Dissertations / Theses on the topic 'Machines synchrones à double excitation'
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Hoang, Trung-Kien. "Design optimization of double excitation synchronous machines in railway traction." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN056/document.
Full textClassical electrical machines such as asynchronous and permanent magnet synchronous machines have been widely applied in traction applications and particularly in railway traction. This thesis, however, evaluate the contribution of a special class of synchronous machine called textbf{D}ouble textbf{E}xcitation textbf{S}ynchronous textbf{M}achine (DESM) for the railway traction. Double excitation term indicates that the field flux of the machine is created by two sources: excitation windings and permanent magnets. The degree of freedom provided by the excitation windings provides the opportunity to work on the energy efficiency improvement target. This thesis will try to answer the question whether DESM is more advantageous over classical machines in a specific driving cycle and in addition, in which cases a DESM performs better.Recent studies have merely optimized the individual components, the major drawback of this approach is that the combination of the best individuals does not necessarily form a best system. In order to achieve more realistic results, a multi-physic models taking into account nonlinear characteristic and various disciplines such as electromagnetic, thermal, mechanical and power electronics will be developed
Fodorean, Daniel. "Conception et réalisation d'une machine synchrone à double excitation : application à l'entraînement direct." Belfort-Montbéliard, 2005. http://www.theses.fr/2005BESA2007.
Full textThe research departments from universities and industrial companies are more and more interested in finding innovated solutions for a better energy handling. In this perspective, the double excited synchronous machines (DESM) are among the most interesting and suitable solutions. My phd work deals with the designing of a desm for electric vehicle propulsion. A desm was dimensioned, realized and tested, with a 3 times speed gain obtained – which is a good result, regarding the same type of variants founded in the literature. This work is firstly oriented on the bibliographical study dealing with the electrical vehicle problem, the main demands involved by this application and different electrical machines topologies that are best responding to these tasks. A comparative study was carried out in order to justify the desm choice in general, and the proposed desm, in particular: with series double excited circuit and the auxiliary winding placed on the rotor armature. Then, an analytical design (with reluctances circuit) was developed and a numerical analyze, by finite element method coupled with matlab/simulink, was used to validate the analytical approach. These studies were successfully utilized. Secondly, the true performances of the proposed solution were revealed by experimental measurements of the desm prototype. The stator core is taken from an induction machine of 5. 5kw, while the rotor armature is adapted to fulfill our need. The experimental results are encouraging respecting the physical parameters and the flux-weakening performances
Vido, Lionel. "Étude d'actionneurs électriques à double excitation destinés au transport : dimensionnement de structures synchrones." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2004. http://tel.archives-ouvertes.fr/tel-00133970.
Full textMangel, Hervé. "Comportement transitoire d'un alternateur à double-excitation : modélisation et contrôle." Besançon, 1995. http://www.theses.fr/1995BESA2065.
Full textThe aim of this work concerns the transient behaviour of a two-axis excitation generator. In the first chapter, the equations are written in the general case of two field windings set by an angle α (0<α<90°). When the generator is linked to a strong network, the number of the non-linear equations is great. In case of small disturbances, the system can be reduced to a four order model. The second chapter concerns the stabvility for small disturbances by use of root locus. The open-loop results show that natural frequency oscillation of a two-axis excitation generator are more important than for a classical one. It is necessary to regulate an angle to stabilize a two-axisexcitation generator. The angle between stator voltage and rotor axis has been choiced due to measurement facilities. In the third chapter, threeregulators are simulated for small disturbances. The closed-loop gains are calculated to put the poles in a restricted area for any operating point. The best regulator for any working point uses input transformation property and realises vector control by action on the angle between the position of the electromotrice force and the rotor. Measuring time are taken into account, the values of the roots when some parameters changed are discussed too. The fourth and last chapter concerns the stability in case of large disturbances like short-circuit. Some limits are introduced on the regulator. The simulation results show the generator ability to consume high reactive power even when the length of the transmission line reaches 500 km. Two generators are compared, a turbogenerator 1100 MVA rating and a 160 MVA rating. The influence of some generator parameters are discussed in the end of this chapter. A generator of medium rating power seems to be particulary well adapted
Nedjar, Boumedyen. "Modélisation basée sur la méthode des réseaux de perméances en vue de l’optimisation de machines synchrones à simple et à double excitation." Thesis, Cachan, Ecole normale supérieure, 2011. http://www.theses.fr/2011DENS0056/document.
Full textThe electric and / or hybrid driveis are an application area growing with a strong restriction in terms of congestion. This prompted the designers to create appropriate structures. Among these topologies, we find the double-excitation synchronous machine (MSDE). These machines can combine the advantages of permanent magnets machine and those of a coils excited machine.The choice of a model for these machines is an important step in the analysis, optimization and pre-sizing. This thesis presents a contribution to the modeling by magnetic equivalent circuit (MEC) of single and double excitation synchronous machines. Three parties are offered as well. The first part of the thesis presents two states of the art: one on the double-excitation synchronous machines and the other on the modeling of electrical machines, mainly in the modeling by magnetic equivalent circuit. In the second part, we discuss the 2D modeling of flux concentration permanent magnet synchronous machine taking into account the rotation and saturation. The purpose of this section is to find ways to combine both computational time and accuracy. We start by using the magnetic equivalent circuit modeling based on a mesh of the structure and each mesh is replaced by two-way reluctances, then a torque estimation are obtened by two methods flux-FMM and Maxwell stress Tensor. The second section presents a coupling between magnetic equivalent circuit and finite element method. The proposed method is to solve the two models (reluctant and finite elements) simultaneously with software EF. The coupling is performed by an equivalence between the geometric dimensions and magnetic properties of materials. The presentation of different models in terms of time-accurate calculation shows the effectiveness of the use of MEC and coupling method compared to FEM. The third part concerns the three-dimensional modeling of double excitation synchronous machines. At first, we present an adaptation of the MEC to the three-dimensional structures. Then we apply this model to the double excitation synchronous machines (DESM). The DESM with flux concentration configuration is presented. To better control the wund flux of excitation, a buried magnet homopolar machine is also studied with the same approach. Model validation is performed by finite element and experimental measurements. In the last part, a comparison between homopolar and bipolar configurations is made, then the rotor flux concentration is optimized in order to compare it to the machine magnets buried
Daanoune, Abdeljalil. "Contribution à l'étude et à l'optimisation d'une machine synchrone à double excitation pour véhicules hybrides." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT126.
Full textIn a context where the question of the environmental protection has become a major social problem, research new technologies to replace the gasoline car is a real industrial challenge. The hybrid and electric vehicles are a promising alternative to conventional vehicles. This thesis focuses on the design and optimization of electrical machines for electric and hybrid cars.In this work, we developed a new methodology for design and optimization of hybrid excitation synchronous machines. The advantage of this method is its good compromise between accuracy and computation time and its ability to be adapted to a wide range of machines. The second part of this thesis is devoted to the development of a new structure of a wound rotor synchronous machine. A novel technique for compensating the armature reaction of this machine is introduced, it involves the insertion of secondary magnets to produce a quadratic axis flux (q-axis), this latter has the function of weakening the armature reaction flux
Amara, Yacine. "Contribution à la conception et à la commande des machines synchrones à double excitation : application au véhicule hybride." Paris 11, 2001. http://www.theses.fr/2001PA112325.
Full textSynchronous double excitation machines are synchronous machines where coexist two excitation circuits, one with permanent-magnets, and the other with coiled excitation. The study of these machines showed that the double excitation makes it possible to combine the advantages of the wound field synchronous machines with those of the permanent-magnet machines. This concept allows a better design of the converter-machine set, and a better management of energy. Until now, the use of permanent magnet machines has been limited by the magnets fixed excitation flux. The constant excitation flux, in light of the constraints imposed by power electronics, does not allow machines to operate beyond a certain speed (base speed). However, flux control is possible by acting upon the component in the d-axis of the magnetic armature reaction by means of the static converter. This step is not possible if the static converter present in the conversion chain is not controlled, which reflects the case of an alternator discharging on a diode-rectifier. .
Lionel, Vido. "Étude d'actionneurs électriques à double excitation destinés au transport. Dimensionnement de structures synchrones." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2004. http://tel.archives-ouvertes.fr/tel-00477166.
Full textDaanoune, Abdeljalil. "Contribution à l'Etude et à l'Optimisation d'une Machine Synchrone à Double Excitation pour Véhicules Hybrides." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00785862.
Full textDupas, Agathe. "Modélisation et optimisation d'une machine synchrone à commutation de flux et à double excitation à bobinage global." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN037/document.
Full textIn this thesis, a new hybrid excitation, flux-switching machine is being presented. The main feature of this device is its global winding hybrid excitation with claw poles. This solution has been explored in order to reduce the copper mass and increase excitation winding efficiency. One of the most widely used alternators in automotive applications is a claw pole alternator whose claws are located on the rotor. The prototype introduced in this study is based on the same principle yet with claws located on the stator, which allows its rotor to be passive in rotating at higher speeds without slip-rings or brushes. Furthermore, the advantages of the double excitation are cumulative.The thesis will first describe the structure and operating principles of this new hybrid excitation, flux-switching machine, For example, the no-load flux linkage and the back-electromotive force on a no-load are measured and calculated;. Moreover, the load testing of this machine will be displayed. Short-circuit currents will be calculated and measured in order to determine the output power capability while operating in generator mode. The second chapter presents finite element and analytical models which allows to determine the output power capability while operating in generator mode. And with the FEA, the no-load flux linkage is investigated, This investigation serves to highlight: the influence of the stacking factor, the B-H curve definition, and the permanent magnet residual induction value, Finally, a lumped-parameter magnetic circuit model is developed and validated by 3-D finite element analysis, The model allows estimating output power of the structure when running in generator mode (with a DBR) faster than with 3D-FEA. In addition, thanks to the model the geometry is optimized for several specifications
Nedjar, Boumedyen. "Modélisation basée sur la méthode des réseaux de perméances en vue de l'optimisation de machines synchrones à simple et à double excitation." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2011. http://tel.archives-ouvertes.fr/tel-00675448.
Full textPloyard, Maxime. "Efficacité énergétique des machines de production d'électricité." Thesis, Ecole centrale de Lille, 2017. http://www.theses.fr/2017ECLI0010/document.
Full textDuring the design phase of an electrical generator, the topology is generally imposed by preliminary criteria. This thesis aims at providing a decision support for the choice of high power generator structures. The interest for high efficiency machines is driven by strong environmental objectives. Consequently, understanding the origin of losses in power generation machines is a major issue. Thus, a methodology for iron loss calculation is developed for high power generators.In the energy production and conversion sectors, Hybrid Excitation Synchronous Machines have a great potential to respond to the challenges of energy transition. It is important to quantify the impact of these new structures compared with existing solutions. This thesis proposes analytical and lumped models to design a set of generator structures. The modeling approach is also compared with two high power generators, including one for a direct drive wind turbine. Then, this modeling is used in an optimization design process. The optimal Pareto structures are compared according to different specifications. These optimized designs show significant gains compared to the existing solutions, especially on wind profile from a Weibull probability density function
Ammar, Aymen. "Modélisation et Optimisation d'un Générateur Synchrone à Double Excitation de Forte Puissance." Phd thesis, Ecole Centrale de Lille, 2013. http://tel.archives-ouvertes.fr/tel-00907699.
Full textMbayed, Rita. "Contribution à la commande d'une machine synchrone à double excitation pour des applications embarquées." Phd thesis, Université de Cergy Pontoise, 2012. http://tel.archives-ouvertes.fr/tel-00837741.
Full textMbayed, Rita. "Contribution to the Control of the Hybrid Excitation Synchronous Machine for Embedded Applications." Thesis, Cergy-Pontoise, 2012. http://www.theses.fr/2012CERG0604/document.
Full textThis thesis is a contribution to the control of the Hybrid Excitation Synchronous Machine (HESM) in embedded applications. The HESM combines the advantages of the Permanent Magnets (PM) machine and the wound rotor machine. The excitation flux in this machine is produced by two different sources: the PMs and a DC field winding that is placed at the stator to preserve a brushless structure. The latter source is used to control the flux in the air gap. The machine model is based on a Park model and takes into account the iron losses and the magnetic circuit saturation effect. The electric parameters of the laboratory prototype are identified. The machine is controlled in generator mode and motor mode. In power generation system, the study treats in particular the aircraft power supply in more electric aircrafts. Two distribution networks are studied: High voltage variable frequency network and high voltage DC network. In the latter case, the HESM is coupled to a diode bridge rectifier. In both cases, the control aims to maintain the output voltage magnitude equal to its reference via action on the field current only. The control is scalar. Simulation with Matlab/Simulink and experiments validate the approach. For the motor mode, the attention is paid to the electric propulsion in an electric vehicle. An optimal current control with minimal losses is elaborated. The copper losses are considered in a first place. Iron losses are added next. Finally, the optimization problem is extended and it includes the losses due to the inverter and the chopper. Analytical expressions of the reference armature and field currents are computed using extended Lagrange multiplier method (Kuhn-Tucker conditions). Simulation with Matlab/Simulink software proves that the analytical solution yields indeed to the current combination that guarantees the minimal losses over the New European Driving Cycle
Zhang, Jian. "Optimization design and control strategies of a double stator permanent magnet generator for tidal current energy application." Nantes, 2015. https://archive.bu.univ-nantes.fr/pollux/show/show?id=e0e1d554-0465-44bf-b0e0-bfb36f3bce35.
Full textThe work presented in this thesis concerns the study of sizing, optimization and control of double stator permanent magnet generator (DSCRPMG) system for tidal current energy application. Turbine concepts, relative projects and usual chain of tidal energy conversion are first presented. A direct drive system with fixed pitch turbine is used. The analytical model of the DSCRPMG is developed and different control strategies are tested (unity power factor control, constant flux and maximum torque per ampere control). An original approach minimizing both losses of the machine and the converter is proposed, leading to improve the system efficiency over the whole speed range (MPPT and flux weakening regions) taking into account voltage and thermal constraints. A multi-objective optimization of investment and energy extracted by the entire conversion chain is performed for an operating period of 20 years, taking into account the occurrence of the sea current speed probabilities. As a result, the double stator machine gives a clear improvement in torque density despite a slight degradation of the mass torque compared to the conventional single stator synchronous machine. Finally emphasis is placed on the control of the conversion chain under normal mode or fault conditions, particularly for open circuit fault of the outer stator. Different strategies are designed to ensure continuity of service and minimize torque ripples, showing the possibilities offered by the DSCRPMG
Merabtene, Mourad. "Modélisation dynamique et commande d'une machine synchrone double étoile alimentée par des onduleurs MLI fonctionnement en mode normal et en mode dégradé." Nantes, 2005. http://www.theses.fr/2005NANT2032.
Full textThis thesis presents the dynamic modelling in view of simulation and control of the double star salient poles synchronous machines supplied by PWM inverters. Based on the established modelling approaches, the initial machine's model, characterised by a strong coupling, is transformed on several magnetically decoupled equivalents models. These modelling approaches are extended to the functioning under fault condition of the electrical drive. Specific simulation software is developed in view to simulate and to analyse the dynamic behaviour of the inverters-machine set under balanced and unbalanced functioning. In order to minimise the torque ripples and the losses under fault condition, a control strategies are elaborated. A generalised control algorithm is proposed for the torque control in the two operating modes. The various studies were validated on an experimental prototype
Sofiane, Yamina. "Contribution à l'étude et à la modélisation d'un moteur à reluctance variable à double saillance de type pas-à-pas." Lille 1, 2001. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2001/50376-2001-313.pdf.
Full textCe modèle étant basé sur des hypothèses simplificatrices, l'amélioration de la précision nécessite l'utilisation d'approches numériques. Le modèle bidimensionnel, basé sur la méthode des éléments finis (MEF-2D), est alors appliqué à l'étude de notre structure avec et sans couplage circuit. Le convertisseur statique, ainsi que la commande, sont également pris en compte pour l'étude du système complet. D'autre part, un modèle analytique non linéaire, utilisant la notion d'inductance saturée, est introduit pour effectuer la même étude. Les résultats, obtenus par les deux approches, sont comparés. Pour tenir compte des effets d'extrémités, une modélisation 3D a été effectuée en magnétostatique. Les inductances, qui prennent, d'une manière globale, les effets des têtes de bobines, sont alors approximées et introduites dans le modèle 2D. Ce dernier modèle est ensuite utilisé pour étudier le dispositif. Les résultats, issus des trois modèles sont comparés à des essais expérimentaux réalisés sur un prototype de MRV à l'université de Dresde en Allemagne. Enfin, dans le but d'améliorer la précision, nous avons utilisé une méthode analytique, couplée à chacun des trois modèles proposés, pour quantifier les pertes fer de la structure pour différents régimes de fonctionnement
Hlioui, Sami. "Etude d'une machine synchrone à double excitation Contribution à la mise en place d'une plate-forme de logiciels en vue d'un dimensionnement optimal." Phd thesis, Université de Technologie de Belfort-Montbeliard, 2008. http://tel.archives-ouvertes.fr/tel-00344568.
Full textParmi ces structures, nous trouvons la Machine Synchrone à Aimants Permanents à Concentration de Flux et à Double Excitation (MSAPConFDE) qui fait l'objet des travaux de recherche présentés dans cette thèse réalisée dans le cadre d'une coopération interuniversitaire entre le laboratoire SET de l'Université de Technologie de Belfort-Montbéliard et le laboratoire SATIE de l'Ecole Normale Supérieure de Cachan. On s'est intéressé, en premier lieu, à l'étude par la méthode des éléments finis de cette structure. Les modèles prennent en compte l'aspect tridimensionnel de la MSAPConFDE, l'anisotropie du feuilletage et la saturation magnétique. Ils ont permis d'approfondir la compréhension des phénomènes qui régissent le fonctionnement d'une telle structure et d'analyser les différents trajets de flux. En second lieu, des modèles analytiques, basés sur la méthode des schémas réluctants, ont été établis. Les trajets de flux tridimensionnels, la saturation magnétique et les différents trajets de fuites ont été pris en compte. Finalement, ces modèles ont été exploités dans une démarche de pré-dimensionnement optimal basée sur l'algorithme génétique. Les résultats obtenus nous encouragent à enrichir l'outil de pré-dimensionnement par de nouveaux modèles de machines synchrones et par différents algorithmes d'optimisation. Ceci permettra d'aboutir vers une plate-forme de logiciels pour le pré-dimensionnement optimal des machines synchrones pour un cahier des charges donné.
Hlioui, Sami. "Étude d'une machine synchrone à double excitation : contribution à la mise en place d'une plate-forme de logiciels en vue d'un dimensionnement optimal." Besançon, 2008. http://www.theses.fr/2008BESA2030.
Full textThe work presented in this thesis is a contribution to the optimal design of a non conventional machine: Hybrid Excitation Synchronous machine (HESM) and was conducted between the SET laboratory of the UTBM and the SATIE laboratory of the ENS Cachan. The HESM has two excitation sources: one with permanent magnets in focusing configuration and a wound excitation located in the stator. Excitation coils are used to control the air gap magnetic flux generated by the permanent magnets in order either to reinforce it or weaken it. Firstly, 3D finite elements analysis was performed in order to study the impact of the main machine’s parameters on its capability of excitation flux controlling. Secondly, equivalent magnet circuit model has been established. 3D flux paths, leakage flux and saturation phenomena were taken into account. Finally, theses models were used in an optimal design process by using an evolutionary algorithm (NSGA-II) in order to optimize the studied structure for a given specification sheet
Amara, Yacine. "Modélisation pour le dimensionnement des machines électriques. Application à des machines spéciales." Habilitation à diriger des recherches, Université du Havre, 2012. http://tel.archives-ouvertes.fr/tel-00831948.
Full textRabih, Amine. "Calcul et optimisation des machines hybrides à double excitation axiale : dimensionnement et choix des aimants permanents." Vandoeuvre-les-Nancy, INPL, 1991. http://www.theses.fr/1991INPL013N.
Full textNasr, Andre. "Nouvelles structures de machines électriques pour la génération embarquée avionique." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLN065.
Full textThis work addresses the subject of the embedded electric generation in future aircraft. The main objective is to find a new electrical machine structures that can meet the new avionic requirements. We have been particularly interested in a Hybrid Excited Flux Switching machine with a Magnetic Bridge (HEFSMMB). The structure of this machine has several advantages such as static excitation sources, a passive rotor and a unique stator structure which makes it possible to have a low residual voltage, thus respecting the safety constraints. We have presented in the first chapter a state of the art on singly and doubly excited flux switching machines. We have also given the rules which define the choice of the number of stator and rotor poles. Chapter 2 was devoted to study the electromagnetic performances of the HEFSMMB using a finite element model. This model has been validated by experimental measurements carried out on a 3 kW prototype. In the final chapter, we have put in place an optimization methodology in order to improve the overall performances of the HEFSMMB and to limit its residual voltage. The optimization results showed much improved performances. It can be concluded that the MCFDEPM is a good candidate to replace the three-stage machine in future aircraft
Li, Li. "Etude et mise au point d'une nouvelle famille d'alterno-démarreur pour véhicules hybrides et électriques." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00639305.
Full textJarrot, Damien. "Contribution au développement d'outils de conception de machines synchrones à aimants permanents en vue de l'intégration convertisseur-machine : étude des machines électriques double étoile à coupleur magnétique intégré pour une application aéronautique." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/17868/1/Jarrot_Damien.pdf.
Full textRain, Xavier. "Contributions à la commande et à la conception des machines à réluctance variable à double saillance." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112170.
Full textFor electric vehicles, traction from storage battery to the wheels through the engine is the heart of the system. It regularly enjoys technological innovations making this vehicle more attractive. Currently, machines offered by manufacturers are classic, synchronous and induction machines. With complex laws, they offer good performance.However, manufacturers are exploring new unconventional machines to reduce their manufacturing cost while maintaining performance. One possible solution is the switched reluctance machine (SRM). Indeed, its design is simple and made of inexpensive materials. Its rotor completely passive gives it a very good robustness and high rotational speed required for certain compactness. However, its operation is much more complex than for other machines, it is relatively noisy and has significant torque ripple.Our work contributes to the improvement of SRM’s performance in terms of control torque characteristics and global efficiency over a large range speed. They were driven on two axes: one control axis and one design axis.To satisfy a torque control as perfect as possible, new currents controller both efficient and relatively simple to implement on software target were first presented. Then we proposed a SRM's control implementation on hardware and software targets. The objective is to maintain the performances in the case of an important sampling period, especially at high speeds. So an FPGA circuit (Fied Programmable Gate Array) was used.To improve torque characteristics depending on the speed, and global efficiency, a new SRM structure has been proposed. It is provided with an auxiliary coil creating a magnetic excitation in each phase. A study was initially conducted using simulations based on a new model. It helped to highlight the benefits of excitement compared to a conventional SRM. To validate the results, a prototype was then designed, built and tested.An important part of this work has been devoted to the implementation of experimental platforms and implementation of numerous tests to validate the theoretical developments, both in terms of control on a 8/6 SRM and design on a 6/4 SRM
Kenmoe, Fankem Éric Duckler. "Étude des différentes structures d'actionneurs de positionnement pour l'aéronautique." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0172/document.
Full textFor certain applications of positioning in embedded systems power or torque needed can be low. Actuators used for these applications can be equipped with stepper machinery such as variable reluctance machines excited (or not) or permanent magnets synchronous machine. In aeronautic these actuators should be as compact as possible and continuity of service is required. Partial or total redundancy of the actuator can ensure the continuity of service. We have studied various structures of machines particularly double channel machines for their compactness such as two channels hybrid variable reluctance machines (2C-HVRM) and double channel permanent magnets synchronous machines (DC-PMSM). In the aim of facilitating or of justifying the choice of one or the other of these structures, we have developed models of able to provide information on measurable (or non measurable) features, and the behavior of the actuators. So from a 2D finite element calculation we have developed several coupled 2D FE permeances network models of a 2C-HVRM tacking account of the magnetic saturation state of this machine and its three-dimensional character. These models were used to simulate the behavior of the actuator in different situations. Always for positioning application with low power and low speed, we sized, modeled and simulated a DC-PMSM close loop controlled. That machine is intrinsically tolerant to phase short-circuit fault, thanks to its high phase resistance
Gimeno, Anthony. "Contribution à l'étude d'alternateurs automobiles : caractérisation des pertes en vue d'un dimensionnement optimal." Compiègne, 2011. http://www.theses.fr/2011COMP1923.
Full textThe advent of more stringent anti-pollution standards and the rising of oil price, lead car manufacturers and automotive suppliers to find efficient solutions for our future. This thesis is a contribution to improving the performance of the electrical generating function in a thermal powertrain. Two approaches are considered in this work. In the first approach, a study is done on the current machine (called Lundell structure or claw pole machine). In a second approach, we design a structure abble to replace the claw pole alternator. To identify and understand the evolution of the different losses, a characterization of losses is made and a study on VDA cycle is completed. We stress the importance of iron losses in claw pole structure and thereby study the influence of various factors on its evolution. The interest of a delta conexion in terms of stator iron losses is emphasized and the impact of this current in terms of copper losses is quantified. A study is conducted over the complementarity of experimental and finite element approach on the repartition of iron losses between the stator and the rotor of this structure. Finally, the impact of the rectifier on the evolution of iron losses is studied. During this first approach, we also propose an analytical modeling of the machine and his efficiency. The second approach leads to design an hybrid structure based on a wound rotor synchronous machine with interpolar magnets. In this study, we propose a coupling between an analytical design and a finite element one through the establishment of experimental designs. This study leads to an efficiency map of the hybrid structure, highlighting its value in terms of performance relative to a claw pole machine
Bernot, Alix. "Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer." Thesis, CentraleSupélec, 2015. http://www.theses.fr/2015SUPL0025/document.
Full textThis thesis presents the study of a claw-pole transverse flux electric machine. At first, SMC material properties and transverse flux structures are studied, leading to the choice of a structure combining a claw-pole stator and a permanent magnet rotor. The machine is modelled by the means of a magnetic equivalent circuit, with a reluctance network, developed with the help of finite elements simulation. The model is then changed with the introduction of the hypothesis that the flux is bent inside the airgap; it is then validated by the test of a prototype.The architecture of the machine is optimized after a detailed analysis of the flux circulation, leading to the identification of the tooth-tip saturation issue. After finite element simulation of the improved machine, a prototype is later tested, which confirms the gain brought by the new architecture.An alternative version of the machine, with a field winding attached to the stator and a massive rotor is then proposed. This machine promises to be cost-effective to build and robust thanks to its massive rotor. An analytical model of the machine is introduced, along with a finite element simulation, to end with the test of a prototype which confirms the possibilities of this new concept. An improved version of the machine with a rotor with isolated teeth is finally studied, with an analytical model and a finite element leading to the validation of the interest of this evolution
Poure, Philippe. "Contribution à l'étude du filtrage dynamique d'un réseau électrique à l'aide d'une machine synchrone commandée par les grandeurs rotoriques." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL004N.
Full textShamsi, Nejad Mohammad Ali. "Architectures d'alimentation et de commande d'actionneurs tolérants aux défauts : régulateur de courant non linéaire à large bande passante." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL046N/document.
Full textThe objective of this work is to study different structures of supply and control of actuators for the embarked systems, motorized by permanent magnet synchronous machines (PMSM) supplied with voltage source inverters (VSI). By analyzing the advantages and the disadvantages of these structures, we choose two power segmented structures: a three-phase PMSM supplied with two three-leg VSI and a double-star PMSM supplied by two three-leg VSI. The other aspect is the fault detection and the reconfiguration of the supply and command to make possible the operation in degraded mode. For the open-circuit or short-circuit fault of an inverter switch, one or several strategies in degraded operating mode are proposed. The simulation and experimentation results validate the effectiveness of the proposed methods. The last part of this work is devoted to the study and modeling of a large band-width hybrid current controller named "modulated hysteresis". The performances of this controller are compared with the other regulators