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Dissertations / Theses on the topic 'Machine rotor'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Xie, Lihan. "Suivi numérique des bifurcations pour l'analyse paramétrique de la dynamique non-linéaire des rotors." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI018/document.

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Au cœur des moyens de transport, de transformation d'énergie, et de biens d'équipements, les machines tournantes peuvent avoir des comportements dynamiques complexes dus à de multiples sources de non linéarités liées aux paliers hydrodynamiques, à la présence de fissures, aux touches rotor-stator, ... Des phénomènes comme les décalages fréquentiels et donc de vitesses critiques, les cycles d'hystérésis avec sauts d'amplitudes, le changement brutal du contenu fréquentiel des réponses, sont des expressions de ces comportements. Résoudre les équations du mouvement induites par des modélisations a

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2

SEGAYER, AHMED MOHAMMED. "ROTOR STATOR CONTACT IN A ROTATING MACHINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2000. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34202@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O crescente avanço da tecnologia de equipamentos rotativos tem exigido dos projetistas de máquinas adapta-los às condições de operação mais rigorosas e, consequentemente, projetos mais sofisticados. O aumento da eficiência é frequentemente realizado por operações de minimização de folga entre os elementos rotativos e estacionários e/ou aumento da velocidade de rotação do rotor. A natureza das funções e o custo elevado dos equipamentos rotativos de alta velocidade exigem precisão e segurança no projeto para evitar riscos de operaçã

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3

Sparv, Lisa. "Cooling simulation of a BEV electrical machine rotor." Thesis, KTH, Fordonsdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302143.

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The thesis work described in this report is about simulation of the cooling of an electrical machine rotor. Limitations and simplifications were made on the CAD model of the rotor with the purpose of reducing the simulation time, for it to then be used for CFD-simulations using STAR-CCM+. This was done to see the temperature, as well as its distribution, in the model. By changing various parameters, one at the time whilst the rest were kept at their assigned standard values, the changes could be analysed and thereafter compared. The tests include smaller geometry changes, parameters of the coo

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4

Masoud, Mahmoud Ibrahim. "Decoupled control of rotor torque and rotor electric power in a salient pole, synchronous machine." Thesis, Heriot-Watt University, 2003. http://hdl.handle.net/10399/389.

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5

Wills, Dominic. "Methods to quantify and reduce rotor losses in a solid rotor yoke permanent magnet machine." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4014.

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Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Certain types of electric machines are particularly susceptible to the proliferation of eddy currents flowing within the solid conducting regions in the rotor. Single-layer, non-overlapping windings within uneven open slots are some stator properties that can produce damaging, asynchronous magnetic field harmonics which manifest in the rotor as eddy currents. The ohmic losses caused by these eddy currents are a source of inefficiency and can cause a marked increase in the temperatu

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6

Al-Amer, Itihad Abd Al-Hameed Abd. "A stable doubly-fed machine with novel rotor design." Thesis, Queen's University Belfast, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335349.

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7

Drennan, Duncan Scott. "Design of a passive rotor transverse flux rotating machine." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50313.

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Pages 6-12 missing.<br>Thesis (MScEng)--University of Stellenbosch, 2005.<br>ENGLISH ABSTRACT: The transverse flux machine (TFM) offers the opportunity of high torque to volume ratios which makes it an excellent candidate for direct wheel drives and low speed generator applications. TFMs have a three dimensional flux path which eliminates iron laminates as a viable core material. Soft magnetic composites have been adopted in these machines due to their isotropic nature. There are three main variants of TFMs, namely, active rotor (with magnets on the rotor), passive rotor (with magnets on

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8

Papini, Luca. "Performance calculation of high speed solid rotor induction machine." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/52180/.

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Solid rotor induction machines are suitable for applications which require robustness, reliability and high rotational speed. A literature review of high speed technologies is initially presented. The current limitation and challenges are detailed based on a wide collection of data. The multi-physics aspect related with electrical machines for high speed applications are discussed providing a summary of the current state of the art. The main aim of the research was to develop a multi-physic computational environment for the design and analysis of solid rotor induction machines. The electromagn

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9

Delport, Jacques. "Synchronized Measurement of Machine Rotor Angle and Its Application." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51242.

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The internal voltage angle of a generator is an important parameter that indicates the stability, both transient and steady-state, of the generator. This paper proposes a method of measuring and synchronizing the internal angle using a microprocessor and an optical encoder installed on the shaft of a generator. With a synchronized angle measurement, accurate stability studies and wide-area controls can be implemented. The experimental setup for measuring the rotor angle of a generator is explained in this work. A wide-area power system stabilizer implementing the synchronized angle measurement

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10

Wang, Hong. "MACHINE HEALTH MONITORING OF ROTOR-BEARING-GEAR TRANSMISSION SYSTEM." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1133281063.

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11

Mercier, Jean-Charles. "Contribution à l'étude par éléments finis du comportement électromagnétique des machines asynchrones rapides." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL085N.

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Dans un but d'augmenter la puissance volumique des machines électriques, et grâce au développement de l'électronique de puissance, les industriels cherchent à construire des machines à grande vitesse de rotation. Un tour d'horizon des différentes technologies envisageables pour de telles applications est présenté. Pour des raisons autant économiques que pratiques, notre choix s'est porté sur la machine asynchrone à rotor massif. L'inexistence de schéma équivalent classique et la volonté d'optimiser les paramètres géométriques du rotor imposent l'utilisation de méthodes numériques. Le calcul pa

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12

Sá, Luís Fernando Nogueira de. "Topology optimization method applied to laminar flow machine rotor design." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-16032017-103709/.

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Flow machines are very important to industry, being widely used on various processes. Performance improvements are relevant factors and can be achieved by using optimization methods, such as topology optimization. Thus, this work aims to develop a method to design radial flow machine rotors operating on laminar regime, by implementing a topology optimization formulation based on density model. The design of a rotor involves firstly modelling the fluid flow by using the Navier-Stokes equations on a rotating reference frame and using the Finite Element Method for solving the differential equatio

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13

Higgs, John. "The dynamical behaviour of damped, rotor assembly systems." Thesis, University of Wolverhampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371858.

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14

Guettafi, Amor. "Modelisation d'une generatrice asynchrone impulsionnelle a rotor discoide en acier." Paris 6, 1987. http://www.theses.fr/1987PA066072.

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15

Mazur, David Christopher. "Synchronized Rotor Angle Measurement of Synchronous Machines." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/31813.

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A key input parameter to governor feedback control and stability protection of generators is the angle of the induced voltage internal to the generator. Current practice is to estimate this value using measurements from the terminals of the generator and mathematical models. This project aims to develop a system that would directly measure the internal angle of the generator using a rotary encoder on the shaft of the machine. This document describes the theory and experimental setup of this proposed system and outlines the test procedure of experimentation.<br>Master of Science

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16

Al-Aubidy, Kasim Mousa A. "Rotor position sensing and microprocessor control of a permanent magnet machine." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257508.

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17

Bomela, Xola B. "Some design aspects of the multi flux barrier rotor reluctance synchronous machine." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51912.

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Thesis (MEng)--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: This thesis deals with different design aspects of the multi-flux barrier rotor of the reluctance synchronous machine (RSM). The effect of the different designs on the performance of the RSM is investigated by means of two-dimensional finite element analysis. The finite element analysis is also directly used in the optimum design of the rotor of the RSM. The importance of the use of the finite element analysis in the design and performance calculations of the RSM is illustrated in this thesis. The design aspects of the

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18

Geoffriault, Maud. "Réduction active des vibrations et des bruits d'une machine électrique par la stratégie de commande." Thesis, CentraleSupélec, 2015. http://www.theses.fr/2015SUPL0003/document.

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Les travaux de cette thèse s’inscrivent dans le contexte du développement de groupes motopropulseurs électriques pour véhicules automobiles. Ces développements ont mis en lumière les problématiques liées aux phénomènes acoustiques et vibratoires des machines électriques, spécifiques à l'application automobile. L'objectif de ces travaux est la mise en place de lois de commande dédiées à la réduction d'harmoniques de courant à l'origine d'harmoniques vibratoires.Pour cela, les différents éléments du système ont été modélisés, puis les paramètres du modèle électrique de la machine ont été identif

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19

Pellé, Julien. "Etude expérimentale des échanges convectifs sur le rotor d'une machine discoïde : influence d'un jet impactant." Valenciennes, 2006. https://ged.uphf.fr/nuxeo/site/esupversions/7cba07cb-e44b-4272-bc7b-ca5e2a2a403d.

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La nécessité de produire plus d’énergie électrique à un côut moindre entraîne la nécessité de produire mieux, à un rendement meilleur. Ce constat pose de multiples problèmes de refroidissement des machines électriques, notamment celles utilisées au sein des éoliennes. La méconnaissance des phénomènes qui s’y produisent et la recherche de solutions de refroidissement ont motivé cette étude. Le travail consiste en la détermination expérimentale des échanges convectifs à la surface d’un disque en rotation en régime permanent, dans trois configurations : rotor seul et système rotor-stator avec et

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20

Kremer, Mickaël. "Electromagnetic design of a disc rotor electric machine as integrated motor-generator for hybrid vehicles." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH8792/document.

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Cette thèse présente le dimensionnement d’une machine électrique à rotor disque pour la traction de véhicules hybrides. Un état de l’art complet sur les machines électriques à rotor disque permet de montrer que la machine à flux axial à rotor central est la plus adaptée. Différentes géométries du circuit magnétique sont successivement étudiées et comparées par simulations par éléments finis. Pour maximiser le rendement de la machine, les pertes d’origine électromagnétique sont étudiées. Un modèle analytique des pertes par effet de peau dans les conducteurs de cuivre est proposé et validé par é

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21

Ranft, Cornelius Jacobus Gerhardus. "Mechanical design and manufacturing of a high speed induction machine rotor / Cornelius Ranft." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4940.

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The McTronX research group at the North–West University designs and develops Active Magnetic Bearings (AMBs). The group’s focus shifted to the design and development of AMB supported drive systems. This includes the electromagnetic and mechanical design of the electric machine, AMBs, auxiliary bearings as well as the development of the control system. The research group is currently developing an AMB supported high speed Induction Machine (IM) drive system that will facilitate tests in order to verify the design capability of the group. The research presented in this thesis describes the mecha

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22

Sibande, Sguda Enock. "Rotor design and performance evaluation of a PM-assisted reluctance synchronous traction machine." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50444.

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Thesis (MScEng)--University of Stellenbosch, 2005.<br>ENGLISH ABSTRACT: The thesis describes the optimum rotor design and performance of a 110kW Permanent-Magnet assisted (PM-assisted) Reluctance Synchronous traction Machine (RSM) using bonded permanent magnet sheets. Particular attention is given to the performance of the machine drive in the flux-weakening speed region. A detail explanation is given of the finite-element design optimisation, the basic principles of operation and the control-design of the PM-assisted RSM drive. A theoretical torque comparison of the PM-assisted RSM, th

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23

Orciari, Luca. "Rotor position estimation of a bearingless permanent magnet synchronus motor by machine learning techniques." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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In this testis project, developed at the university of Bologna at LAR (Laboratory of Automation and Robotics), is studied the reconstruction of the rotor attitude of Bearingless Permanent Magnet Synchronous Motor (BPMSM), by processing the output of six hall effect sensor using a neural network to improve an already existing model-based reconstruction algorithm.

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24

Ullah, Sana. "A magnet assisted segmental rotor switched reluctance machine suitable for fault tolerant aerospace applications." Thesis, University of Newcastle upon Tyne, 2016. http://hdl.handle.net/10443/3368.

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The aerospace industry is moving towards more-electric aircraft. These electrical systems are lighter, more efficient and smaller compared to present hydraulic system. The permanent magnet electrical machine is an obvious choice to replace these hydraulic systems because of its high torque density. However for low speed applications, there are significant drag torque issues which negate some of the machine’s advantages. This thesis introduces a new permanent magnet assisted segmental rotor switched reluctance machine. This machine was first designed by using finite element software and then co

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25

Hieke, Sebastian, Mario Stamann, Dmytro Lagunov, et al. "Two-phase transverse flux machine with disc rotor for high torque low speed application." Thesis, EPE’17 ECCE Europe, 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/39783.

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This paper presents a special two-phase transverse flux machine with disc rotor. Because of the noncomplex construction and by using simple 2D flux path and 3D printing methods the manufacturing costs are hold low. A design criterion is proposed for maximizing the torque density in the low speed range. To prove the concept and analyse the potential of this construction a first direct driven prototype was built. The experimental results confirm the viability of this proposal and provide the required information for further enhancements.

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26

Le, Luong Huong Thao. "Optimal Design of Modular High Performance Brushless Wound Rotor Synchronous Machine for embedded systems." Thesis, Toulouse, INPT, 2018. http://www.theses.fr/2018INPT0111/document.

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Cette thèse est dédiée à la conception optimale de la machine synchrone à rotor bobiné modulaire sans balais pour les systèmes embarqués. Cette machine est basée sur une structure POKIPOKITM développée par Mitsubishi Electric Coopération avec les convertisseurs de puissance intégrée pour augmenter la capacité de tolérance aux défauts. L'analyse électromagnétique est utilisée pour étudier les différentes machines synchrones à rotor bobiné et donc, pour sélectionner la structure qui offre la meilleure tolérance aux défauts et les performances les plus élevées. D’abord, le choix des nombres de ph

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27

Haghgooei, Peyman. "Stratégies de commande sans capteur de courant pour une machine synchrone à rotor bobiné." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0017.

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Vu la concurrence serrée entre les fournisseurs automobiles, la réduction des coûts globaux des produits est un enjeu important. Parmi les possibilités de réduire le coût de fabrication, notamment pour les machines à courant élevé, la suppression des capteurs de courant pour le contrôle de la machine est très intéressante et avantageuse. Cette thèse se concentre sur les stratégies de commande robustes pour les systèmes d'entraînement à courant alternatif avec une réduction maximale du nombre de capteurs. En effet, cette thèse présente une stratégie de commande sans capteur de courant pour un m

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28

Gazdac, Ana Maria. "Design and control of the dual rotor permanent magnet induction machine for electric traction." Amiens, 2013. http://www.theses.fr/2013AMIE0109.

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Cette thèse propose un nouveau concept de machine électrique, la Machine Asynchrone à Aimants Permanents à double rotor dite machine hybride (MASH) comme une alternative aux machines existantes pour les applications de traction électrique. Le concept de la MASH, son principe de fonctionnement, ses avantages et inconvénients par rapport aux machines classiques ainsi que la démarche méthodologique de conception et dimensionnement sont étudiés. Deux méthodes analytiques de dimensionnement sont ainsi proposées soit pour la première basée sur la géométrie du stator (encombrement donné) soit pour la

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29

Dakel, Zaki. "Stabilité et dynamique non linéaire de rotors embarqués." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0087/document.

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Les rotors sont excités non seulement par le balourd tournant mais aussi par les différents mouvements de leur support : turbocompresseurs de véhicules, turbomoteurs aéronautiques, pompes à vide portées en sont des exemples industriels. Ainsi la conception de rotors robustes capables de bien fonctionner sous de telles conditions (excitations extrêmes) est nécessaire pour éviter des instabilités, source de défaillance catastrophique. Le présent travail a pour objectif de prévoir le comportement dynamique d’un rotor embarqué monté sur des paliers rigides ou élastiques hydrodynamiques et soumis à

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Rabbi, Ata-E. "Detection of stator interturn fault of synchronous machine by rotor current analysis : A SIMULATION APPROACH." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187654.

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One of the major electrical faults of synchronous machines is an interturn short circuit in the stator winding, due to winding insulation failure. A synchronous machine is designed to have electrical and mechanical symmetry in the stator and rotor. An interturn fault in a synchronous machine damages the symmetrical property, thereby inducing abnormal symptoms like varying torque, mechanical vibration, and deviation of stator and rotor terminal currents from their usual waveform. This last symptom is what is studied in this thesis, as an indicator of the presence of an interturn fault. An inter

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31

Staněk, Michal. "Dynamická vyvažovačka malých rotorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221148.

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Balancing of rotors is used to remove unwanted vibrations caused by uneven distribution of mass around the axis of rotation of the rotor. Operation of an unbalanced rotor may causes shortening of bearing life, fatigue of materials and deformation of shafts. This work deals with construction of a balancing machine (balancer). Because of its good properties, a soft bearing type balancer was chosen for construction. This type of balancer achieves higher sensitivity at the cost of calibration required for each type of rotor. To capture the magnitude of vibration electrodynamics sensors were chosen

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Monteiro, José Roberto Boffino de Almeida. "Transformação dq não senoidal para máquinas síncronas com imã permanente no rotor." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-24092015-135013/.

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O presente trabalho apresenta uma transformação dq não senoidal e sua aplicação em máquinas síncronas com ímã permanente na superfície do rotor (MSIP) e forma de onda de FEM não senoidal. O modelo resultante da aplicação dessa transformação permite o controle direto do torque eletromagnético, permitindo reduzir as ondulações do torque produzido nesse tipo de máquina. A redução dessas ondulações em MSIPs não senoidais possibilita que esse tipo de máquina seja empregado em aplicações onde somente MSIPs senoidais, que possuem custo mais elevado, poderiam ser usadas. Simulações e resultados prátic

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33

Anghel, Cristian. "Sensorless Flux Vector Control for a Permanent Magnet Synchronous Machine with cylindrical rotor under severe starting conditions." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0023/MQ51613.pdf.

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Chabour, Ferhat. "Commande sans capteur de position d'une machine synchrone à rotor bobiné : application à l'alterno-démarreur séparé StARS." Compiègne, 2007. http://www.theses.fr/2007COMP1705.

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La société Valeo produit pour l'industrie automobile plusieurs machines synchrones destinées à fonctionner en mode démarreur et en mode alternateur. L'une, la StARS, est un alterno-démarreur séparé (ADS) à rotor bobiné et son alimentation est de type pleine onde pilotée par un capteur de position mécanique intégré. La suppression de ce capteur, si rudimentaire soit-il, est un passage très prometteur. Outre la suppression du coût du capteur lui-même et de sa mise en place, la disparition de la connectique qui lui est associée améliore la fiabilité et la robustesse du système. L'objet de cette t

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Ghosn, Ragi. "Contrôle vectoriel de la machine asynchrone à rotor bobiné à double alimentation : optimisation des ondulateurs des puissances des onduleurs au stator et au rotor : régulation des courants au stator et au rotor : fonctionnement sans capteur de vitesse ni de position." Toulouse, INPT, 2001. http://www.theses.fr/2001INPT023H.

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Cette étude traite la machine asynchrone à double alimentation (MADA) où le stator et le stator sont alimentés chacun par un onduleur de tension. Une nouvelle stratégie de commande basée sur l'orientation du flux statorique est developpée. Les fréquences sont choisies au stator et au rotor de façon à répartir les puissances des deux côtés. Il en résulte que la puissance totale des deux convertisseurs est de l'ordre de grandeur de la puissance mécanique nominale de la machine. Cette solution est intéressante comparée aux méthodes de commande actuellement utilisée dans lesquelles cette puissance

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Tekgun, Didem. "Acoustic Noise and Vibration Reduction on Switched Reluctance Machines through Hole Placement in Stator/Rotor Laminations." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1491678743829375.

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Juliani, Aline Durrer Patelli. "Análise do campo magnético de um motor de ímã permanente no rotor utilizando o método dos elementos finitos." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-23042007-173344/.

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Neste trabalho é estudado um motor trifásico de ímã permanente no rotor, com fluxo não senoidal, através da análise do campo magnético. Essa máquina foi projetada utilizando-se a estrutura ferromagnética do estator de um motor de indução monofásico de 24 ranhuras o qual recebeu um novo enrolamento trifásico, e foi construído o rotor que é constituído de ímãs permanentes em sua superfície. Ela é aplicada em compressores herméticos de refrigeração, possibilitando o controle de velocidade e a melhoria da eficiência, quando comparada às demais máquinas utilizadas para a mesma aplicação. O estudo é

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Lefevre, Daniel. "Contribution à la modélisation et à l'asservissement de position d'un actionneur tournant-linéaire." Compiègne, 1991. http://www.theses.fr/1991COMPD414.

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L'actionneur asynchrone à deux degrés de liberté offre une alternative précise et performante pour la génération simultanée de mouvements de translation et de rotation. La simplicité mécanique, que cette solution apporte, est contrebalancée par la complexité du contrôle de la machine, puisque le rotor est massif. Une méthode permettant d'établir un schéma équivalent en régime harmonique est présentée. La déduction d'une loi de contrôle scalaire a permis de réaliser un asservissement de position, offrant une grande précision et des temps de réponse pratiquement optimaux.

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Nilsen, Åsmund Kleiva. "Design of a Permanently Magnetized Hypocycloidal Reluctance Machine : Adapting the rolling rotor concept to generator and converter operation." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14761.

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Investigations into the nature of the HRM in general, and a PMHRM-design in particular, were undertaken. Two separate simulation models, based on a magnetic equivalent circuit and FEM-model of the machine were built and used to find inductances, induced voltages and torque potential. The process of building a prototype was started and ran parallell to the theoretical studies. A CAD-model of the machine and it's parts was built up, and stator laminations and magnets were ordered. Plans for the assembly were made, and the assembly work started. Some main conclusions are:The PMHRM has a very

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Hikkaduwa, Liyanage Diana Aroshanie. "Modelling and control of a novel single phase generator based on a three phase cage rotor induction machine." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/250.

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This thesis develops the mathematical modelling and the closed loop control of a single-phase induction generator based on a three-phase cage rotor machine suitable for renewable energy conversion. Comprehensive dynamic and steady state models are developed in stationary ‘αβ’ reference frame and the accuracy is verified by comparing the theoretical results with the laboratory experimental results. Closed loop feedback regulator is designed to regulate the output voltage and frequency at the rated conditions.

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Paula, Geyverson Teixeira de. "Influência da saturação no torque da máquina síncrona de ímã permanente no rotor." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-26082013-105401/.

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O presente trabalho trata do estudo e análise da influência da saturação magnética no torque de uma máquina síncrona com ímã permanente no rotor. A máquina síncrona em es-tudo trata-se de uma máquina cuja forma de onda de força contra eletromotriz é trapezoidal. Inicialmente é feito um estudo sobre os efeitos da saturação magnética nos três principais parâmetros da máquina, indutância de fase, relutância (vista pelo circuito que tem como fonte de fluxo magnético os ímãs permanentes) e a força contra eletromotriz. Em seguida, realiza-se um estudo sobre o torque eletromagnético para a máquina e

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Chauvicourt, Fabien. "Vibro-acoustics of rotating electric machines: Prediction, Validation and Solution." Doctoral thesis, Universite Libre de Bruxelles, 2018. https://dipot.ulb.ac.be/dspace/bitstream/2013/271049/4/thesis.pdf.

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The increase of greenhouse gas emission is commonly accepted to largely contribute to global warming, in part due to the massive use of non-renewable fossil energy sources. It is a reason why recently, beside other industrial sectors, electric mobility has been considered as the next generation for transportation systems. But the electrification of a vehicle introduces new challenges in its design since it involves different domains of expertise than the ones from Internal Combustion Engine (ICE) vehicles. In particular, Noise, Vibration and Harshness (NVH) comfort is significantly affected by

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Rajabi, Moghaddam Reza. "Synchronous Reluctance Machine (SynRM) Design." Thesis, KTH, Elektrisk energiomvandling, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153663.

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The Synchronous Reluctance Motor (SynRM) has been studied. A suitable machine vector modelhas been derived. The influence of the major parameters on the motor performance has beentheoretically determined.Due to the complex rotor geometry in the SynRM, a suitable and simple combined theoretical(analytical) and finite element method has been developed to overcome the high number ofinvolved parameters by identifying some classified, meaningful, macroscopic parameters.Reducing the number of parameters effectively was one of the main goals. For this purpose,attempt has been made to find and classif

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Král, Radek. "Vysokootáčkový synchronní stroj s vnějším rotorem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442788.

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The master thesis deals with the construction and design of a high-speed synchronous machine with an outer rotor. The thesis is organised into three main chapters. The first chapter deals with machine design theory as well as mechanical limits, which are significant for high speed machines. This chapter also provides examples of applications of these electrical machines. In the second chapter, the initial design of the machine is calculated analytically. This machine design is optimised and the third chapter of this work shows the results of simulations using the finite elements method, includ

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Frias, Anthony. "Minimisation des pertes fer des machines électriques de traction par la modélisation et l'optimisation." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT028/document.

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Le coût, l'autonomie et la durée de vie sont les principaux aspects qui freine le public dans l'achat d'une voiture électrique. Tous ces aspects sont liés à la batterie qui ne permet de stocker qu'une quantité limitée d'énergie. Dans ces conditions, il est indispensable de maîtriser les pertes d'énergie de la chaîne de traction. La machine électrique étant le principal consommateur d'énergie, elle joue un rôle important dans l'efficacité énergétique globale. Dans ce contexte, comment réduire les pertes de la machine électrique pour la rendre plus efficace ? Pour répondre à cette question, l'ob

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Randewijk, Peter-Jan. "Analysis of a radial flux-air-cored permanent magnet machine with a double-sided rotor and non overlapping windings." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20246.

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Thesis (PhD)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: In this dissertation a new type of electrical machine, a Radial Flux Air-Cored Permanent Magnet machine with a Double-sided Rotor and utilising concentrated, non-overlapping windings, is proposed. The concept of the Double-sided Rotor Radial Flux Air-Cored Permanent Magnet machine, or RFAPM machine for short, was derived from the Double-sided Rotor Axial Flux Air-Cored Permanent Magnet (AFAPM) machine. One of the problems that AFAPM machines experience, is the deflection of the rotor discs due to the strong magnetic pull o

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Lu, Fei [Verfasser]. "Induction Machine Control: State Observation, Electromagnetic Analysis, Modeling for Control, Finite Element Simulation, and Rotor Temperature Estimation / Fei Lu." Düren : Shaker, 2021. http://d-nb.info/1240853866/34.

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Wang, Zhu-Yun. "Analyse et mesure de pertes dans le rotor d'une machine synchrone à aimants permanents pour en optimiser la structure." Paris 11, 2005. http://www.theses.fr/2005PA112226.

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"Cette thèse a pour l'objectif l'estimation et la réduction des pertes dans les aimants par le choix des dimensions et du nombre d'aimants dans un pôle. Pour déterminer les pertes totales par courants de Foucault dans les aimants, nous avons appliqué une triple approche : par éléments finis, par modélisation analytique et par mesures sur un montage de type éprouvette. Le modèle analytique de pertes dans le rotor permet une évaluation simple des pertes en fonction de la fréquence. Ce modèle porte le nom de " modèle parallèle ". La méthode numérique d'analyse par éléments finis est la plus préci

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Alrifai, Fayez. "Control of a brushless permanent magnet machine using an integrated torque sensor in place of a rotor position sensor." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/control-of-a-brushless-permanent-magnet-machine-using-an-integrated-torque-sensor-in-place-of-a-rotor-position-sensor(33c96f6b-f8d6-4bab-9e79-d96b975e9fa3).html.

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The work presented in this thesis proposes the use of measured torque feedback from an integrated, low cost surface acoustic wave (SAW) torque transducer in place of a position sensor to control brushless permanent magnet (BLPM) machines. The BLPM machine closed loop control requires knowledge of the rotor position to control stator current and maximum torque per ampere. The electrical position feedback to control the phase current requires a position sensor or position sensorless technique. Position sensors such as absolute encoder or resolver are needed for position information, in the absol

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Logan, Thomas George. "Harmonic analysis of the brushless doubly-fed machine including single-phase operation." Thesis, University of Cambridge, 2012. https://www.repository.cam.ac.uk/handle/1810/252277.

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