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Ahmed, Adeeb. "Maximum Torque per Ampere (MTPA) Control for Permanent Magnet Synchronous Machine Drive System." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1375726072.
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MADASCHI, Matteo Giacomo. "Design and implementation of guidance control system for autonomous light electric vehicles." Doctoral thesis, Università degli studi di Bergamo, 2013. http://hdl.handle.net/10446/28965.
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In this work; a light AGV is presented. Light AGVs are usually designed to move small payloads and their distinctive feature is their high flexibility and re-configurability in the load handling. However; they have usually limited load weight capacity. In fact; large load weight values have a high impact on the guidance performances; even affecting the vehicle mechanical stability and strong speed limitations are usually applied.
We will focus our attention to the vehicle guidance control problem and aim to design controllers that guarantees desirable specifications for a wide range of possible load mass values (from 50kg to 1000kg). Hence; we assume that the payload mass is an uncertainty in the model and resort to robust control design methods. Moreover; we'd like not only to find a single suitable controller but to analyze the stability domain in the controller parameter space; so that we can evaluate the effects on the guidance performances produced by changes in the controller parameters; preserving control system stability. In order to obtain such results we will pay special attention to randomized techniques.
Randomized techniques are oriented to deal with basic notions for any engineering characteristics – gain or phase margin; overshoot or other time-response characteristics; robustness margin – as well as mathematical objectives such as H2 or Hinf norm.
Specifically; randomized method are applied to the tuning of PI controllers; taking into account control action limitations; due to the limited current supply values; system speed specifications; defined by desired values for settling time; Hinf performances.
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Shah, Dhruv. "Sensorless control of permanent magnet synchronous motor." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112040.
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Nous proposons dans ces travaux, une solution aux problèmes de longue date posés par le control sans capteur d’une machine électrique. Cette solution consiste à élaborer un contrôleur asymptotiquement stable qui régule la vitesse du moteur en mesurant uniquement les coordonnées électriques. Nous l’avons appliqué à un moteur synchrone à aimant permanent non saillant, perturbé par un couple de charge constant non connu. Le schéma proposé est un observateur non linéaire d’ordre 4, basé sur le control qui ne dépend pas d’opérations non robustes intrinsèques au système, comme l’intégration de boucle ouverte à un système dynamique et ce schéma peut être facilement intégrée en temps réel. Le contrôleur est facile à commander par l’ajustement du gain qui détermine directement le taux de convergence de la position et de la vitesse et charge le couple d’observateurs. Les simulations et les résultats expérimentaux mettent en évidences les bonnes performances ainsi que la robustesse des paramètres d’incertitudes du schéma que nous proposons. La comparaison par simulation avec un contrôleur sans capteur à champ orienté présenté récemment dans la littérature, a également été effectuée. La thèse se termine par des remarques de conclusion et des propositions de sujet de recherche s’inscrivant dans la continuité de ces travauxA solution to the longstanding problem of sensorless control of an electrical machine is provided in this work. That is, the construction of an asymptotically stable controller that regulates the mechanical speed of the motor, measuring only the electrical coordinates. The result is presented for a non-salient permanent magnet synchronous motor perturbed by an unknown constant load torque. The proposed scheme is a fourth order nonlinear observer-based controller that does not rely on-intrinsically nonrobust-operations like open-loop integration of the systems dynamical model nor signal differentiation, and can be easily implemented in real time. The controller is easy to commission, with the tuning gains directly determining the convergence rates of the position, speed and load torque observers. Simulation and experimental results that illustrate the good performance, as well as the robustness to parameter uncertainty, of the scheme are presented. A simulated comparison with a sensorless field-oriented controller, recently proposed in the drives literature, is also carried out. The thesis is closed with some concluding remarks and some potential research topics generated from this work
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Elhangari, Abdelbaset K. Tahir. "Sliding-Mode Control of the Permanent Magnet Synchronous Motor (PMSM)." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1386173503.
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Abou, Qamar Nezar Yehya. "SUPPRESSION OF HARMONIC TORQUE AND HARMONIC CURRENT IN PERMANENT MAGNET SYNCHRONOUS MOTOR." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/dissertations/1522.
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In this dissertation harmonic current, harmonic torque originated at the load and harmonic torque originated at the motor, where modeled and treated via closed loop control. The dissertation propose a remedy for cancelling harmonic current by placing the proposed adaptive feedforward controller (AFC) in parallel with the FOC current control. Similarly, harmonic torque load was cancelled by proposing an AFC in parallel with the speed control loop. Harmonic torque originated in the motor mainly due to harmonic flux where cancelled through the estimation of harmonic flux, which was achieved by a novel Minimal Parameter Harmonic Flux Estimator (MPHFE). The latter is formulated such that the inductance, resistance, and stator current and its derivative are not necessary for the estimation of the harmonic eflux. This was achieved by forcing the harmonic current induced by the harmonic flux component to zero through the combined action of a Field-Oriented Controller (FOC) and a feed-forward controller. Subsequently, the harmonic flux can be obtained directly from the estimated harmonic back-EMF without the involvement of other motor parameters. Finally, the estimated flux is used in conjunction with a comprehensive analysis of the motor harmonic torque to determine the stator current compensation to eliminate the torque harmonic. A systematic approach to assign the parameter of the AFC controller were developed in this dissertation. Furthermore, multiple experiments were conducted to demonstrate the efficacy of the proposed control schemes harmonics.
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Monajemy, Ramin. "Control Strategies and Parameter Compensation for Permanent Magnet Synchronous Motor Drives." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/11247.
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Variable speed motor drives are being rapidly deployed for a vast range of applications in order to increase efficiency and to allow for a higher level of control over the system. One of the important areas within the field of variable speed motor drives is the system's operational boundary. Presently, the operational boundaries of variable speed motor drives are set based on the operational boundaries of single speed motors, i.e. by limiting current and power to rated values. This results in under-utilization of the system, and places the motor at risk of excessive power losses. The constant power loss (CPL) concept is introduced in this dissertation as the correct basis for setting and analyzing the operational boundary of variable speed motor drives. The control and dynamics of the permanent magnet synchronous motor (PMSM) drive operating with CPL are proposed and analyzed. An innovative implementation scheme of the proposed method is developed. It is shown that application of the CPL control system to existing systems results in faster dynamics and higher utilization of the system. The performance of a motor drive with different control strategies is analyzed and compared based on the CPL concept. Such knowledge allows for choosing the control strategy that optimizes a motor drive for a particular application. Derivations for maximum speed, maximum current requirements, maximum torque and other performance indices, are presented based on the CPL concept. High performance drives require linearity in torque control for the full range of operating speed. An analysis of concurrent flux weakening and linear torque control for PMSM is presented, and implementation strategies are developed for this purpose. Implementation strategies that compensate for the variation of machine parameters are also introduced. A new normalization technique is introduced that significantly simplifies the analysis and simulation of a PMSM drive's performance. The concepts presented in this dissertation can be applied to all other types of machines used in high performance applications. Experimental work in support of the key claims of this dissertation is provided.Ph. D.
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Dever, Timothy P. "Direct Torque Control of Resonant Inverter Driven Permanent Magnet Synchronous Motor." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1586426523199448.
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Ozturk, Salih Baris. "Direct torque control of permanent magnet synchronous motors with non-sinusoidal back-EMF." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2728.
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Ichikawa, Shinji, Mutuwo Tomita, Shinji Doki, and Shigeru Okuma. "Sensorless Control of Permanent-Magnet Synchronous Motors Using Online Parameter Identification Based on System Identification Theory." IEEE, 2006. http://hdl.handle.net/2237/9622.
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Liu, Tianyi. "Control strategy for a mono-inverter multi-PMSM system - Stability and efficiency." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19624/7/tianyi_liu.pdf.
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During these decades, Permanent Magnet Synchronous Motor (PMSM) has become a vital part of military, industry and civil applications due to the advantages of high power density, high efficiency, high reliability and simple structure, small volume and light weight. Sometimes, multiple PMSMs are used to carry out cooperative functions. For example, the bogie of a locomotive, the flight control surface of an airplane. These PMSMs usually operates at the same speed. To reduce the volume and weight, an idea of sharing the static power conversion devices, which is called Mono-Inverter Multi-PMSM system (MIMPMSM), is raised. Although many researchers have given different controller solutions for the MIMPMSM system, most of them are not clear in the aspects of system stability and efficiency issues. This has become the biggest obstacle to the practical use of MIMPMSM. Oriented with these problems, starting with a MIMPMSM system with 2 motors, in the first step, we have tested some control strategies by an experiment to verify the feasibility and performance of them. In final, based on the experiment data, we have figured that the overconstraint problem exists in some control strategies. Then, an analysis and controller design based on steady-state model of a Mono-Inverter Dual-PMSM (MIDPMSM) system is carried out.By studying the solution existence problem of the steady-state model, we give out the design guideline to the controller structure. Combining the open-loop stability and steady-state solution, the region of controllability and stability is obtained. Lagrange Multiplier is used develop theexpression of efficiency-optimal steady-staterelated to torque and speed. The experiment has shown that the efficiency of the new controller has improved significantly. Meanwhile, we have explored the influence of parameter variation in system stability and efficiency-optimization. The variation will influence the stability region. But its influence can be eliminated by using Master- Slave strategy. On the other hand, in the aspect of efficiency optimization, the simulation results have shown that parameter mismatch, especially the permeant flux, can cause high efficiency loss. In the last step, this controller is also adapted to a MIMPMSM system with more than two motors. The simulation results demonstrate the effectiveness.
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Aboelhassan, Mustafa Osman Elrayah. "Robustní řízení synchronního stroje s permanentními magnety a spínaným tokem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233605.
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Je jasné, že nejúspěšnější konstrukce zahrnuje postup vícefázového řízení, ve kterém každá fáze může být považována za samostatný modul. Provoz kterékoliv z jednotek musí mít minimální vliv na ostatní, a to tak, že v případě selhání jedné jednotky ostatní mohou být v provozu neovlivněny. Modulární řešení vyžaduje minimální elektrické, magnetické a tepelné ovlivnění mezi fázemi řízení (měniče). Synchronní stroje s pulzním tokem a permanentními magnety se jeví jako atraktivní typ stroje, jejíž přednostmi jsou vysoký kroutící moment, jednoduchá a robustní konstrukce rotoru a skutečnost, že permanentní magnety i cívky jsou umístěny společně na statoru. FS-PMSM jsou poměrně nové typy střídavého stroje stator-permanentní magnet, které představují významné přednosti na rozdíl od konvenčních rotorů - velký kroutící moment, vysoký točivý moment, v podstatě sinusové zpětné EMF křivky, zároveň kompaktní a robustní konstrukce díky umístění magnetů a vinutí kotvy na statoru. Srovnání výsledků mezi FS-PMSM a klasickými motory na povrchu upevněnými PM (SPM) se stejnými parametry ukazuje, že FS-PMSM vykazuje větší vzduchové mezery hustoty toku, vyšší točivý moment na ztráty v mědi, ale také vyšší pulzaci díky reluktančnímu momentu. Pro stroje buzené permanentními magnety se jedná o tradiční rozpor mezi požadavkem na vysoký kroutící moment pod základní rychlostí (oblast konstantního momentu) a provozem nad základní rychlostí (oblast konstantního výkonu), zejména pro aplikace v hybridních vozidlech. Je předložena nová topologie synchronního stroje s permanentními magnety a spínaným tokem odolného proti poruchám, která je schopná provozu během vinutí naprázdno a zkratovaného vinutí i poruchách měniče. Schéma je založeno na dvojitě vinutém motoru napájeném ze dvou oddělených vektorově řízených napěťových zdrojů. Vinutí jsou uspořádána takovým způsobem, aby tvořila dvě nezávislé a oddělené sady. Simulace a experimentální výzkum zpřesní výkon během obou scénářů jak za normálního provozu, tak za poruch včetně zkratových závad a ukáží robustnost pohonu za těchto podmínek. Tato práce byla publikována v deseti konferenčních příspěvcích, dvou časopisech a knižní kapitole, kde byly představeny jak topologie pohonu a aplikovaná řídící schémata, tak analýzy jeho schopnosti odolávat poruchám.
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Meinguet, Fabien. "Fault-tolerant permanent-magnet synchronous machine drives: fault detection and isolation, control reconfiguration and design considerations." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209757.
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The need for efficiency, reliability and continuous operation has lead over the years to the development of fault-tolerant electrical drives for various industrial purposes and for transport applications. Permanent-magnet synchronous machines have also been gaining interest due to their high torque-to-mass ratio and high efficiency, which make them a very good candidate to reduce the weight and volume of the equipment.In this work, a multidisciplinary approach for the design of fault-tolerant permanent-magnet synchronous machine drives is presented.
The drive components are described, including the electrical machine, the IGBT-based two-level inverter, the capacitors, the sensors, the controller, the electrical source and interfaces. A literature review of the failure mechanisms and of the reliability model of most of these components is performed. This allows understanding how to take benefit of the redundancy generally introduced in fault-tolerant systems.
A necessary step towards fault tolerance is the modelling of the electrical drive, both in healthy and faulty operations. A general model of multi-phase machines (with a number of phases equal to or larger than three) and associated converters is proposed. Next, control algorithms for multi-phase machines are derived. The impact of a closed-loop controller upon the occurrence of faults is also examined through simulation analysis and verified by experimental results.
Condition monitoring of electrical machines has expanded these last decades. New techniques relying on various measurements have emerged, which allow a better planning of maintenance operations and an optimization of the uptime of electrical machines. Regarding drives, a number of sensors are inherently present for control and basic protection functions. The utilization of these sensors for advanced condition monitoring is thus particularly interesting since they are available at no cost.
A novel fault detection and isolation scheme based on the available measurements (phase currents, DC-link voltage and mechanical position) is developed and validated experimentally. Change-detection algorithms are used for this purpose. Special attention is paid to sensor faults as well, what avoids diagnosis errors.
Fault-tolerant control can be implemented with passive and active approaches. The former consists in deriving a control scheme that gives acceptable performance for all operating conditions, including faulty conditions. The latter consists in applying dedicated solutions upon the occurrence of faults, i.e. by reconfiguring the control. Both approaches are investigated and implemented.
Finally, design considerations are discussed throughout the thesis. The advantages and drawbacks of various topologies are analyzed, which eventually leads to the design of a five-phase fault-tolerant permanent-magnet synchronous machine.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
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Ozturk, Salih Baris. "Modelling, simulation and analysis of low-cost direct torque control of PMSM using hall-effect sensors." Thesis, Texas A&M University, 2005. http://hdl.handle.net/1969.1/4905.
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This thesis focuses on the development of a novel Direct Torque Control (DTC) scheme for permanent magnet (PM) synchronous motors (surface and interior types) in the constant torque region with the help of cost-effective hall-effect sensors. This method requires no DC-link sensing, which is a mandatory matter in the conventional DTC drives, therefore it reduces the cost of a conventional DTC of a permanent magnet (PM) synchronous motor and also removes common problems including; resistance change effect, low speed and integration drift. Conventional DTC drives require at least one DC-link voltage sensor (or two on the motor terminals) and two current sensors because of the necessary estimation of position, speed, torque, and stator flux in the stationary reference frame. Unlike the conventional DTC drive, the proposed method uses the rotor reference frame because the rotor position is provided by the three hall-effect sensors and does not require expensive voltage sensors. Moreover, the proposed algorithm takes the acceleration and deceleration of the motor and torque disturbances into account to improve the speed and torque responses. The basic theory of operation for the proposed topology is presented. A mathematical model for the proposed DTC of the PMSM topology is developed. A simulation program written in MATLAB/SIMULINKî is used to verify the basic operation (performance) of the proposed topology. The mathematical model is capable of simulating the steady-state, as well as dynamic response even under heavy load conditions (e.g. transient load torque at ramp up). It is believed that the proposed system offers a reliable and low-cost solution for the emerging market of DTC for PMSM drives. Finally the proposed drive, considering the constant torque region operation, is applied to the agitation part of a laundry washing machine (operating in constant torque region) for speed performance comparison with the current low-cost agitation cycle speed control technique used by washing machine companies around the world.
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Andrich, Roberto. "Desenvolvimento de uma plataforma para avaliação de desempenho de estratégias de acionamento de motores usados em produtos da linha branca." Universidade do Estado de Santa Catarina, 2013. http://tede.udesc.br/handle/handle/1870.
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Previous issue date: 2013-08-28Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
In this work is presented the development of an experimental setup and a simulation plataform for the evaluation of performance in permanent magnet synchronous motors when drived with di_erent control strategies. The proposal of the experimental setup is to allow the driving and analysis of these types of motors with the main control strategies used in their applications in a easy and didactic way. The control strategies implemented are the well known Six-step technic for BLDC type motor, that is, motors having trapezoidal back-emf voltages, the classical Field Oriented Control for BLAC type motors, that is, motors having sinusoidal back-emf voltages and a modified field oriented control specially developed for non-sinusoidal back-emf voltage motors. The proposal of the simulation plataform is to estimate the results obtained in the experimental bench. This is done by implementing the same control strategies in the simulation bench and also by modelling the main losses in the driving inverter and motor.
Nesse trabalho é apresentado o desenvolvimento de uma Plataforma Experimental e de uma Plataforma de Simulação para a avaliação de desempenho em motores síncronos com ímãs permanentes quando acionados com diferentes estratégias de controle. A proposta da plataforma experimental é permitir o acionamento e a análise desses motores com as principais estratégias de controle utilizadas em suas aplicações de forma prática e didática. As estratégias implementadas são o controle Six-step para motores do tipo BLDC, ou seja, com tensões induzidas trapezoidais, o controle vetorial para motores do tipo BLAC, ou seja, com tensões induzidas senoidais e uma proposta de modificação no controle vetorial para o acionamento de motores com tensões induzidas não senoidais. A plataforma de simulação tem por objetivo estimar a priori os resultados obtidos na plataforma experimental através da implementação das mesmas estratégias de controle e do modelamento das principais perdas existentes no inversor e no motor
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Gabbi, Thieli Smidt. "CONTROLE POR MODOS DESLIZANTES E OBSERVADOR DE DISTÚRBIOS APLICADOS AO MOTOR SÍNCRONO DE ÍMÃS PERMANENTES." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/8567.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis master thesis proposes a current control technique based on sliding mode strategy and disturbance observer for high-performance drive applied to permanent magnet synchronous motors and can be extended to other systems. The combination of sliding mode control and disturbance observer applied to the current control presents the characteristics necessary to minimize the coupling between the axes, rejection of external disturbances and parametric variations. A continuous time control scheme is developed, the stability proofs are performed from the Lyapunov analysis. The performance of the propose technique is evaluates through simulation results. Moreover, this master thesis presents a discrete-time sliding mode controller combined with a discrete-time disturbance observer. The development in discrete-time enables the implementation in digital processors. The conditions of reach of the proposed controller considering the transport delay of digital implementation are still evaluated. The stability proofs of the proposed scheme are presented. Simulation results are shown. In addition, it is developed an experimental platform for drive and control of the permanent magnet synchronous motor in which the experimental results are obtained.
Esta dissertação propõe uma técnica de controle de corrente baseada na estratégia por modos deslizantes e observador de distúrbios para acionamento de alto desempenho aplicada a motores síncronos de ímãs permanentes, podendo ser estendida a outros sistemas. A combinação do controle por modos deslizantes e do observador de distúrbio aplicada ao controle de corrente apresenta as características necessárias para minimização do acoplamento existente entre os eixos, rejeição a distúrbios externos e variações paramétricas. É desenvolvido um esquema de controle em tempo contínuo, são apresentadas as provas de estabilidade a partir de critério de Lyapunov. O desempenho da técnica proposta é avaliado através de resultados de simulação. Além disso, é apresentado um controlador por modos deslizantes associado ao observador de distúrbio em tempo discreto. O desenvolvimento em tempo discreto possibilita a implementação em processadores digitais de sinais. Ainda são avaliadas as condições de alcance do controlador proposto considerando o atraso de transporte da implementação digital. Provas de estabilidade do esquema proposto e resultados de simulação são apresentados. Este trabalho faz o desenvolvimento de uma bancada experimental para o acionamento e controle do motor síncrono de ímãs permanentes na qual são obtidos os resultados experimentais apresentados.
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Otava, Lukáš. "Algoritmy monitorování a diagnostiky pohonů se synchronními motory." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-447552.
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Permanent magnet synchronous machine drives are used more often. Although, synchronous machines drive also suffer from possible faults. This thesis is focused on the detection of the three-phase synchronous motor winding faults and the detection of the drive control loop sensors' faults. Firstly, a model of the faulty winding of the motor is presented. Effects of the inter-turn short fault were analyzed. The model was experimentally verified by fault emulation on the test bench with an industrial synchronous motor. Inter-turn short fault detection algorithms are summarized. Three existing conventional winding fault methods based on signal processing of the stator voltage and stator current residuals were verified. Three new winding fault detection methods were developed by the author. These methods use a modified motor model and the extended Kalman filter state estimator. Practical implementation of the algorithms on a microcontroller is described and experimental results show the performance of the presented algorithms in different scenarios on test bench measurements. Highly related motor control loop sensors fault detection algorithms are also described. These algorithms are complementary to winding fault algorithms. The decision mechanism integrates outputs of sensor and winding fault detection algorithms and provides an overall drive fault diagnosis concept.
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Lacroix, Samantha. "Modélisation et commande d’une chaine de conversion pour véhicule électrique intégrant la fonction de charge des batteries." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112074/document.
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Le développement des véhicules hybrides et électriques s’est intensifié ces dernières années, face aux problématiques environnementales et économiques. Afin que les performances de ces derniers soient comparables à celle d’un véhicule à moteur thermique, de nombreuses avancées technologiques sont indispensables. Le déploiement de véhicule entièrement à traction électrique, ne serait être réalisable, sans des infrastructures de recharge adaptées. Cette thèse constitue une contribution à l’étude d’un chargeur de batteries intégré au véhicule électrique, dans le cadre du projet SOFRACI.L'architecture de ce chargeur entièrement réversible sert également pour la traction du véhicule. L’utilisation de tous les éléments y compris le moteur de traction pour les deux fonctions, réduit l’encombrement et le coût de la structure. L’objectif principal consiste à modéliser le système de conversion alternatif-continu du chargeur et à établir les lois de commandes.Lors de la première phase de l’étude, une attention particulière a été portée à l’utilisation des enroulements de la machine en tant qu’inductance de filtrage du convertisseur. Un modèle correspondant à ce fonctionnement a été obtenu et a permis de mettre en évidence un couplage magnétique existant entre les diverses phases.En s’appuyant sur les modèles obtenues, la seconde étape a consisté à définir les stratégies de commande. Deux méthodes ont été employées. La première, par le biais d’une transformation a permis de se ramener dans un repère, où la majorité des termes de couplage ont été éliminés. Pour l’autre méthode, tous les éléments du couplage ont été considérés. Pour chacune de ces stratégies, des correcteurs PI et RST fondés sur le placement de pôles robustes ont été dimensionnés pour garantir la stabilité du système.Une part importante du travail a été consacrée à la réalisation d’un banc d’essai expérimental reconstituant la conversion alternative-continue. Compte tenu des différences de dynamiques des grandeurs asservies, une carte FPGA et un processeur ont été utilisés. L’exploitation de ce moyen d’essai a permis de comparer et de valider les lois de commande développéesEnvironmental constraints and reduction of fossil fuels resources have led industrials and laboratories to search for alternative solutions in the transportation domain. For the last few years, several vehicles or planes functions have been gradually electrified, up to their complete electrification. This thesis presents an AC/DC converter integrated in an Electric Vehicle (EV) for the charger application. The conversion is realized by using the electric traction powertrain, in order to reduce the global cost and increase compactness where a specific motor has been design.During the first phase of the study, a model of the motor used as filtering inductances has been obtained and allowed to highlight an existing magnetic coupling between the motor’s phases.The second step was to define control strategies. Two methods were used. The first one, by a transformation allowed eliminating the majority of the coupling term. In the other method, all coupling elements have been considered. For each strategies, IP and RST controllers based on robust pole placement were designed to ensure system stability.An important part of the work was devoted to the realization of an experimental test bench for AC-DC conversion. A FPGA and a processor were used for control implementation. The control laws has been compared and validated thanks to the experimental platform
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Khlaief, Amor. "Contribution à la commande vectorielle sans capteur mécanique des machines synchrones à aimants permanents (MSAP)." Phd thesis, Aix-Marseille Université, 2012. http://tel.archives-ouvertes.fr/tel-00814276.
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Ce travail de recherche s'intéresse à la commande sans capteur mécanique du moteur synchrone à aimants permanents (MSAP) à pôles saillants, particulièrement en basse vitesse, avec détection de la position initiale du rotor. Après une présentation des techniques et approches qui ont initié nos travaux, en terme d'estimation de la vitesse et/ou de la position, nous avons choisi celles qui présentent plus d'intérêt de point de vue stabilité, robustesse, précision et simplicité d'implémentation. La première approche est basée sur le Système Adaptatif avec Modèle de Référence (MRAS). Quant à la deuxième, elle est réalisée autour d'un observateur non-linéaire pour l'estimation de la position et de la vitesse du MSAP à pôles saillants. Les deux techniques d'observation de la vitesse sont associées à une commande par orientation du flux rotorique avec la technique MLI vectorielle. Pour détecter la position initiale du rotor, nous avons utilisé une nouvelle approche qui permet d'estimer cette position avec une incertitude de 5° mécanique. Cette nouvelle approche est basée sur l'application de signaux tests aux bornes des phases statoriques du MSAP. Des résultats de simulation et expérimentaux sont présentés tout au long de ces travaux pour valider les études théoriques de la commande vectorielle sans capteur mécanique du MSAP. Enfin, nous avons étudié et analysé les performances de la commande tolérante aux défauts sans capteur mécanique du MSAP en présence de défaillances de types transistors à l'état-off. Les résultats expérimentaux obtenus avec les deux approches d'estimation de la vitesse en utilisant l'observateur MRAS et un observateur non linéaire ont permis d'améliorer la fiabilité du système de manière à rendre possible la commande vectorielle sans capteur mécanique en mode dégradé (alimentation avec deux bras de l'onduleur). En effet, les résultats de la commande sans capteur mécanique de la MSAP en mode dégradé montrent que l'observateur non linéaire est le mieux adapté pour ce type de fonctionnement car il présente de faible ondulation du couple et de vitesse. A l'aide d'un banc d'essais que nous avons développé au laboratoire LSIS-pôle Ecole Centrale de Marseille (ECM), nous avons pu valider expérimentalement les différentes approches proposées dans ce travail de recherche. Les résultats obtenus montrent l'efficacité des techniques mises en œuvre pour la commande vectorielle sans capteur mécanique du MSAP à pôle saillant en termes de robustesse, stabilité, précision et rapidité.
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Miranda, Guevara Francisco Javier de. "Controlo de um motor síncrono baseado em FPGA." Master's thesis, 2015. http://hdl.handle.net/1822/51281.
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Dissertação de mestrado integrado em Engenharia Eletrónica Industrial e de ComputadoresO acionamento de motores elétricos por conversores eletrónicos é uma solução relativamente nova, embora utilizada na indústria desde o seu aparecimento devido às suas características. Ainda assim, há muito por ser feito, estudado e compreendido em tais aplicações. O trabalho aqui aprestado tem a ver com o estudo de técnicas de controlo para acionamento de motores elétricos, avaliando ao mesmo tempo as vantagens que a tecnologia das FPGA (Field Programmable Gate Array) pode aportar para este tipo de aplicações de eletrónica de potência. No início da dissertação é feito um estudo das FPGAs, surgindo deste estudo uma análise do conjunto de vantagens e desvantagens que estas apresentam. Acompanhando o estudo das FPGAs, numa fase posterior estudou-se o software de desenvolvimento de programas para este tipo de plataformas, que foi criado pela mesma empresa que desenvolve o kit utilizado, o “Spartan-3E FPGA Starter Kit Board” da Xilinx. Para avaliar as mais-valias da FPGA, a solução desenvolvida foi utilizada no sistema de controlo de um motor elétrico síncrono de ímanes permanentes (PMSM) destinado a aplicações de mobilidade elétrica. Previamente foram estudadas as estratégias de controlo mais adequadas neste contexto, tendo-se optado pelo comando do motor através de um inversor fonte de tensão com controlo de corrente. Para avaliar o sistema projetado foram efetuadas simulações no software PSIM, uma ferramenta para simulação de circuitos eletrónicos, especialmente dedicada à área da eletrónica de potência. Para comprovar os resultados obtidos na simulação foi desenvolvido e testado um protótipo composto pelo inversor de potência, motor síncrono de ímanes permanentes e o sistema de controlo baseado na FPGA.
The use of electronic converters in electric motor drives is a relatively new solution, although it is widely used in industry for quite some time. Even so, there is much to be done and known in such applications. The work described here has to do with the study of control techniques for electric motors drives, while evaluating the advantages that the technology of FPGA (Field Programmable Gate Array) can add to this type of power electronics applications. At the beginning of the work a study of FPGAs is done, emerging from this study an analysis of the set of advantages and disadvantages that they present. Following the study of FPGAs, at a later stage, the software development tools for this type of platform were studied, which were created by the same company that developed the kit used, the "Spartan-3E FPGA Starter Kit Board" Xilinx. To assess the added value of the FPGA, the developed solution was used in the control system of a permanent magnets synchronous electric motor (PMSM) for electric mobility applications. Previously the most appropriate control strategies were studied, having opted to drive the motor control through a voltage source inverter with current control. To evaluate the designed system, simulations were made in PSIM, a software tool for simulation of electronic circuits, especially dedicated to the power electronics area. To check the results obtained in the simulations, a prototype was developed and tested, consisting of a power inverter, a synchronous permanent magnet motor and a control system based on a FPGA.
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Lien, En-Kai, and 連恩凱. "Current Control of Permanent Magnet Synchronous Motor." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/95415898618142334794.
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碩士明志科技大學
機電工程研究所
96
In this thesis, current control of a sensorless three-phase permanent magnet synchronous motor (PMSM) without position sensors is proposed. The implementation of the motor drive is accomplished as well. First of all, the model of the PMSM is derived to decouple the current components aligned with the stator flux and the one with the electromagnetic torque. Some coordinate transformations and principles about pulse width modulations are introduced. Finally, the implementation of the current control for a PMSM are illustrated. After the proposed current control scheme was applied to a 300 W 3-phase PMSM, the experimental results show a steady-state speed error below 0.1﹪when the motor is operated below base speed under the rated load. In addition, the fast tracking characteristic of the motor system is demonstrated. These facts show that the current control method proposed in this thesis merits applications in the industry.
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Hsu, Kuo-Hsuan, and 徐國軒. "The Implementation of DSP-based Permanent Magnet Synchronous Motor Current Control by Variable Structure Control." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/01623169620128361120.
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碩士國立勤益科技大學
電機工程系
103
In this dissertation, we use the TMS320F2808 digital signal processor (DSP) produced by Texas Instruments (TI) to the realization of Permanent Magnet Synchronous Motor (PMSM) current and velocity control. F2808 DSP is with the 32-bit fixed-point CPU. The control software is programmed by C language in TI Code Composer Studio 3.3 console. Also, a robust controller which is designed by employing Variable Structure Control (VSC) is presented for the proposed current control system. Both of the simulation and experimental results show that the performances with the VSC controller are guaranteed.
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Liao, Yuan-Kai, and 廖元楷. "Development of Position Sensorless Drive for Permanent-Magnet Synchronous Motor Using Division-Summation Current Control." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8cdx57.
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Wang, Po-Nien, and 汪柏年. "Current Loop Control of a Permanent Magnet Synchronous Motor Using Fuzzy Integral Sliding Mode Controller." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/80609415103601338358.
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碩士國立成功大學
電機工程學系碩博士班
97
The Sliding Mode Control (SMC) has been widely adopted in control system of Permanent Magnet Synchronous Motors (PMSM) because of its robustness to change in system parameters, good disturbance rejection ability and fast velocity response. However, because the control condition is switched regularly, the chattering phenomenon occurs at the same time in which it may damage the hardware. Therefore, this thesis employs the fuzzy integral sliding mode control method to adaptively adjust the value of control gain so that the system state can not only reach the sliding surface quickly but also eliminate the chattering phenomenon. In order to control the output torque of PMSM, the current control loop is indispensable. Generally, a rapid dynamic response without steady state error is the goal in current loop control design. Most current loop control approaches have to transform three-phase axis into d-q axis. However coordinate transformation will lead to a longer computation time, in which it is not suitable for implementing the current loop control using a cost effective microcontroller. In order to cope with this problem, this thesis uses the fuzzy integral sliding control to implement the current loop control of PMSM in three-phase axis. The proposed approach does not need coordinate transformation and its control performance is satisfactory.
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Huang, Han-wei, and 黃漢威. "Integration of a New Current Control Method with the Position Sensorless Control of the Permanent-Magnet Synchronous Motor." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/45mgza.
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碩士國立中正大學
電機工程研究所
103
This thesis is referring to design a sensorless control for a Permanent Magnet Synchronous Motor (PMSM). The main structure includes a PMSM, a three-phase three-wire inverter, an auxiliary circuit and the peripheral circuits of the micro-controller. This research combines high frequency injection and extended-EMF to achieve position sensorless control. High frequency injection is adopted to estimate the rotor speed and the rotor position by this thesis. It is suitable for the motor at black start and low speed. When the motor attains steady speeds, the driver will switch to the extended-EMFestimatorto drive motor to high speeds. The Space Vector Pulse Width Modulation (SVPWM) is implemented in this thesis for division-summation (D-Σ) current control. All the controls are accomplished via the micro-controller.
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Wei, Hsiao-Tse, and 魏孝哲. "Current Harmonics Mitigation Control Strategy for Six-arm Inverter with Three-phase Permanent-magnet Synchronous Motor Drives." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/7mu3nm.
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博士國立臺灣科技大學
電機工程系
103
This dissertation focuses on development of low-torque ripple and high stability with a six-arm inverter for three-phase permanent-magnet synchronous motor (PMSM) drives. In this structure, the power circuit uses six-arm three-phase inverter. Each phase of the PMSM is operating independently to raise the utilization factor of dc-link voltage. By using zero-sequence current estimator, it calculates the content of third-harmonic in current. These calculated results can be used to eliminate the third-harmonic of current. When a winding of three-phase PMSM breaks down, the other two winding currents will be corrected to result in a 60-degree angle difference. The component which can suppress the third-harmonic of current was injected into healthy phases to eliminate currents harmonics, thereby reducing torque ripple. In this dissertation, Matlab/Simulink is used to simulate the proposed PMSM system. Performances with different current control and current harmonics mitigation control strategies for PMSM operated under normal and post-fault conditions are compared. This control method could be used to implementation of system. A prototype PMSM system was built with TMS302F28335 digital signal processor. And the program was completed by C language. Under the normal operation of the system, the third-harmonic of current decreases from 28.71% to 3.05%. The peak current required for system falls from 1.212 pu to approximately 1.017 pu. The current of zero-axis decreases from 0.256 pu to 0.021 pu. When the phase a open-circuit is in fault condition, the third-harmonic of current in phase b decreases from 7.00% to 1.36%. The third-harmonic of current in phase c decreases from 9.91% to 3.06%. The third-harmonic of current in zero-axis falls from 25.19 pu to 2.19 pu. The electromagnetic torque ripple decreases from 85.57% to 2.85%.The proposed system performance is thus verified experimentally.
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Lourde, R. Mary. "Design And Analysis Of Digital Controllers For High Performance Sensorless PMSM Servo Drives." Thesis, 1997. http://etd.iisc.ernet.in/handle/2005/1788.
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Peixoto, Hugo Manuel de Carvalho Oliveira. "Controlador com FPGA para um motor-in-wheel CA de fluxo axial." Master's thesis, 2013. http://hdl.handle.net/1822/39843.
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Dissertação de mestrado integrado em Engenharia Eletrónica Industrial e de ComputadoresCom o aumento da preocupação com o meio ambiente, os veículos com tração elétrica têm vindo a ser alvo de investigação e desenvolvimento por vários investigadores e fabricantes de veículos de todo o mundo, pois a energia elétrica pode ter origem em fontes renováveis e, além disso, os veículos elétricos são muito eficientes, podendo até aproveitar a energia cinética excedente do seu movimento, durante desacelerações, travagens e descidas. Nesta dissertação são apresentados os principais sistemas de tração elétrica utilizados em veículos elétricos, bem como os elementos básicos que os constituem, como os sistemas de armazenamento de energia e os diferentes tipos de motores utilizados na tração. É dada ênfase aos motores trifásicos de Corrente Alternada (CA) de fluxo axial, utilizados em configurações motor-in-wheel, uma vez que este é o tipo de motor utilizado nesta dissertação. Os principais sistemas de controlo para este tipo de motores também são apresentados. Como os algoritmos de controlo para máquinas elétricas vão evoluindo ao longo do tempo e vão exigindo maiores capacidades de processamento, os dispositivos digitais que os processam têm que ser mais rápidos e têm que possuir mais recursos disponíveis. Os FPGAs (Field Programmable Gate Array) são dispositivos digitais com enorme capacidade de processamento e grande flexibilidade em termos de recursos, pelo que são uma boa solução para processar algoritmos que exijam grandes capacidades de processamento. Nesta dissertação encontra-se descrito um algoritmo de controlo FOC (Field-Oriented Control) com modelador SVM (Space Vector Modulation), para motores elétricos do tipo PMSM (Permanent Magnet Synchronous Machine), implementado num FPGA utilizando linguagem Verilog. O algoritmo implementado permite controlar a velocidade do motor. No final da dissertação são mostradas algumas estatísticas do controlador implementado (tempo/ciclos de processamento e recursos do FPGA utilizados). Também é feita uma breve descrição do hardware utilizado no sistema de controlo do motor, baseado num VSI (Voltage Source Inverter), e são apresentados alguns resultados de simulação do sistema de controlo, obtidos com o software PSIM. Por fim, são mostrados alguns resultados experimentais de testes efetuados ao sistema de controlo, como a resposta a variações da velocidade angular de referência e a variações de carga aplicada ao motor, e algumas formas de onda das correntes de fase e tensões de alimentação do motor, com este a operar em regime permanente.
With the increasing concern with the environment, the vehicles with electric traction have been the target of research and development by many researchers and vehicle manufacturers all around the world, because the electric energy can be derived from renewable sources and, in addition, the electric vehicles are very efficient and can even take the surplus kinetic energy of its movement, during decelerations, brakings and downhills. This MSc master thesis presents the main electric traction systems for electric vehicles, as well as the basic elements that constitute them, such as energy storage systems and the different types of motors used in electric traction. It is given focus to the three-phase axial flux AC (Alternated Current) motors used in motor-in-wheel configurations, since it is the type of motor used in this master thesis. There are also presented the main control systems for this type of motors. Since the control algorithms for electrical machines are improving over time and increasingly requiring higher processing power, the digital devices that process those algorithms need to be faster and need to have more available resources. FPGAs (Field Programmable Gate Array) are digital devices with high processing power and great flexibility in terms of resources, so they are a good solution to process algorithms that require high processing capabilities. On this master thesis is described a FOC (Field-Oriented Control) algorithm for electric motors of the type PMSM (Permanent Magnet Synchronous Machine), implemented in FPGA using Verilog language. The implemented algorithm allows to control the motor speed. At the end of this document are shown some statistics of the implemented controller (time/processing cycles and used resources from the FPGA). It is also made a brief description of the hardware used for the control system of the motor, based on a VSI (Voltage Source Inverter), and are presented some simulation results of the control system, obtained with the use of PSIM software. Finally, are shown some experimental results of tests performed to the control system, such as the response to variations of the angular velocity reference and variations of the load applied to the motor, and some waveforms of phase currents and supply voltages applied to the motor with this operating in steady state.