoring et de diagnostic d’avaries pour les machines électriques tournantes." Thesis, Cergy-Pontoise, 2017. http://www.theses.fr/2017CERG0915.

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Les capacités installées d’énergie éolienne continuent à croître rapidement et prennent une place de plus en plus significative dans le monde. Au fur et à mesure, les études menées sur la conception, la sureté de fonctionnement et la supervision de la chaîne éolienne ont pris progressivement de l’importance. Deux axes de recherche ont été privilégiés dans cette thèse. Le premier concerne la continuité de service d'une éolienne connectée au réseau en présence de défaut de court-circuit entre spires dans une phase du stator de la génératrice asynchrone à cage d'écureuil. L'analyse du défaut ains

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21

Pu, Davide. "Demand and Capacity Problems in the Next Generation Air Transportation System." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51218.

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This thesis investigates two main aspects of air transportation system, demand and capacity. The first study aims to estimate the potential market for Zip Vehicles, an advanced commuter type of aircraft equipped with automation and electric propulsion technologies. A Multinomial Logit Model was developed to estimate the mode choice behavior of commuters between Zip vehicle, auto and transit in seven metropolitan areas in the United States. The results showed that the Out-of-Vehicle travel time plays an important role in the decision process of commuters. Zip Vehicle is predicted to achieve res

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22

Bernardes, Thiago Araújo. "Controle sem sensores mecânicos para gerador síncrono a ímã permanente." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/3693.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This Thesis proposes sensorless vector control schemes that combine designed observers in the discrete-time domain to estimate the rotor position and speed for a permanent magnet synchronous generator of non-salient poles. Two control schemes are proposed. The first scheme is based on a discrete sliding mode current observer in series with an adaptive electromotive force observer. Then, the sliding conditions that assure the sliding motion around the sliding surface are derived to ensure the stability of the current observer as wel

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23

Elkins, Gregory L. "Hardware model of a shipboard generator." Thesis, Monterey, California. Naval Postgraduate School, 2009. http://hdl.handle.net/10945/4300.

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CIVINS<br>Approved for public release, distribution unlimited<br>A hardware model of the Gas Turbine Generator (GTG) in use on the US Navy's DDG-51 Class Destroyer is constructed for use as a lab apparatus at the Massachusetts Institute of Technology's Laboratory for Electromagnetic and Electronic Systems (LEES). The components of the hardware model include a 5 kilowatt three-phase generator; DC power supplies and motors that function as the prime mover; computer software to implement speed and voltage control; and an input-output interface board that passes measurement and controller signals

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Elkins, Gregory L. (Gregory Lewis). "Hardware model of a shipboard generator." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/49875.

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Thesis (Nav. E. and S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 65).<br>A hardware model of the Gas Turbine Generator (GTG) in use on the US Navy's DDG-51 Class Destroyer is constructed for use as a lab apparatus at the Massachusetts Institute of Technology's Laboratory for Electromagnetic and Electronic Systems (LEES). The components of the hardware model include

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Svärd, Carl, and Henrik Wassén. "Development of Methods for Automatic Design of Residual Generators." Thesis, Linköping University, Department of Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7931.

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<p>Legislation requires substantially lowered emissions and that all trucks manufactured are equipped with an On-Board Diagnosis (OBD) system. One approach for designing an OBD system is to use model based diagnosis and residual generation. At Scania CV AB, a method for automatic design of a diagnosis system from a model has been developed but there are still possibilities for improvements to get more and better residual generators. The main objective of this thesis is to analyze and improve the existing method.</p><p>A theoretic outline of two methods using different causality assumptions is

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Sultan, Almaghthawi. "Umple C++ Code Generator." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26133.

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We discuss the design and analysis of a code generator for C++, implemented in the Umple model-oriented programming technology. Umple adds UML constructs and patterns to various base programming languages such as Java and PhP. Umple code generators create code for those constructs, which can include UML associations and state machines, as well as patterns such as immutable and singleton. Base language methods are passed through unchanged along with the generated code. Creating a C++ code generator for Umple posed many challenges, all of which are discussed in this thesis: We had to focus on th

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27

Holst, Andy. "Automatic Transcript Generator for Podcast Files." Thesis, Linnaeus University, School of Computer Science, Physics and Mathematics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-6936.

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<p>In the modern world, Internet has become a popular place, people with speech hearing disabilities and search engines can't take part of speech content in podcast les. In order to solve the problem partially, the Sphinx decoders such as Sphinx-3, Sphinx-4 can be used to implement a Auto Transcript Generator application, by coupling already existing large acoustic model, language model and a existing dictionary, or by training your own large acoustic model, language model and creating your own dictionary to support continuous speaker independent speech recognition system.</p>

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Stockwell, Kathryn S. "Automatic phased mission system reliability model generation." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13583.

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There are many methods for modelling the reliability of systems based on component failure data. This task becomes more complex as systems increase in size, or undertake missions that comprise multiple discrete modes of operation, or phases. Existing techniques require certain levels of expertise in the model generation and calculation processes, meaning that risk and reliability assessments of systems can often be expensive and time-consuming. This is exacerbated as system complexity increases. This thesis presents a novel method which generates reliability models for phasedmission systems, b

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Muhr, Eloi. "Conception de générateurs d'impulsions et des circuits de mise en forme reconfigurables associés." Electronic Thesis or Diss., Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4346.

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Depuis 2002, différentes bandes de fréquences de plusieurs GHz dites « Ultra-Large Bande » (ULB), généralement comprises entre 3,1GHz et 10,6GHz, ont été libérées de par le monde pour la transmission d’informations sans fil. La largeur de ces bandes est telle qu’il devient envisageable d’utiliser des impulsions comme support de l’information en lieu et place d’une porteuse modulée comme cela est le cas habituellement. En effet, le spectre d’une impulsion étant inversement proportionnel à sa durée, une large plage de fréquences est requise pour la transmission d’informations via des impulsions.

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30

Suchomel, Vít. "Analýza hybridního synchronního generátoru metodou konečných prvků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-399570.

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This work deals with calculation and design of synchronous salient pole generator and then the transformation from this machine into so-called hybrid synchronous machine is described. This diploma thesis is done for company Siemens Electric Machines s.r.o. in Drásov. This company provided their design of synchronous salient pole generator. The model of this generator was created in programs RMxprt and Maxwell 2D. Suggestions and models were compared, and their calculated parameters were evaluated. The created model was upgraded to so-called hybrid synchronous generator. Permanent magnets were

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31

PALMIERI, ALESSANDRO. "Gas Turbine Power Generators, Innovative Sliding Mode Load Controller." Doctoral thesis, Università degli studi di Genova, 2021. http://hdl.handle.net/11567/1049110.

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This thesis deals with the design of an innovative load controller for heavy-duty gas turbine power generators and with its practical implementation on real industrial power plants. A robust controller based on the Sliding Mode control technique is designed, in order to improve the performance of the gas turbine system with respect to the traditional Proportional-Integral-Derivative based regulation currently employed. As a matter of fact, such regulation encounters many difficulties when the system operates in off-design conditions, which is the most frequent situation, leading to a deteriora

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32

Zou, Xiaolan. "Frequency and Damping Characteristics of Generators in Power Systems." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/81937.

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A power system stability is essential for maintaining the power system oscillation frequency within a small and acceptable interval around its nominal frequency. Hence, it is necessary to study and control the frequency for stable operation of a power system by knowing the characteristics within a power system. One approach is to understand the effectiveness of frequency and damping characteristics of generators in power systems. Hence, the simulation analysis of IEEE 118-bus power system is used for this study. The analysis includes theoretical analysis with a mathematical approach and simula

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Buyukatalay, Soner Mr. "3d Face Model Generation." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605672/index.pdf.

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Generation of photo-realistic 3D human face models is a hot topic in the area joining computer graphics and computer vision. Many different techniques are used for this purpose, but most of them are not feasible for home users. These techniques may use advanced hardware such as laser scanners, calibrated stereo cameras, or very sophisticated software that can be as expensive as advanced hardware. Face model generation by morphing an initial 3D model with uncalibrated camera photographs is studied in this thesis. Manually marked feature points on photographs are used to deform initial 3D face m

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Xu, Changyi. "Operational dependability model generation." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI129.

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L'objectif à long terme des ingénieurs et des chercheurs est d'évaluer la fiabilité des systèmes industriels complexes. Les évaluations de la sécurité fondées sur des modèles effectuées ces dernières années, en particulier les études d'analyse structurelle et de modélisation des composants, fournissent des méthodes pratiques d'évaluation de la fiabilité,Toutefois, l'absence d'un cadre permettant d'évaluer simultanément la structure et les comportements des différents éléments d'un modèle unifié n'a pas permis d'obtenir d'excellentes évaluations. En outre, les opérations du système n'étant pas

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Lu, Yujie Irene. "Real-time digital simulation of the generator model." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/42061.

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<p>This thesis is in an attempt to realistically model a real-time digital generator which interfaces to an analog system simulator and which consists of the synchronous machine and its peripheral controllers such as the exciter and the governor-turbine subsystems. In this work, the exciter, the synchronous machine, the machine dynamics and the governor are modeled in detail while a simplified model of the turbine is used.</p> <p> The synchronous machine, the main component of this simulation, solves the discretized Park's machine equations which include flux derivative tenns and tenns pertain

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DEL, GUSTO LUIGI CARMINE. "Linear Rational Insurance Model & Economic Scenario Generator." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/285067.

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Linear Rational Insurance Model Abstract The aim of the first work is to provide a closed pricing formula for insurance contracts in a linear rational framework, which consists in assuming the existence of a linear drift diffusion process and a state price density which is a linear function of it. The main advantage of this process is that we can compute the conditional expectation of polyno- mials function of this diffusion: in fact a polynomial can be see as a linear combination of an enlarged set of variables with a linear drift, this can be proofed by means of the Itô’s formula. This resul

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Matos, Antonio P. "Characterization and application of four-layer semiconductor structures in pulse mode operation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Sep%5FMatos.pdf.

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Thesis (M.S. in Physics)--Naval Postgraduate School, September 2006.<br>Thesis Advisor(s): Gamani Karunasiri, James H. Luscombe. "September 2006." Includes bibliographical references (p. 69-70). Also available in print.

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Croci, Lila. "Gestion de l'énergie dans un système multi-sources photovoltaïque et éolien avec stockage hybride batteries/supercondensateurs." Phd thesis, Université de Poitiers, 2013. http://tel.archives-ouvertes.fr/tel-00943296.

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Ce mémoire présente le travail de recherche effectué pour la conception d'une stratégie de commande originale, destinée aux systèmes de puissance hybrides en sites isolés. Le système considéré, voué à l'alimentation électrique d'une habitation, comprend deux sources, un groupe de panneaux photovoltaïques et une petite éolienne, et deux types de stockage, un banc de batteries lithium-ion et un de supercondensateurs. Face au problème de gestion de l'énergie dans un système hybride, et aux enjeux de maximisation de sa puissance produite, nous proposons de développer une stratégie de commande basé

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Gutierrez, Lopez Armando, and Viela Ignacio Manuel Mulas. "Automated Telecommunication Software Testing : An automated model generator for Model-Based Testing." Thesis, KTH, Kommunikationssystem, CoS, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93852.

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In Model-Based Testing (MBT) the main goal is to test a system by designing models which describe the functionality of the system to test. Subsequently, test cases are obtained from the model, and these test cases can be executed automatically. Experience has shown that the learning curve for learning MBT can be steep - especially for people who do not have previous programming experience. This is because the language used to design models uses programming language concepts. In this thesis we describe a tool which automatically generates models, given an initial set of requirements. The advant

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Barger, Lynne F. "The model generator: a tool for simulation model definition, specification, and documentation." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/74519.

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The Model Generator, one of the automated tools of the Model Development Environment, supports the process of discrete event simulation model development by guiding a modeler through model definition and model specification. This research focuses on the specification process within the Model Generator. A design is proposed and requirements are established for extending an existing generator prototype to incorporate model specification. The specification is obtained interactively by engaging a modeler in a series of dialogues. The modeler's responses are stored in a database that is structure

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Zhao, Zhuang. "Pulse generation from mode locked VECSELS AT 1.55 um." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112204/document.

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Dans un premier temps, nous avons optimisé des structures laser VECSEL dans le but de maximiser la puissance émise par une gestion thermique adéquate. Les structures conçues et fabriquées contiennent une zone active à base d’InP pour l’émission à 1.55 µm. Un miroir hybride métal- semiconducteur à base d’un miroir de Bragg GaAs/AlAs est intégré à la zone active. La structure semiconductrice est intégrée avec différents substrats hôtes de bonne conductivité thermique sur la base de simulations numériques, et les performances des dispositifs fabriqués sont évaluées expérimentalement sous pompage

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Alsumiri, Mohammed. "Sliding mode control of renewable energy generation systems." Thesis, University of Liverpool, 2015. http://livrepository.liverpool.ac.uk/2014521/.

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As a result of decades of research and innovation in the renewable energy industry, advanced technologies have been developed for both wind and solar energy conversion systems. However, there are still some aspects of the systems that need to be enhanced to enable maximum and cost effective energy conversion. Wind is emerging as an alternative source for electrical power generation. Small-scale wind power generation system applications are becoming widespread because of rising fuel prices and the demand for reducing carbon emission. For such applications, vertical axis wind turbines (VAWT) app

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Schmidt, Benita. "Detection and Characterisation of Nanoparticles using Inductively Coupled Plasma Mass Spectrometry." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20162.

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In dieser Doktorarbeit wurde eine analytische Methode zur Charakterisierung metallischer Nanopartikel (NPs) entwickelt und die Methode bei der Untersuchung natürlicher Proben angewendet. Mit einem analytisches System bestehend aus einem Mikrotropfengenerator (microdroplet generator, MDG) zusammen mit einem pneumatischen Zerstäuber und einem induktiv gekoppeltem Plasma-Massenspektrometer (ICP-MS) konnte eine quantitative und qualitative Charakterisierung von NPs durchgeführt werden. Der MDG wurde verwendet um die Kalibrierungsfunktion für die massenspektrometrische Quantifizierung der Metalle

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Fisher, Paul D. "Computer model of the performance of a thermoacoustic generator." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA237680.

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Thesis (M.S. in Physics)--Naval Postgraduate School, June 1990.<br>Thesis Advisor(s): Atchley, A.A. Second Reader: Hofler, T.J. "June 1990." Description based on signature page. DTIC Identifiers: Thermoacoustics, sound generators. Author(s) subject terms: Thermoacoustics. Includes bibliographical references (p. 51). Also available in print.

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Luque, Carolina. "Model-based pre-distortion for Signal Generators." Thesis, University of Gävle, Department of Technology and Built Environment, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-231.

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<p>Spectrally pure signals are an indispensable requirement when the Signal Generator (SG) is to be used as part of a test bed. However, even sophisticated equipment may not comply with the needs imposed by certain applications. This work approaches the problem by using Digital Pre-Distortion (DPD) based on a polynomial memory-less model obtained for the SG.</p><p>Using the SG in arbitrary mode (ARB) an input signal is computer-generated and reproduced by the SG. Measurement accuracy is ensured using coherence sampling and grid matching to the Signal Analyzer (SA). Finally, careful time alignm

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Hanning, Jonathan. "Influence of damping winding, controllersettings and exciter on the damping of rotorangle oscillations in a hydroelectric generator : The testing of a mathematical modell." Thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-146696.

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This thesis has been performed in the university context for Master thesis 30 credits,which is a compulsory exercise in order to gain a degree in electrical engineering. The thesis main objectives were to investigate how the damping and the stiffness of ahydroelectric generator changed depending on different parameter values, and to testa new mathematical model to calculate the damping and stiffness constants Kd and Ks.The work has been performed at the request of VG Power, but has been performedat the division for electricity at Uppsala University. The reason for undertaking thisthesis was to

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Ozharar, Sarper. "Stable optical frequency comb generation and applications in arbitrary waveform generation, signal processing and optical data mining." Orlando, Fla. : University of Central Florida, 2008. http://purl.fcla.edu/fcla/etd/CFE0002388.

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Haloua, Abderrahmane. "Étude d’un protocole de communication asynchrone faible consommation à lien radio impulsionnel ultra-large bande : implémentation sur silicium des fonctions RF critiques." Electronic Thesis or Diss., Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0255.

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Au cours des dernières années, différents travaux de recherche ont été consacrés à l’étude et au développement des solutions de type réseau de capteurs sans fil. Ces travaux sont une réponse à l’augmentation du nombre d’objets connectés dans le monde avec le développement de l’internet des objets. La consommation d’énergie dans les réseaux de capteurs représente un des domaines les plus étudiés. Les communications dans les réseaux de capteurs représentent une part importante de leur consommation. Afin de réduire la consommation des communications dans les réseaux de capteurs, différents niveau

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Castiñeiras, Carina. "Modeling and characterization of mode coupling in next generation of few mode optical fibers." Thesis, Lille, 2018. http://www.theses.fr/2018LIL1R030.

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Les fibres optiques légèrement multimodes (FMF) sont une classe de fibres optiques multimodes. Dans le domaine de la télécommunication, chaque mode d’une FMF peut être utilisé comme un canal indépendant de transmission, ainsi, des débits bien supérieurs aux fibres optiques conventionnelles pourrait être atteint. Cependant, l'un des problèmes à l'utilisation de ce type de fibre est le couplage de mode et la dispersion de mode qui dégradent les performances de transmission. Cette thèse entre dans le cadre de l’étude du couplage de mode de différents profils de fibre. Ce travail se décompose en d

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Castiñeiras, Carina. "Modeling and characterization of mode coupling in next generation of few mode optical fibers." Electronic Thesis or Diss., Université de Lille (2018-2021), 2018. http://www.theses.fr/2018LILUR030.

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Les fibres optiques légèrement multimodes (FMF) sont une classe de fibres optiques multimodes. Dans le domaine de la télécommunication, chaque mode d’une FMF peut être utilisé comme un canal indépendant de transmission, ainsi, des débits bien supérieurs aux fibres optiques conventionnelles pourrait être atteint. Cependant, l'un des problèmes à l'utilisation de ce type de fibre est le couplage de mode et la dispersion de mode qui dégradent les performances de transmission. Cette thèse entre dans le cadre de l’étude du couplage de mode de différents profils de fibre. Ce travail se décompose en d

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