Dissertations / Theses on the topic 'Générateur à aimants permanents'
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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
Missoum, Rachid. "Modélisation, conception et optimisation d'un moteur-générateur pour coupleur électromagnétique." Nantes, 2008. http://www.theses.fr/2008NANT2134.
Full textThis work focuses on the Modelling and the design optimization of an electrical motor-generator integrated in an electromagnetic coupler for automotive applications. A study of electric motor-generators and electromagnetic couplers used mainly in traction systems proposed in literature is presented. For the application witch is the aim of "Defontaine" company we proposed and studied two systems operating on the basis of two different principles. The first system adopts the principle of transmitting torque by friction and uses an axial flux homopolar motor-generator. The second is based on a system of dog clutch ; the motor-generator in this case is a permanents magnets synchronous machine. Both of the two topologies, axial and radial machines are studied. With the aim of design and optimization of the three machines, electromagnetic and thermal models are presented. These models are then coupled with a stochastic particle swarm optimization algorithm. For the particular case of the radial permanent magnet machine, we have developed an original method of optimization based on the direct calculation of the optimal parameters. This method is then used to study the case of the high speed machines. A test bench has been especially designed to validate the developed models and the two principles of electromagnetic couplers
Herrault, Florian. "Microgénérateurs à aimants permanents entraînés par des microturbines à air ou des micromachines à gaz chaud." Toulouse, INSA, 2009. http://eprint.insa-toulouse.fr/archive/00000250/.
Full textThe constant miniaturization of electronic systems has driven the development of new generations of ultra-compact power sources that could surpass the performance of conventional batteries. MEMS-based heat-engine-driven devices are very attractive in such small power systems. The focus of this research is to develop electromagnetic microsystems capable of generating electrical power, and driven by either cold or hot gases. First, rotary permanent-magnet microgenerators are developed for watt-level applications and compatibility with heat engines. Further miniaturization of such devices is also presented. Next, small-scale fluidic packages are coupled with these microgenerators. Polymer-based microturbines are engineered for air-driven micropower sources, and silicon-based gas-bearing microgenerators are developed for compatibility with micro heat engines. Finally, a fuel-driven power generator is presented, and consists of a MEMS-fabricated pulsejet and its electrical generator. The device, powered by a source of hydrogen fuel, demonstrates chemical-to-electrical power conversion
Laczko, 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
De, paula machado bazzo Thiago. "Conception optimale multidisciplinaire de générateurs synchrones à aimants permanents pour éoliennes tenant compte de la courbe d'occurrence du vent." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT016/document.
Full textThis Ph.D. dissertation presents a multidisciplinary optimum design methodology to permanent magnet synchronous generators applied to wind power. Such a methodology considers the electrical, the geometrical, the thermal, the electronic, the mechanical and the economical behaviors of the wind turbine. The wind occurrence curve, modelled by a statistical density function, is also take into account by the proposed design methodology. Considering this curve in the optimal design allows to calculate the amount of energy produced by the wind turbine, which operates under variable speed and power by the influence of the actual wind speed. The proposal of using the optimization in the design is to enhances the competitiveness of wind power by designing a generator with a good relation between its cost and its capacity to generate energy. Several studies are addressed to electrical machines optimum design related to wind power, however, few have presented a method able to estimate the wind turbine energy generation, which is mandatory to obtain a cost-effective generator. Further, the electric generator in-depth multidisciplinary aspects have been considered by the proposed method in more detail than other studies found in literature. Take into consideration all these aspects results in a large optimization problem that has approximately 2000 variables, among which approximately 250 have constraints imposed on. A deterministic optimization algorithm has been chosen to deal with this problem. Such an algorithm is capable of finding the solution within few iterations and a short time thanks to the computation of the Jacobean matrix, containing the exact gradients of the model (used to describe the wind turbine behavior) outputs. The presented results explore the proposed methodology potential. The first optimal design performed minimizes the generator active material cost, presenting a significant cost reduction compared to a non-optimal generator. Next, the contradiction between the generator cost and its efficiency is analyzed and the importance of including the wind turbine energy generation into the generator design becomes evident. Using the estimated wind turbine generated energy, the generator with maximum net earnings (equal to the wind turbine energy proceeds less the generator cost) has been obtained. This generator has a good ratio between its cost and capability to generate energy. Then, sensibility analysis have been carried out to verify how the electricity price and the annual mean wind speed influence the design. Finally, two wind turbines with different diameters and rated wind speeds have been employed, considering three distinct wind profiles. These results provide the generators more suited to each wind turbine applied to each wind profile, showing that the proposed design methodology has the ability to helps choosing the wind turbine adequate to each wind farm
Dakyo, Brayima. "Étude et réalisation de dispositifs à commande numérique pour l'alimentation d'une machine synchrone à aimants permanents par générateur photovoltaïque : stratégies de commande pour le pompage au fil du soleil." Le Havre, 1988. http://www.theses.fr/1988LEHA0003.
Full textAubert, Brice. "Détection des courts-circuits inter-spires dans les Générateurs Synchrones à Aimants Permanents : Méthodes basées modèles et filtre de Kalman étendu." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/11902/1/Aubert.pdf.
Full textVizireanu, Darius. "Conception optimale d’une génératrice synchrone à flux axial et aimants permanents pour une éolienne de 5MW en attaque directe." Ecole Centrale de Lille, 2007. http://www.theses.fr/2007ECLI0009.
Full textEncouraged by the economical (decentralization of energy production) and political context (Kyoto Protocol, Buenos Aires Conference, EOLE 2010 Program), the wind energy market meets a continuous growth. Jeumont Industries, an industrial partner of this research study, has developed during the previous decade a direct drive wind generator using an original axial flux permanent magnet synchronous generator. During last decades, important technological advance was noticed in different research areas, as permanent magnets and power semiconductors. Taking into consideration these evolutions, the goal of this study is to investigate the possibility to increase the power of a direct drive wind generator using Jeumont technology. The study is based on the development of multi-physical, multi-level and multi-scale model, which properly combines finite element analysis, dynamical simulation and analytical models. The use of the numerical tools allowed finding the system configuration which better corresponds to the imposed quality criteria: an odd phase number polyphased structure having uniform distribution, which allows easier winding technique, as concentrated one. Different possible configurations of chosen structure are analytically determined, numerically analyzed and ranked. The best ones are optimized and the designer’s final option depends on the compromise to be done between the economical aspects and performances of the system
Taghizadeh, Kakhki Mehdi. "Rectifier Solutions for a Transverse Flux Permanent Magnet Machine." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25400/25400.pdf.
Full textBerriaud, Christophe. "Moteur supraconducteur à aimants permanents." Grenoble 1, 1992. http://www.theses.fr/1992GRE10090.
Full textChillet, Christian. "Machine synchrone multidisque à aimants permanents." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376127407.
Full textSimon, Fabrice. "Moteur couplé supraconducteur à aimants permanents." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0149.
Full textChillet, Christian. "Machine synchrone multidisque à aimants permanents." Grenoble INPG, 1988. http://www.theses.fr/1988INPG0125.
Full textAubry, Judicaël. "Optimisation du dimensionnement d’une chaîne de conversion électrique directe incluant un système de lissage de production par supercondensateurs : application au houlogénérateur SEAREV." Thesis, Cachan, Ecole normale supérieure, 2011. http://www.theses.fr/2011DENS0042/document.
Full textThe work presented in this thesis sets forth the study of the sizing of a direct-drive electrical conversion chain for a direct wave energy converter (SEAREV). This electrical chain is made up of a permanent magnet synchronous generator attached to a pendular wheel and a power-electronic converter made up of two three-phase pulse width modulation bridge, one controlling the generator, the other allowing injecting electrical energy into the grid. In addition, an energy storage system (bank of supercapacitors) is intended to smooth the power output. The sizing of all these components needs an operating cycle optimization approach, in a system context with strong multi-physics coupling, more particularly between hydrodynamical and electromechanical parts. At first, the generator-converter set, whose role is to damp the pendular movement of an internal wheel, is optimized with a view to minimize the cost of energy (kWh production cost). This optimization, based on torque-speed operating profiles, is carried out considering a strong coupling with the wave energy converter thanks to the consideration as design variables, some relatives to the generator-converter sizing but also some relatives to the damping law of the pendular wheel. In addition, the consideration of a flux-weakening strategy, interesting to ensure a constant power operation (levelling), allows, as soon as the sizing step, to deal with the generator-converter interaction. In a second step, the rated energy capacity of the energy storage system is being optimized with a view of the minimization of its economical life-cycle cost. To do this, we define quality criteria of the power output, including one related to the flicker, and we compare three energy managment rules while taking into account the power cycling aging of the supercapacitors due to the voltage and their temperature. In a third step, from yearly sea-states data, we provide sizings of the direct-drive electrical conversion chain that are the best trades-offs in terms of total electrical produced energy and economical investment cost
Létourneau, Jean-François. "Méthode de dimensionnement d'alternateur à aimants permanents." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ61354.pdf.
Full textHugon, Cédric. "Aimants permanents pour la RMN et l'IRM." Versailles-St Quentin en Yvelines, 2010. http://www.theses.fr/2010VERS0044.
Full textPermanent magnets are a good alternative to superconducting magnets for NMR applications demanding a smaller magnetic field strength. This work focuses on the theoretical and experimental study of permanent magnet systems with controlled field profiles, suitable for NMR. After introducing a formalism based on spherical harmonics decomposition for the design of such magnets, we extended these concepts to the characterization (field mapping) and shimming of simulated or fabricated structures. The cases of the generation of a homogeneous field and of a strong field gradient have to be treated separately due to concomitant fields. Consequently, we provided a different framework for both situations. Using these frameworks, we fabricated several prototypes after our designs. We described the performance of a low-cost homogeneous in situ magnet achieving 0. 12~T with 12~ppm homogeneity in a 3~mm3 volume after shimming based on additional magnet pieces. In addition, a single-sided static gradient structure is presented. The shimming of this magnet, based on geometry alteration, demonstrated the possibility to map precisely a very strong field gradient (3 T/m) and to control the spatial variations of that profile. This single sided magnet was then integrated with surface coils of our own design in order to perform ex situ NMR experiments. We demonstrated the ability to perform relaxation time measurements and 1D imaging with a resolution of 15~µm over several millimeters
Benghezal, Karim. "Contribution à l'étude d'actionneurs synchrones à aimants permanents." Grenoble INPG, 1991. http://www.theses.fr/1991INPG0039.
Full textHarmim, Saïd, and Christian Chillet. "Etude analytique de machines synchrones à aimants permanents." Grenoble INPG, 1993. http://www.theses.fr/1993INPG0197.
Full textBommé, Edouard. "Modélisation et optimisation des machines électriques discoïdes à double entrefer." Grenoble INPG, 2009. http://www.theses.fr/2009INPG0155.
Full textThe evolution of technology and environmental problems has encouraged the development of new structures of electrical machines. Ln this thesis, we propose to study two structures: dual gap discoid machines and permanent magnets buried. Using current modelling tools (three-dimensional finite element modelling with FLUX) with new optimization methods (digital design of experiments methods) and ferromagnetic materials rarely used at present (iron powder), a study will be conducted on the industrial potential of each structure. At the end of this research, we propose new efficient machines within the small and medium power range. These machines, combined with proper supply, can be used as variable speed drives in ail sectors of industry
Bloch, Frédéric. "SOURCE DE CHAMP INTENSE 4 Tesla À AIMANTS PERMANENTS." Phd thesis, Grenoble INPG, 1999. http://tel.archives-ouvertes.fr/tel-00763901.
Full textZanini, Luiz. "Bio-Mag-MEMS autonomes basés sur des aimants permanents." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00820317.
Full textYoumssi, André. "Contribution aux calculs des machines synchrones à aimants permanents." Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL036N.
Full textLe, Roux Denis. "Etude cristallographique et magnétique de quelques matériaux pour aimants permanents." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37599172c.
Full textChavanne, Joël. "Contribution à la modélisation des systèmes statiques à aimants permanents." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376126163.
Full textBouzekri, Hacène. "Contribution à la commande des machines synchrones à aimants permanents." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL054N.
Full textChavanne, Joël. "Contribution à la modélisation des systèmes statiques à aimants permanents." Grenoble INPG, 1988. http://www.theses.fr/1988INPG0074.
Full textReama, Abdellatif. "Contribution à l'étude d'un servomoteur à aimants permanents et commutation électronique." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37609231c.
Full textBenabderrahmane, Chamseddine. "Développement d’un onduleur cryogénique à aimants permanents Pr2Fe14B au Synchrotron SOLEIL." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112139.
Full textUndulators are magnetic systems which produce periodic magnetic field. Synchrotron radiation sources called third generation produce high intensity radiation when relativistic particles are accelerated in this magnetic field. The radiation is emitted at shorter wave length for high magnetic field and small period undulators. A first solution consists to integrate the magnetic system in a big vacuum chamber. The subject of the thesis is to improve the magnetic performance of an in vacuum undulator of 30 % by cooling down the magnetic system at cryogenic temperature. Using Pr2Fe14B permanent magnet allows cooling down directly to the liquid nitrogen temperature which simplified the cooling system.IN chapter I the magnetic characteristics of undulators are described, different types of undulators are presented and the state of the art of cryogenic undulator is given. In chapter II permanent magnet samples Pr2Fe14B Nd2Fe14B from different companies are characterised. Two four period prototypes, one with Pr2Fe14B and one with Nd2Fe14B have been assembled and measured to compare with the magnetic system simulation. The magnetic design of a full scale 2 m Pr2Fe14B undulator has been performed. The period of the undulator is optimised and the magnetic forces calculated. In chapter III the mechanical design of the carriage and different mechanical parts is presented. Thermal studies which include the dissipated power from different mechanical parts and from the electrons beam for all filling modes and different positions in SOLEIL storage ring. The cooling system is optimised and the design of the cooled girders is presented. In chapter IV the different magnetic measurements methods are described and the magnetic measurement bench used at SOLEIL presented. The design of magnetic bench installed in the vacuum chamber and dedicated to the magnetic measurement at cryogenic temperature is presented. In chapter V the different steps for the construction of an in-vacuum undulator (magnetic assembly, shimming, magic finger, mechanical assembly of the vacuum chamber, installation and commissioning with the electrons beam) are presented. In chapter VI the different steps of the constructing of a cryogenic undulator, the assembly and the ajustement of cryogenic temperature magnetic bench are described. The magnetic measurements of the undulator at cryogenic and room temperature are compared. The commissioning of the undulator with the electrons beam is presented and the perspectives to improve this cryogenic undulator are proposed
Llibre, Jean-François. "Étude d'une structure de machine synchrone cylindrique vernier à aimants permanents." Toulouse, INPT, 1997. http://www.theses.fr/1997INPT086H.
Full textReama, Abdellatif. "Contribution à l'étude d'un servomoteur à aimants permanents et commutation électronique." Toulouse, INPT, 1987. http://www.theses.fr/1987INPT068H.
Full textCros, Jérôme. "Définition d'un actionneur à aimants permanents et électronique intégrée pour l'automobile." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT026H.
Full textKirouac, Mathieu. "Développement de modèles analytiques thermiques pour des machines à aimants permanents." Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26232.
Full textCe mémoire porte sur le développement d’une modélisation thermique avec des modèles analytiques, pour la conception de machines électriques. Il concerne plus particulièrement les structures de machines cylindriques à aimants permanents. Nous discutons ensuite du modèle thermique complet de type circuit thermique qui a été réalisé et confronté à des résultats expérimentaux. Ce modèle a une très bonne précision et il nous a permis d’étudier l’effet de différentes variations topologiques sur le comportement thermique ainsi que différentes stratégies de refroidissement. Ce modèle peut facilement être intégré dans un processus d’optimisation. En nous basant sur les mêmes principes, nous avons proposé un nouveau modèle à résistances thermiques combinées pour modéliser les échanges thermiques entre les conducteurs dans les encoches. Ce modèle permet d’apprécier le caractère aléatoire de la disposition des conducteurs dans la bobine et peut être jumelé à un modèle plus global.
This thesis focuses on the development of a thermal modeling with analytical models for the design of electrical machines. It concerns more particularly cylindrical machine with permanent magnets. The methods used to determine the critical parameters of thermal modeling are presented first. We then present the complete thermal model that has been developed and confronted with experimental results. This model has very good accuracy and has allowed us to study the effect of different topological variations on the thermal behavior. It was also possible to analyze and compare different cooling strategies. This model can easily be integrated into an optimization process to determine the maximum permissible losses of a given configuration, or to define the cooling method to use. Based on the same principles, we proposed a new model to simulate the thermal exchanges between the conductors in the slots. This model allows us to appreciate the randomness of the arrangement of the conductors in the coil. It can be paired with a more comprehensive model of the machine in order to refine the resolution of the latter and ensure a more accurate analysis of the thermal behavior of the coils.
Guedia, Guemo Gilles Romuald. "Modélisation et caractérisation thermique de machines électriques synchrones à aimants permanents." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0023/document.
Full textPermanent magnet synchronous machines are likely to break down due to poorly controlled heating. The goal of this study was to develop a generic and predictive thermal model to calculate the temperature of machines during the design phase simulating temperatures at various states. These states include: steady state, transient state, fault mode, axial circulating of a cooling fluid in the air-gap and high speed. The lumped parameter method was used to develop this generic thermal model. Meanwhile, a test bench and a prototype instrumented with thermocouples were manufactured to validate the model at the same time. Sensitivity studies of the results of the model to some parameters demonstrated that some convective coefficients, contact conductances and the thermal conductivity of the winding in the radial direction influenced the model. However, these parameters are poorly known, because empirical formulas or abacus are used to calculate them. Using, the prototype and the developed model, these parameters were identified. Three methods of identification were tested in order to find a strategy for the identification: the genetic algorithms method, the Gauss-Newton method and the Levenberg-Marquardt method. Many tests were done on the prototype. The measure of the temperatures on the specific place allows to identify these parameters and to validate the model
Zire, Hakim Saber. "Conception et optimisation des moteurs à aimants destinés à l'entraînement direct." Besançon, 2005. http://www.theses.fr/2005BESA2059.
Full textThe research work carried out in this report depicts a study of high power permanent magnet synchronous motors intended to be used in traction applications. In this context, we have realized an optimum design methodology for several drives specifications : two of them were related to high torque and low speed applications (a 17 MW motor for ship propulsion system and a classical 10kW PM machine), the third one was an electrical drive for an in-wheel motor. The design analyse procedure was formulated in form of nonlinear constrained optimisation problem. It defines the entire physical phenomenon, the variables, the constraints and the objective function. The goal thus was to elaborate various optimisation methods making it possible to fulfil the required specifications. For this, an optimisation approach based on an analytical model and a gradient method (using the CAO tool Pro@DESIGN) was adopted as a principal methodology for the study and the optimization of the considered topologies. In order to improve the optimal solution so obtained by an analytical method, we had developed a novel optimization approach by a numerical simulation technique. The idea was to have an approximation of the objective function which is intern linked to the electromagnetic characteristics and the most influential parameters of the motor structure. These steps were applied to optimize the 10 kW machine, where a 20% improvement in torque/weight ratio was obtained versus the analytical approach
Ezzat, Marwa. "Commande non linéaire sans capteur de la machine synchrone à aimants permanents." Ecole centrale de Nantes, 2011. https://tel.archives-ouvertes.fr/tel-00625786.
Full textThe permanent magnet synchronous motor when comparedto other electric machines, is very present in motion control industrial applications. This is mainly because of its compactness, low inertia, dynamics performances, robustness, power density and simplicity of operation with mechanical sensor. However, sensorless control of this machine is always a difficult problem because of the observability loss problem. The aim of this thesis is to propose control laws for mechanical sensorless permanent magnet synchronous machine. Several observers, including a two order sliding mode observer (one based on the EMF and the other based on the full model), a super-twisting observer and an adaptive observer interconnected, were developed. Several nonlinear control laws were designed: higherorder sliding mode control with pre-determined trajectory, sliding mode higher-order quasi-continuous and backstepping control. The overall stability of the whole "Command + Observer" was shown in each case. Each case has also been validated on the benchmark “Control without mechanical sensor” of the Inter-GDR group “Control of Electrical Systems”
Bergmann, Claude. "Contribution à l'étude de la commande numérique directe de moteurs synchrones à aimant : modélisation, réalisation, expérimentations." Paris 6, 1986. http://www.theses.fr/1986PA066017.
Full textMiraoui, Abdellatif. "Dimensionnement optimal d'un moteur sans balais à aimants permanents Néodyme-Fer-Bore." Besançon, 1992. http://www.theses.fr/1992BESA2048.
Full textMesso, Léonide. "Étude, modélisation et optimisation des moteurs synchrones à griffes pour l'instrumentation des tableaux de bord des véhicules automobiles." Vandoeuvre-les-Nancy, INPL, 2001. http://www.theses.fr/2001INPL021N.
Full textSoulard, Juliette. "Étude paramétrique des ensembles convertisseur machine à aimants : Application à une structure électromagnètique monophasée hybride à aimants permanents et à alimentation électronique." Paris 6, 1998. http://www.theses.fr/1998PA066343.
Full textEzzat, Marwa. "COMMANDE NON LINEAIRE SANS CAPTEUR DE LA MACHINE SYNCHRONE A AIMANTS PERMANENTS." Phd thesis, Ecole centrale de nantes - ECN, 2011. http://tel.archives-ouvertes.fr/tel-00625786.
Full textKaddouri, Azeddine. "Étude d'une commande non-linéaire adaptative d'une machine synchrone à aimants permanents." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0015/NQ56837.pdf.
Full textKhaldi, Kamel. "Machine synchrone autopilotée à aimants permanents commandée à angle de décalage constant." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376065215.
Full textKhaldi, Kamel. "Machine synchrone autopilotée à aimants permanents commandée à angle de décalage constant." Lille 1, 1987. http://www.theses.fr/1987LIL10071.
Full textTeixeira, Julio Carlos. "Étude des machines synchrones à aimants permanents fonctionnant en réduction de flux." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0074.
Full textNdiaye, Abdoul Ousmane. "Compensation active des ondulations de couple d'un moteur synchrone à aimants permanents." Besançon, 2002. http://www.theses.fr/2002BESA2038.
Full textThe work carried out in this thesis presents a method of torque ripple compensation in permanent magnets synchronous motor without polar parts. The aim is the improvement of the electromechanical conversion quality by minimizing the torque ripple and the vibrations. The thesis starts with a presentation of the torque characteristics of the studied synchronous motor and the different causes of its torque ripples. In the second chapter, a computation method of optimal current harmonics is developed : starting from the back electromotive force harmonics of a magnet synchronous motor without polar parts, a minimal number of current harmonics are calculated to cancel the torque ripple while optimizing the efficiency. The third and fourth chapters present the test bench and the experimental study of the vibrations. The bench makes it possible one the one hand to fed synchronous motor with various current waveforms using a control system realized with the dSPACE tool and on the other hand to measure the vibrations of the system (bench-motor)
Fadat, Jérôme. "Moteurs synchrones à aimants ou à réluctance variable pour l'électroménager." Montpellier 2, 2000. http://www.theses.fr/2000MON20178.
Full textGasc, Laurent Fadel Maurice. "Conception d'un actionneur à aimants permanents à faibles ondulations de couple pour assistance de direction automobile approches par la structure et par la commande /." Toulouse : INP Toulouse, 2005. http://ethesis.inp-toulouse.fr/archive/00000073.
Full textSoumare, Yaghoub. "Synthèse et organisation de nanoparticules magnétiques anisotropes par Chimie Douce : nouveaux précurseurs pour aimants permanents." Paris 7, 2008. http://www.theses.fr/2008PA077184.
Full textAnisotropic magnetic nanoparticles have been prepared via chimie douce methods by raduction of cobalt(II) and nickel(II) carboxylate precursors in basic solutions of 1,2-propanediol at 170°C using heterogeneous nucléation. With acatates as matal precursors, Co₈₀Ni₂₀ nanowires with a mean diameter of 8 nm and a mean length more than 200 nm were generated. The use of new cobalt carboxylate precursors led to Co nanorods with a mean diameter of 20 nm and a mean length of 100 nm. Moreover, the aspect ratio (mean length / mean diameter) can be tailored by modifying accurately the reaction parameters such as the nature of the metallic precursor, the basicity of the medium or the temperature rate. The metallic Co₈₀Ni₂₀ nanowires and Co nanorods crystallise mainly with the hexagonal close packed structure with the c axis the growth axis of the particle. These nanomaterials are ferromagnetic at room temperature and when aligned using an external magnetic field, their magnetic properties are considerably improved. These results prompt us to use these particles as building blocks for the preparation of a new class of permanent magnets
Kong, Li. "Contribution à la conception d'un moteur à aimants permanents du type jante et à son alimentation." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL030N.
Full textThe subject of this dissertation is the study of a pennanent magnet brushless motor and its feed. Ing inverter in the application of an electric vehicle. The different systems of electric vehicles are reviewed in the first chapter. The solution retained is an in-wheel brushless motor with pennanent magnet NdFeB. The points focused in designing a brushless motor concem the minimisation of the harmonics and the temperature influences on the magnetic characteristics of the magnet NdFeB and, therefore, on the motor. In chapter 2, the magnets are divided in some blocks and are shifted up each other along the motor axis. Based on the static torque curve, the real dimensions of the magnets and the slots and the saturation effect have been taken into account in our study. In regular shifting, the best total shifting angle does not correspond to a tooth step. The irregular shifting is approved particularly efficient even in the case of3 magnet blocks. In the third chapter, the entire B(H) curves of NdFeB is described, for all temperatures, by means of the double variables Chebychev polynomial series. These expressions are integrated in the package Flux-Expert for determining the magnetic field of the machine (in 2D) by finite elements method. This motor is especially sensible to the temperature and the armature reaction does not change greatly the working point of magnet. The two stages DC AC-AC supply inverter allows to have a soft switching in the drive system and, therefore, a limited electromagnetic pollution in the vehicle. The behaviour of this inverter is simulated, in chapter 5, by means of a program adapted from the software A TOSEC. The simulation results show that themodulation frequency for the first stage of the inverter should be in the order of 20kHz for a good current regulation. The simulation is valid for a lspeed up to 75% of its maximum under the rated eurrent and the current control remains efficient when the current is shifted from the electromagnetic force by an angle and even with the presence of toothharmonies
Jebai, Al Kassem. "Commande sans capteur des moteurs synchrones à aimants permanents par injection de signaux." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00818400.
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