Dissertations / Theses on the topic 'Micro-générateur'
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Raisigel, Hynek. "Micro-générateur magnétique planaire et micro-convertisseur intégré." Grenoble INPG, 2006. http://www.theses.fr/2006INPG0193.
Full textThis thesis deals with electric micro-generation and micro-energy management. The developed micro-generator is a millimetre-scale, planar, axial-flux, ironless, permanent magnet, synchronous machine compatible with fast rotating MEMS turbines. Established multiphysical model enables the magnetic generator performance estimation in dependence on its operating point and geometry. A 8mm diameter magnetic micro-generator has been successfully tested to speeds up to 380 000 rpm ; at this speed it generates 5W with an electrical efficiency of 57%. A prototype of a fully integrated micro-turbo-generator generated about 15mV at 60000 rpm. Low power AC/DC micro converters for low voltage micro generators were also studied. A three-phase, high efficiency, low voltage, low power and fully autonomous micro rectifier was monolithically integrated in the CMas 0,35 μm technology. The tests on the μ-rectifier cou pied to the magnetic generator confirmed its functionality and high efficiency
Dang, Thu Thuy. "Optimisation de l'ensemble convertisseur-générateur-commande intégré à un système de micro-cogénération thermo-mécano-électrique." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2013. http://tel.archives-ouvertes.fr/tel-01063146.
Full textLossec, Marianne. "Systèmes multisources de récupération d'énergie dans l'environnement humain : modélisation et optimisation du dimensionnement." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2011. http://tel.archives-ouvertes.fr/tel-00618233.
Full textFrançois, Pierre. "Contribution à la modélisation électromagnétique d’un générateur linéaire à induction appliquée à un micro-cogénérateur Stirling à piston libre." Thesis, Cachan, Ecole normale supérieure, 2011. http://www.theses.fr/2011DENS0003.
Full textThis thesis focuses on the development of a residential cogenerator which consists of a linear induction generator driven by two Stirling engines, free-piston double-acting operating mode. The criteria characterizing such cogenerator are described and its various modes of use in the residential sector. The various technologies are reviewed.The equations of mechanics that underlie the control of the coupling of thermoelectric cogeneration and stability are defined.The electric generator is modeled to calculate the electrical coil coupled equations and the magnitudes of the equivalent circuit, this scheme allows us to reverse the pattern. The results of analytical models are validated by measurements on specially designed models. A parametric study of the structure of the generator has optimized its performances. The equations of mechanical and electrical model are used to lay the groundwork for optimization of all the cogenerator, considered as a system
Tani, Abdallah. "Structures des convertisseurs modulaires associés aux technologies de stockage : applications aux domaines résidentiels et véhicules électriques." Le Havre, 2013. http://www.theses.fr/2013LEHA0001.
Full textThis thesis is a continuation of the works based on the multi-source systems power management problems started by GREAH laboratory. It is funded by the “Haute Normandie Region”. This report presents some topologies of the DC/DC converters used in the hybrid electric vehicles applications, and the residential micro-grids ones. The studied topologies are based on the DC/DC converters such as the buck-boost and the interleaved-buck converters. Two original methods for electrical energy management in the multi-source systems are proposed and their performances are evaluated. The proposed methods enable to decouple the role of the energy source (lithium battery or fuel cell) compared to the power source (supercapacitors), and then manage the energetic exchange between the sources and the load. The proposed methods (frequency approach and distribution of the average power) consist to decompose the current of the load or the current from the pollution source into two components. The dynamic component called high frequency component is assigned to the supercapacitors, and the components which present slow variations or null called low frequency component is attributed to the lithium battery or fuel cell. For reasons of cost, the experimental test bench is carried out in the reduced scale. The obtained experimental results are used to evaluate the performance of topologies and control strategies proposed
Moulichon, Audrey. "Conception d'un système adaptatif dynamique de "générateur synchrone virtuel" pour la stabilisation des micro-réseaux électriques à fort taux de pénétration d'énergie renouvelable." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT064.
Full textThe classical distributed energy resources (DER) supplying energy to microgrids (usually diesel generator-sets) are progressively supplanted by supplier based on renewable energy sources (RES). However, the intermittency of RES leads to major stability issues, especially in the context of microgrids, notably because these sources usually decrease the available inertia of the grid. Hence, the traditional control strategies for inverters, interfacing the various DERs connected to the microgrid, needs adapting.The virtual synchronous generator (VSG) is one of the most popular solution that can participate in increasing the microgrids inertia and that could be integrated into traditional stability studies because it presents similarities with a synchronous machine. As the VSG is still a recent concept, mostly considered for the DER integration in microgrid, various problematics remain unresolved (some of which are addressed in this manuscript). In addition, the different solutions that can be found in the literature do not consider the industrial and practical aspect of its development (also considered in this industrial thesis).This thesis is dedicated to the VSG-based inverters and their integration in microgrids with a high level of variable renewable energy penetration. This PhD have been carried out thanks to the cooperation between two laboratories, G2Elab and Gipsa-Lab, in collaboration with Schneider Electric and its R&D team, Power Conversion
Durou, Hugo. "Vers l'autonomie énergétique des réseaux de capteurs embarqués : conception et intégration d'un générateur piézoélectrique et d'un micro dispositif de stockage capacitif en technologie silicium." Phd thesis, Université Paul Sabatier - Toulouse III, 2010. http://tel.archives-ouvertes.fr/tel-00578741.
Full textZhou, Tao. "Commande et supervision énergétique d'un générateur hybride actif éolien incluant du stockage sous forme d'hydrogène et des super-condensateurs pour l'intégration dans le système électrique d'un micro réseau." Phd thesis, Ecole Centrale de Lille, 2009. http://tel.archives-ouvertes.fr/tel-00474041.
Full textLu, Di. "Conception et contrôle d'un générateur PV actif à stockage intégré : application à l'agrégation de producteurs-consommateurs dans le cadre d'un micro réseau intelligent urbain." Phd thesis, Ecole Centrale de Lille, 2010. http://tel.archives-ouvertes.fr/tel-00586393.
Full textLaczko, Andreea-Adriana. "Optimisation du dimensionnement et de la commande par cycle de fonctionnement d'un générateur à aimants permanents et à auto-commutation pour appications micro-éoliennes." Thesis, Ecole centrale de Lille, 2016. http://www.theses.fr/2016ECLI0024/document.
Full textThe design of a micro-wind energy conversion system represents the core of this study. The attention is derived towards the brushless DC permanent magnet generator with outer rotor configuration and trapezoidal induced back-EMF voltages. The global aim of the thesis is represented by the attempt of determining the optimal geometrical and electrical design parameters of the BLDCPM generator that give the minimum total power losses in the system, over long-term wind speed cycle operation and thereby increasing the efficiency of the overall system. In advance to the optimization, an adapted simulation model needs to be developed in terms of results accuracy and simulation time. This is done in the first part of the thesis by determining the modeling level, as well as the design variables of each component of the system. As the optimization appeals to an algorithm for the design process, the reduction of the simulation time has been investigated in the third and fourth part of the thesis by developing a suitable method that allows the integration and exploitation of the available data from the wind-speed profile when determining the totality of the power losses in the system. Afterwards, the optimization methodology is presented along with the optimum results obtained, as well as comparison of several input/output parameters. Finally, experimental tests are also carried out on a reference BLDCPM machine prototype in order to verify its electronic commutation and control technique
Lu, Di. "Conception et contrôle d’un générateur PV actif à stockage intégré : application à l’agrégation de producteurs-consommateurs dans le cadre d’un micro réseau intelligent urbain." Thesis, Ecole centrale de Lille, 2010. http://www.theses.fr/2010ECLI0021/document.
Full textThe integration of PV power generation in a power system reduces fuel consumption and brings environmental benefits. However, the PV power intermittency and fluctuations deteriorate the power supply quality. A solution is proposed by adding energy storages, which are coordinated by a local controller that controls the power flow among all sources and implements an inner energy management. This PV based active generator can generate power references and can provide ancillary services in an electric network. Then micro grid concepts are derived to design a central energy management system of a residential network, which is powered by PV based active generators and a gas micro turbine. A communication network is used to exchange data and power references. An energy management system is developed with different time-scale functions to maximize the use of PV power. An operational daily planning is designed by a determinist algorithm, which uses 24 hour-ahead PV power prediction and load forecasting. Then power references are refreshed each half of an hour by considering the PV power availability and the states of energy storage units. Prediction errors and uncertainties are compensated by primary frequency controllers. Simulation and testing results validate the design of the PV active generator local controller and the central energy management system of the studied residential network
Bernard, Serge. "Test intégré pour Convertisseurs Analogique/Numérique." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2001. http://tel.archives-ouvertes.fr/tel-00003665.
Full textL'objectif des travaux présentés dans cette thèse est donc la conception et le développement de structures d'auto-test intégré (BIST) permettant le test par histogramme des CAN. L'implantation directe sur silicium de cette technique de test ne serait pas possible car elle nécessiterait un surcoût de silicium important. Pour rendre cette intégration viable nous avons donc été amenés à envisager des solutions originales basées sur la décomposition et l'analyse par histogramme. Cette approche, associée à la mise en place d'un certain nombre de simplifications des calculs d'extraction nous a permis de réduire considérablement les ressources matérielles (mémoires, module de calcul) à intégrer. Enfin, pour compléter cette structure BIST, nous avons conçu une architecture originale de générateur de rampe et de générateur de signaux triangulaires. Ces générateurs utilisent un système d'auto-calibration qui leur permet de générer un signal précis et insensible aux variations des paramètres technologiques tout en impliquant une surface de silicium minimale.
Zhou, Tao. "Commande et supervision énergétique d’un générateur hybride actif éolien incluant du stockage sous forme d’hydrogène et des super-condensateurs pour l’intégration dans le système électrique d’un micro réseau." Thesis, Ecole centrale de Lille, 2009. http://www.theses.fr/2009ECLI0010/document.
Full textA hybrid power system is studied in this thesis for the distributed generation based on renewable energy resources and energy storage systems in microgrid applications. It consists of a wind generator as primary energy source, super-capacitors as fast-dynamic storage system, fuel cells and electrolyzers as long-term storage system in hydrogen. They are all connected to a common DC bus and an inverter is used for the connection of the whole system to the grid. In this thesis, we have presented the system modeling, the control design including the power balancing and energy management strategies. This hybrid power system can finally supply controllable smooth powers as most conventional power plants. The performances have been tested in numerical simulations and also on an experimental test bench. As result, it is able to provide ancillary services to the microgrid. The main scientific contributions of this thesis are: the use and the adaptation of the graphical tools for the modeling of complex systems and their design; the design and the experimental implementation of real-time emulators in order to reduce the time and the cost of an experimental platform; the proposition and the validation of two power balancing strategies for the DC-bus voltage regulation and the grid power control and finally the proposition of energy management strategies for the active wind generator to ensure the energy availability
Ben, Attouch Mohamed Walid. "Conception d'un capteur de température, d'un récepteur LVSD et d'un générateur de charge en technologie CMOS 0,18 um pour un scanner TEP/TDM." Mémoire, Université de Sherbrooke, 2011. http://savoirs.usherbrooke.ca/handle/11143/1622.
Full textCabal, Cedric. "Optimisation énergétique de l'étage d'adaptation électronique dédié à la conversion photovoltaïque." Phd thesis, Université Paul Sabatier - Toulouse III, 2008. http://tel.archives-ouvertes.fr/tel-00357487.
Full textMeekhun, Dariga. "Réalisation d'un système de conversion et de gestion de l'énergie d'un système photovoltaïque pour l'alimentation des réseaux de capteurs sans fil autonome pour l'application aéronautique." Phd thesis, INSA de Toulouse, 2010. http://tel.archives-ouvertes.fr/tel-00554679.
Full textMarchaland, David. "Architectures et Circuits dédiés aux Émetteurs Ultra Large Bande Bas Débit." Phd thesis, Université de Marne la Vallée, 2007. http://tel.archives-ouvertes.fr/tel-00260482.
Full textAssociée à ce contexte applicatif, cette thèse propose dans un premier temps une présentation des fondamentaux de la technologie Ultra Large Bande (ULB) suivie par un statut sur la réglementation mondiale et le standard IEEE 802.15.4a ; un cahier des charges d'un émetteur impulsionnel est ainsi établi. Confronté à un état de l'art des générateurs d'impulsions, il met en lumière la nécessité de développer de nouveaux émetteurs, ce que nous proposons à travers une architecture basée autour d'un DAC RF différentiel fonctionnant à 4GHz. Un principe novateur de génération de bursts compatibles avec le standard IEEE 802.15.4a est ensuite développé ; il permet de réduire la complexité globale de l'émetteur. Dans un second temps, l'architecture proposée est dimensionnée au niveau de ses blocs numériques et RFs puis son implémentation est effectuée dans la technologie ST CMOS 65nm. Le principe fonctionnel de l'architecture du générateur est validé par la mesure du circuit qui affiche une efficacité de 38pJ par impulsion pour une fréquence de répétition de 500MHz et une puissance moyenne de sortie de 0dBm.
Ramond, Adrien. "Conception et réalisation d'une nouvelle architecture multi-entrées multi-sorties pour la gestion de micro puissance dans les systèmes autonomes." Phd thesis, INSA de Toulouse, 2011. http://tel.archives-ouvertes.fr/tel-00660368.
Full textCid, Pastor Angel. "Conception et réalisation de modules photovoltaïques électroniques." Phd thesis, INSA de Toulouse, 2006. http://tel.archives-ouvertes.fr/tel-00128644.
Full textGrébert, Arnaud. "Simulation numérique aux grandes échelles du contrôle de l'interaction onde de choc/couche limite au moyen de micro-générateurs de vortex." Thesis, Toulouse, ISAE, 2018. http://www.theses.fr/2018ESAE0046.
Full textBecause it is ubiquitous in high Mach number internal and external flow of interest in aeronauticalapplications, shock wave/turbulent boundary layer interaction (SBLI) is characterised by alow-frequency unsteadiness which generates large wall-pressure fluctuations that can occur at theresonant frequency of the structures. This work is devoted to the study of passive flow controldevices such as microramp vortex generators (mVGs) to alleviate these detrimental effects of SBLI.Large-eddy simulations (LES) have been performed based on an experimental configurationby Wang et al. (2012) of a SBLI under the influence of microramps at a Mach number ofM = 2.7 and a Reynolds number of Re× = 3600. The use of microramps has been shown toenable a reorganisation of the recirculation zone by breaking the spanwise homogeneity of theinteraction, yielding to a change of the reflected shock foot back and forth motion along the span.Additional simulations on three new configurations allowed to assess the effectiveness of microrampsin controlling the SBLI by comparing reduced size mVGs with more conventional ones
Reynaud, Jean-François. "Recherches d'optimums d'énergie pour charge/décharge d'une batterie à technologie avancée dédiée à des applications photovoltaïques." Phd thesis, Université Paul Sabatier - Toulouse III, 2011. http://tel.archives-ouvertes.fr/tel-00559630.
Full textSouzy, Nicolas. "Experimental study and improvement of mass transfer in vertical bubble columns." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10201/document.
Full textBubble column are involved in many industrial fields ranging from chemical industry to mineral processing. It recently became an industrial stake for the production of micro-algae intended for medicinal use, food or energy: the oxygen and carbon dioxide concentrations can be controlled via the efficient mass transfer induced by the significant gas-liquid interfaciale area into the bubble column. Firstly, experimental closed-loop study has been carried out to simulate the passage of gas in a succession of columns in series. The associated theoretical model confirms the critical importance of the bubble diameter for mass transfer.Therefore, an innovative Micro-Bubble Generator (MBG) has been designed and tested. The prototype is able to produce micro-bubbles of average diameter Dbubble = 0.252 mm. The invention has been officially declared. The last chapter aims at improving data treatment methods for Planar Laser-Induced Fluorescence (PLIF), which enables to obtain experimentally mass transfer coefficient kl through concentration measurements. The first presented correction takes into account variations of the fluorescence extinction due to pH during the calibration step, and has been evaluated on CO2 concentration measurement in the wake of a free rising bubble. The second proposed correction should be applied when the length in the measurement region over which pH variations are observed increases: variations of the extinction coefficient will affect the local incident light intensity and therefore the measurements. The need for this correction has been illustrated on a test case in the wake of a cloud of free rising bubbles
Yan, Xingyu. "Gestion énergétique sous incertitude : Application à la planification et à l'allocation de réserve dans un micro réseau électrique urbain comportant des générateurs photovoltaïques actifs et du stockage." Thesis, Ecole centrale de Lille, 2017. http://www.theses.fr/2017ECLI0005/document.
Full textThe massive development of intermittent renewable energy technologies in power systems affects the operation of electrical systems. Due to technical limitations and investments needed to maintain the current electrical security level, issues related to dispatching, static and dynamic stability could stop the development of these distributed renewable energy sources (RES). The subject of the PhD is to develop a tool to study the uncertainties of PV power and load forecasting in an urban network. Firstly, the uncertainties are modeled by studying the uncertainty nature of PV power and load. With stochastic methods, the day-ahead operating reserve (OR) is quantified by taking into account an associated reliability risk index. Then the OR is dispatched into different power generators (active PV generators and micro gas turbines). To minimize the microgrid total operational cost and/or equivalent CO2 emissions, day-ahead optimal operational planning and dispatching of the OR into different power generators is implemented. Finally, a freeware “A User-friendly Energy Management System and Operational Planning Supervisor” is developed based on the Matlab GUI to conceptualize the overall system operation
Yin, Changjie. "Impact of diesel generator operating modes on standalone DC microgrid and control strategies implying supercapacitor." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2411/document.
Full textThe intermittent and random nature of renewable sources, such as photovoltaic and wind turbine, asks for the complement of storage, such as battery and back-up energy, such as diesel generator, especially in a standalone power system. Concerning the diesel generator, it needs some time to start up and cannot immediately offer the needed power, due to its dynamic behavior. Hence, the power quality is lowered down during this period because of the shortage of power. Therefore, during the period of the diesel generator starting up, a supercapacitor is suggested to compensate the power balance because of its fast response and high power density. A power control strategy is proposed to achieve the coordination between diesel generator and supercapacitor. Both simulation and experimental results show that the proposed control strategy is able to regulate the DC bus voltage within the acceptable limits and supplying the load during the renewable power under generation or load step-increase situations. In addition, the supercapacitor can be also used to overcome the electrochemical storage limits like its state of charge and maximum current. So, this thesis proposes the real time power control for a hybrid photovoltaic-battery-supercapacitor-diesel generator DC microgrid system, aiming to meet the load power demand with reliability and stabilizing the DC bus voltage. Both simulation and experimental results show that the designed control strategy improves the DC microgrid dynamic and static performances under different operating conditions. Furthermore, in order to minimize the diesel generator energy cost, the fuel cost and fuel consumption are analysed through several experimental tests. Therefore, the optimal value of its power generation is deduced and applied in a newly proposed energy management strategy. This strategy can achieve the goal of maximizing the utilization of photovoltaic energy and taking into account the slow start-up characteristic and energy cost of diesel generator. Both simulation and experimental studies are carried out by using the real photovoltaic data to illustrate the performance and the behavior of the hybrid system. The obtained results verify the effectiveness of this strategy. Furthermore, the comparison with the previous energy management strategy, in which the diesel generator energy cost is not considered, demonstrates that the newly proposed energy management strategy can reduce the total cost of the hybrid DC power system
Vergote, Thomas. "Synthèse de générateurs de photoacides activables par absorption biphotonique pour la microfabrication à trois dimensions." Thesis, Mulhouse, 2014. http://www.theses.fr/2014MULH7514.
Full textSince the 60’s, the generation of strong Brönsted acids by a one-proton photoinduced process has been used in more and more research areas. Recently, it has been shown, that such acids are easily obtained by a two-photon process. This offers many advantages such as: i) a better reactivity owing to a direct excitation of the photoacid, ii) the possible use of a non-controlled atmosphere, iii) the use of inexpensive microlasers with sub-nanosecond impulsions, iv) the increase of spatial resolution in 3D microfabrication. The acid generation generally proceeds through a photo-induced electro transfer from an excited sensitizer to the photoacid generator (PAG). A promising approach should be the introduction on a single molecule of both a PAG and a two-photon active chromophore moiety. In this context, we have developed new PAGs able to initiate photopolymerisation through a two-photon activation process. The syntheses were focused on stilbenic push-pull systems having either a neutral or an ionic nature. A series of neutral PAGs bearing a diphenylamino donor group and an α-cyano iminosulfonate acceptor moiety has been synthesized. The preparation of neutral PAGs bearing iminosulfonate α-trifluoromethylated groups were not yet completed. The syntheses of ionic PAGs substituted by an ethoxy group, a diphenylamino group or a julolidine one, could not be completed either
Telandro, Vincent. "Conception d'un système d'alimentation intégré dédié à la sécurisation des cartes à puce." Phd thesis, Université de Provence - Aix-Marseille I, 2007. http://tel.archives-ouvertes.fr/tel-00268363.
Full textHuet, Florian. "Développement de structures hybrides électromécaniques pour micro-sources d'énergie : générateurs piézoélectriques linéaires et non linéaires." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAA029/document.
Full textThe implementation of wireless sensor nodes in industrial installations, transport or building is a potential route to increase the performances of these systems.By a proper supervision and exploitation of the collected information (temperature, vibratory level, humidity, etc.) the reliability and the energy performances can be increased. With the regular reduction of the power requirements for new generations of wireless sensors nodes, a strong scientific interest to develop autonomous power supply has raised.In this framework, a specific research topic appeared about ten years ago: ambient energy harvesting.The present work investigates the performances of an original micro-generator architecture for vibration energy harvesting: the “Hybrid Fluid Diaphragm” (HFD).The concept of HFD consists in encapsulating an incompressible fluid between two flexible membranes. The fluid behaves as an inertial mass which leads to a resonant frequency suitable for ambient vibrations whose spectrum is usually lower than a few hundred Hertz.These membranes are made of P(VDF-TrFE), a piezoelectric polymer, and are designed to ensure the optimal conversion of the mechanical solicitations (flexion/stretch) into electrical energy.A multiphysic modeling which integrates the fluid, the mechanical and the electric coupled behaviors is proposed.The realization and the characterization of two HFD's generators are detailed.A first prototype implements single layer piezoelectric membranes, whereas a second one uses optimized double layer membranes.The generated power appears to be sufficient to consider the power supply of wireless sensor nodes operating in intermittent transmitting mode. The very simple geometry of the proposed generators is favorable to their integration in realistic applications
Lopez, Santos Oswaldo. "Contribution to the DC-AC conversion in photovoltaic systems : Module oriented converters." Thesis, Toulouse, INSA, 2015. http://www.theses.fr/2015ISAT0001/document.
Full textThese last years, a growing interest in power electronic systems has been motivated by the emergence of distributed renewable energy resources and their interconnection with the grid. In this context, the need of low power topologies fed by a few photovoltaic modules avoiding the use of transformers opens the study of special converters and the associated control strategies ensuring stability, reliability and high efficiency. A resulted generic device known in the commercial and scientific literature as “microinverter” or “module integrated converter” performs a plug and play product together with the PV module called an “AC module”.This work is devoted to the study of a transformer-less single-phase double-stage grid-connected microinverter. The proposed topology has a non-isolated high-gain boost type DC-DC converter and a non-isolated buck type DC-AC converter connected in cascade through a DC bus. The DC-DC converter permanently extracts the maximum power of the PV module ensuring at the same time a good performance coping with power changes introduced by the change in the environmental conditions. The DC-AC stage injects the power extracted by the DC-DC stage into the grid ensuring a high level of power quality. The research efforts focus on the involved control functions based on the sliding mode control theory, which leads to a simple implementation with a comprehensive theoretical description validated through simulation and experimental results.After giving the state-of-the-art in the first chapter, the manuscript is divided into four chapters, which are dedicated to the Maximum Power Point Tracking (MPPT), the DC-DC stage and its control, the DC-AC stage and its control and the complete microinverter. A new Extremum Seeking Control (ESC) MPPT algorithm is proposed. The single-switch quadratic boost converter is studied operating as a Loss-Free-Resistor (LFR) obtaining a high DC output voltage level with a safe operation. The full-bridge converter is controlled as a Power Source Inverter (PSI) using a simple sliding-mode based tracking law, regulating the voltage of the DC bus and then ensuring a high power quality level in the grid connection. Finally, the three building blocks are merged to obtain a sliding mode controlled microinverter constituting the main result and contribution of the work
El, Yaagoubi Mohammed. "Contribution à la caractérisation temporelle de dispositifs micro-ondes non-linéaires : application à des signaux de type multiporteuse large bande." Limoges, 2006. https://aurore.unilim.fr/theses/nxfile/default/c7fe741c-de94-477f-8a8c-84b7e1915f60/blobholder:0/2006LIMO0068.pdf.
Full textThis work deals with the time domain characterization of non-linear devices when they are driven by broadband multitone signals. The goal is to develop an original configuration of a LSNA based measurement system (Large Signal Network Analyzer) allowing the flexibility in use and evolution capabilities for measurement of broadband modulated signals. It is described how to calibrate this bench and to exploit it to characterize new power transistor technologies as well as microwave power equipments. Two main solutions were studied to try to solve the problem of phase calibration of the system for wideband measurements. A first solution consists in narrow bandwidth interleaving. It is not very straightforward and remains complicated. A second and more efficient solution consists in using a harmonic phase reference with a fine frequency grid. Finally, this work has brought a solution for calibrated measurements of relative phases between tones of an 80MHz frequency multiplex used in satellite communication systems. We shall also mention that the hard but the key point of this work, is the self-calibration of the time equivalent sampling scope having served for the characterization of the phase reference generator
Raisigel, Hynek. "MICRO–GENERATEUR MAGNETIQUE PLANAIREET MICRO-CONVERTISSEUR INTEGRE." Phd thesis, 2006. http://tel.archives-ouvertes.fr/tel-00161880.
Full textd'énergie pour systèmes autonomes. Il s'agit du développement d'un micro générateur
discoïde, à aimants, sans fer et compatible avec des μ-turbines à gaz ou à air comprimé
opérant à haute vitesse de rotation (10 – 1 000 ktr/min). Le modèle multi-physique établi
permet d'évaluer la performance des μ-générateurs magnétiques en fonction de leurs
conditions de travail et de leurs paramètres géométriques. Un premier prototype intégré
produit une puissance de 15 mW à 60 000 tr/min, un second prototype produit 5 W à 380 000
tr/min avec ηel ≈ 57 %.
Les convertisseurs de faible puissance associés aux micro-alternateurs triphasés basse
tension sont ensuite étudiés. Un micro-redresseur triphasé, sans seuil et entièrement autonome
a été monolitiquement intégré en technologie CMOS 0,35 μm. La caractérisation a prouvé sa
pleine fonctionnalité ainsi que les bonnes performances.