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Dissertations / Theses on the topic 'Traction electric motor'

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Published: 4 June 2025

Last updated: 15 July 2025

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BONERA, EMANUELE. "Electric traction for a multi-motor vehicle: Research for active safety and energy efficiency." Doctoral thesis, Università degli studi di Brescia, 2022. http://hdl.handle.net/11379/563082.

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Lo scopo di questa ricerca è quello di studiare la trazione elettrica multi motore che è già applicata con successo su alcune auto sportive di alto livello completamente elettriche. Oltre ai ben noti vantaggi dei gruppi motopropulsori elettrici in termini di impatto ambientale, essi sono caratterizzati da una curva di coppia che, in applicazioni automobilistiche, offre ampie opportunità per un migliore controllo dinamico dei veicoli e sicurezza attiva. È anche possibile personalizzare la risposta del veicolo agli input del conducente in base alle esigenze del guidatore ed alle condizioni ambientali, che è già un trend di mercato molto attuale ma che i propulsori tradizionali consentono in modo limitato. La sicurezza attiva per i veicoli di produzione stradale è in continuo sviluppo per prevenire gli incidenti e rendere più sicure le auto di tutti i giorni perché in Europa, Stati Uniti e Giappone gli incidenti stradali sono ancora la prima causa di morte per i giovani. Il cosiddetto torque vectoring (TV), attraverso l'applicazione di diverse forze di trazione su ogni ruota, può creare un momento di imbardata attivo in grado di influenzare le dinamiche del veicolo, rendendolo quindi più sicuro. D'altra parte, il livello sempre elevato di emissioni e la bassa efficienza tipica dei motori termici sta spingendo il mondo dell'automobile verso l'elettrificazione, secondo un processo che ora sembra ben definito da oggi al 2035. È possibile vedere un grande potenziale nell'integrazione di queste due esigenze, sicurezza ed elettrificazione, sfruttando le migliori opportunità di controllo offerte dai motori elettrici attraverso la creazione di una centralina di controllo veicolo (VCU) con tutti i sistemi di sicurezza direttamente implementati nelle logiche di controllo dei motori elettrici. Le prime applicazioni potrebbero essere su supercar elettriche multi-motore, particolarmente complesse, perché le dinamiche dei propulsori innovativi possono essere percepite come non così divertenti da guidare o addirittura frustranti dagli appassionati di auto o persino dall'utente quotidiano. Gli aspetti emotivi non dovrebbero essere ignorati in quanto possono letteralmente guidare il potenziale cliente nel complesso processo di scelta di un'auto nuova, giocando così un ruolo importante nel marketing. Infine, sono stati studiati gli effetti dello stato di carica (SoC) e i fattori ambientali sulle prestazioni delle batterie. Fissare la missione del veicolo è essenziale per essere in grado di dimensionare correttamente la batteria. L'autonomia di un veicolo elettrico è fortemente influenzata dalla strategia rigenerativa in frenata, dalle caratteristiche tecniche come potenza installata, massa, rapporto di trasmissione, dalla distribuzione della trazione tra anteriore e posteriore ma anche dai parametri che cambiano durante il movimento della vettura come la resistenza aerodinamica, la temperatura delle batterie… È quindi fondamentale effettuare una serie di analisi di sensibilità per aiutare gli ingegneri a trovare il miglior compromesso tra tutte le variabili coinvolte e valutare la fattibilità delle strategie di controllo per promuovere il risparmio energetico o le prestazioni a seconda delle esigenze del conducente. La ricerca prevede un approccio interdisciplinare perché coinvolge aspetti tipici della dinamica del veicolo, sicurezza attiva, strategie di controllo, implementazione di motori elettrici e anche una correlazione soggettivo-oggettiva rispetto alla percezione del conducente. The aim of this research is to investigate multi motor electric traction which is already successfully applied on some full electric high level sports cars. Beyond the well-known benefits of electric powertrains in terms of environmental impact, the peculiar torque curve of electric motors for automotive applications offers extensive opportunities for improved vehicle dynamics control and active safety. It is also possible to customize the response of the vehicle to the driver’s inputs according to his needs and depending on the environmental conditions, which is already a very current market trend but that traditional powertrains allow in a limited way. Active safety for road production cars is in continuous development in order to prevent accidents and make everyday cars safer because in Europe, USA and Japan road accidents are still the leading cause of death for young people. The so called torque vectoring (TV), through the application of different tractive forces on each wheel, can create an active yaw moment able to influence the vehicle dynamics, hence making it safer. On the other hand, the ever-high level of emissions and the low efficiency typical of thermal engines is pushing the world of the automobile towards electrification, according to a process that now seems well defined from today to 2035. It is possible to see a great potential in the integration of these two needs, safety and electrification, taking advantage of the better control opportunities offered by electric motors: The creation of a Vehicle Control Unit (VCU) with all safety systems directly implemented in the control logics of electric motors. The first applications could be on multi-motor electric supercars that are particularly complex because the dynamics of innovative powertrains can be perceived as not-so-fun-to-drive or even frustrating by car enthusiasts or even by the daily user. Emotional aspects should not be ignored as they can literally drive the potential customer in the complex process of choosing a brand new car, thus playing a major role in marketing. Last but not least, the effects of State-of-Charge (SoC) and environmental factors on battery performance have been studied. Fixing the mission of the vehicle is essential to be able to properly size the battery pack. The autonomy of an electric vehicle is strongly influenced by regen strategy in braking, technical characteristics such as installed power, mass, transmission ratio, the distribution of the traction between front and rear but it is also influenced by the parameters that change during the car’s motion such as the aerodynamic drag, the temperature of the battery... Therefore it is essential to carry out a series of sensitivity analysis to help the engineers to find the best compromise between all the variables involved and to evaluate the feasibility of control strategies to promote energy saving or performance depending on the driver needs. The research involves an interdisciplinary approach because it involves aspects typical of the dynamics of the vehicle, active safety, control strategies, implementation of electric motors and also a subjective-objective correlation regarding the perception of the driver.

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Cornwell, William Lincoln. "Switching Frequency Effects on Traction Drive System Efficiency." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/34983.

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Energy demands are steadily increasing as the world's population continues to grow. Automobiles are primary transportation means in a large portion of the world. The combination of fuel consumption by automobiles along with the shrinking fossil fuel reserves makes the development of new more energy efficient technologies crucial. Electric vehicle technologies have been studied and are still being studied today as a means of improving fuel efficiency. To that end, this work studies the effect of switching frequency on the efficiency of a hybrid electric vehicle traction drive, which contains both an internal combustion engine as well as electric motor. Therefore improving the efficiency of the electric motor and its drive will help improve the viability of alternative vehicle technologies. Automobiles spend the majority of their operational time in the lower speed, lower torque region. This work focuses on efficiency improvements in that region. To estimate the efficiency trend, the system is modeled and then tested both electrically and thermally. The efficiency is shown to increase at lower switching frequencies. The experimental results show that there are some exceptions, but the basic trend is the same. Master of Science

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Han, Lin 1982. "A comparison of permanent magnet motor structures for traction drive applications in hybrid electric vehicles /." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116015.

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This thesis presents a detailed comparison of the torque-speed characteristics of three permanent magnet synchronous machine designs based on how the magnets are mounted. The machines investigated are an interior permanent magnet machine, an interior-rotor surface-mounted machine and an exterior-rotor surface-mounted machine. They are designed for traction drives in hybrid electric vehicles. Two sets of comparisons based on the same machine volume and starting torque are performed. Important issues, such as machine mass and cost, cogging torque, and flux-weakening capability are addressed. Computer simulations were performed to estimate their performances and the results are presented. Design guidelines and tradeoffs of their performances are extracted from the simulation results. Relative strengths and limitations of different PM machine types are highlighted.

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Carraro, Enrico. "Analysis and design procedures of permanent magnet machines for hybrid electric vehicles and rail-traction applications." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3421927.

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The interest for Permanent Magnet (PM) synchronous machines has increased in the recent years. This is mainly due to important developments in the field of the electrical machine design, control systems and PM technology. These factors enable the possibility of designing electrical machines with a high torque density, power density, efficiency, low cost with wide degrees of freedom. Such requirements are highly sought in the automotive field, especially following the increasingly stringent energy efficiency and air pollution emissions policies. These conditions are pushing forward the transition from the conventional internal combustion engine mobility systems to the hybrid electric and full electric vehicles for the mass market production. Moreover, further requirements, especially in high demanding traction and auxiliary machines, such as Electric Power Steering (EPS) motors, are nowadays getting more and more important. Flux weakening performance, torque quality (cogging torque and torque ripple), demagnetization, acoustic performance and robustness of the designs has to be taken into account, together with stringent dimensional, electrical and thermal constraints typical for compact integrated automotive electrical drives. Due to recent sky-rocketing price, instability, critical availability of Rare Earth (RE) metals and the related environmental issue for their sourcing, Heavy (HR) RE free, RE-free and even PM free machines are hunted for in the automotive market. The novel PM motor topologies meet such a „market pull“. The main research subject of this PhD is the development of novel analysis and design procedures of PM synchronous machines for automotive applications. The latter range from low torque / power auxiliary systems, i.e. EPS machines, to high torque / high power applications, such as traction machines. It provides a comprehensive evaluation of various synchronous machine topologies. Particular attention is devoted to the study of HRE-free solutions and the development of Finite Element Analysis (FEA) and analytical procedures for the optimization of the motor designs. As mentioned above, these methodologies take into account several electromechanical constraints and various performance targets. As regards the traction machines, the investigation is focused to the permanent magnet assisted reluctance (PMASR) topology. The interest around the PMASR motors has grown in the last years especially as consequence of the price crisis of rare earth magnets. In fact these machines represent a potential low cost replacement of conventional PM machines due to several technical advantages, such as wide speed range, competitive torque density and efficiency, high overload capability and robust structure. On the other had, the most important drawback is represented by the high torque ripple. In the area of the electric power steering motors, several topologies, both with isotropic anisotropic rotor structures and equipped with fractional slot concentrated windings, are evaluated. Some novel motor designs, which employ the reluctance and flux concentration principle, are introduced, optimized by means of FEA procedures and experimentally validated in detail, including the acoustic and PM performance. Further considerations are derived on the robustness of the solutions against the manufacturing imperfections. Comparing to the isotropic topologies, these innovative motor configurations show higher torque density, extended speed range, optimal torque quality and acoustic performance, ensuring lower active cost and structural simplicity. Therefore, they represent attractive candidates for high performance automotive applications. Negli ultimi anni l'interesse nel settore delle macchine sincrone a magneti permanenti ha riscontrato una notevole crescita. Questo e' stato determinato principalmente da importanti sviluppi nel campo della progettazione delle macchine elettriche, nei sistemi di controllo e nelle tecnologie dei magneti permanenti. Questi fattori hanno reso possibile la progettazione di macchine elettriche con elevata densita' di coppia, densita' di potenza, rendimento, basso costo unitamente ad ampi gradi di liberta' nella geometria e struttura della macchina. Tali requisiti sono fortemente ricercati nel campo automotive, soprattutto a seguito dell'introduzione di sempre piu' stringenti normative sull'efficienza energetica e sulle emissioni atmosferiche inquinanti. Questi aspetti hanno accelerato la transizione da sistemi di mobilita' tradizionali con motori a combustione interna a veicoli ibridi-elettrici e puramente elettrici, nella produzione industriale di massa. Inoltre, ulteriori requisiti, specialmente in macchine da trazione ed ausiliarie ad alte prestazioni, quali ad es. motori per servosterzo elettrico, stanno attualmente diventando sempre piu' importanti. Prestazioni in deflussaggio, qualita' della coppia (coppia di impuntamento ed oscillazione della coppia), smagnetizzazione, prestazioni acustiche e robustezza delle configurazioni devono essere tenute in conto, insieme a stringenti vincoli dimensionali, elettrici e termici tipici di azionamenti elettrici compatti ed integrati. A causa dell'incremento significativo ed instabilita' dei prezzi delle terre rare, della criticita' dei loro approvvigionamenti ed i relativi impatti ambientali, soluzioni prive di terre rare pesanti, senza terre rare od addirittura senza magneti permanenti, sono fortemente ricercate nel settore automotive. La principale tematica di ricerca di questo dottorato riguarda lo sviluppo di innovative procedure di analisi e sintesi di macchine sincrone a magneti permanenti per applicazioni automotive. Queste ultime spaziano da sistemi ausiliari a bassa coppia / bassa potenza, nella fattispecie motori per servosterzo elettrico, fino a applicazioni at alta coppia / alta potenza, quali ad es. motori da trazione. Questo lavoro fornisce una valutazione complessiva di differenti tipologie di macchine. Particolare attenzione e' dedicata allo studio di soluzioni con magneti permanenti privi di terre rare pesanti ed allo sviluppo di procedure di ottimizzazione ad elementi finiti ed analitiche della geometria del motore. Come menzionato precedentemente, tali metodologie tengono in considerazione numerosi vincoli elettromeccanici e differenti obiettivi. Per quanto riguarda le macchine da trazione, la ricerca si e' focalizzata sulla topologia di motori a riluttanza assistiti da magneti permanenti. L‘interesse attorno a tali macchine e' cresciuto negli ultimi anni soprattutto a seguito della crisi dei prezzi dei magneti permanenti a terre rare. Infatti, tali macchine rappresentano una soluzione alternativa a basso costo rispetto a motori a magneti permanenti tradizionali a causa di importanti vantaggi tecnici quali ad es. un ampio regime di velocita', competitivi valori di densita' di coppia ed efficienza, elevata capacita' di sovraccarico ed una robustezza della struttura. D'altra parte, uno dei principali svantaggi e' rappresentato dall'elevata oscillazione della coppia. Nel campo dei motori per servosterzo elettrico, differenti topologie, sia dotate di rotore isotropo che anisotropo ed equipaggiate con avvolgimenti concentrati, sono state valutate. Alcune nuove configurazioni, che sfruttano il principio della riluttanza e della concentrazione di flusso, sono introdotte, ottimizzate per mezzo di procedure ad elementi finiti ed infine validate per mezzo di misure sperimentali, includendo valutazioni delle prestazioni acustiche e quelle dei magneti permanenti. Ulteriori considerazioni sono tratte per quanto concerne la robustezza delle soluzioni nei confronti delle imperfezioni costruttive. Rispetto alle macchine isotrope, tali configurazioni sviluppano una densita' di coppia piu' alta, esibiscono un piu' ampio intervallo di velocita', maggiore rendimento raggiungendo un qualita' della coppia e prestazioni acustiche competitive ad un costo inferiore e con una buona semplicita' costruttiva. Esse si dimostrano, pertanto, dei candidati ottimali per applicazioni automotive ad alte prestazioni.

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Chin, Yung-Kang Robert. "A permanent magnet traction motor for electric forklifts : design and iron loss analysis with experimental verifications /." Stockholm : Division of Electrical Machines and Power Electronics, School of Electrical Engineering, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4241.

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Kouns, Heath. "Analysis of Performance Characteristics of Electric Vehicle Traction Drive in Low Speed/Low Torque Range." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/36287.

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In a world with a growing population there is a trend toward higher and higher energy usage. Because of the cost involved in producing extra energy, there is a need for more efficient usage of the energy that is already available. The issue of efficiency rings home especially clear with electric motors. Although induction motors are used in many different applications, the motors used in electric vehicles must be able to generate a large starting torque as well as operate over a wide speed range. This work analyzes the restrictions placed on the motor and inverter drive system. It also looks at the best method for controlling the drive in order to achieve the highest efficiency out of the drive. While other works have shown methods of achieve high efficiency out of the motor, it is the assertion of this work that the efficiency of the total drive is more important. It is to that end that this work analyzes the performance of an induction motor under low torque and speed where a traction drive utilizes the most energy. Master of Science

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Zinzani, Michele. "Electric drives for ORTO - Orchard Rapid Transit Operation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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This thesis is focused on a novel agricultural technique for orchard cultivations that allows to perform automatic and fossil fuel free cultivation operations. More specifically, the aim of this thesis work is to study and implement the electric traction system and control the vehicle that performs the automatic operations. Starting from the analysis of each single component of the traction system, the control of the mobile platform will be then performed. After a first control of the mobile platform in no load conditions, the implementation of the dynamic model will be performed in the Simulink environment. Different simulations representing typical operational missions will be performed to have a real idea concerning the behaviour of the traction system and the energy consumption of this solution. Finally, the obtained results will be analysed for the future implementation of the mobile platform on the field.

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Medard, Fabien. "Contribution à la modélisation prédictive des comportements hautes fréquences des moteurs de traction." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT029/document.

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La diminution drastique des temps de commutation des convertisseurs MLI, due aux technologies émergentes comme le SiC (Carbure de Silicium), engendre un nombre important de phénomènes hautes fréquences dans les moteurs électriques notamment des tensions inter-spires et des courants de paliers. Ces travaux portent sur l'établissement d'un modèle impédant prédictif, valable sur une large bande de fréquence, fournissant les valeurs des tensions et des courants dangereux pour les moteurs. Pour cela, une maquette à échelle réduite a été étudiée dans un premier temps pour comprendre les phénomènes et offrir un cas simplifié de modélisation. Un bobinage en circuit imprimé a été fabriqué à cet effet. Un modèle de ligne a été développé et offre des résultats satisfaisants en prenant en compte les effets dus à la montée en fréquence. La même démarche de modélisation a été adoptée dans le cas du moteur réel dans la suite des travaux. Des campagnes de mesures sur un moteur instrumenté ont permis d'observer la propagation des ondes dans le bobinage. Une bobine a également été instrumentée pour offrir un accès au potentiel de chaque spire. Un modèle présenté dans la littérature a été approfondi en proposant une méthode d'identification des paramètres à partir de quelques points de mesures. Ce modèle sert de comparaison avec le modèle prédictif établi à la fin de ces travaux. La dernière partie de ces travaux s'intéresse à la modélisation du même moteur de traction. Un modèle de ligne dont les valeurs de paramètres ont été issues de calculs analytiques ou de simulations numériques a été réalisé tout en évitant d'avoir recours à des mesures. Ce modèle a donc un comportement prédictif puisque les données d'entrées sont pour la plus grande majorité uniquement géométriques. Il donne accès aux valeurs de tensions dans le bobinage et à l'amplitude des éventuels courants de paliers. Ce modèle peut alors servir d'outil d'aide à la conception des machines électriques en montrant les conséquences des choix de géométries In PWM converter, emerging technologies, like Sic and GAN, tend to decrease the rise time commutation which increases the occurrence of high frequency phenomenon such as bearing currents and voltage between coils. In this thesis, we aim to develop a predictive model able to give the currents and voltages amplitudes of those parasites. To simplify the understood of the phenomenon, a mock-up was built. It consists of a winding coil in a flexible PCB which represents the wave propagation in a real winding. Therefore, a first model was developed taking into account the effects produced by an increasing frequency. The model gives good results. It will be used in the real traction motor. Measures on a modified motor allowed observing the wave propagation across the coil. Those measures results will be compared to our motor model ones. A model found in the literature has also been studied. For this model, we built a parameters identification method based on several measurement points. This model will also be a compared to our motor model. The last part of this work explains the method used to build the predictive model. A line model is used to give an access to the winding. All parameters have been found with analytical formulations or with numerical simulations to avoid the use of measures. This model gives an access to a voltage between coils and to bearings currents. It can be used during the conception of motor to predict those problems

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Papazian, Jean-Charles. "Optimisation de la chaine de traction d'un véhicule électrique." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0100.

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Les objectifs de ce travail consistent à diminuer la consommation énergétique d'un véhicule électrique. Après avoir modélisé la chaîne de traction incluant un moteur asynchrone, un onduleur triphasé et sa commande ainsi que la mécanique, deux voies d'optimisation sont abordais. La première consiste à optimiser la commande en amont de l'onduleur. Différentes familles de commandes sont alors développées. La première commande optimise un critère sur une durée instantanée. Elle a été simulée, puis implantée sur véhicule. Elle apporte un gain d'autonomie significatif (quelques pourcents) et diminue la variation d'un cycle de conduite à l'autre. La seconde commande optimise un critère sur une durée plus longue. Sous certaines hypothèses, c'est un retour d'état linéaire avec un critère quadratique (commande LQ). Des premiers résultats de simulation font apparaître des autonomies supérieures à celles obtenues avec la première famille. La seconde voie consiste et optimiser la commande au niveau de l'onduleur. Une commande minimisant les pertes de l'onduleur est déterminée à partir des résultats de simulation. L'association d'un contrôle direct du couple et d'une commande en pleine onde à hautes vitesses diminue les pertes totales de l'onduleur de manière importante (quelques tourments de la puissance nominale)

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Raisemche, Aziz. "Commande tolérante aux défauts d’une chaine de traction d’un véhicule électrique." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112342/document.

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Les diverses normes internationales obligent les constructeurs automobiles à optimiser les chaînes de propulsion conventionnelles mais surtout à développer d’autres alternatives de motorisation dont l’une des plus prometteuses est le véhicule électrique. Néanmoins ces nouvelles propulsions doivent garantir les mêmes performances et le même niveau de sureté de fonctionnement (fiabilité et sécurité en l’occurrence). La chaîne de propulsion électrique est conçue autour d’un nombre important de constituants (machine électrique, capteur(s), convertisseur(s) de l’électronique de puissance, etc.) qui peuvent être le siège de défauts. La détection et la localisation de ces défauts sont indispensables mais pas suffisantes pour assurer la sureté de fonctionnement du système. En effet pour assurer un fonctionnement en mode dégradé, il faut mettre en œuvre une architecture de commande tolérante aux fautes. L'objectif principal de cette thèse est de proposer des nouvelles architectures de commande tolérante aux défauts (Fault Tolerant Control en anglais) d’un véhicule électrique propulsé par une machine asynchrone, en présence de plusieurs types de défaut du capteur mécanique. Cette thèse est organisée en 4 chapitres.Le Chapitre 1 est un état de l’art exhaustif avec une analyse critique des architectures et des systèmes de contrôle commande tolérants aux fautes des chaînes de traction électrique ainsi qu'un état de l'art des différents défauts qui peuvent apparaitre dans la chaine de traction électrique. Le Chapitre 2 propose deux architectures de commande tolérante aux fautes : l’Hybride FTC et le GIMC (Generalised Internal Model Control) ; l’approche Hybride FTC est une combinaison de deux contrôleurs, le premier est un régulateur PI pour le mode sain et le second un correcteur robuste H infini pour le mode défaillant. L’architecture GIMC permet la restructuration de la loi de commande d'une manière adaptative. Elle est conçue afin d’assurer une bonne robustesse du système en présence de défaut grâce à une boucle interne faisant office de boucle de correction et de diagnostic.Le Chapitre 3 est consacré exclusivement à la commande tolérante aux fautes à base d'algorithme de vote, en faisant une étude comparative de 4 algorithmes avec trois topologies différentes : une première structure est proposée sur la sortie du système, une deuxième structure est appliquée sur la commande du système, et la troisième structure est une hybridation des deux précédentes.Le Chapitre 4 est dédié à la validation expérimentale des architectures décrites précédemment. Les résultats obtenus montrent l’efficacité des approches FTC proposées The various international standards require automakers to optimize conventional power train but mainly to develop other alternatives to drive, one of the most promising is the electric vehicle. However, these new drives should guarantee the same performance and the same level of dependability (reliability and security in this case).Electric power train is built around a large number of components (electrical machine, the sensor, the converter, power electronics, etc.) which may be affected by defects. The detection and localization of these defects are essential but not sufficient to ensure the dependability of the system. Indeed, to ensure operation in degraded mode, you must implement architecture of fault tolerant control (FTC). The main objective of this thesis is to propose new fault tolerant control architectures of an electric vehicle induction machine power train in the presence of several types of mechanical sensor failure. This thesis is organized into four chapters.Chapter 1 is a comprehensive state of the art with a critical analysis of architectures and control systems tolerant to faults of electric powertrains and a state of the art of the various defects that may occur in the chain of electric traction.Chapter 2 proposes two architectures of fault tolerant control: Hybrid FTC and GIMC (Generalised Internal Model Control); Hybrid FTC approach is a combination of two controllers, the first is a PI controller for the sound mode and the second a robust controller for the failed H infinity mode. The architecture allows GIMC restructuring the control law in an adaptive manner. It is designed to ensure robustness of the system in the presence of a fault with an inner loop acting loop correction and diagnosis.Chapter 3 is devoted exclusively to the algorithm voting fault tolerant control based on comparative study of four algorithms with three different topologies: a first structure is proposed on the system output, a second structure is applied system control, and the third structure is a two preceding hybridization.Chapter 4 is devoted to the experimental validation of the architecture described above. The results show the effectiveness of the approaches proposed FTC

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Петренко, Олександр Миколайович. "Наукові основи вибору оптимальних параметрів та режимів роботи систем охолодження асинхронних тягових двигунів електротранспорту". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/35301.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.22.09 "Електротранспорт" - Національний технічний університет "Харківський політехнічний інститут" МОН України, Харків, 2018. Дисертація присвячена створенню наукових основ щодо вибору оптимальних параметрів та режимів роботи систем охолодження асинхронних тягових двигунів електротранспорту. Розроблений алгоритм рішення рівняння Гамільтона-Якобі-Беллмана для задачі руху електрорухомого складу на ділянці шляху із заданим профілем і графіком руху, що дозволяє створити експертну систему управління рухом. Особливостями цього алгоритму є застосування штрафних функцій для опису обмежень, що накладаються графіком руху: досягнення потягом кінцевого пункту за заданий час руху, обмеження швидкості на ділянках шляху, а також відсутність простоїв потягу в процесі руху. Єдиний підхід штрафних функцій застосований також для введення обмежень по зчепленню. Такий підхід дозволяє значно понизити витрати розрахункового часу і спростити процедури розрахунку витрат енергії. Створена математична модель для визначення ефективності тягового приводу. Модель включає в себе визначення основних втрат у асинхронного тягового двигуна з урахуванням насичення магнітної системи, що визначається за результатами вирішення рекурентного нелінійного рівняння. Також у моделі враховані втрати від вищих гармонік напруги в міді та сталі, а також механічні та додаткові втрати. В розробленій моделі враховуються статичні та динамічні втрати у IGBT транзисторах та діодах напівпровідникового перетворювача. Розроблено метод оптимізації параметрів та режимів роботи систем охолодження асинхронних тягових двигунів електрорухомого складу, якій складається з наступних основних етапів: визначення оптимальних режимів роботи тягового приводу на основі запропонованого виразу ефективності тягового приводу; визначення оптимальних режимів руху електрорухомого складу за критерієм мінімуму витрат; вирішення тягової задачі руху на ділянці колії с заданим графіком руху та профілем колії, а також визначенням залежності зміни втрат в елементах тягового двигуна за часом; вибору параметрів та режимів роботи систем охолодження тягових двигунів, які обумовлюють ефективність системи охолодження та вентиляції електрорухомого складу; вирішення задачі умовної мінімізації системи охолодження тягового двигуна за модернізованим критерієм економічної ефективності на основі методу Вейля за узагальненим золотим перетином та задачі аналізу системи вентиляції і охолодження тягових двигунів, яка створена на базі математичної моделі теплових режимів двигуна за узагальненою еквівалентною тепловою схемою. Thesis for the degree of Doctor of Engineering in specialty 05.22.09 "Electric transport " - National Technical University "Kharkiv Polytechnic Institute" MES of Ukraine, Kharkov, 2018. The thesis is devoted to the creation of scientific foundations for the selection of optimal parameters and operating modes for cooling systems for asynchronous traction motors of electric transport. An algorithm for solving the Hamilton-Jacobi-Bellman equation for the problem of the motion of an electric stock on a section of a track with a given profile and a traffic schedule is developed. That makes it possible to create an expert control system for motion. Features of this algorithm is the use of penalty functions to describe the restrictions imposed by the traffic schedule: the train reaches the destination point for a given driving time, the speed limit on the sections of the track, and the absence of train idle time during the movement. A single approach to penalty functions is also applied to introduce constraints on the adhesion. This approach allows to reduce significantly the costs of the estimated time and to simplify the procedures for calculating energy costs. A mathematical model is created to determine the efficiency of the traction drive. The model includes the determination of the main losses in an asynchronous traction motor, taking into account the saturation of the magnetic system, which is determined by the results of solving a recurrent nonlinear equation. Also, the model takes into account losses from higher harmonic stresses in copper and steel, mechanical and additional losses. The developed model takes into account static and dynamic losses in IGBT transistors and diodes of a semiconductor converter. A method for optimizing the parameters and operating modes of cooling systems for asynchronous traction motors of the electric stock is developed. It consists of the following main stages: determination of the optimum mode of the traction drive operation on the basis of the proposed expression of its efficiency; determination of optimum modes of movement of the electric stock by the criterion of minimum costs; solution of the traction problem of motion on a section of the track with a specified traffic schedule and the track profile, as well as the determination of the dependence of the change in losses in the elements of asynchronous traction engines in time; choice of parameters and operation modes of cooling systems for asynchronous traction motors, which determine the efficiency of the cooling and ventilation system of the electric stock; solution of the problem of relative minimization of the cooling system for asynchronous traction motors with a modernized criterion of economic efficiency based on the Weil method on the generalized golden section and the problem of analyzing the ventilation and cooling system of traction motors, which is based on the mathematical model of thermal motor conditions by the generalized equivalent thermal scheme.

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Bílý, Lukáš. "Simulační modely elektrických pohonů vozidel." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219228.

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The work deals with creating a DC electric motor drive. The model is composed of electrical power from the engine model and transistor pulse converter load, which are joined together and completed the anchor and regulate the flow control engine speed. Great attention was paid to the determination of losses in the load drive electric vehicles and create a model of electric power load. The real work was verified by an experimental model of an electric vehicle Car4 the available parameters.

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Meddour, Aissam Riad. "Optimisation du dimensionnement et la conception d'une chaine de traction (Batterie-Moteur) pour un véhicule électrique." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST018.

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Dans une perspective de se détacher de la dépendance des énergies fossiles, plusieurs nations pousse l'adoption de l'électrification des moyens de transport afin de réduire la pollution par gaz à effets de serre dont le transport est tenu responsable de plus de 20% de la totalité des émissions de CO2. Dans ce contexte, plusieurs constructeurs automobiles, élargissent leurs catalogues de véhicules en y insérant de plus en plus de véhicules électriques afin de suivre les règlementations mises en place qui, par exemple visent à ne plus vendre de véhicules thermique dans l'union européenne à partir de 2035. Toutefois il n'est pas aussi simple de concurrencer les performances ainsi que les prix des véhicules thermiques déjà dans le marché. Ainsi, afin de détourner l'intérêt du client vers l'électrification du transport, il est primordial de se lancer dans une optimisation de la chaine de traction du véhicule. Dans ce contexte, les travaux menés lors de cette thèse, visent à modéliser la chaine de traction le plus fidèlement possible afin d'optimiser ses performances dans le but d'accroitre sa durée de vie tout en minimisant son cout de construction. Pour cela des modèles multi-physique du moteur et de la batterie ont été construit, afin de prendre en compte les différents comportement électrique et thermique qui peuvent influencer leurs performances et durée de vie. Les deux modèles multi-physiques ont été lié entre eux de façon à tenir compte des interactions qui ne peuvent pas être négligé dans cette étude. Et l'évaluation de leurs performances à l'aides des modèles empirique, éléments finis et analytique ont été analysés et introduit dans l'algorithme d'optimisation génétique qui aura pour but de varier les paramètres optimisables qu'on choisit afin de réduire le cout de la chaine de traction considéré tout en maximisant sa durée de vie afin de pouvoir concurrencer les véhicules thermiques proposées dans le marché In a perspective to get away from the dependence on fossil fuels, several nations are pushing the adoption of electrification of the means of transportation in order to reduce the pollution by greenhouse gases of which the transportation is held responsible for more than 20% of the total CO2 emissions. In this context, several car manufacturers are expanding their vehicle catalogs by inserting more and more electric vehicles in order to follow the regulations in place which, for example, aim to no longer sell thermal vehicles in the European Union from 2035. However, it is not so easy to compete with the performance and prices of combustion engine vehicles already on the market. Thus, in order to divert the customer's interest towards electrification of transport, it is essential to optimize the vehicle's powertrain. In this context, the work carried out during this thesis, aims at modeling the drive train as accurately as possible in order to optimize its performance in order to increase its life while minimizing its construction cost. For this purpose, multiphysics models of the motor and the battery have been built, in order to take into account, the different electrical and thermal behaviors that can influence their performance and lifetime. The two multiphysics models have been linked together in order to take into account the interactions that cannot be neglected in this study. And the evaluation of their performances with the help of empirical, finite element and analytical models have been analyzed and introduced in the genetic optimization algorithm that will aim to vary the optimizable parameters that are chosen in order to reduce the cost of the considered drive train while maximizing its lifetime in order to be able to compete with thermal vehicles proposed in the market

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Cantegrel, Martin. "Vers une conception optimale des chaînes de traction ferroviaire." Phd thesis, Ecole Centrale de Lille, 2012. http://tel.archives-ouvertes.fr/tel-00794532.

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Cette thèse aborde la conception optimale des chaînes de traction par l'exemple d'une chaîne de traction pour métro. Les données d'entrée de la conception d'une chaîne de traction sont la performance attendue et l'encombrement des équipements nécessaires. Pour aider le concepteur, l'outil informatique donne aujourd'hui la possibilité de construire une grande variété de modèles. D'autre part, les algorithmes d'optimisation permettent de trouver les configurations optimales. Ces possibilités ont été exploitées au cours de ce travail. Les modèles développés permettent d'estimer un large nombre de critères. A travers l'exemple de ces modèles, la méthode de conception suivie est détaillée dans le rapport. D'un point de vue technique, la chaîne de traction proposée est détaillée dans le dernier chapitre

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Filipec, Petr. "Návrh pohonu elektrické tříkolky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229809.

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This work deals with designs of drive for two types electric powered tricycles (type for outdoor and indoor). Designs comprise general conception of drive. We selected optimal electric motors in terms of research electric engines and calculations. Next, we proposed batteries. The last part describes design power circuit and general financial expenses.

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Pelissou, Catherine. "Controle du couple d'une machine asynchrone pour la traction ferroviaire à moyenne et grande vitesse : transitions des modes de commandes et de MLI." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0101.

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Lors de la présente étude, nous avons conçu et réalisé une structure de contrôle synchrone du couple et du flux d'une machine asynchrone dans le domaine des moyennes et hautes vitesses. En effet, sur cette plage de vitesse le contrôle vectoriel par flux orienté n'est pas actuellement utilisable. Cette structure est associée à différents modèles de MLI, également synchrones. Les limitations imposées par l'onduleur ne permettant plus un fonctionnement asynchrone, à fréquence fixe, pour l'ensemble de la commande. La conception de cette commande s'est appuyée sur une modélisation de la machine qui a aidé à comprendre le fonctionnement et qui a donné les moyens nécessaires pour le calcul des réglages. Cette commande, unique sur la plage de fonctionnement moyenne et haute vitesse, est synchrone, ce qui permet de rendre inobservables les oscillations du couple instantané. A haute et moyenne vitesse, le couple est contrôlé directement (contrôle direct du couple) à partir d'une estimation du couple des fondamentaux. De plus à moyenne vitesse, l'amplitude du flux rotorique est aussi contrôlée. Les changements de modes de commandes et de MLI ont conduit à étudier des phases de transitions avec comme critère principal l'avance régulière du vecteur flux statorique afin de réduire les transitoires de couple. Pour les contrôles du flux et du couple, différents types d'escamoteurs capables de fournir les valeurs des grandeurs à régler ont été conçus et comparés. Des tests en simulation ont été effectués sur le moteur du "TGVNG" et ont donné des résultats satisfaisants

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Ilea, Dan. "Conception optimale des moteurs à réluctance variable à commutation électronique pour la traction des véhicules électriques légers." Phd thesis, Ecole Centrale de Lille, 2011. http://tel.archives-ouvertes.fr/tel-00794100.

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Le domaine de la traction électrique a suscité un très grand intérêt dans les dernières années. La conception optimale de l'ensemble moteur électrique de traction - onduleur doit prendre en compte une variété de critères et contraintes. Étant donnée la liaison entre la géométrie du moteur et la stratégie de commande de l'onduleur, l'optimisation de l'ensemble de traction doit prendre en considération, en même temps, les deux composants.L'objectif de la thèse est la conception d'un outil d'optimisation appliqué à un système de traction électrique légère qu'emploie un moteur à réluctance variable alimenté (MRVCE) par un onduleur triphasé en pont complet. Le MRVCE est modélisé en utilisant la technique par réseau de perméances. En même temps, la technique de commande électronique peut être facilement intégrée dans le modèle pour effectuer l'analyse dynamique du fonctionnement du moteur. L'outil d'optimisation réalisé utilise l'algorithme par essaim de particules, modifié pour résoudre des problèmes multi-objectif. Les objectifs sont liés à la qualité des caractéristiques de fonctionnement du moteur, en temps que les variables d'optimisation concernent la géométrie du moteur aussi que la technique de commande. Les performances de l'algorithme sont comparées avec ceux de l'algorithme génétique (NSGA-II) et d'une implémentation classique de l'algorithme par essaim de particules multi-objectif.Finalement, un prototype de moteur à réluctance variable est construit et le fonctionnement du MRVCE alimenté depuis l'onduleur triphasé en pont complet est implémenté et les outils de modélisation et d'optimisation sont validés

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Alves, Júlio Oliveto [UNESP]. "Concepção de veículo motorizado elétrico modular de acoplamento universal em cadeira de rodas." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151433.

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Submitted by JÚLIO OLIVETO ALVES null (julio.oliveto@gmail.com) on 2017-08-29T12:48:26Z No. of bitstreams: 1 versão digital - VEÍCULO MOTORIZADO ELÉTRICO MODULAR DE ACOPLAMENTO UNIVERSAL EM CADEIRAS DE RODAS MECANOMANUAL.pdf: 6431267 bytes, checksum: 267c216f343be2e22e3e8daad61fe7a8 (MD5) Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-08-29T13:09:02Z (GMT) No. of bitstreams: 1 alves_jo_dr_guara.pdf: 6431267 bytes, checksum: 267c216f343be2e22e3e8daad61fe7a8 (MD5) Made available in DSpace on 2017-08-29T13:09:03Z (GMT). No. of bitstreams: 1 alves_jo_dr_guara.pdf: 6431267 bytes, checksum: 267c216f343be2e22e3e8daad61fe7a8 (MD5) Previous issue date: 2017-08-08 O presente trabalho de pesquisa consiste na concepção de um veículo motorizado elétrico modular de acoplamento universal em qualquer modelo de cadeira de rodas mecanomanual. Trata-se de um equipamento eletro-mecânico, disponibilizado em forma de acessório, com estrutura física simplificada e alta tecnologia eletrônica aplicada capaz de proporcionar ao cadeirante maior liberdade de movimentação sem desgastes físicos. A aliança entre o design inclusivo e a área médica pode se relevar um passo importante na obtenção de produtos direcionados para as necessidades reais de pessoas com condições físicas e psíquicas particulares, melhorando o seu bem-estar e capacidade de execução de atividades no dia a dia. Desta forma, o presente trabalho é direcionado pelos fundamentos do design inclusivo com o principal ponto focal no usuário, mas que apresenta outros dois importantes pilares adotados em sua metodologia de desenvolvimento, sendo eles, o benchmarkig e o estudo de Normas Técnicas aplicadas no desenvolvimento de equipamentos assistivos. São apresentadas as etapas de desenvolvimento, ensaios com base em Normas Técnicas e teste de usabilidade. Busca-se evidenciar todo o processo de design de equipamento, assim como o estudo teórico de estabilidade e montagem do protótipo funcional. Os ensaios baseados na Norma Técnica ABNT NBR ISO 7176 permitem o entendimento do comportamento dinâmico e funcional do protótipo em termos de estabilidade estática, eficácia dos freios, consumo de energia, velocidade máxima, aceleração, desaceleração e capacidade de transposição de obstáculos. Por fim, discute-se a análise de resultados dos ensaios junto aos resultados teóricos calculados e pré-requisitos estabelecidos. The thesis consists in the conception of a modular electric motor vehicle that can be attached in any model of standard wheelchair. It is an electro-mechanical equipment, available as an accessory, with a simplified physical structure and high applied electronic technology capable of giving the wheelchair greater freedom of movement without physical wear and tear. The union between inclusive design and the medical field can be an important step in obtaining products aimed at the real needs of people with particular physical and psychological conditions, improving their well-being and ability to do their daily activities. In this way, the thesis is guided by the fundamentals of inclusive design with the main focal point in the user, by the way presents two other important pillars adopted in its development methodology, being the benchmarkig and the study of Technical Standards applied in the development of Assistive devices. The stages of development are presented, tests based on Technical Standards and usability testing. The aim of this work is to demonstrate the whole process of equipment design, as well as the theoretical study of stability and assembly of the functional prototype. The tests based on the Technical Standard ABNT NBR ISO 7176 allow the understanding of the dynamic and functional behavior of the prototype in terms of static stability, brake efficiency, power consumption, maximum speed, acceleration, deceleration and obstacle transposition capacity. Finally, we discuss the analysis of the results of the tests together with the calculated theoretical results and established prerequisites.

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Belhadi, M'hamed. "Étude de machines à réluctance variable pour une application de traction électrique : réduction des ondulations de couple et des efforts radiaux." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112185.

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Le mémoire traite de la machine à réluctance variable en proposant d'une manière simultanée et du point de vue conception des solutions à ses deux inconvénients majeurs à savoir les ondulations de couple et les efforts radiaux. Les premières se propagent le long de la chaine de transmission diminuant ainsi le confort des usagers et les deuxièmes sont à l’origine d’une nuisance sonore. Dans une première partie et en s’intéressant à une structure axiale caractérisée par une faible force radiale, un bilan sur cette structure est donc établi. En effet, une configuration à deux stators et un rotor est la plus adéquate pour éventuellement remplacer la machine radiale de référence. Cette structure axiale est comparée à cette machine de référence après avoir établi des règles de passage d’une structure à une autre. Un premier passage est effectué en gardant le même encombrement et un deuxième passage en dimensionnant la machine axiale pour satisfaire le même cahier des charges que la machine radiale. Dans une deuxième partie, le travail s’oriente vers la modification de la structure radiale de la machine de référence et son optimisation. Plusieurs modifications sont proposées dont une structure avec une cale magnétique qui est la plus performante. Des optimisations géométriques à l’aide de l’algorithme génétique sur un point de fonctionnement sont ensuite effectuées pour remédier aux deux problèmes. A la fin, un récapitulatif de plusieurs structures optimisées est proposé pour servir de référence. Le choix de la machine la plus adéquate pourra donc être effectué en faisant un compromis entre la maximisation du couple, la réduction de ses ondulations et la réduction des efforts radiaux This report deals with switched reluctance motor by offering design solutions to the drawbacks of torque ripples and radial forces in the same time. Torque ripples reduce the user comfort and radial forces are the origin of noise. In the first part, an axial structure characterized by low radial force is analysed. Indeed, an axial configuration with two stators and one rotor is the most appropriate to replace the reference radial machine. Ones the rules of passage from one structure to another are established, the axial structure is then compared to the reference one. A first passage is made by keeping the same volume and a second one by sizing the axial machine with the same specifications as the radial one. In the second part, the work concerns the modification of radial structure of the reference machine and its optimization. Several modifications are proposed including a structure with a magnetic wedge which is the most efficient. Geometric optimization using genetic algorithm are then performed on operating points to remedy the both problems. In the end, several optimized structures are proposed. The choice of the most suitable machine can be done by making a compromise between the torque maximization, reducing its ripples and reducing radial forces

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Sidi, Babe Ahmed Sidia. "Modélisation électromagnétique par la méthode des transformations conformes d’une machine de traction synchrone à rotor bobiné en vue de l’étude de sources de bruit magnétique." Electronic Thesis or Diss., Compiègne, 2023. http://www.theses.fr/2023COMP2756.

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Les travaux de ce mémoire portent sur la modélisation électromagnétique analytique de la machine synchrone à rotor bobiné (MSRB). Cette machine est utilisée pour la traction automobile des véhicules électriques du constructeur Renault. Afin de conserver les atouts de confort et de satisfaction client, les moteurs électriques conçus pour ces véhicules doivent être silencieux. Ainsi, la compréhension et la maîtrise des origines du bruit magnétique ainsi que sa réduction sont indispensables en phase de prédimensionnement de ces moteurs électriques. C’est dans ce cadre que s’inscrivent ces travaux de recherche. Dans la première partie de ce manuscrit, la problématique de la thèse est exposée. Ensuite, les origines du bruit magnétique dans les moteurs électriques sont abordées. De même, les notions d’acoustique indispensables pour comprendre le rayonnement du bruit et la sensibilité de l’oreille humaine aux sons émis sont rappelées. Afin de choisir l’approche de modélisation de la machine, un état de l’art des méthodes de modélisation électromagnétique de la machine est présenté. Ces différentes méthodes sont évaluées sur leur capacité de modéliser la double saillance de la machine, la saturation magnétique et la progressivité de la forme du pôle de la machine. Sans oublier, les critères de simplicité de mise en œuvre et de souplesse de la méthode. La première contribution scientifique de ces travaux est la modélisation électromagnétique analytique de la machine synchrone à rotor bobiné par la méthode des transformations conformes. Cette modélisation rend possible la prise en compte de la double saillance de la machine pour une finalité vibroacoustique. Les pressions magnétiques radiales et orthoradiales source du bruit magnétique sont évaluées et comparées à celles issues des éléments finis.La seconde contribution scientifique est la prise en compte de la saturation magnétique dans le modèle analytique de la machine. Cela est réalisé en introduisant une fonction d’escalier de coefficients de saturation magnétique. Ces coefficients permettent de corriger le niveau d’induction magnétique du modèle linéaire en face des dents stator afin de prédire correctement le niveau d’induction en saturé. La dernière partie de ces travaux est dédiée aux essais expérimentaux. Les essais vibroacoustiques du GMPé (Groupe Moto Propulseur électrique) sont présentés. L’évolution des harmoniques de pressions acoustiques mesurés est comparée à celle des harmoniques de pressions magnétiques calculées par le modèle électromagnétique et les éléments finis. Différents cas de fonctionnement de la machine sont couverts et l’effet de la fréquence de découpage sur les harmoniques principales de pressions magnétiques et acoustiques est abordé This thesis focuses on the electromagnetic design of the wound salient pole rotor synchronous machine. This machine is used for the traction of electric vehicles made by Renault Group. To ensure comfort and customer satisfaction, electric motors designed for these vehicles must be silent. Thus, understanding and mastering the origins of magnetic noise and its reduction are essential in the pre-design phase of these motors. This research is being carried out within this scope. The purpose of this thesis is explained in the first part of this work, . Then, the origins of magnetic noise in electric motors are discussed. In addition, with a view to have a better understanding of noise and the sensitivity of the human ear to the sounds emitted, the fundamental concepts of acoustics are recalled. In order to choose the design approach of the motor, a state-of-the-art of electromagnetic design methods is presented. These different methods are evaluated on their ability to consider the doubly salient effect of the motor, the magnetic saturation and the shape of the rotor pole. Besides, the simplicity of the approach to be implemented is an additional characteristic. The first scientific contribution of this work is the analytical electromagnetic model of wound salient pole rotor synchronous machine using conformal mapping. This model made it possible to take into account the doubly salient effect of the machine for a vibroacoustic purpose. The radial and orthoradial magnetic stress components which cause the magnetic noise are evaluated and compared with those from finite elements simulations. The second scientific contribution is the consideration of magnetic saturation by the analytical model of the machine. This was achieved by introducing a step function of local magnetic saturation coefficients. These coefficients make it possible to reduce the flux density of the linear model in front of each stator tooth in order to correctly predict the flux density in saturated conditions of the machine. The last part of this work is dedicated to experimental testing. The vibroacoustic experimental analysis of the electric powertrain are presented. Measured acoustic pressure harmonics is compared to magnetic pressure harmonics calculated by the electromagnetic model and finite elements simulations. Different operating points of the machine are studied and the effect of the switching frequency on the main harmonics of magnetic and acoustic pressures is addressed

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Hajihosseinlu, Amin. "Traction control of an electric vehicle with four in-wheel motors." IEEE, 2015. http://hdl.handle.net/1993/30601.

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This thesis evaluates an electric vehicle with four independently-controlled in-wheel electric motors. The electric vehicle investigated in this work requires a main con- troller that not only coordinates with each individual motor drive controller, but is also needed to distribute torque and power to each in-wheel motor. The controller adjusts the speed of each motor to the driving conditions according to the require- ments and emulates the behavior of a mechanical di erential. Then, in addition to the electronic di erential controller, a simple yet robust control strategy for maximiz- ing traction force between tire and road is developed and presented. Moreover, the controller continuously senses the yaw rate and prevents over- and under-steering by adjusting the torque on the right or left wheels. Simulation and experimental results validate the proposed strategy.

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Singh, Aditya Pratap. "Concept Population & Verification of Traction Motors." Thesis, KTH, Fordonsdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302129.

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The electrification of automobiles has emerged as the sustainable powertrain solutionto meet United Nations sustainable development goals of sustainable cities andcommunities, affordable and clean energy, and climate action. The success of theelectrification depends on the efficiency of traction motors. Hence, the automobileindustry is dedicated to improving the performance of electrical traction machinesfor high performance and sustainability. The thesis aims to build various electricalmachine’s concept designs and quantify their behaviour on sustainability andperformance. The thesis objective is to design Permanent Magnet Synchronous Motor (PMSM),Synchronous Reluctance Motor (SynRM), and Permanent Magnet SynchronousReluctance Motor (PMSynRM). The thesis work comprises of accurate performanceestimation and optimisation of these electrical machines through a finite element based method. The inhouse scripts are developed to estimate the performance, electrical losses, and efficiency of these electrical machines through flexible open-source tools. The performance of PMSM with rare-earth magnet Neodymium Ferrite Boron(NdFeB) and without rare-earth magnet (ferrite) is done to evaluate the role of bothmagnets in producing torque density. The SynRM is evaluated and optimized usinggenetic algorithms in the thesis. The electrical machines are designed without the useof rare-earth magnets to eliminate the degradation of the environment and reduce thecost and weight of the motor. The electrification of automobiles has emerged as the sustainable powertrain solutionto meet United Nations sustainable development goals of sustainable cities andcommunities, affordable and clean energy, and climate action. The success of theelectrification depends on the efficiency of traction motors. Hence, the automobileindustry is dedicated to improving the performance of electrical traction machinesfor high performance and sustainability. The thesis aims to build various electricalmachine’s concept designs and quantify their behaviour on sustainability andperformance. The thesis objective is to design Permanent Magnet Synchronous Motor (PMSM),Synchronous Reluctance Motor (SynRM), and Permanent Magnet SynchronousReluctance Motor (PMSynRM). The thesis work comprises of accurate performanceestimation and optimisation of these electrical machines through a finite element based method. The inhouse scripts are developed to estimate the performance, electrical losses, and efficiency of these electrical machines through flexible open-source tools. The performance of PMSM with rare-earth magnet Neodymium Ferrite Boron(NdFeB) and without rare-earth magnet (ferrite) is done to evaluate the role of bothmagnets in producing torque density. The SynRM is evaluated and optimized usinggenetic algorithms in the thesis. The electrical machines are designed without the useof rare-earth magnets to eliminate the degradation of the environment and reduce thecost and weight of the motor. Sammanfattning på svenska / Abstract in Swedish Elektrifieringen av bilar har framstått som en hållbar drivlinelösning för att mötaFörenade Nationernas hållbara utvecklingsmål för hållbara städer och samhällen, medprisvärda och rena energi och klimatåtgärder. Framgången med elektrifieringen berorpå effektivitet på motorer för framdrivningen. Därför är bilindustrin dedikerad tillatt förbättra prestanda för elmotorer för hållbarhet och hög prestanda. Avhandlingensyftar till att bygga olika konceptdesign för elmotorer för framdrivning och kvantifieraderas beteende på hållbarhet och prestanda. Uppsatsmålet är att utforma Permanent Magnet Synchronous Motor (PMSM),Synchronous Reluktance Motor (SynRM) och permanent magnetassisterad SynRM(PMSynRM). Examensarbetet består av noggrann prestationsuppskattning ochoptimering av dessa elektriska maskiner genom finit element metod (FEM). Deskripten för att hantera FEM för elektormagnetisk design är inhouse utveckladeför att uppskatta flexibelt prestanda, elektriska förluster och effektiviteten hos dessaelektriska maskiner genom att använda öppen källkod. Prestanda för PMSM med en sällsynta jordartsmagnet (NdFeB) och PMSM utansällsynta jordartsmagnet (ferrit) räknades fram för att utvärdera båda magneternasroll för att producera vridmomentdensitet. SynRM och PMSynRM maskinernautvärderas och optimeras med hjälp av genetiska algoritmer i avhandlingen.De studerade elektriska maskinerna är designad utan användning av sällsyntajordartsmagneter för att eliminera miljöförstöring och minska motorns kostnad ochvikt.

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Arab, Mohammad-Waseem. "Étude et conception d'un groupe motopropulseur électrique à faibles niveau vibratoire et sonore pour véhicule électrique. Aspects "contrôle - commande"." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112231/document.

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Dans un contexte mondial régi par de multiples facteurs économiques, énergétiques et environnementaux, la transition vers des modes de transport à zéro émission polluante semble inévitable. De ce fait, les constructeurs automobiles s’investissent de plus en plus dans le développement de groupes motopropulseurs électriques afin d’anticiper les besoins du marché. Parmi les différentes technologies de machines électriques considérées pour cette application, la Machine à Réluctance Variable à Double Saillance (MRVDS) présente des caractéristiques très attractives pour le milieu industriel.Les travaux présentés dans cette thèse visent à élaborer des solutions qui répondent aux points qui bloquent encore l’adoption de la MRVDS dans les véhicules électriques. Dans un premier temps, la commande en couple d’une MRVDS destinée à la traction électrique est analysée. En prenant en considération les exigences imposées par l’application envisagée, une stratégie de commande en couple est développée en intégrant deux méthodes complémentaires sur le plan de fonctionnement de la MRVDS choisie.Dans la deuxième partie, l’asservissement en courant est abordé. Les problématiques du contrôle propres à la MRVDS à forte dynamique de courant sont d’abord identifiées. Ensuite, deux régulateurs de courant, qui répondent à différents conditions d’implantation, sont présentés et validés par simulation.La dernière partie de cette thèse aborde le problème des à-coups d’accélération induits à basse vitesse et de leurs répercussions sur l'agrément de conduite. En effet, ce type de motorisation électrique introduit un nouvel aspect sur cette problématique. Une loi de commande anti-à-coups, composée de deux actions, est développée. Les simulations ont montré la conformité de la performance obtenue en utilisant la loi de commande proposée avec le cahier des charges industriel visé In a global context governed by multiple economic, energetic and environmental factors, the transition towards transportation modes with zero polluting emissions seems inevitable. Hence, automotive manufacturers are investing increasingly in the development of electric powertrains in anticipation of the market needs. Among the different electric motors technologies considered for this application, the switched reluctance motor (SRM) presents attractive characteristics for the industry.The work presented in this thesis aims to elaborate solutions in response to the points still hindering the adoption of the SRM in electric vehicles. First, torque regulation of an SRM intended for an electric traction is analyzed. Taking into consideration the requirements of the application in hand, a regulation strategy is developed through the integration of two methods which complement each other over the studied SRM range of operation.In the second part, the subject of current regulation in the SRM is discussed. The issues related to current regulation in SRMs disposing of high current dynamics are firstly identified. Then, two current regulators, each adapted to different implementation conditions, are presented and validated through simulations.The last part of this thesis discusses the acceleration jerks induced at very low speeds and their repercussions on driving comfort . Indeed, electric traction introduces a new aspect on this rather classic issue. An anti-jerk control law, composed of two control actions, is developed. Simulations have shown the conformity of the performance obtained with the proposed control law with the target industrial specifications

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Matucha, Tomáš. "Nezávislý nízkonapěťový trakční asynchronní pohon." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233490.

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This work deals with creation of an exact mathematical model of a traction drive with low-voltage induction machine (28 V) which is fed from accumulators. This model was developed in MATLAB – Simulink and consists of induction machine model, inverter model and load model. Vector Control was added to models connected together. This complex model allows considering many effects into simulations. These effects are commonly neglected, although they have significant influence on drive behaviour, especially by using low-voltage machine. It is impact of magnetic circuit saturation, impact of temperature and skin effect on winding resistance, impact of inverter nonlinearities such as on-state voltage drops on switching elements, dead times and transistors switching times. The attention was paid to determination of losses in drive parts. The correctness of the model was verified at laboratory workplace established for this purpose. The laboratory drive can be controlled by a microprocessor or by using MATLAB and dSPACE application. The influence of compensations of inverter nonlinearities and DC-link voltage ripple on higher harmonics of inverter output currents was analyzed. Furthermore, the control, which decreased resistive losses, was solved.

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Úlehla, Martin. "Mikrokontrolery pro BLDC motory." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235900.

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Master thesis deals with solutions of BLDC motors (brushless DC motors) control. It analyses microcontrollers and electronic components suitable for BLDC motor controllers under conditions of serial production. It mentions some common problems in practical aplication like dynamic motor braking, synchronization, recuperation and constant revolutions.

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Goss, James. "The design of AC brushless permanent magnet motors for electric vehicle traction applications." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685970.

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Brushless permanent magnet machines are a preferred topology for electric vehicle traction due to their inherent high efficiencies and excellent power densities. Electric and hybrid vehicles are a rapidly growing sector in the global automotive industry due to concerns regarding man made climate change, pollution in urban areas and the rising and volatile cost of fossil fuels. This research thesis investigates the design of brushless permanent magnet motors for electric vehicle applications from a technical and commercial perspective. A set of computationally efficient techniques are presented that enable the performance of any sinusoidal BPM machine to be evaluated over the entire operational envelope. By applying these techniques torque/speed characteristics, efficiency maps, complex duty cycles and thermally constrained performance envelopes can be modelled within a few minutes of computation. The techniques are comprehensively validated using experimental results from a 36 slot 10 pole interior permanent magnet motor designed for a small electric vehicle traction application. A complete design methodology is presented that provides a simple and rigorous approach to the design of BPM electric motors for traction applications. A number of modern CAD tools are utilised and electromagnetic, thermal and mechanical performance aspects are taken into account. It is shown that the use of this methodology can result in a significantly improved design, compared to the use of a unstructured iterative design approach, when used by an inexperienced designer.

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Kant, Krishan S. M. Massachusetts Institute of Technology. "Finite element simulation based design and optimization of electric motors for EV/HEV traction application." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122551.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019 Cataloged from PDF version of thesis. Includes bibliographical references (pages 125-129). The launch of so many commercial electric vehicles shows the effort toward pollution reduction and curtailing greenhouse gas emissions. A design for an electric vehicle does not just requires the electrical system to be efficient in particular; but it is required to perform in all extreme cases of thermal and mechanical stresses. And it is made possible by all the research and development in all the areas of electrical machines, power electronics and energy storage that electric vehicle systems can meet very challenging specifications. With the availability of reliable simulation tools, a lot of time and money can be saved in the designing process. Accurate simulation tools tends to be more time consuming. There are simplification methods that save time, but at the cost of some fidelity. Moreover, design is an iterative process and optimization of design based on some specific requirement multiplies the amount of computation and hence time consumption. This thesis deals with the design and optimization of permanent magnet based traction motors with given dimensions and drive constraints. The goal is to develop a method which has the accuracy of finite element method but with much smaller time consumption for designing and optimizing the motor. Since it is a traction motor, the optimization is carried for a specific load pattern of driving a car, called a drive cycle. The program developed is tested on various types of permanent magnet motors to verify the generality of the program. For the motor topologies that cannot achieve a particular specifications, the program specifies the maximum capability of the motor. by Krishan Kant. S.M. S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science

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Kostenko, I. "Increase of efficiency of process of start-up of traction electric motors of the rolling stock of city electric transport." Thesis, Вид-во СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/13041.

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Quraan, Mahran. "Modular multilevel converter with embedded battery cells for traction drives." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6653/.

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This thesis proposes a new modular multilevel converter with embedded cell balancing for battery electric vehicles. In this topology, the battery cells are directly connected to the half-bridge choppers of the sub-modules, allowing the highest flexibility for the discharge and recharge of each individual cell. Tht: traditional battery management system is replaced by the control of the converter, which individually balances all the cells. A new balancing algorithm is presented and discussed in. the thesis, showing that the converter generates symmetric three-phase voltages with low harmonic distortion even for significantly unbalanced cells. The thesis also analyses stationary recharge of the battery cells from both three-phase and single-phase ac sources. The performance of the converter as a traction drive is assessed in terms of torque-speed characteristic and power losses for the full frequency range, including field weakening. A simplified model for estimating conduction and switching losses for the proposed modular multilevel converter is presented and the results for a typical driving cycle are compared with a traditional two-level converter. Simulation and experimental results on a kW-size prototype have confirmed the feasibility of the proposed traction modular converter in terms of effectiveness of the cell balancing control, validity of the proposed loss model, suitability of use for traction and effectiveness of recharging operations.

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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. 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, the standard RSM and the induction machine is also done. The measured and calculated results of the different drives are presented and analysed in detail. It is concluded that the performance of the PM-assisted RSM in terms of torque, voltage and power factor compares favourably well with that of the induction machine in both the constant torque and flux-weakening speed regions. Furthermore, it is shown that the temperature rise of the stator winding of the PMassisted RSM is lower than that of the RSM with both machines at the same load. AFRIKAANSE OPSOMMING: Die tesis beskryf die optimum rotor ontwerp en vermoë van 'n 110 kW Permanent- Pagnet-ondersteunde (PM-ondersteunde) Reluktansie Sinchroon Masjien (RSM) trekkrag aandryfstelsel. Spesifieke aandag word gegee aan die vermoë van die aandryfstelsel in die vloedverswakking spoedgebied. 'n Volledige verduideliking word gegee van die eindige-element ontwerp optimering, die basiese beginses van werking en die beheer-ontwerp van die PM-ondersteunde RSM aandryfstelsel. 'n Teoretiese vergelyking van die draaiumoment-vergelyking van die PM-ondersteunde RSM, die standard RSM en die induksmasjien word gedoen. Die berekende en gemete resultate van die verskillende aandryfstelsels word in detail aangebied en ge-analiseer. Dit is gevind dat die vermoë van die PM-ondersteunde RSM in terne van draairnoment, spanning en arbeidsfaktor gunstig vergelyk met dit van die induksiemasjien in beide die konstante draairnoment en vloedverswakking spoedgebiede. Verder word getoon dat die temperatuur-styging van die statorwinding van die PM-ondersteunde RSM laer is as die van die RSM, met deide masjiene by die selfde las

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Hu, Zheng [Verfasser]. "Optimization-based robust control for high-performance torque vectoring in electric vehicles operated by induction traction motors / Zheng Hu." Aachen : Shaker, 2017. http://d-nb.info/1138178713/34.

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Schwarzer, Michael [Verfasser], Tobias [Akademischer Betreuer] Melz, and Christian [Akademischer Betreuer] Beidl. "Structural Dynamic Modeling and Simulation of Acoustic Sound Emissions of Electric Traction Motors / Michael Schwarzer ; Tobias Melz, Christian Beidl." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2017. http://d-nb.info/113326204X/34.

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Horáček, Radim. "Design zemědělského traktoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231754.

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The main subject of this master‘s thesis is an innovative approach to design of an ag- ricultural tractor with technical, esthetic, ergonomic and economic demands. The aim is to create a distinctive design and shape of tractor unbound from conventional solutions. The concept takes account of the farm–machine relationship, the alterna- tive powertrain, and friendliness to the environment.

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Chandrasekharan, Santhosh. "Development of a tractor-semitrailer roll stability control model." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196260360.

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Ali, M. R. N. "Developments in D.C. disc machines : design, construction and performance of permanent magnet axial field motors for traction applications." Thesis, University of Warwick, 1985. http://wrap.warwick.ac.uk/113595/.

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Axial-field permanent magnet motors have been shown to offer improved efficiency and power density compared with conventional machines. The different aspects of the advantages of permanent magnet disc armature motors have been demonstrated. A technique is described by which the magnetic circuit is then designed for optimum motor efficiency. The development of criteria for the selection of machine parameters leads to a commuter program that produces a realistic design given only the desired rower, speed, and voltage as input data. An analytical model has been established to quantitively predict the degree to which the permanent magnet field is demagnetised by the armature current. A new method for armature construction (skeleton armature) is described which is more satisfactory than encapsulation for the necessary mechanical strength and rigidity. The high power to weight and high power to volume allows novel locations to be considered for the drive motor within the vehicle, and a new design of axle-mounted twin-rotor machine will also be described. Such relocation, together with belt reduction gear, reduces the weight and rower losses associated with other transmission components. The construction of a vehicle test facility to evaluate the performance of electric and hybrid vehicles is described. The Nova series hybrid vehicle was tested on the rig. The trials showed that the losses in belt drive transmissions were less than those in a conventional transmission.

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Hu, Zheng Verfasser], Kay [Akademischer Betreuer] [Hameyer, and Axel [Akademischer Betreuer] Mertens. "Optimization-based robust control for high-performance torque vectoring in electric vehicles operated by induction traction motors / Zheng Hu ; Kay Hameyer, Axel Mertens." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1162498242/34.

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Hu, Zheng [Verfasser], Kay [Akademischer Betreuer] Hameyer, and Axel [Akademischer Betreuer] Mertens. "Optimization-based robust control for high-performance torque vectoring in electric vehicles operated by induction traction motors / Zheng Hu ; Kay Hameyer, Axel Mertens." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://nbn-resolving.de/urn:nbn:de:101:1-2018071006521376576062.

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Horn, Maik [Verfasser]. "Untersuchungen zur praktischen Umsetzung von Elastomer-Lagersitzen in Hochdrehzahl-Traktionselektromotoren : Studies for the practical implementation of elastomer supported bearing carriers in high-speed traction electric motors / Maik Horn." Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2019. http://d-nb.info/1204458782/34.

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Miersch, Sören, Ralph Schubert, Thomas Schuhmann, et al. "Ceramic-like Composite Systems for Winding Insulation of Electrical Machines." IEEE, 2020. https://htw-dresden.qucosa.de/id/qucosa%3A74384.

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Insulating sheets, impregnants and encapsulation materials commonly used for winding insulation offer low thermal conductivities. This leads to an increased heating of the winding of electrical machines and to the existence of hotspots. The electromagnetical utilization of the machine has to be reduced with respect to the allowed maximum winding temperature. In this paper, the development and experimental investigation of novel polysiloxane composites with ceramic fillers are presented. The materials are tested by means of impregnated and encapsulated samples of a round-wire winding as well as the main insulation of electrical steel sheets and laminated cores. Numerical models are implemented for determining the equivalent thermal conductivity of the winding compound comprising the enameled wire and the impregnant. Based on the example of a permanent-magnet synchronous machine with outer-rotor in modular construction, the potential for increasing the electromagnetical utilization is shown.

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Pokálený, Jan. "Trakční pohon elektromobilu napájený vodíkovým palivovým článkem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217584.

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The topic of this diploma thesis is a traction drive of electrocar with fuel cell. The drive is supplied with hydrogen fuel cell with power of 2 kW. The traction drive consists of the three-phase DC/AC converter and the asynchronous machine. The main part of this work is a creation of the mathematical model of the traction drive in program Matlab–Simulink.

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Sá, Tiago Oliveira Bastos Pinto de. "Traction control in electric vehicles." Master's thesis, 2012. http://hdl.handle.net/10216/65531.

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Sá, Tiago Oliveira Bastos Pinto de. "Traction control in electric vehicles." Dissertação, 2012. http://hdl.handle.net/10216/65531.

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Luiz, Daniel de Figueiredo. "Development of a switched reluctance motor controller applied to electric vehicles traction." Master's thesis, 2022. https://hdl.handle.net/10216/140751.

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Almeida, Carlos Eduardo dos Santos. "Design of a Switched Reluctance Motor Controller Applied to Electric Vehicles Traction." Master's thesis, 2019. https://hdl.handle.net/10216/119709.

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Switched reluctance motors (SRM) are a suitable and cheaper alternative for current electric vehicle (EV) powertrain topologies due to low weight, high torque/size ratio and simple construction, without permanent magnets and a minimum amount of copper. The main setback that these motors encounter is the high torque ripple, mainly due to the highly nonlinear torque generation mechanism. Torque ripple leads to mechanical vibrations that require unnecessary wear in the mechanical powertrain. In conventional torque sharing function (TSF) control, the torque produced by the machine cannot follow the expected torque for an extended speed range, mostly due to the imposed demagnetization of the outgoing phase at high speeds, resulting in poor performance and causing a high torque ripple. The main goal of this work is to design and validate a new SRM control method suitable for EV propulsion. The proposed controller applies a feedback loop that improves the weakness of the conventional methods, keeping a fast dynamic response. The simulation results show that torque ripple can effectively be reduced for a high torque and speed range. The researched algorithm is developed using Matlab/Simulink, basing the validation on experiments with a 60kW SRM, 12/8 poles prototype designed using finite element methods (FEM).

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Huang, Ying-ruei, and 黃盈瑞. "Development and Traction Control of Front-wheel Drive In-wheel Motor Electric Vehicles." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65565605896637143344.

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碩士 國立臺南大學 綠色能源科技研究所碩士班 100 The paper proposed the development and traction control system (TCS) of a front-wheel drive electric vehicle (EV). Two in-wheel motors were utilized in the system to construct a power-scattered EV. The permanent magnet servo motor can individually control the motor power output and immediately limit the torque individual. This paper imposed the maximum transmission torque estimation (MTTE) system as the core of TCS for preventing the vehicle skid. The control algorithm is embedded in a high speed microprocessor, which can real-timely monitor feedback signals. In the torqure ouput, a plenary gearbox was employed to amplify the motor torque. This paper also used the simulation software “CarSim” to analyze the anti-skid performace of the prototype EV which is called Corsa-EV. The crucial issues include vehicle dynamics construction and anti-skid evaluation. From the results of simulation, it is obvious that the propsed EV can achieve an accetptable performance of stability and safety with the enhancement of MTTE.

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Chang-YiCheng and 鄭彰毅. "Integrated Control of Traction Motor Drive and Battery Energy Management for Electric Vehicles." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/58224h.

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Fan, Chun, and 范峻. "Research of the Real-Time Motor Drive Fault Detection and Fault Tolerant Control Techniques for Multiple Traction Electric Vehicles." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/39154691472670855466.

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碩士 國立臺灣大學 機械工程學研究所 103 This thesis developed a real-time fault detection techniques for motor drive system of electric vehicles which enhanced the safety of the multiple traction electric vehicles. This research used dSPACE real-time control system simulator as a fault/failure mode analysis platform for motor drive system of electric vehicles. This platform is used to implement the quantitative and qualitative analysis for fault/failure mode of motor drive system and construct the failure mode and effect analysis (DFMEA) in order to execute the research of real-time fault detection and classification of motor drive system. This research proposed a real-time fault detection method based on the wavelet transform technique which combined with model predictive control theory, developing a fault tolerant control techniques for enhancing the safety and system reliability of propulsion system of multiple traction electric vehicles.

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Ji, P. "Development and simulation of a traction control system using individual motor direct torque control techniques for a formula SAE electric racing vehicle." Thesis, 2020. https://eprints.utas.edu.au/35854/1/Ji_whole_thesis.pdf.

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Independent-drive electric vehicles represent an advanced approach to vehicle dynamic control. The main feature of these systems is that they use traction motors that are independently connected to each wheel. This results in a shorter driveline, higher transmission efficiency, more compact packaging, and better utilisation of space. Combined with the torque information produced by electric traction motors, an independent-drive electric vehicle system is capable of performing traction control, antilock braking control and electronic power steering. Traction control is also an effective strategy to control longitudinal vehicle dynamics that functions by preventing the wheels from slipping while driving. It has potential for optimising vehicle dynamics during frequent acceleration and takeoff. Since the late 1990s, there have been several studies regarding traction control for fully electric motor drive vehicles. These studies have investigated traction control systems based on fuzzy methods, rule-based control, slidingmode control, Proportional–Integral–Derivative control and modification, optimal linearisation control and model-based control. A further distinction can be made between torque-based control, slip-based control and systems that combine both. Nevertheless, most of the existing studies of torque-based traction control have been investigated only in simulation. Further, since 2012, only four studies have focused on designing an electric motor controller with an embedded traction control algorithm. The aim of this project is to understand and develop a traction control system that can be used for the future University of Tasmania Formula SAE electric racing vehicle. Following the guidelines of the Formula SAE rules, the vehicle will be an 80 kW, 600 V peak, rear-wheel drive, open-wheel formula race vehicle.

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Cavaleiro, Diogo Emanuel Santos. "Motor síncrono de relutância para sistemas de tração de veículos elétricos." Master's thesis, 2015. http://hdl.handle.net/10316/40460.

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Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra O principal objetivo deste trabalho consiste no desenvolvimento e implementação de um sistema de controlo de um acionamento elétrico utilizando um motor síncrono de relutância (SynRM) orientado para aplicações de tração elétrica, particularmente veículos elétricos. O Capítulo 1, de natureza introdutória, apresenta um enquadramento do tema sobre o qual se desenvolveu este trabalho. Neste capítulo é apresentado o SynRM destacando-se algumas das suas vantagens face às suas principais alternativas, que evidenciam a motivação para a realização deste trabalho. No Capítulo 2 é, inicialmente, apresentado o modelo matemático do SynRM. São descritos os fenómenos de saturação magnética e de saturação magnética cruzada, bem como as consequências que estes têm ao nível do sistema de controlo. O principal objetivo deste capítulo consiste na apresentação das estratégias de controlo utilizadas em acionamentos elétricos com SynRMs, no sentido de analisar qual a que melhor se adequa ao sistema de controlo a ser implementado, dada a aplicação alvo do acionamento a desenvolver. No Capítulo 3 é justificada a opção pela estratégia de controlo implementada, após a qual é feita uma apresentação detalhada da mesma. Neste capítulo é ainda apresentada uma estratégia de minimização das perdas elétricas no SynRM, que será também incluída no sistema de controlo. O Capítulo 4 apresenta os resultados de simulação obtidos com a estratégia de controlo por orientação do fluxo ativo, em diferentes regimes de funcionamento para várias condições de carga e de velocidade. No final deste capítulo são ainda apresentados resultados de simulação obtidos com a estratégia máximo binário por ampere (MTPA), que evidenciam a não utilização da mesma no acionamento elétrico desenvolvido. No Capítulo 5 é apresentada, inicialmente, uma breve descrição dos diversos componentes que constituem o acionamento elétrico, a seguir à qual são apresentados os resultados experimentais obtidos nos ensaios realizados para diferentes regimes de carga e de velocidade. Este capítulo realça ainda a importância da estratégia de minimização das perdas elétricas no SynRM, que permitiu obter melhorias significativas ao nível do rendimento do acionamento. O Capítulo 6 contém as principais conclusões do trabalho desenvolvido e apresenta algumas sugestões para trabalho futuro. The main goal of this work consists in the development and implementation of a control system for an electric drive using a synchronous reluctance motor (SynRM) oriented to traction applications and particularly to electrical vehicles. Chapter 1, of introductory nature, presents a framework on the subject of development of this work. This chapter presents the SynRM highlighting some of its advantages over its main alternatives, which shows the motivation for the execution of this work. In Chapter 2 the mathematical model of SynRM is presented. Magnetic saturation and cross magnetic saturation effects are presented as well as their consequences on a control system. The main purpose of this chapter is to present the most common control strategies used in electric drives with SynRMs, in order to analyze which one is the best strategy to implement on the drive that will be developed. In Chapter 3 the choice for the implemented control strategy is explained and this control strategy is described in detail. This chapter also presents a strategy to minimize the SynRM electrical losses to be included in the control system. Chapter 4 presents the simulation results with the active flux orientation control strategy, obtained for different operating conditions of load and speed. This chapter also presents simulation results of another control strategy, maximum torque per ampere (MTPA), to show that this kind of strategy is not adequate for this specific application. In Chapter 5 the main components of the electric drive are briefly described. This chapter presents the experimental results obtained in different operating regimes for various conditions of load and speed. This chapter also presents the importance of the SynRM electrical loss minimization strategy, which ensured significant improvements in the drive’s efficiency. Chapter 6 contains the main conclusions of this work and presents some suggestions for future work

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