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Artykuły w czasopismach na temat "Machine asynchrone hexaphasée"
Bessaad, Taieb, Rachid Taleb, Abdelhadi Namoune, Fayçal Chabni i Abdelkader Belboula. "Analyse du comportement d'une machine asynchrone héxaphasée : Cas du changement de l’angle de déphasage". Journal of Renewable Energies 21, nr 3 (30.09.2018): 425–32. http://dx.doi.org/10.54966/jreen.v21i3.701.
Pełny tekst źródłaRozprawy doktorskie na temat "Machine asynchrone hexaphasée"
Pantea, Alin. "Modélisation, simulation et contrôle d'une génératrice multiphasée à grand nombre de pôles pour l'éolien". Electronic Thesis or Diss., Amiens, 2017. http://www.theses.fr/2017AMIE0024.
Pełny tekst źródłaFor around 15 years, wind turbines have found a wide popularity and increase in terms of number and power per unit but they have still to deal with mechanical and electrical faults. Then, the aim of this thesis is to design, model and control a wind turbine generator that is able to cope with these problems. For this, a structure based on a squirrel cage induction machine with 6 phases and 24 poles has been studied. Indeed, by increasing the number of poles, one can simplify or eliminate the gearbox that induces many faults while a multiphase structure allows electrical energy production when several stator phases or inverter legs are lost. For this, a precise model of the generator has been developed using the equivalent intern circuits and a parameters computing strategy that allows the determination of the parameters whatever the geometrical and electrical structure of the stator has been introduced. Associated to the power converter, this model has been simulated successfully and a field oriented control has also been inserted in the whole simulation scheme. This control strategy allows tuning of the transformation matrices and also PI regulators parameters as function of the fault and therefore is robust against electrical parameters changes. Indeed, the on-line adaptation lets to reduce significantly the power ripples that appear when one or more phases are lost. To validate the proposed method that have been previously simulated, the same test have been carry out successfully on a 24 kW prototype that is a picture, at scale 1/100, of a real advanced wind turbine connected to the grid
Kianinezhad, Reza. "Contribution à la commande des machines asynchrones hexaphasées". Amiens, 2006. http://www.theses.fr/2006AMIE0602.
Pełny tekst źródłaMoghadasian, Mahmood. "Contribution à la commande intelligente des actionneurs asynchrones hexaphasés". Amiens, 2013. http://www.theses.fr/2013AMIE0111.
Pełny tekst źródłaInduction motor is most commonly used device in industrial applications, because of its simplicity, rugged construction, and relatively low manufacturing cost. However, a three-phase induction motor with three stator phases and six active switches is not robust and does not meet the safety objectives. To overcome this problem for embedded applications, new approach consists of designing six-phase induction machine (6PIM). The main advantage of this type of machine is essentially its operation in faulted mode, which corresponds to the loss of one or more phases of stator power supply. However, this critical situation causes torque ripples which greatly affect the quality of the task. The objective of this thesis is therefore to develop intelligent algorithms which can operate in healthy or faulted mode to obtain accurate positioning of 6PIM. To achieve this goal, after reviewing many nonlinear and intelligent control algorithms, we have focused our study on four robust controllers (proportional-integral, fuzzy PI, sliding mode and fractional order). The parameters of these controllers have been optimized using Particle Swarm Optimization (PSO) algorithms. The installation of the speed sensor increases the chances of fault and also the complexity of the drive system. Thus three speed estimation methods (reference model, sliding mode and extended Kalman filter) were performed to proper sensorless positioning of the 6PIM. Finally, a study was conducted on optimizing the performance of the six-phase induction machine
Alcharea, Raed. "Contribution à la commande des machines asynchrones hexaphasées en mode dégradé". Amiens, 2009. http://www.theses.fr/2009AMIE0113.
Pełny tekst źródłaThe objective of this work is to develop a digital control for six-phase induction machine (SPIM), supplied by voltage source inverter (VSI) in healthy and faulty (open phase) conditions. At first, the advantages of multiphase machines and different configurations for the disposition of windings are introduced. Then, the various defects that may be occurred in the machine and in the inverter are presented. The modeling of the machine in healthy and faulted mode (phase (s) open (s)) is then exposed. The approximate model is based on a transformation matrix to obtain a block-decoupled model for the machine. This method allows to definite the components inherent to the electromechanical conversion and the ones that generate only losses of energy. The modelling of the inverter with PWM is also discussed. The first technique studied is vector control with rotor flux orientation. Besides its application in healthy mode, a new approach was proposed in faulted mode. It consists in applying appropriate α-β current components which impose proper phase currents eliminating torque ripples. The simulation and experimentation results have shown the efficiency of the proposed method. The second strategy adopted is the direct torque control (DTC). In this study, it appears that the 6PIM is severely penalized by the relatively high currents which do not contribute to electromagnetic conversion but generate losses. A new approach was then proposed. This technique is based on the use of 14 voltage vectors (twelve active and two null). The originality of this method is that we used vectors that are exactly the same in the α-β plane while their projections on z1-z2 and z3-z4 planes give opposite vectors. The simulation results showed that the components inherent to losses are minimized. Two methods, allowing direct torque control by indirect control of the inverter, have also been studied in healthy mode and faulted mode. A first approach (DTC-PWM) allows generating any voltage vector (among 64) by means of a PWM technique. The proposed method allows the computation of the voltage vector required to control the electromagnetic torque and stator flux from the errors of these quantities. The second approach (DTC-Deadbeat) aims at computing an average stator voltage control vector in order to control the mean values of the stator flux and the electromagnetic torque over a sampling period
Fnaiech, Mohamed Amine. "Commandes non-linéaires et intelligentes pour le positionnement précis des machines hexaphasées". Amiens, 2009. http://www.theses.fr/2009AMIE0115.
Pełny tekst źródłaSecuring electric drives used in industry is a very interest area today and the induction machine, known for its legendary strength, could be an answer to this problem. However, a three-phase induction machine with three stator phases and six active switches, is unsatisfactory because it does not meet safety goals set. To overcome this problem for embedded applications, new work consists in designing a Six Phase Induction Machine (6PIM). The main advantage of this type of machine is essentially functioning in faulted mode, which corresponds to the loss of one or more supply phases. However, this critical situation induces torque ripples that affect significantly the quality of the task. The objective of this thesis is therefore to design nonlinear and intelligent algorithms which can operate in safe mode or in faulted mode. For this and after reviewing many nonlinear and intelligent control laws, we have focused our study on variable structure control and fuzzy logic control. Both techniques are known for their robustness and their low computation requirements. Both algorithms were used to achieve precise positioning regardless of the mechanical load driven and in the cases of phase losses. Note that these algorithms have been inserted into the inner and the external loop. After being compared with a conventional PID controller, these two intelligent algorithms have been successfully implemented on a test bed developed in the laboratory
Taherzadeh, Mehdi. "Contribution to Fault Tolerant Control of Six-Phase Induction Generators". Thesis, Amiens, 2015. http://www.theses.fr/2015AMIE0014.
Pełny tekst źródłaThree-phase induction machines are limited to operate in open-phase conditions in both motor and generator operating modes. Indeed, after losing one of the machine’s phases with an isolated neutral point, the two remaining phases cannot be controlled independently and the machine has to be stopped. Contrary to three-phase machines, the multiphase ones use more than three phase in the stator and thus they can operate even in phase missing conditions with a minimum de-rating. Nevertheless, for a multiphase generator, the extracted power from the machine is associated with oscillations due to the open-phase creation. In addition, the used variables in control system oscillate in these conditions as well. The goal of this thesis is therefore to design a general control system for a squirrel cage six-phase induction generator (SC6PIG) in both healthy and faulty operations. The general control system consists of ten sub control systems which are designed for all possible open-phase faults of the SC6PIG up to three-opened phases. They have been designed regarding the faulty model of the SC6PIG to eliminate the power oscillations in faulted mode. An open-phase detection and operating decider system have been introduced to switch a control system to a new one during the motion. It has been shown that the switching between two different control systems creates a transient voltage in switching instant. In order to minimize the transient voltages, on-line initial condition setting has been proposed for the ten control systems. The proposed strategy has been checked by simulation and experimentation tests on a SC6PIG rated at 90 W. They have confirmed the capacities of the proposed strategy
Taherzadeh, Mehdi. "Contribution to Fault Tolerant Control of Six-Phase Induction Generators". Electronic Thesis or Diss., Amiens, 2015. http://www.theses.fr/2015AMIE0014.
Pełny tekst źródłaThree-phase induction machines are limited to operate in open-phase conditions in both motor and generator operating modes. Indeed, after losing one of the machine’s phases with an isolated neutral point, the two remaining phases cannot be controlled independently and the machine has to be stopped. Contrary to three-phase machines, the multiphase ones use more than three phase in the stator and thus they can operate even in phase missing conditions with a minimum de-rating. Nevertheless, for a multiphase generator, the extracted power from the machine is associated with oscillations due to the open-phase creation. In addition, the used variables in control system oscillate in these conditions as well. The goal of this thesis is therefore to design a general control system for a squirrel cage six-phase induction generator (SC6PIG) in both healthy and faulty operations. The general control system consists of ten sub control systems which are designed for all possible open-phase faults of the SC6PIG up to three-opened phases. They have been designed regarding the faulty model of the SC6PIG to eliminate the power oscillations in faulted mode. An open-phase detection and operating decider system have been introduced to switch a control system to a new one during the motion. It has been shown that the switching between two different control systems creates a transient voltage in switching instant. In order to minimize the transient voltages, on-line initial condition setting has been proposed for the ten control systems. The proposed strategy has been checked by simulation and experimentation tests on a SC6PIG rated at 90 W. They have confirmed the capacities of the proposed strategy
Semail, Eric. "OUTILS ET MÉTHODOLOGIE D'ÉTUDE DES SYSTÈMES ÉLECTRIQUES POLYPHASÉS. GÉNÉRALISATION DE LA MÉTHODE DES VECTEURS D'ESPACE". Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2000. http://tel.archives-ouvertes.fr/tel-00266256.
Pełny tekst źródłaTout d'abord, on caractérise les modulateurs d'énergie indépendamment de leurs charges. Pour cela des espaces vectoriels leur sont associés ainsi que des familles de vecteurs qui les caractérisent. Il est possible alors de définir quel type de charge le modulateur est capable de contrôler. Les degrés de liberté de la commande trouvent également une formulation mathématique. Les exemples traités sont les onduleurs de tension monophasé et triphasé deux niveaux. L'approche conduit, dans le cas d'une commande aux valeurs moyennes, à un calcul original des durées de conduction des interrupteurs en utilisant la notion de barycentre. Les algorithmes obtenus, généralisables aux onduleurs à n bras, comportent un nombre réduit d'opérations logiques et arithmétiques.
Le formalisme est ensuite appliqué à la machine asynchrone triphasée avec q barres au rotor ; ceci nous permet d'expliciter la notion de rotor diphasé équivalent. La machine asynchrone pentaphasée est également modélisée et l'approche développée met en évidence les conditions que doit remplir l'onduleur à 5 bras pour l'alimenter correctement.
Dans la dernière partie, un onduleur de courant à Modulation de Largeur d'Impulsions est étudié à l'aide du formalisme. Les non-linéarités de la commande sont prises en compte vectoriellement, notamment, de façon originale, celle concernant la durée minimale de conduction des interrupteurs. On décrit enfin l'implantation matérielle de cette commande sur microcontrôleur 16 bits et présente les résultats expérimentaux dans le cas d'une charge constituée d'une machine asynchrone triphasée en parallèle avec des condensateurs.