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Дисертації з теми "Moteur haute vitesse":
Lapôtre, Blaise. "Modélisation des moteurs auto-lévités haute vitesse à aimants permanents en vue de leur conception, alimentation et commande." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0323.
The thesis deals with an alternate solution mixing the functions of an electric motor and active magnetic bearing with the same device. A spectral magnetic models taking into account the different flux density harmonics and their sources are developed. The interaction of different space harmonics of the air-gap flux density is highlighted and modeled in order to evaluate their contributions to the levitation force and its ripples. These models allow the magnetic design of bearingless machines. In order to supply and control such machines, a specific lumped circuit model is developed. This study allows to design the optimal winding which minimizes the constraints on the converter. Finally, a specific prototype is designed and manufactured in order to validate theoretic results provided during this thesis
Zheng, Zedong. "Commande à haute performance et sans capteur mécanique du moteur synchrone à aimants permanents." Phd thesis, Toulouse, INPT, 2008. http://oatao.univ-toulouse.fr/7740/1/zheng.pdf.
Neurouth, Adrien. "Etude de la performance énergetique d’une transmission de puissance haute vitesse." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI017/document.
A way to improve both electric and hybrid vehicles is to use high speed motors, operating over than 42.000rpm. The goal is to increase the power density and the efficiency of powertrains. Using these new motors, new gearboxes should be developed. This must be done without generating significant additional cost regarding already mastered low speed solutions. High energy performance level also has to be maintained. This PhD comes before the design phase of a high-speed oil bath lubricated gearbox. It aims to identify the warm-up and power loss problems, and propose ways to improve efficiency. This work proposes a thermomechanical modelling of the gearbox’s first stage, using the thermal network method. This model links power losses with temperatures. Particular attention is paid to high speed bearing modelling. A new thermomechanical model of rolling element bearing is developed. As churning losses being significant at high speeds, a method to greatly reduce this power loss is characterized
El, Hassan Ismail. "Commande haute performance d'un moteur asynchrone sans capteur de vitesse par contrôle direct du couple : filtrage de Kalman étendu du vecteur d'état : contrôle de la fréquence de commutation de l'onduleur." Toulouse, INPT, 1999. http://www.theses.fr/1999INPT009H.
Dubas, Frédéric. "CONCEPTION D'UN MOTEUR RAPIDE À AIMANTS PERMANENTS POUR L'ENTRAÎNEMENT DE COMPRESSEURS DE PILES À COMBUSTIBLE." Phd thesis, Université de Franche-Comté, 2006. http://tel.archives-ouvertes.fr/tel-00352970.
L'objectif consiste maintenant à orienter les recherches vers les actionneurs à vitesse élevée. Une application importante concerne l'entraînement de compresseurs pour le système PAC. Des études menées au L2ES ont montré que les turbocompresseurs constituaient une solution intéressante pour limiter la taille et la puissance absorbée.
Nous proposons dans cette thèse de mettre au point une méthodologie de conception de MSAPs montés en surface à vitesse élevée en vue de leur optimisation en prenant en considération les contraintes magnétiques, électriques et thermiques. Cette méthodologie prend en compte des contraintes spécifiques de la grande vitesse, et notamment les pertes électromagnétiques dans la partie tournante induites par la fréquence élevée d'alimentation. Les pertes magnétiques dans l'induit denté créées par une aimantation radiale ou parallèle des aimants permanents sont également modélisées. En effet, deux modèles analytiques complexes (magnétostatique et magnétodynamique) ont été développés pour prédire ces pertes fer significatives dans les MSAPs sans pièces polaires à inducteur intérieur ou extérieur. La méthode est générale, parce qu'elle est basée sur le calcul de champ électromagnétique bidimensionnel (2D) en coordonnées polaires (résolution des équations de Laplace/Poisson/Diffusion). L'analyse prend en compte les notions de courbures, les harmoniques de temps et d'espace de la répartition des courants de l'induit produite par un bobinage quelconque, l'effet du champ de réaction d'induit par courant de Foucault, et enfin différentes configurations de bobinages statoriques ("généralisation" des bobinages) ainsi que deux types d'aimantation (radiale et parallèle). L'hypothèse principale consiste dans le fait que l'on néglige la variation de perméance due au stator denté. Les contraintes mécaniques ont été traitées en liaison avec le mécanicien de la société NOVELTE Système de Belfort (90).
La MSAP réalisée tourne à 10 000 tr/min avec un résolveur analogique "sin-cos" à aimants permanents constitué de capteurs à effet Hall. Le moteur construit servira de base de validation dans la zone de vitesse concernée (i.e., de 0 à 10 000 tr/min).
Picard, Mathieu. "Dynamique des gaz et combustion du Rim-Rotor Rotary Ramjet Engine (R4E)." Mémoire, Université de Sherbrooke, 2011. http://savoirs.usherbrooke.ca/handle/11143/1607.
Parrang, Sylvain. "Prédiction du niveau de bruit aéroacoustique d'une machine haute vitesse à reluctance variable." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN044/document.
Due to its simple construction and robustness, Switched Reluctance Machine (SRM) is well suited for high rotation rates. SRM applications are however quite rare mainly because of the high level of noise this machine produces. First, this work aims to describe the noise emmitted by the studied SRM at high rotation rates. In accordance with the common understanding, it was proven that noise emitted by high rotation rates SRM is dominated by aeroacoustic noise. The aeroacoustic noise consists of the whole soundemission comig out of aerodynamic phenoma located in the air gap of the machine. Chapter two is concerned with the implementation of an estimation method for aeroacoustic noise level dedicated to the studied SRM. Aeroacoustic noise for electrical machines has not been quantitatively studied yet. Conversely, studies about aeroacoustic noise of rotating machinery (turboreactor, fan, ...) is quite abundant in the litterature. Consequently, this study focuses onrotating machinery to build an aeroacoustic noise estimation method for SRM. This estimationtool is based on a Computational Fluid Dynamics (CFD) calculation of the turbulent ow in theair gap. Estimated noise levels are then compared with experimental data. Emitted noise level is estimated and measured for two distinct rotor geometries over a wide range of rotation rates. Calculation assumptions are validated by the consistency between experimental and numerical results. Asexpected, the 2D CFD simulation brings an over estimation of noise level. Finally, the fourth chapter deals with the use of the aeroacoustic noise estimation tool to study the influence of geometrical parameters of a SRM on its noise emission level
Gilson, Adrien. "Modélisation et conception des machines haute vitesse pour la turbocompression assistée électriquement." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD003.
In the automotive industry, regulations to limit the emission of greenhouse gases have become more and more severe. This trend is not going to change and solutions must be found to improve the efficiency of internal combustion engines (ICE) that drive the majority of passenger cars in the world.Turbochargers are a clever solution to improve the thermodynamic efficiency of the ICE. This forced induction device increases the air pressure in the cylinders and therefore the engine torque. However, turbochargers have a major disadvantage for the driver experience: a lag time (turbo lag) between the moment when the driver steps on the accelerator and the moment when torque is available.To overcome this problem, an electric machine can be used to assist the turbocharger during the speed up phase. This machine can be a part of an independent system of air compression and placed upstream of the turbocharger or it can be integrated directly into the turbocharger. In both cases, the response time of the turbocharger is greatly reduced which directly impacts the dynamic of the vehicle and the driving pleasure. The integration of the electric machine directly on the turbocharger allows its operation as a generator to improve the overall efficiency of the ICE.The subject of this thesis is the modeling and design of high speed electric machines for these applications. The main requirements are:-High-speed operation: between 70,000 and 150,000 rpm and peripheral speeds around 150 m/s.-Power density: from 3 to 15 kW for compact machines that will have to be integrated under the hood of the vehicle.-High efficiency: around 95 % and above.-A design adapted to mass production for the automotive industry.To cope with this requirements, the following tasks were undertaken:Firstly, we modeled the electromagnetic and mechanical behaviors of high-speed slotted electric machines with surface-mounted permanent magnets. For the electromagnetic part, we developed a subdomain calculation model. For the mechanical part, we worked on a multilayer model to evaluate the rotor strength at high speed.Secondly, we used finite element analysis methods to explore different machine structures. We compared several topologies of slotted and slotless machines, with tooth-coil winding and toroidal winding. This parametric study allowed us to compare the torque density and efficiency of these machines.Finally, we dealt with the case of prototyping and measurements of these machines. Based on the previous studies, we prototyped three machines with promising performances. The mechanical design of the different machines is discussed as well as the measurement methods and the difficulties associated with high speed characterization.During this thesis work, other aspects were also discussed such as the losses in power converters driving high-speed electric machines, rotor dynamics and acoustic emissions
Chebak, Ahmed. "Modélisation, conception et optimisation des machines sans encoches à aimants permanents à haute vitesse." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29808/29808.pdf.
This research work presents the development of a design methodology with global optimization of high-speed permanent-magnet slotless synchronous machines using soft magnetic composite materials (SMC) in the stator and retaining sleeves in the rotor that can be conductive. This methodology takes into account the different constraints imposed by the high speed such as the eddy currents induced in the massive parts, the losses, the converter-machine interactions and the mechanical stress in rotor. A generic design tool is developed for different slotless machines structures used as motors or generators and coupled to different kind of static power converters with voltage or current commutation. It uses a design model based on analytical prediction of the two-dimensional magnetic field by a harmonic resolution of Maxwell equations taking into account the eddy currents induced in the conductive parts. This model includes an equivalent electric model of the converter-machine system and a detailed losses calculation model validated by 2D finite element analysis. Experimental validation of magnetic losses in the SMC stator is also performed. The design model is associated to an optimization procedure and an iterative correction mechanism performed by 3D finite element simulations to take into account the influence of end-effects on the SMC stator eddy current losses. When the machine is coupled to a current static converter, another correction mechanism is used in order to resolve the strong coupling between the machine and its converter. The developed modeling and design tools are used to design and compare different slotless machines topologies for specific requirements. Various feasibility and sensitivity studies are also performed.
Cuenot, Jérémy. "Architectures d'alimentation et de commande des actionneurs haute-vitesse connectés aux réseaux avioniques à tension variable." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0263/document.
The main technological revolution of the new aircrafts is based on intensive electrification of many components of the aircraft. Moreover, the speed of electrical generators is no longer fixed but variable. This new way of generating electrical power generates voltage variations on DC networks. Besides, to increase the compactness of the Permanent Magnet Synchronous Machines (PMSM) at a given power, their mechanical speed is increased as much as possible by combining them with mechanical reducers for certain applications. The variation of the voltage level of the DC bus supplying a high-speed PMSM implies its sizing in order to ensure its controllability over the entire speed range which carries significant stresses on the Voltage Source Inverter (VSI). To solve this problem, one solution consists in adding an extra DC / DC converter between the input filter and the VSI to maintain the inverter input voltage at a value adapted to the operating point of the PMSM and to optimize its dimensioning. However, this solution increases the order of the system, which increases the complexity of its control, accentuated by the constraints related to the high-frequency nature of the PMSMs considered. The work carried out in this thesis concerns the study, the optimization and the control of the power supply architecture of the high-speed actuators connected to variable-voltage avionic DC networks. As a result, for the avionics applications considered, these power supply architectures integrating an additional DC / DC converter make it possible to reduce the mass and the volume of the power supply structure without degrading the overall efficiency of the conversion chain, in particular by using the impedance-source converters which allow to cancel the DC input current ripples. In addition, Pulse Amplitude Modulation (PAM) control strategies used with non-linear control architectures (flatness, passivity) make it possible to control these high-speed PMSMs while ensuring their stability over the entire operating range