Дисертації з теми "Systèmes à multi-sources"
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Doggaz, Narjes. "L'incertitude et l'imprécision dans les systèmes à multi-sources de connaissances : le système Atomic." Nancy 1, 1992. http://www.theses.fr/1992NAN10179.
Повний текст джерелаPayman, Alireza. "Contribution à la gestion d'énergie dans les systèmes hybrides multi-sources multi-charges." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL038N/document.
Повний текст джерелаThis work deals with a nonlinear control strategy of an electrical hybrid system which is composed of a fuel cell as the main source and a supercapacitor bank as the auxiliary source. Any algorithm commutation is not used in the proposed control strategy whereas the system works in different operating modes. After a review of various structures of the electrical hybrid systems and different control methods of these systems, two new approaches are developed. The first one is flatness-based method to ensure the energy management in the proposed hybrid systems and generally in a multi source / multi loads system. The proposed strategy is based on generation of a reduced-order model of the system. The energy management is carried out through the reference trajectories of the stored electrostatic energy of the system. The effect of the proposed control method on design of the system components (inductors and capacitors) is explained. In the second approach, the total energy stored in the choppers is taken into account to control the load converters of a multi-source/multi load system by use of the input/output linearization method. A nonlinear observer is proposed to estimate the variation of voltage-power output characteristic of the fuel cell which leads to an optimal performance of the hybrid system. The simulation and experimental results prove validity of the proposed control strategy
Ibrahim, Elkhatib. "Commande intelligente tolérante aux fautes des systèmes multi-sources d'énergie." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10086/document.
Повний текст джерелаThis thesis presents stability analysis for a class of uncertain nonlinear systems and a method for designing robust fuzzy controllers to stabilize the multivariable multi-sources of energy systems subject to parameter uncertainties, sensor faults, actuator faults/unknown inputs and wind disturbance. First, the Takagi–Segno (TS) fuzzy model is adopted for fuzzy modeling of the uncertain nonlinear system. Next, we propose a Fuzzy Dedicated Observers (FDOS) method and a Fuzzy Proportional-Integral Estimation Observer (FPIEO) with a Fuzzy Fault Tolerant Control (FFTC) algorithm for TS systems. FDOS provide residuals for detection and isolation of sensor faults which can affect a TS model and FPIEO estimate the actuator faults which fed to the FDOS to reconfigure the controller. The concept of the Parallel Distributed Compensation (PDC) is employed to design FFTC and observers from the TS fuzzy models. Sufficient conditions are derived for robust stabilization, in the sense of Taylor series stability and Lyapunov method, for the TS fuzzy system with parametric uncertainties, sensor faults, actuator faults/unknown inputs and wind disturbance. The sufficient conditions are formulated in the format of Linear Matrix Inequalities (LMIs) and Linear Matrix Equalities (LMEs). Important issues for the stability analysis and design are remarked. The effectiveness of the proposed controller design methodology is finally demonstrated through a Hybrid Wind-Diesel System (HWDS), Wind Energy System (WES) with Doubly Fed Induction Generators (DFIG) and Photovoltaic (PV) generation system to illustrate the effectiveness of the proposed method
Mouhammad, Al Anfaf Mohamed Mladjao. "Contribution à la modélisation et à l’optimisation de systèmes énergétiques multi-sources et multi-charges." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0127/document.
Повний текст джерелаGlobal energy demand continues to rise. The fossil fuel prices are unstable and uncertain. The liberalization of the electricity market and environmental awareness of the global leaders are levers for the development of renewable energy. These are growing at a rapid pace in the world. They reached technical maturity that enables them to become an important segment of the energy industry. Their integration in the energy mix poses new challenges compared to traditional energy sources. With an underexploited potential, photovoltaic and wind energy are advantageous economically and environmentally. However, their intermittent decreases their energy efficiency when operated. The use of hybrid systems (multi-sources) combining these renewable energy sources, the national distribution network (historical grid) and conventional storage systems, is generally regarded by all as a future solution, both efficient and reliable. Thereby, it is necessary to rethink the structure of electrical networks and energy markets, and changes in network management methods. In this context, the foreseen intake with this thesis is to contribute to the modeling and optimization of multi- load multi- source systems to power both remote sites “closeness energy” (campus, village) and large sites such as French regions through their interconnection "pooling ". Different scenarios of management and different configurations of the systems are modeled, tested and compared to analyze the effectiveness and robustness of each case. A complete technical and economic analysis is performed in order to study the feasibility of each system. To demonstrate the validation of these models, studies were performed on a French university campus, a Micro-grid in Mali and three French regions. These latter have been applied to an original interconnection model based on Petri nets for decision support in terms of network configuration and control of energy flows exchanged between interconnected producers/consumers territories without storage
Bargain, Mike. "Développement d'une méthodologie de traitement et de fusion d'informations multi-sources et multi-outils." Université de Marne-la-Vallée, 1997. http://www.theses.fr/1997MARN0015.
Повний текст джерелаCourdouan, Elie. "Développement d'un module BMS multi-sources harvesting." Electronic Thesis or Diss., Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0633.
Повний текст джерелаWith the development of mobile applications, such as telecoms, IoT and home automation, embedded systems have shown an exponential growth over the past years. The main characteristic of these newly build systems is to combine high processing capabilities and extended operational autonomy. Unfortunately, these parameters are fundamentally opposed and hardware designer facing this issue by limiting processing capability to ensure enough autonomy. To solve this autonomy problem, newly architectures choose to implement an energy harvesting stage with one or more sources. As part of this industrial thesis, the study has been carried out on the design of an optimized energy harvesting module using one or more sources. Two directions were found to increase the quantity of harvested energy: - Interfacing multiple harvester from complementary source in an industrialized architecture - Optimization of produced energy from each source by using next-generation algorithms of Maximum Power Point Tracking. These algorithms are optimized thanks to technical advances made in the field of Deep Learning and the availability of more efficient low power microcontroller. The final goal of this study is to deploy a low cost wide area network of sensors with enhanced or infinite autonomy
Mboup, Alioune Badara. "Commande d'un système de production d'énergie électrique multi-sources : application aux sites isolés." Le Havre, 2011. http://www.theses.fr/2011LEHA0022.
Повний текст джерелаThis thesis concerning integration and control of renewable energy sources in systems of power generation and energy storage. The hybrid system studied consists of a wind generator, a diesel generator, photovoltaic panels and lead acid batteries for supplying continuous loads. All these sources are interfaced with the power electronics in aims to maintain the DC bus voltage to a reference value for supplying correctly the load demand. In this study we have done the model of the multisource system by using a hybrid nonlinear state space representation that uses discrete and continuous variables. Discrete variables are the contacts used to connect power converters on the DC bus. Continuous variables represent voltage and current to satisfy the load. We then developed a hierarchical control strategy which is used to regulate the voltage of the DC bus, to adjust the power rate extracted from the sources and to connect or disconnect the converter associated with sources according to criteria of energy availability. The control laws of power converters and the energy transfer management methods are developed from a study of the technological characteristics of different components of the system on one hand and information of the duty cycle value on the other. The duty cycle is a correlation measure between the source and the load. Its variations depend on the power extracted of the source. We showed that it was a priority decision variable in optimization energy of multi-source systems and operations can reduce the necessary instrumentation to control the installation. Following the methodological work, we are realized the power electronic converters and the acquiring system (and measuring). We are also validated our approach with experimental results that show the effectiveness of the strategy proposed for the energy management and the control of power converters
Fauvel, Clément. "Approche modulaire de l'optimisation des flux de puissance multi-sources et multi-clients, à visée temps réel." Thesis, Nantes, Ecole des Mines, 2015. http://www.theses.fr/2015EMNA0181/document.
Повний текст джерелаThe energy systems describe a class of systems whose from structural and functional characteristics raise the problem of the energy distribution to satisfy the services in real time. The solution of this multi-objectives problem, namely energetic, is the energy management strategy, whose design is still an open problem. The solutions studied in this thesis are incorporated in the framework of an industrial partnership and particularly in those systemic design approaches. The first contribution is a methodology of modular and generic design of the energy management strategy, for the multi- clients and multi-sources systems. It defines two types of functional elements: the clients and the sources, interacting through a node, which is the carrier of thestrategy. The second contribution deals with thegeneric formulation of the strategy and itssimplification by means of decomposition in accordance with two problems: the hybridization of sources and the competition of clients, which a real ready known in the literature. The third contribution is partial to the selection of innovative or existing algorithms, which are compatible with a real-time target to execute the strategy. Finally, the energy strategy of a refrigerated truck with a hybrid energy architecture is designed by the proposed modular approach, and the algorithm feasibility is validated by the simulation
Bellache, Kosseila. "Caractérisation Multi-physique des éléments de stockage électrochimique et électrostatique dédiés aux systèmes Multi sources : Approche systémique pour la gestion dynamique d'énergie électrique." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMLH21.
Повний текст джерелаThis thesis work is a continuation of the research activities of the GREAH laboratory on the issues of the management of electrical energy and improving the energy quality of production systems for renewable energy. Indeed, the coupling of several different nature sources entails the problems of dimension, quality of energy and the lifetime of the interconnected elements. The scientific approach is based on the characterization of the evolution of the resistances and capacitances of the batteries/supercapacitors cells according to the electrical and thermal constraints, followed by the modeling of accelerated cells aging. In this thesis, we propose improvements to the dynamic response of an electric propulsion fluvial boat by using the hybrid system of lithium-batteries and supercapacitors. We also propose an electrothermal approach for the multi-physical characterization and modeling of the batteries and supercapacitors aging, using combined constraints of the temperature and frequency of the DC current ripples. The experimental data has been collected to establish models of batteries and supercapacitors dedicated to multi-source systems including renewable energy sources (wind and tidal turbines). The results of the developed models shown high accuracy compared with experimental results. These models illustrated a good description of the aging phenomenon of batteries/ supercapacitors due to charging/discharging operations with a fluctuating continuous current combined with a variable temperature
Sall, Ousmane. "Contribution à la modélisation de données multi-sources de type DATAWEB basé sur XML." Littoral, 2010. http://www.theses.fr/2010DUNK0284.
Повний текст джерелаEnvironmental data in the Senegal River Valley have been collected for many years from the activities of the various experts and organisms involved therein. These spatio-temporal data display certain specific semantic and structural features depending on the owners. Various systems have been used for the collection and storage of the data, thus, conferring them a structural dimension of heterogeneity, to which a semantic dimension related to them description has been attached, with a proper vocabulary controlled within every organism or expert. In this context, we perform an integration in three phases. First, a structural integration phase, based on the use of XML documents warehouses (called dataweb), allows us to create a warehouse for each agency involved in the project. A second step is to make the integration of these XML documents warehouses by associating a knowledge-base to each warehouse thus constituting semantic dataweb. That is done by an automatic building of OWL ontology starting from XML dataweb and by re-use of the Agricultural Ontology Service. A third mediation phase permits to query in a uniform manner the different semantic dataweb via a web application
Li, Peng. "Formalisme pour la supervision des systèmes hybrides multi-sources de générateurs d'énergie répartie : application à la gestion d'un micro réseau." Phd thesis, Ecole Centrale de Lille, 2009. http://tel.archives-ouvertes.fr/tel-00577099.
Повний текст джерелаLi, Peng. "Formalisme pour la supervision des systèmes hybrides multi-sources de générateurs d’énergie répartie : application à la gestion d’un micro réseau." Thesis, Ecole centrale de Lille, 2009. http://www.theses.fr/2009ECLI0006/document.
Повний текст джерелаA microgrid is a promising future network architecture which is coupling the various generators and consumers in a distribution network. This hybrid multi-source system is composed of at least one conventional generation unit and possibly a storage unit and/or a production unit based on renewable energies. Using this structure allows an immediate minimization of the losses by the energy transport, a greater reliability of power delivery and an ability to provide a high power quality energy. In this paper, we study a microgrid based on the use of a micro gas turbine, a photovoltaic array and supercapacitors. All these sources are coupled to the microgrid by power electronic converters and are interconnected to a microgrid central controller. Some local controllers and the microgrid central controller are used for the studied microgrid to achieve its operation optimization. Therefore, the first part of this thesis is devoted to establish a formalism method for a systematic design of local controllers. The second part of this thesis is devoted to the management of all these production and storage units, in order to optimize the microgrid operating. Simulation and testing results validate our design of the microgrid controllers
Ait, Ladel Ayyoub. "Commande tolérante aux défauts des systèmes à multimodèles : application à des systèmes à multi-source d'énergie." Electronic Thesis or Diss., Aix-Marseille, 2022. http://theses.univ-amu.fr.lama.univ-amu.fr/220330_AITLADEL_882kmyqu655hkbca383zrkcz402ihwf_TH.pdf.
Повний текст джерелаThis thesis deals with the fault detection/estimation and fault-tolerant control challenges through integrated design. The aim is to design control strategies able to maintain robust and acceptable performance even in the presence of faults. The considered systems are dynamic in nature and are multi-model. The approaches proposed in this thesis consist in formalizing the integrated design of the detection/estimation and fault-tolerant control units in the form of linear matrix inequalities to overcome the difficulty posed by the observer/controller coupling. These approaches provide the ability to consider the different interactions between the system, the detection/estimation unit, and the control unit. Therefore, ensuring a global stability analysis of the closed-loop system and robust performances in terms of detection/estimation, control, and fault compensation. The thesis is mainly composed of three parts. In the first part, results on the control in the presence of sensor or actuator faults are established for switched linear systems. In the second part, extensions to switched nonlinear systems with sensor and actuator faults are proposed. Finally, the third part consists of a complete study of a renewable energy system. It is a multi-source/multi-load system designed to meet multiple demands and is subject to the intermittency of renewable energies
Broue, Adrien. "Analyse multi physique des sources de défiabilisation du microcontact électrique à destination des interrupteurs MEMS." Toulouse 3, 2012. http://thesesups.ups-tlse.fr/1985/.
Повний текст джерелаResearch on electrical contact characterization for microelectromechanical system (MEMS) switches has been driven by the necessity to reach a high-reliability level for micro-switch applications. One of the main failure observed when aging devices with gold contacts is the increase of the electrical contact resistance. It is related to degradations of the surface topography caused by heating, adhesion forces, etc. In this paper we investigate the performance of gold and an alternative material, ruthenium, using a methodology dedicated to MEMS contacts: a nanoindenter is used to actuate mechanically the structure, providing an accurate control of the force applied and of the resulting displacement. The electrical resistance is measured by cross rods technique "four wires" to avoid any measurement of the wire access resistances. A high resolution source meter with programmed voltage compliance and micro voltmeter is used. The test vehicles are surface micromachined on silicon substrate. Dedicated tests and modelling are presented with 5 microm² square bumps under mechanical load (until 250microN) and electrical current (1mA-100mA). Analyses of contact force dependence, temperature dependence, adhesion forces, evolution of the contact area, creep behavior and topological modifications are discussed. Regarding the results, better understanding of micro-contact behavior related to the impact of current at low- to medium-power levels is obtained. Contact heating until the softening temperature is found to be the main factor leading to shift of mechanical properties of contact materials and topological modifications. Finally an enhanced stability of the bimetallic contact was demonstrated considering sensitivity to power increase
Poline, Marie. "Contribution aux méthodes de conception et de gestion des systèmes énergétiques multi-sources par optimisation systémique : application aux trains hybrides électrique autonomes." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT099/document.
Повний текст джерелаIn France, there are two traction modes for railway: the diesel and electric traction. Each mode has its own issues. For diesel, the increasing control of the greenhouse gas emissions imposes to evolve this type of train to a less polluting solution. For electric traction, the energy consumption creates a voltage drop which can cause a traffic slowdown, which will limit the traffic development. The studied solution by SNCF is the hybridization of the train (adding storage system).Thus, these works have the objective to build a method to do the pre-sizing of storage systems embedded in trains. Moreover, to take into account the mutual influence of the sizing and the energy management, this last one is included in the sizing model. An optimization algorithm solves the global model.The method has been developed for the two traction modes (diesel and electric) and the optimization has been made with SQP algorithm (Sequential Quadratic Programming)
Abdou, Tankari Mahamadou. "Système multi-sources de production d'énergie électrique : méthode de dimensionnement d'un système hybride et mise en œuvre expérimentale de l'optimisation de la gestion d'énergie." Le Havre, 2010. http://www.theses.fr/2010LEHA0011.
Повний текст джерелаThis work is funded by the "Region Haute Normandie", the University of Le Havre and the GREAH laboratory, within the scope of research activities developed in the decades by GREAH laboratory on integration of renewable energy sources in systems of power generation and energy storage. The hybrid system considered consists of a wind generator, a diesel generator, photovoltaic panels, ultracapacitors and lead acid batteries for supplying the autonomous site (consumers). The wind power generator and photovoltaic panels are regulated at their maximum power to increase the penetration ratio of the renewable energy. The wind power fluctuations are dispatched between ultracapacitors and batteries according to the dynamics of each source. The using of ultracapacitors reduces the number of the battery cycles of charges and discharges, thereby improving its life and reduces its size. Because of the battery is the weak link of the system, we introduce a method to estimate its lifetime. The diesel generator is interfaced with the power electronics in aims to regulate the DC-bus voltage while compensating the difference between the load demand and the average value of the wind power. Fluctuations induced by the wind power generator are being absorbed by the storage devices. The diesel generator compensates only low frequencies energy compatible with its dynamics. This method can improve the performance of the diesel engine and can reduce the fuel consumption. The control laws of power converters and the energy transfer management methods are developed from a study of the technological characteristics of different components of the system. The modelling and sizing of the physical system is conducted in aim to perform the experimental implementation. The power electronic converters and the acquiring system (and measuring) are realised in the laboratory. During the experiments, different sources are inserted into the system in an evolutionary way to highlight the constraints and interactions introduced by each interconnected source. This also allows us to develop solutions tailored to each situation and to continue the experiments efficiently. Indeed, the insertion of a new source generally disrupts the stability of the system and often requires a readjustment of the parameters of the overall system regulation. Analyses of experimental results show the effectiveness of the strategy proposed for the energy management and the control of power converters
Nouhou, Bako Zeïnabou. "Contribution à la mise en œuvre d'une méthodologie de conception d'un micro-réseau multi-sources multi-villages : cas de la région du Sahel." Thesis, Paris Est, 2018. http://www.theses.fr/2018PESC1019/document.
Повний текст джерелаEnvironmental issues (environmental conservation and the fight against pollution), economic (energy demand increasingly high for socio-economic development) and political (democratic access to energy) current global impose a change in energy consumption-related behavior in order not to compromise the quality of life of future generations. To this end, the use of renewable energies, including solar PV, is as one of the most promising solutions. However, because of their intermittent, it may be necessary to use in energy storage devices. These are generally used in the case of isolated sites of the electricity grid but more and more research work focuses on the integration of storage units in photovoltaic systems connected to electricity networks ( "smart"). The implementation of the storage means and to optimize production and improve the profitability of electricity while enabling smooth network calls in peak powers.For hard to reach areas, the electricity storage ensures energy independence by adjusting production to consumer needs and vice versa. This causes a continuous process of charging and discharging of the storage units that can profoundly change the physicochemical properties and electrical storage systems with consequent reduction in operating life of the installation. Generally, the technical characteristics of storage units are determined by manufacturers under ideal operating conditions, including current and constant temperature. Also, when the operation takes place in austere weather conditions, such as those of the Sahel, the real life of these systems can be very different predictions based on the manufacturer. These countries, large solar fields, are characterized by arid soils and large stretches of desert very hot and the people he makes are scattered in small hamlets, making stand-alone photovoltaic systems the best candidates to meet energy needs. For proper design and effective implementation, it is important to know the behavior of the system components in the climatic conditions of the target sites. It must indeed know the impact of these on the life and characteristics of components, to determine the possible need for conditioning devices and consider the scientific and technical studies of their implementation. The proposed research aim to answer these many questions based on an experimental platform and models, and produce terms of IT tools for decision support
Défossez, Gautier. "Le système d'information multi-sources du Registre général des cancers de Poitou-Charentes. Conception, développement et applications à l'ère des données massives en santé." Thesis, Poitiers, 2021. http://theses.univ-poitiers.fr/64594/2021-Defossez-Gautier-These.
Повний текст джерелаPopulation-based cancer registries (PBCRs) are the best international option tool to provide a comprehensive (unbiased) picture of the weight, incidence and severity of cancer in the general population. Their work in classifying and coding diagnoses according to international rules gives to the final data a specific quality and comparability in time and space, thus building a decisive knowledge database for describing the evolution of cancers and their management in an uncontrolled environment. Cancer registration is based on a thorough investigative process, for which the complexity is largely related to the ability to access all the relevant data concerning the same individual and to gather them efficiently. Created in 2007, the General Cancer Registry of Poitou-Charentes (RGCPC) is a recent generation of cancer registry, started at a conducive time to devote a reflection about how to optimize the registration process. Driven by the computerization of medical data and the increasing interoperability of information systems, the RGCPC has experimented over 10 years a multi-source information system combining innovative methods of information processing and representation, based on the reuse of standardized data usually produced for other purposes.In a first section, this work presents the founding principles and the implementation of a system capable of gathering large amounts of data, highly qualified and structured, with semantic alignment to subscribe to algorithmic approaches. Data are collected on multiannual basis from 110 partners representing seven data sources (clinical, biological and medical administrative data). Two algorithms assist the cancer registrar by dematerializing the manual tasks usually carried out prior to tumor registration. A first algorithm generate automatically the tumors and its various components (publication), and a second algorithm represent the care pathway of each individual as an ordered sequence of time-stamped events that can be access within a secure interface (publication). Supervised machine learning techniques are experimented to get around the possible lack of codification of pathology reports (publication).The second section focuses on the wide field of research and evaluation achieved through the availability of this integrated information system. Data linkage with other datasets were tested, within the framework of regulatory authorizations, to enhance the contextualization and knowledge of care pathways, and thus to support the strategic role of PBCRs for real-life evaluation of care practices and health services research (proof of concept): screening, molecular diagnosis, cancer treatment, pharmacoepidemiology (four main publications). Data from the RGCPC were linked with those from the REIN registry (chronic end-stage renal failure) as a use case for experimenting a prototype platform dedicated to the collaborative sharing of massive health data (publication).The last section of this work proposes an open discussion on the relevance of the proposed solutions to the requirements of quality, cost and transferability, and then sets out the prospects and expected benefits in the field of surveillance, evaluation and research in the era of big data
David, Mélodie. "Dynamique fluviale de la Garonne à l'anthropocène : trajectoire d'évolution du tronçon fluvial compris entre les confluences de l'Ariège et du Tarn (Garonne toulousaine, 90 km)." Thesis, Toulouse 2, 2016. http://www.theses.fr/2016TOU20034/document.
Повний текст джерелаSince the end of the nineteenth century, significant morphological channel changes have been observed along European rivers. The major processes involved, channel incision and narrowing, appear as the result of increasing human activities and the transition from the Little Ice Age (LIA) to Global Warming (GW). On the Garonne River (southwestern France) this phenomenon has been observed and described since the 1960th between the Ariège and Tarn tributaries (The Toulouse Garonne, 90 km). However, very few studies have focused on a longer evolutionary period. In this study, we propose to analyze the evolutionary trajectory of the Toulouse Garonne on a plurisecular timescale. The aim of this study is to assess: 1) the evolutionary tendency before the 1950th; 2) the impact of the LIA to GW transition and former human disturbances on fluvial dynamics; 3) the hydro-sedimentary pattern of the Garonne River before the twentieth century; and 4) the presence of spatial discontinuities within the reach. The analysis is based on two types of data, which are complementary in terms of chronology and spatial cover: historical maps and field data collected on 11 palaeochannels. The results show: 1) a meandering channel in the late LIA (second half of the nineteenth century), with spatial discontinuities along the Toulouse Garonne; 2) a morphological adjustment since the late nineteenth / early twentieth centuries in the upstream and middle reaches, in response to several controls and; 3) a later adjustment in the downstream reach, in response to bank protection. Furthermore, this study provides new data on morphological channel features over the Medieval Climatic Optimum (MCO, 900-1300) and reveals that only a very few data allows to assess the channel behavior over the LIA
Toussaint, Ben-Manson. "Apprentissage automatique à partir de traces multi-sources hétérogènes pour la modélisation de connaissances perceptivo-gestuelles." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAM063/document.
Повний текст джерелаPerceptual-gestural knowledge is multimodal : they combine theoretical and perceptual and gestural knowledge. It is difficult to capture in Intelligent Tutoring Systems. In fact, its capture in such systems involves the use of multiple devices or sensors covering all the modalities of underlying interactions. The "traces" of these interactions -also referred to as "activity traces"- are the raw material for the production of key tutoring services that consider their multimodal nature. Methods for "learning analytics" and production of "tutoring services" that favor one or another facet over others, are incomplete. However, the use of diverse devices generates heterogeneous activity traces. Those latter are hard to model and treat.My doctoral project addresses the challenge related to the production of tutoring services that are congruent to this type of knowledge. I am specifically interested to this type of knowledge in the context of "ill-defined domains". My research case study is the Intelligent Tutoring System TELEOS, a simulation platform dedicated to percutaneous orthopedic surgery.The contributions of this thesis are threefold : (1) the formalization of perceptual-gestural interactions sequences; (2) the implementation of tools capable of reifying the proposed conceptual model; (3) the conception and implementation of algorithmic tools fostering the analysis of these sequences from a didactic point of view
Tabanjat, Abdulkader. "Modélisation, commande et supervision d'un système multi-sources connecté au réseau avec stockage tampon de l'énergie électrique via le vecteur hydrogène." Thesis, Belfort-Montbéliard, 2015. http://www.theses.fr/2015BELF0266/document.
Повний текст джерелаThe limited reserves of fossil fuel and the pollution gases produced pave the way to promising alternativeRenewable Energy Sources (RESs) such as Solar Energy Sources (SESs) and Wind Energy Sources (WESs).SESs and WESs are freely available and environmentally friendly. However, RESs are intermittent in nature.Therefore, the smoothing of power fluctuations by storing the energy during periods of oversupply and restore it tothe grid when demand becomes necessary. Accordingly, Energy Storage Systems (ESSs) can be appropriatelyused for this purpose.Using several energy sources for constructing HPSs alongside with ESS will require an energy managementstrategy to achieve minimum HPS cost and optimal balance between energy generation and energy consumption.This energy management method is a mechanism to achieve an ideal energy production and to conveniently satisfythe load demand at relatively high efficiency.In this thesis, a Hybrid Power System (HPS) including Renewable Energy Sources (RESs) such as main sourcescombined with Gas Micro-Turbine (GMT) and hydrogen storage system such as Back-up Sources (BKUSs) hasbeen presented. The aim of this hybridization is to build a reliable system, which is able to supply the load andhaving the ability to store the excess energy in hydrogen form and reuse it later when demanded. Consequently, thestored energy at the end of each cycle will be zero and a minimum generated power cost is achieved. In addition,partial shading problem of Photovoltaic (PV) panels is comprehensively studied and a new solution based on simpleswitches and Fuzzy Logic Control (FLC) integrated into dSPACE electronic card is created. Consequently, a realtime PV panels reconfiguration and disconnecting shaded ones is performed and minimum power losses isachieved. Then, the PV panels are connected to a Proton Exchange Membrane Electrolyser (PEM ELS). Theemitted temperature by the PV panels is transferred to the endothermic element PEM ELS. Consequently, anefficiency enhancement of the hybrid system PVPEM ELS is realized
Chaty, Sylvain. "Étude multi-longueur d'onde du microquasar GRS 1915+105 et de sources binaires de haute énergie de la Galaxie." Phd thesis, Université Paris Sud - Paris XI, 1998. http://tel.archives-ouvertes.fr/tel-00003559.
Повний текст джерелаJeveme, Panta Franck. "Modélisation des métadonnées multi sources et hétérogènes pour le filtrage négatif et l'interrogation intelligente de grands volumes de données : application à la vidéosurveillance." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30098.
Повний текст джерелаDue to the massive and progressive deployment of video surveillance systems in major cities, a posteriori analysis of videos coming from these systems is facing many problems, including the following: (i) interoperability, due to the different data (video) formats and camera specifications associated to each system; (ii) time-consuming nature of analysis due to the huge amount of data and metadata generated; and (iii) difficulty to interpret videos which are sometimes incomplete. To address these issues, the need to propose a common format to exchange video surveillance data and metadata, to make video content filtering and querying more efficient, and to facilitate the interpretation of content using external (contextual) information is an unavoidable concern. Therefore, this thesis focuses on heterogeneous and multi-source metadata modeling in order to propose negative filtering and intelligent data querying, which are applicable to video surveillance systems in particular and adaptable to systems dealing with large volumes of data in general. In the applicative context of this thesis, the goal is to provide human CCTV operators with tools that help them to reduce the large volume of video to be processed or viewed and implicitly reduce search time. We therefore initially propose a so-called "negative" filtering method, which enables the elimination from the mass of available videos those that it is know in advance, based on a set of criteria, that the processing will not lead to any result. The criteria used for the proposed negative filtering approach are based on metadata modeling describing video quality and usability/usefulness. Then, we propose a contextual enrichment process based on metadata from the context, enabling intelligent querying of the videos. The proposed contextual enrichment process is supported by a scalable metadata model that integrates contextual information from a variety of sources, and a multi-level query mechanism with a spatio-temporal reasoning ability that is robust to fuzzy queries. Finally, we propose a generic metadata modeling of video surveillance metadata integrating metadata describing the movement and field of view of cameras, metadata from content analysis algorithms, and metadata from contextual information, in order to complete the metadata dictionary of the ISO 22311/IEC 79 standard, which aims to provide a common format to export data extracted from video surveillance systems. The experiments performed using the framework developed in this thesis showed the reliability of our approach in a real case and enabled the validation of our proposals
Jabbour, Noël. "Intégration des systèmes à absorption solaire de petites puissances aux bâtiments - approche multifonction solaire : chauffage, ECS et rafraîchissement." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00708518.
Повний текст джерелаJabbour, Noel. "Intégration des systèmes à absorption solaire de petites puissances aux bâtiments - approche multifonction solaire : chauffage, ECS et rafraîchissement." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0085/document.
Повний текст джерелаThe introduction of new low capacity absorption chillers opens new prospects for the multifunction multisource solar systems (MFSSYS) which exploit the full potential of the solar energy for heating, cooling and production of domestic hot water (DHW) purposes. The solar combisystems (SCS), which preceded the MFSSYS, lacked an adapted procedure for the sizing of their main components: the solar collector and the solar thermal storage tank. From the point of view of the energy and investment cost, a sizing method based on the peak load may fail if the energy source is not guaranteed to be stable. An optimization of the main components by simulation may be then a key solution for an optimal sizing of the MFSSYS. An initial hydraulic schematic is elaborated for the MFSSYS based on information found in the literature about the SCS and the data made available by the chiller manufacture. The modeling of this schematic is complex as redundant simulation and modification were necessary in order to eliminate the potential problems of solution convergence. From this experience, a method of simulation aided design is elaborated. Parametric runs were carried out on the MFSSYS model. They offer needed information for the comparison of the optimization algorithms which are tested later on. The outcome of these parametric runs is a response surface which represents the cost of the MFSSYS as a function of the solar collector surface area and the volume of the solar thermal storage tank. In order to reduce the number of simulations required by a complete parametric runs method, the use of optimization algorithm become a necessity. An optimization algorithm based on the design of experiments (OptDOE) is developed; its performance is compared with the one of a hybrid optimization algorithm in two cases: a reference function of Rosenbrock and the model of the MFSSYS. Compared to the hybrid optimization algorithm, OptDOE has showed good performance. The number of simulations is reduced and the optimized values, found by this method, are close to those of the parametric runs. The main advantage of OptDOE is to describe the behavior of the cost function in the neighborhood of the optimum. This information is valuable especially when the cost function has a valley-like form, which is the case for the systems we studied. In this case, the cost has approximately the same value for a large variation range of the optimized parameters
Ménudier, Cyrille. "Caractérisation des performances d’antennes à réflecteurs paraboliques illuminées par une source focale BIE : application à l’optimisation d’une couverture multimédia multi-faisceaux." Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/b4c850a8-8764-4e21-b926-0dda8386e3df/blobholder:0/2007LIMO4038.pdf.
Повний текст джерелаThe multisources EBG antenna with defect may be an alternative solution to classical focal feed dedicated to high data rate coverage with reflector antennas onboard satellite. By reducing the number of reflectors, the EBG antenna can decrease the satellite weight and cost. However, its performances must be studied before concluding on its interest. This is the aim of this thesis. After presenting a state of the art of multibeam solution for space telecommunications, a software developed to characterize these performances is presented. It has been used to determine the EBG antenna focal feed advantages and drawbacks. Then, a useful design method is presented. As good performances have been obtained, a prototype has been realized to validate all these results
Skonieczny, Charlotte. "Caractérisation multi-proxy de « poussières Sahariennes » déposées à l'actuel sur la marge Ouest africaine : relations avec les régions sources et les systèmes de transport et implications pour l’interprétation des archives sédimentaires en Atlantique Tropical Nord-Est." Thesis, Lille 1, 2011. http://www.theses.fr/2011LIL10171/document.
Повний текст джерелаThe study of the aeolian material in the sedimentary archives of the NEATO contributes to document the paleoclimatic changes in this region. However, the interpretation of these records is complicated by the fact that proxies used in the deep sea sediments to reconstruct the provenance regions and the associated atmospheric transport patterns remain poorly constrained. A study of the aeolian deposits in the present-day climatic context was carried out on the West African margin in order to improve our understanding of the proxies. In this frame, a mineral dust deposits trap was installed in 2006 on the Senegalese coast, providing a unique aeolian deposits time series with a temporal resolution better than a week. The first part of this study consists in a multi-proxy analysis of the aeolian deposits collected from 2006 to 2009 (including grain-size distribution, clay mineralogy and strontium and neodymium isotopic ratios) and the subsequent development of a calibration of these tracers in terms of provenance regions and transport patterns in the present-day climatic context. In a second part, this calibration was (1) tested against sea surface sediments of the NEATO and then (2) used to decipher the aeolian terrigenous signal recorded during the last 26 000 years in the MD03-2705 core (18°05N; 21°09W). This PhD work contributes to document in which ways this initial present-day calibration of the aeolian proxies can contribute to improve our understanding of the terrigenous signal in NEATO
Elsied, Moataz. "Gestion de l’énergie dans un système multi-sources." Caen, 2015. http://www.theses.fr/2015CAEN2038.
Повний текст джерелаIn this thesis, an advanced energy management system (EMS) model for a typical Microgrid (MG) working in grid and islanded operating modes was introduced, discussed and analyzed. MG model under consideration included FC (Fuel cell), MT (Microturbine), WT (Wind), PV (Photovoltaic), and ESS (Energy storage system). The established EMS was formulated as a nonlinear optimization model with different equality and inequality constraints for proper solution based on the AIMMS (Advanced Integrated Multidimensional Modeling Software), GA (Genetic algorithm) and PSO (Particle swarm optimization algorithm). In addition, a comparative study of DC/DC boost converter topologies was investigated in order to select the best topology to be used for interfacing the DERs to the MG’s DC-bus. Moreover, a new auto-tuning online controller design for the proposed converters was designed based on MLIB/MTRACE (MATLAB-dSPACE Real-Time Interface Libraries). Furthermore, a novel method for controlling the PWM carriers of multiple DC/DC converters interfaced to MG’s DC-BUS was introduced. The main purpose of this method was to minimize the DC-BUS ripples based on optimizing the PWM carriers’ phase shift angle. Finally, an experimental testbed was built in our laboratory to test in a real-time the aforementioned EMS
Roy, Anthony. "Gestion optimale d'un système multi-sources pour un site isolé en mer." Thesis, Nantes, 2019. http://www.theses.fr/2019NANT4067.
Повний текст джерелаThe electrical power generation in remote maritime areas must face many technical-economicconstraints related to the load satisfaction and the expensivefuel import for fossil based sources. Thanks to the recent development of marine renewable energies, new perspectives appearfor the electrical power supply of maritime remote areas, so asto decarbonize the electrical power generation. In this thesis, it is proposed to study the sizing and the energy management of anislanded microgrid madeof solar photovoltaic panels, wind turbines, tidal turbines, wave energy converters and batteries. A preliminary analysis of the harnessed resources allows some complementarities and non-complementaritiesto be highlighted. In order to reduce the unmet load demand and the cost of energy, a combined sizing and energy management optimization isproposed. Several demand-side management strategies are hierarchically applied on several loads, in order to avoid the occurrence of critical situations. The obtained results show that demand-side management allows the cost of energy to be reduced by decreasingthe amount of required storage. Also, thediversification of the sources brings many benefits. Finally, the ability of the developed algorithms tocorrectly manage the micro-grid in real time is validated on an experimental test bench
Dai, Ping. "Réjection de perturbation sur un système multi-sources - Application à une propulsion hybride." Thesis, Poitiers, 2015. http://www.theses.fr/2015POIT2251/document.
Повний текст джерелаThis thesis presents the research of energy management in a battery/ultracapacitor hybrid energy storage system with exogenous disturbance in hybrid electric vehicular application. Transient and harmonic persistent disturbances are the two kinds of disturbances considered in this thesis. The former is due to the transient load power demand during acceleration and deceleration, and the latter is introduced from the process of the internal combustion engine torque ripples compensation. Our control objective is to absorb the disturbances causing battery wear via the ultracapacitor, and meanwhile, to maintain a constant DC voltage and to compensate the self-discharge in the ultracapacitor to maintain it operating at the nominal state of charge. The object system is nonlinear due to the multiplicative relation between the input and the state. The traditional approach to solve Francis-Byrnes-Isidori equations cannot be directly applied in this case since the interconnect matrix depends on the control input. Besides, even if this approach is well suited to the rejection of persistent disturbances, it shows the limits for the case of non-persistent disturbances which is also our object. Our contributed control method is realized through a cascade control structure based on the singular perturbation theory. The ultracapacitor current with the fastest motion rate is controlled in the inner fast loop through which we impose the desired dynamic to the system. The reduced system controlled in the outer slow loop is a Hamiltonian system and the controller is designed via interconnection and damping assignment. Simulations and experiments have been carried out to evaluate the control performance. A contrast of the system responses with and without the control algorithm shows that, with the control algorithm, the ultracapacitor effectively absorbs the disturbances; and verifies the effectiveness of the control algorithm
Bargeton, Alexandre. "Fusion multi-sources pour l'interprétation d'un environnement routier." Phd thesis, École Nationale Supérieure des Mines de Paris, 2009. http://pastel.archives-ouvertes.fr/pastel-00005997.
Повний текст джерелаMehdary, Adil. "Développement d'outils de contrôle et d’analyse pour l'optimisation et la gestion de l'énergie pour système multiénergie." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4300.
Повний текст джерелаThe objective of this work is to design and develop tools for monitoring and control systems with variable structures with multiple energy sources (wind, solar, ...). The proposed approach aims to develop appropriate models for the control and management of each part of the system. The different models take into account of the random nature of the production of energy outcome from different available sources, while ensuring optimum overall management of system. The main advantage of this system is the coexistence of resources and storage system in order to secure the supply to the consumer. The thesis deals with three main phases: a phase of modeling and implementation of controls, followed by a simulation phase and a phase of validation and testing. So the model of each subsystem production was developed with consideration of its different characteristics (physical and geometrical), for the control section conventional approaches were applied automatically to ensure the maximization of the production, the stability of the assembly and the functioning of the system. for the part concerning the management and control, conventional approaches in automatic have been applied to ensure the maximization of production, the stability of the overall system and its proper functioning. Once control strategies validated, we have processed in simulations Hardware In the Loop, by implementing strategies to maximize energy on the benchmark in real time, using a DSPACE1104 card, then we assembled the different sources of energy by coupling them through the program of energy management proposed and developed
Attemene, N'guessan Stéphane. "Optimisation temps réel des flux énergétiques au sein d'un système multi-sources multi-charges basé sur les énergies d'origine renouvelable." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD044.
Повний текст джерелаThis work is focused on the real-time optimal control of a stand-alone system consisting of a photovoltaic generator, a PEM fuel cell, an alkaline electrolyzer, a battery and supercapacitor pack for a stationary application. The coupling of these different sources aims to improve performance, the availability of the resulting electrical grid, the supply of electricity over much longer periods, and especially the satisfaction of the load by using each source in a controlled way.First, a thorough study of the feasibility of the system from a technical, energetic, economic and environmental point of view is carried out. As a result, an optimal sizing method is proposed. A sensitivity analysis to evaluate the influence of subsystems cost and the size respectively on the overall energy cost and the equivalent CO2 emitted by the system is also discussed. Then, a model enabling easy scaling of components to achieve the capacity required for the system is developped. The global model of the system is obtained by exploiting the modularity of the formalism used for modeling (the Energetic Macroscopic Representation). Finally, an energy management method based on Energy consumption Minimization Strategy (ECMS) is proposed. A comparative study of the results obtained by the ECMS and those obtained by dynamic programming has enabled the validation of the optimal control strategy developed
Haraoubia, Mohamed Amine. "Modelisation - Optimisation et Supervision de la Gestion d'Energie pour une Installation Multisources." Thesis, Reims, 2015. http://www.theses.fr/2015REIMS022.
Повний текст джерелаThe main objective of this thesis is to size and optimise the production of a small renewable energy installation in a remote isolated area. In order to determine the size of the installation a study of the site capacities and the type of energy to be used must be carried out. A program is set in order to minimize the cost of a hybrid wind and solar energy installation in different sites. The next step is the optimisation of the energy production of each of these systems individually using a fuzzy logic controller to track the maximum power point. This technique is based on the direct approach, mimicking the Perturb & Observe algorithm and overcoming its limitations, such as oscillation around the MPP.The FLC requires fine tuning to maximise its efficiency, therefore it is combined with different optimisation algorithms to set the membership function and modify the rules. Five approaches were tested: type one fuzzy logic was combined first with genetic algorithm, second with particle swarm optimisation, the third approach applied type two fuzzy logic and then combined it with the same optimisation algorithms as previously used, for the final two approaches. The last part of this work introduces a fuzzy logic based supervisor that is adapted for an isolated remote hybrid PV Wind installation, to obtain an optimal functioning of the system according to the changes in atmospheric conditions and energy demand, taking into account the state of charge of the batteries and energy overflow dissipation. Simulations are run for all of the systems to show their efficiency and effectiveness
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.
Повний текст джерелаMissaoui, Badreddine Rim. "Gestion Énergétique optimisée pour un bâtiment intelligent multi-sources multi-charges : différents principes de validations." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00742941.
Повний текст джерелаBadreddine, Rim. "Gestion énergétique optimisée pour un bâtiment intelligent multi-sources multi-charges : différents principes de validations." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00780209.
Повний текст джерелаHsieh, Chenwei. "Processus de création d'un système d'images interactives pour le spectacle vivant : proposition d'une méthode de développement rapide et mise en oeuvre d'une structure d'un système d'interactivité multi-niveaux et multi-sources." Paris 8, 2013. http://octaviana.fr/document/170326594#?c=0&m=0&s=0&cv=0.
Повний текст джерелаIn this thesis, I try to present my process to create an interactive system in a live performance, specifically the dance and musical improvisation made collectively with several artists: performers, composers and creators of the interactive image. The first part is the artistic research about related artists’ works in their live performances. The technical research is the subject of the second part. It consists of my experience about the technology, hardware and software in the development of interactive creations, especially the sensor system of sound and movement. In the end, I propose a structure of system with the multiple-levels and interactive sources. It is a full process to create diversified mapping interactive system. The main goal of the process is to create a faster and more intuitive interactive program. It includes a structure of multiple- level scenes controls, the reusable and independent sensors systems by using the OSC protocol, and the creative function module in platform Unity with multiple input controls
Zayrit, Karima. "Fusion de données imparfaites multi-sources : application à la spatialisation qualifiée des pratiques agricoles." Thesis, Reims, 2015. http://www.theses.fr/2015REIMS041/document.
Повний текст джерелаOur thesis is part of a regional project aiming the development of a community environmental information system for agricultural practices in the watershed of the Vesle. The objective of this observatory is 1) to understand the practices of responsible of the water resource pollution by pesticides from agriculture in the study area and 2) to provide relevant and sustainable tools to estimate their impacts. Our open issue deals with the consideration of imperfection in the process of merging multiple sources and imperfect data. Indeed, information on practices is not exhaustive and is not subject to return, so we need to build this knowledge through the combination of multiple sources and of varying quality by integrating imperfect information management information in the system. In this context, we propose methods for spatial reconstruction of information related to agricultural practices from the RPG remote sensing, field surveys and expert opinions, skilled reconstruction with an assessment of the quality of the information. Furthermore, we propose a conceptual modeling of agronomic entities' imperfect information system building on UML and PERCEPTORY.We provide tools and models of representation of imperfect information from the various sources of information using fuzzy sets and the belief function theory and integrate these models into the computation of agri-environmental indicators such as TFI and ASQ
Camara, Mamadou Baïlo. "Supercondensateurs pour échange dynamique d'énergie à bord du véhicule électrique hybride : modélisation, étude des convertisseurs et commande." Besançon, 2007. http://www.theses.fr/2007BESA2060.
Повний текст джерелаThis subject is the continuity of the works started at L2ES Laboratory within the framework of ECCE program in collaboration with CREEBEL which ensures the financial support. ECCE test bench is a series electrical hybrid vehicle with 4 independent wheels and a rated power of 120kW. The main energy source consists of two diesel motors and each is coupled to one alternator. The produced energy feeds 4 electric traction motors; the remainder is stored by the batteries. This thesis presents the energy coupling strategies between these batteries and the supercapacitors to ensure dynamics in energy supply and storage for the hybrid vehicle. A bibliographical study has allowed to review technical progress and the available applications of the supercapacitors. A simplified model of supercapacitors which accurately translates the behavior of the cells during the charge and discharge is developed. Several DC/DC converters topologies with original strategies of embarked power management are developed. These topologies are based on the Buck-Boost converters and DC/AC-AC/DC converters with high frequency planar transformer. For cost raisons, the experimental test benches have been designed at a reduced scale (1/10). The experimental results obtained have allowed to compare the topologies performances for two control strategies. The polynomial control strategy (RST) is compared to classical PI correctors. These comparative studies have allowed choosing the best topology intended for the supercapacitors coupling to ECCE DC-bus
Ravi, Mondi. "Confiance et incertitude dans les environnements distribués : application à la gestion des donnéeset de la qualité des sources de données dans les systèmes M2M (Machine to Machine)." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAM090/document.
Повний текст джерелаTrust and uncertainty are two important aspects of many distributed systems. For example, multiple sources of information can be available for the same type of information. This poses the problem to select the best source that can produce the most certain information and to resolve incoherence amongst the available information. Managing trust and uncertainty together forms a complex problem and through this thesis we develop a solution to this. Trust and uncertainty have an intrinsic relationship. Trust is primarily related to sources of information while uncertainty is a characteristic of the information itself. In the absence of trust and uncertainty measures, a system generally suffers from problems like incoherence and uncertainty. To improve on this, we hypothesize that the sources with higher trust levels will produce more certain information than those with lower trust values. We then use the trust measures of the information sources to quantify uncertainty in the information and thereby infer high level conclusions with greater certainty.A general trend in the modern distributed systems is to embed reasoning capabilities in the end devices to make them smart and autonomous. We model these end devices as agents of a Multi Agent System. Major sources of beliefs for such agents are external information sources that can possess varying trust levels. Moreover, the incoming information and beliefs are associated with a degree of uncertainty. Hence, the agents face two-fold problems of managing trust on sources and presence of uncertainty in the information. We illustrate this with three application domains: (i) The intelligent community, (ii) Smart city garbage collection, and (iii) FIWARE : a European project about the Future Internet that motivated the research on this topic. Our solution to the problem involves modelling the devices (or entities) of these domains as intelligent agents that comprise a trust management module, an inference engine and a belief revision system. We show that this set of components can help agents to manage trust on the other sources and quantify uncertainty in the information and then use this to infer more certain high level conclusions. We finally assess our approach using simulated and real data pertaining to the different application domains
Wei, Lijun. "Multi-sources fusion based vehicle localization in urban environments under a loosely coupled probabilistic framework." Phd thesis, Université de Technologie de Belfort-Montbeliard, 2013. http://tel.archives-ouvertes.fr/tel-01004660.
Повний текст джерелаKlaimi, Joelle. "Gestion multi-agents des smart grids intégrant un système de stockage : cas résidentiel." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0006/document.
Повний текст джерелаThis thesis focuses on the decentralized management using multi-agent systems of energy, including renewable energy sources, in the smart grid context. Our research aims to minimize consumers’ energy bills by answering two key challenges: (1) handle the problem of intermittency of renewable energy sources; (2) reduce energy losses. To overcome the problem of renewable resources intermittency and in order to minimize energy costs even during peak hours, we integrated an intelligent storage system. To this end, we propose many algorithms in order to use intelligent storage systems and multi-agent negotiation algorithm to reduce energy cost while maintaining a minimal discharge rate of the battery and minimal energy loss. The validation of our contributions has shown that our proposals respond to the identified challenges, including reducing the cost of energy for consumers, in comparison to the state of the art
Bouhali, Omar. "CONTRIBUTION DES CONVERTISSEURS MULTINIVEAUX AU RACCORDEMENT DE LA PRODUCTION D'ORIGINE EOLIENNE SUR UN RESEAU ELECTRIQUE." Phd thesis, Ecole Centrale de Lille, 2007. http://tel.archives-ouvertes.fr/tel-00152745.
Повний текст джерелаLorette, Guillaume. "Fonctionnement et vulnérabilité d'un système karstique multicouche à partir d'une approche multi-traceurs et d'un suivi haute-résolution : application aux Sources du Toulon à Périgueux (Dordogne, France)." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0116/document.
Повний текст джерелаThis work is included in an approach for a better knowledge of karst aquifers. For this, the Toulon Springs pilot site was chosen, and provides the opportunity to study relationships between multilayered karst aquifers of the northern edge of the Aquitaine sedimentary basin. Toulon Springs are major regional springs and are located in Périgueux (Dordogne County, France). They have been supplying water to the metropolitan area of Périgueux since 1832.This work aim to test an innovative multitracer approach coupled with a physicochemical high-resolution auto-monitoring to characterize functioning and vulnerability of a multilayered karst aquifer.The use of a coupled hydrodynamic and hydrochemical approach has highlighted Toulon Springs supply by a deep and captive aquifer, in addition to a more subsuperficial aquifer. This information has been incorporated into the global hydrogeological situation of the study area to propose a new delineation of Toulon Springs hydrogeological cathment.The use of a high-resolution monitoring enables to specify the hydrogeological functioning of the studied karst system. The analysis performed on several flood events, identify that mass transfer can range from a few days to a few weeks.The use of nitrate isotope (δ15N-NO3- ; δ18O-NO3-) enables to identify two main nitrate sources in both surface water and groundwater: (i) inorganic fertilizer; (ii) sewage from individual house.The last part of this work was to analyse Toulon Springs temporal vulnerability during floods to marker of contamination such as particles, dissolved organic carbon, nitrate, and bacteria. Hence, several water type from surface runoff, unsaturated zone and saturated zone were identify as responsible of contaminant transfer: (i) water from saturated zone is responsible of vulnerability to mineral particles ; (ii) water from unsaturated zone is responsible of vulnerability to nitrare ; (iii) water from surface runoff is responsible of vulnerability to bacteria contamination
Amicarelli, Elvira. "Stratégies de gestion des réseaux électriques intelligents à fort taux de production renouvelable distribuée." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT056/document.
Повний текст джерелаIn 2007 with the renewable energy directive, the European Union established the development of a low-carbon economy. This directive aims to decrease greenhouse gas emissions by increasing the energy produced by renewable energy. Already today, the massive diffusion of renewable systems is tangible in the European electricity mix. However, in spite of their potential benefits, their large-scale integration leads to new technical and regulatory questions. Consequently, new management strategies need to be developed and applied in order to ensure a reliable and economical operation of the system. Microgrids are considered to be one of the most effective and flexible solutions able to meet these new needs.The main goals of this thesis are the conceptualization, development and implementation of different management strategies for microgrids. The algorithms developed aim to facilitate the massive integration of renewables and at the same time lead to an effective and economic operation of the systems. A new architecture of distribution grids based on cluster of microgrids was proposed. Each microgrid is composed of a number of renewable-based and conventional generation systems, storage systems and consumption. An optimal and distributed energy management strategy was then defined and developed. This strategy allows to manage the short-term energy management and real-time control of microgrids by using the connected sources in a smart and cost-efficient way. A multi-agent system and the mixed integer linear optimization technique were used for the implementation of this strategy.From a global point of view, each microgrid is seen as a coherent entity, which can support network operation by using its flexible and aggregated sources. Hence, the second part of this thesis aims to understand how distribution grids can exploit these cluster of microgrids and their properties. Different mechanisms for the active management of distribution grids are conceptualized from the technical and economical point of view. A new strategy based on hierarchical management of different smart levels allow to reduce the complexity of the system and to implement a more flexible and extensible system, thanks to a more local use of model knowledge and users behaviour. On the end, the theoretical work were tested on an experimental test-bed in order to show the effectiveness of the proposed theories
Nasser, Mohamed. "Supervision de sources de production d'électricité hybrides éolien/hydraulique dans les réseaux d'énergie interconnectés ou isolés." Phd thesis, Paris, ENSAM, 2011. http://pastel.archives-ouvertes.fr/pastel-00593845.
Повний текст джерелаCamara, Mamadou Baïlo Camara. "SUPERCONDENSATEURS POUR ÉCHANGE DYNAMIQUE D'ÉNERGIE A BORD DU VÉHICULE ÉLECTRIQUE HYBRIDE: Modélisation, étude des convertisseurs et commande." Phd thesis, Université de Franche-Comté, 2007. http://tel.archives-ouvertes.fr/tel-00465581.
Повний текст джерелаAgbli, Kréhi Serge. "Modélisation multiphysique des flux énergétiques d’un couplage photovoltaïque-électrolyseur PEM-pile à combustible PEM en vue d’une application stationnaire." Thesis, Besançon, 2012. http://www.theses.fr/2012BESA2001/document.
Повний текст джерелаA stand alone multi-source system based on the coupling of photovoltaic energy and both a PEM electrolyser and a PEMFC for stationary application is studied. The system gathers photovoltaic array as main energy source, ultracapacitors and batteries packs in order to smooth respectively fast and medium dynamic by supplying the load or by absorbing photovoltaic source overproduction. Because of the necessity of fuel availability, especially for islanding application like this one, a PEM electrolyser is integrated to the system for in situ hydrogen production.The main purpose being modeling and management of the power flows in order to meet the energy requirement without power cut, a graphical modeling tool namely Energetic Macroscopic Representation (EMR) is used because of its analysis and control strengths. Thanks to the modular feature of the EMR, the different models of each energetic entity of the system are performed before their assembling.By using scale effect, the energetic system sizing is performed according to a household power profile. Then, by the help of the multi-level representation, the maximal control structure (MCS) is deduced from the system EMR model. The electrical reference values of the MCS are generated by applying the power balancing method involving the own dynamic of each source into the energy management strategy. Different behavior modes are taken into account. By considering an irradiance profile for one day, the system is simulated highlighting its suitable behaviour. Moreover, the relevance of the introduced coupling between fuzzy logic controller and the power balancing method is pointed out
Paniah, Crédo. "Approche multi-agents pour la gestion des fermes éoliennes offshore." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112067/document.
Повний текст джерелаRenewable Energy Sources (RES) has grown remarkably in last few decades. Compared to conventional energy sources, renewable generation is more available, sustainable and environment-friendly - for example, there is no greenhouse gases emission during the energy generation. However, while electrical network stability requires production and consumption equality and the electricity market constrains producers to contract future production a priori and respect their furniture commitments or pay substantial penalties, RES are mainly uncontrollable and their behavior is difficult to forecast accurately. De facto, they jeopardize the stability of the physical network and renewable producers competitiveness in the market. The Winpower project aims to design realistic, robust and stable control strategies for offshore networks connecting to the main electricity system renewable sources and controllable storage devices owned by different autonomous actors. Each actor must embed its own local physical device control strategy but a global network management mechanism, jointly decided between connected actors, should be designed as well.We assume a market participation of the actors as an unique entity (the coalition of actors connected by the Winpower network) allowing the coalition to facilitate the network management through resources aggregation, renewable producers to take advantage of controllable sources flexibility to handle market penalties risks, as well as storage devices owners to leverage their resources on the market and/or with the management of renewable imbalances. This work tackles the market participation of the coalition as a Cooperative Virtual Power Plant. For this purpose, we describe a multi-agent architecture trough the definition of intelligent agents managing and operating actors resources and the description of these agents interactions; it allows the alliance of local constraints and objectives and the global network management objective.We formalize the aggregation and planning of resources utilization as a Markov Decision Process (MDP), a formal model suited for sequential decision making in uncertain environments. Its aim is to define the sequence of actions which maximize expected actual incomes of the market participation, while decisions over controllable resources have uncertain outcomes. However, market participation decision is prior to the actual operation when renewable generation still is uncertain. Thus, the Markov Decision Process is intractable as its state in each decision time-slot is not fully observable. To solve such a Partially Observable MDP (POMDP), we decompose it into a classical MDP and an information state (a probability distribution over renewable generation errors). The Information State MDP (IS-MDP) obtained is solved with an adaptation of the Backwards Induction, a classical MDP resolution algorithm.Then, we describe a common simulation framework to compare our proposed methodology to some other strategies, including the state of the art in renewable generation market participation. Simulations results validate the resources aggregation strategy and confirm that cooperation is beneficial to renewable producers and storage devices owners when they participate in electricity market. The proposed architecture is designed to allow the distribution of the decision making between the coalition’s actors, through the implementation of a suitable coordination mechanism. We propose some distribution methodologies, to this end