Dissertations / Theses on the topic 'Traction drives'
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Selhi, Hocine. "Simulation of transients in AC traction systems." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282843.
Full textQuraan, Mahran. "Modular multilevel converter with embedded battery cells for traction drives." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6653/.
Full textMakazaga, Iban Vicente. "Sensorless control of induction motor drives for railway traction applications." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.712120.
Full textGitau, Michael N. "Optimal PWM switching strategy for single-phase AC-DC converters." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/7205.
Full textHofmann, Andreas [Verfasser]. "Direct Instantaneous Force Control : Key to Low-Noise Switched Reluctance Traction Drives / Andreas Hofmann." Aachen : Shaker, 2016. http://d-nb.info/1118258487/34.
Full textZinzani, Michele. "Electric drives for ORTO - Orchard Rapid Transit Operation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textSalehifar, Mehdi. "Fault diagnosis and fault tolerant control of multiphase voltage source converters for application in traction drives." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/277469.
Full textHay una creciente demanda de vehículos con menor impacto ambiental y una mayor eficiencia de combustible. Para cumplir estos requisitos, la electrificación del transporte se ha introducido en la academia y la industria en los últimos años. Vehículos eléctricos y vehículos eléctricos híbridos son dos ejemplos prácticos en los sistemas de transporte. El tren de potencia típico en los vehículos eléctricos se compone de tres partes principales, incluyendo la fuente de energía, la electrónica de potencia y un motor eléctrico. En cuanto a la máquina, de imán permanente motores son la opción dominante para vehículos híbridos ligeros en la industria debido a su mayor eficiencia y densidad de potencia. Con el fin de operar el tren de potencia, la máquina eléctrica se puede suministrar y controlado por un inversor de fuente de tensión. El convertidor se somete a diversos tipos de fallos. Según las estadísticas, 38 % de las fallas en un motor se deben al convertidor de potencia. Por otro lado, el tren de potencia eléctrica debe cumplir con un alto nivel de fiabilidad. Máquinas multifase PM pueden cumplir con los requisitos de fiabilidad debido a sus características de tolerancia a fallos. La máquina puede seguir siendo operativo con fallas en múltiples fases. En consecuencia, para realizar una unidad de motor de alta disponibilidad de múltiples fases, tres conceptos principales deben desarrollarse incluyendo la detección de fallos, el aislamiento de fallas y control tolerante a fallos. Por tanto, esta tesis doctoral se centra en la FD y control tolerante a fallos de un VSI multifase. Para lograr este objetivo la investigación, los productos alimenticios y bebidas y métodos de control que se presentan del convertidor de potencia se investigan a fondo a través de revisión de la literatura. Después de eso, se estudió la condición operativa del convertidor de múltiples el suministro de la máquina eléctrica. En cuanto a los métodos de FD en múltiples fases, tres nuevos algoritmos se presentan en esta tesis. Estos métodos FD propuestas también están integrados en los nuevos algoritmos de control con tolerancia a fallos. En el primer paso, se propone un método FD modelo novela basada detectar fallas múltiples del interruptor abierto. Este método FD está incluido en el algoritmo de control adaptativo desarrollado proporcional resonante del convertidor de potencia. En el segundo paso, se proponen dos métodos FD señal basada. Se discute el control tolerante a fallos del convertidor de potencia con el controlador PI convencional. Además, la teoría de la SMC se desarrolla. En el último paso, el control conjunto finito modelo de control predictivo del motor de cinco fases sin escobillas de corriente continua se discutió por primera vez en esta tesis. Un método FD sencilla se deriva de las señales de control. Las entradas a todos los métodos desarrollados son las corrientes de cinco de fase del motor. La teoría de cada método se explica y se compara con los métodos disponibles. Para validar la teoría desarrollada en cada parte, FD algoritmo está incorporado en el algoritmo de control tolerante a fallos. Los resultados experimentales se llevan a cabo en una unidad de motor BLDC de cinco fases. El motor eléctrico usado en los resultados experimentales tiene una estructura de rotor exterior en las cuatro ruedas. Este motor es adecuado para los vehículos eléctricos. Al final de cada parte, se presentan los puntos notables y conclusiones
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.
Full textVan, Schalkwyk Daniel Jacobus. "Dynamics and Energy Management of Electric Vehicles." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/725.
Full textMollet, Yves. "Fault-tolerance and noise and vibration aspects of electrical drives: Application to wind turbines and electrical vehicle traction." Doctoral thesis, Universite Libre de Bruxelles, 2017. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/260381.
Full textLa prise de conscience de la responsabilité humaine dans le réchauffement climatique est à la source de nombreuses initiatives publiques et privées parfois internationales pour réduire les émissions de gaz à effet de serre. Dans ce contexte, le développement de technologies durables dans deux secteurs à forte empreinte écologique est visé: la production d'énergie électrique et les transports. Dans le premier secteur, la progression de l'éolien est à présent la plus rapide parmi toutes les énergies renouvelables. Cependant, les éoliennes souffrent d'un manque global de fiabilité et d'accessibilité par rapport aux centrales électriques classiques, ce qui conduit potentiellement à des pertes de production et des coûts de réparation importants. La première partie de ce travail se focalise sur l'amélioration de la chaîne électrique en la rendant tolérante aux défauts de capteurs au moyen de la combinaison d'un estimateur et d'un algorithme de détection de défauts, tirant avantage de la redondance de mesures déjà présente sur les entraînements à machines asynchrones à double alimentation (MADA). Les estimateurs et la détection et l'isolation de défauts de capteurs sur les MADA a fait l'objet de nombreuses publications scientifiques. Cependant, la plupart d'entre elles considèrent un seul type de mesure et peu de travaux prennent en compte la saturation magnétique. Une nouvelle combinaison d'un observateur et d'un algorithme de détection de défauts de type ‘CUSUM', considérant la saturation magnétique et nécessitant une puissance de calcul limitée, est proposée dans cette thèse pour l'estimation du couple électromagnétique, des courants et de la position rotoriques en vue d'obtenir la tolérance aux défauts de capteurs. Cet algorithme est validé en régime permanent et cas de transitoires modérés, de tensions du réseau déséquilibrées et d'erreurs d'estimation des paramètres de laMADA. L'estimateur est aussi capable de démarrer seul lors du démarrage de la génératrice. Dans le secteur des transports, des véhicules hybrides et électriques commencent à être visibles sur les routes, malgré que des progrès technologiques importants en termes d'autonomie, de performances, mais aussi de bruits et vibrations soient encore nécessaires pour une utilisation plus intensive. L'objectif de la deuxième partie de cette thèse se rapporte à ce dernier défi et consiste à analyser les aspects acoustiques et vibratoires d'une machine à réluctance variable 8/6 conçue pour propulser un véhicule électrique. Ces problèmes acoustiques et vibratoires, qui limitent notamment l'usage de telles machines dans des applications de propulsion, ont été l'objet de divers articles scientifiques. Cependant, la plupart d'entre eux sont focalisés sur des analyses modales ou de phénomènes particuliers, alors qu'une évaluation globale des problèmes de bruit et de vibration des machines à réluctance variable en conditions normales de fonctionnement est rarement proposée, de même que l'utilisation de critères de qualité sonore. Une méthode expérimentale globale et relativement rapide pour évaluer l'évolution du bruit et des vibrations est proposée dans ce travail. Les essais sont réalisés en régime transitoire pour exciter une large bande de fréquences et en faisant varier continuellement, quand cela est possible, les conditions de fonctionnement. Les courants, vibrations radiales et bruits acoustiques résultants sont présentés sous formes de cartographies couleur pour une distinction aisée des fréquences affectées et non-affectées et comparés aux niveaux calculés de bruyance et d'acuité correspondants. Par ailleurs, la mise en place d'un nouveau régulateur à hystérèse en courant à plus grande fréquence d'échantillonnage a permis d'améliorer la qualité de la commande et du bruit acoustique associé en réduisant l'amplitude des oscillations de courant et l'excitation des fréquences de résonance. Les essais montrent que la fréquence de commutation doit être suffisamment élevée pour éviter l'excitation du mode d'ovalisation de la machine, mais pas trop pour éviter une trop grande acuité du son produit. L'amplitude des oscillations doit aussi être considérée pour limiter la bruyance. En conséquence, une commande en ‘soft chopping', ou une tension réduite du bus continu à basse vitesse, doit être combinée à une bande d'hystérèse relativement faible. Enfin, le cas d'un défaut de phase ouverte a été étudié et a montré une amplification des ordres pairs du courant dans les spectres vibratoires et acoustiques.
De bewustwording van de menselijke verantwoordelijkheid in de opwarming van de aarde heeft tot verschillende private en publieke initiatieven geleid om de uitstoot van broeikasgassen te verminderen. In deze context is de ontwikkeling van hernieuwbare technologieën hoofdzakelijk gericht op twee sectoren met een belangrijke ecologische impact: elektriciteitsproductie en transport.In de eerste sector ontwikkelt windenergie zich op dit moment sneller dan alle andere hernieuwbare energieën. Maar windturbines lijden nog steeds aan een gebrek aan betrouwbaarheid en toegankelijkheid, en dus aan potentieel hogere productieverliezen en herstelkosten, als ze met klassieke krachtcentrales worden vergeleken. In het eerste deel van deze doctoraatsthesis wordt op de verbetering van de elektrische keten geconcentreerd door de combinatie van een schatter en een foutdetectie- en -isolatiealgoritme (FDI-algoritme) om sensorfouttolerantie te verkrijgen dankzij de reeds aanwezige meetovertolligheid op dubbelgevoede inductiemachine (DFIG) aandrijvingen.Schatters en sensor-FDI-algoritmen zijn het onderwerp van vele wetenschappelijke artikelen geweest. Meestal wordt maar één sensortype beschouwd en met de magnetische verzadiging wordt niet vaak rekening gehouden. Een nieuwe combinatie van een schatter met gesloten terugkoppeling en een FDI-techniek gebaseerd op het ‘cumulative-sum' principe is voorgesteld. Zo kan het elektromagnetische koppel, de rotorstromen en positie worden geschat voor sensor FDI en fouttolerantie met beperkte rekenkosten en zonder de magnetische verzadering te verwaarlozen. Het algoritme wordt in stabiele toestand gevalideerd, maar ook in het geval van gematigde transiënte situaties, onevenwichtige netwerkomstandigheden en een verkeerde schatting van DFIG parameters. Het kan ook vanzelf starten tijdens de startprocedure van de generator.In de vervoersector beginnen hybride en elektrische voertuigen op de wegen te rijden. Maar vooreen intensiever gebruik van zo'n wagens zijn er nog technologische verbeteringen nodig met betrekking tot autonomie, prestaties en ook geluid en trillingen (NVH). Het tweede deel van de thesis betreft die laatste uitdaging en bestaat uit het experimentele onderzoek van geluid en trillingen op een 8/6 variabelereluctantiemachine (SRM) ontwikkeld voor elektrische voertuigen.De NVH-problemen van SRM's beperken hun gebruik in automobiele en andere toepassingen enonderzoek wordt erover voortgezet. Vele wetenschappelijke artikelen focussen toch op modale analyse of gedetailleerde fenomenen terwijl een globale evaluatie van NVH aspecten in SRM's in gewone operatiecondities nauwelijks wordt gemaakt. Hetzelfde geldt voor het gebruik van reproduceerbare geluidsmetrieken. Een globale en vrij vlugge experimentele methode is hier voorgesteld om het NVH gedrag te schatten. Testen worden in transiënte situaties uitgevoerd om een brede frequentieband te exciteren, indien mogelijk met voortdurend variërende condities. De gemeten fasestroom, trilling en geluid worden als kleurmappen geplot om het verschil tussen beïnvloede en niet geaffecteerde frequenties te vergemakkelijken en met de berekende akoestische luidheid en scherpte vergeleken.Bovendien heeft de implementatie van een sneller bemonsterd stroomhysteresisregelaar geleid tot een verbetering van de regulatie- en akoestische kwaliteit door de amplitude van de stroomrimpeling en de excitatie van resonantiefrequenties te verminderen. De testresultaten tonen dat de schakelfrequentie voldoende hoog moet zijn om de excitatie van de ovale vervormingsmode te vermijden, maar niet te hoog om de scherpte van het geluid te beperken. De amplitude van de rimpel beïnvloedt ook de luidheid en daarvoor moet in aanmerking worden genomen. Bijgevolg zou ‘soft chopping'mode, of een lagere spanning op de DC-bus bij lage toerentallen, met een relatief klein hysteresisband beter worden gebruikt. Uiteindelijk wordt het geval van een openfasefout bestudeerd en onthult versterkte gelijke frequentievolgorden in de trilling- en geluidplots.
Doctorat en Sciences de l'ingénieur et technologie
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Ladufjäll, Erik. "Utvärdering av en Magnetic Harmonic Traction Drive." Thesis, KTH, Maskinkonstruktion (Inst.), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-100684.
Full textI denna rapport utreds ett nytt växelkoncept med hjälp av magnetiska simuleringar baserade på finita element metoden (FEM) med programmen MagNet och Ansys samt mekaniska FEMsimuleringar med programmet Abaqus. Växelkonceptet utreds med avseende på maximalt momentkapacitet, vridstyvhet, utväxling och verkningsgrad. ABB Corporate Research har föreslagit ett nytt växelkoncept som har potentialen att bli billigare än existerande växlar. Det nya konceptet heter Magnetic Harmonic Traction Drive och använder sig av samma principer som en traditionell harmonic drive för att åstadkomma en högt utväxlad växellåda. I konceptet ersätts våggeneratorn som används i traditionella harmonic drives med magneter och istället för kuggtänder används friktion för att överföra moment. Huvudkomponenterna i växellådan är magneter, flexspline, circular spline och magnetic portion. Målet med växeln är att kunna överföra ett moment på 5 Nm, ha en vridstyvhet på 2000 Nm/rad, ha en utväxling på 100, ha en verkningsgrad över 50 % och ha en maximal diameter på 100 mm. En modell av växelkonceptet byggs upp i FEM-programmet MagNet för att utvärdera valet av magneter som används i växelkonceptet samt storleken på den magnetiska portionen. Resultaten från MagNet visar att en kraft på 120 N kan förväntas från magneterna som används i växelkonceptet samt vilken fördelning av kraften som fås. Förluster på grund av hysteres och eddy currents beräknas vara större än den ideala ingående effekten vilket ger en verkningsgrad på mindre än 50 %. Finit elementmetod-programmet Ansys används för att validera resultaten från MagNet. En jämförelse mellan programmen visar på en viss överensstämmelse då totala krafterna jämförs men dålig överensstämmelse då kraftfördelningen jämförs. FEM-programmet Abaqus används för att simulera de mekaniska egenskaperna hos växelkonceptet. En model av konceptet byggs upp med hjälp av flexsplinen och circular splinen. Krafter och kraftfördelningar förs in modellen genom att använda resultaten från MagNet simuleringarna. Abaqus modellen förutser ett maximalt moment på 1.5 Nm, en vridstyvhet på över 2000 Nm/rad och en utväxling på cirka 80. Resultaten från simuleringar används för att ge rekommendationer till konstruktionsarbetet av växeln. Rekommendationer som ges är vilka magneter som bör användas, vilken form de skall ha, vilken storlek de bör ha och av vilket material de bör vara tillverkade av. Rekommendationer för flexsplinen och circular splinen ges också i form av rekommenderade material och materialtjocklekar. Rekommendationer och förslag på framtida arbeten på växeln ges också.
Moloney, William J. "Applying simulation techniques to train railway traction drivers." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8370/.
Full textCornwell, William Lincoln. "Switching Frequency Effects on Traction Drive System Efficiency." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/34983.
Full textMaster of Science
Ishrat, Tajrin. "Slip control for trains using induction motor drive." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/199908/1/Tajrin_Ishrat_Thesis.pdf.
Full textEwin, Nathan. "Traction control for electric vehicles with independently driven wheels." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:dfc99786-fe17-4225-bd91-3ab83416981f.
Full textDabhi, Meet, and Karthik Ramanan Vaidyanathan. "Automation and synchronizationof traction assistance devices toimprove traction and steerability ofa construction truck." Thesis, KTH, Fordonsdynamik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209198.
Full textLI, Zhen. "Analysis of dropbox assisted hydraulic traction." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209486.
Full textDen presenterade forskningen studerade fördelar och nackdelar med ett hydraulisk hjälpsystem för fordonsdrift (HAD) för en 25 meter lång timmerlastbil. Syftet var att undersöka hur drivlinans prestanda med avseende på energy, ekonomi och miljöpåverkan, påverkas av de adderade komponenterna, de hydrauliska ackumulatorerna. Hjälpsystemet är helt enkelt ett hydrostatiskt transmissionssystem. Idealt, kan bränsleförbrukning och kostnad reduceras genom att använda ackumulatorer i systemet. För att verifiera denna hypotes, har modell-baserade simuleringar utförts och resultaten har analyserats för konstantfartskörning och en körcykel med upprepade accelerationer och inbromsningar. Dessutom, har ett HAD-system med och utan ackumulator jämförts. Simuleringsresultaten visar att ett system med ackumulatorer förbrukar ca 14% mindre bränsle än ett system utan ackumulatorer. Ett ackumulatorstött system ger också 15% högre framdrivningseffekt vid accelereration. I avhandlingen dimensionera också storleken på ackumulatorerna, både teoretiskt och med simuleringar. Det finns en liten skillnad mellan resultaten från den teoretiska beräkningen och simuleringarna, som kan bero på att volymetriska förlusterna inte har tagits med i simuleringarna. En ackumulator med en storlek på 57 L visar sig ha den mest effektiva storleken för den studerade körcykeln. Vid högre körhastigheter, kommer verkningsgraden att minska till viss del. Inga fysiska tester har gjorts, men de kommer att utföras i framtiden.
Roebuck, C. A. "Testing and frequency response analysis of an electric vehicle traction drive." Thesis, Coventry University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384599.
Full textGalaï, Dol Lilia. "Alimentation et commande de drivers à très forte isolation galvanique pour des convertisseurs multi-niveaux dédiés à la traction ferroviaire." Thesis, Cachan, Ecole normale supérieure, 2014. http://www.theses.fr/2014DENS0002/document.
Full textThis project is the result of collaboration between the EPI team of the SATIE laboratory at ENS Cachan, the LAPLACE laboratory and ALSTOM Transport in the ANR "CONCIGI HT" project. Research in the railway traction area aims to reduce the increasing size and weight of the power train. Today, the desire to reduce travel time is complemented by the desire to reduce power consumption- it is an important information for the design of traction chains. The objective of this project is to replace parts of the locomotive power supply systems to reduce their size by 30%, thus to reduce the power consumption and increase by 8.5% the number of passengers. The work presented in this thesis focuses on the design and study of the drivers power supply for HV SiC semiconductor (up to a 10 kV transient voltage). The peculiarity of these semiconductors is their application: they are placed in multi-level converters in order to replace the 25 kV / 3 kV, 50 Hz transformers currently used for rail traction. The main constraint is the dielectric strength that reaches a maximum of 60 kV due to transient present on the catenary. So, the Double Galvanic Insulation Transformer (DGIT) has been developed to adapt to the need of holding dual dielectric (10 kV and 60 kV). In a first step, a structure for the dual galvanic insulation has been developed with the objective to minimize its size and weight. Its spatial and geometrical arrangements were also taken into account (as well as many parameters both relevant and contradictory), in order to obtain the optimal system and common and differential mode distributed capacities observing the high dielectric strength. In a second step a study of the DGIT adapted power supply has been completed and tested. The combination of DGIT inductive behavior, the driver low power and the multi-level aspect, involves an atypical work of this power supply converter. For each of these parts, a structural, frequencial and electrical study was performed in order to achieve the maximum optimal device in terms of volume, weight and loss, with respect to the main constraint of VHV (Very High Voltage). Finally, in a third step we studied the possibility of subtituing the optical fibers currently used for the control of lighters with a system based on radio-frequency transmission
Sun, Tianfu. "Efficiency optimised control of Interior Permanent Magnet Synchronous Machine (IPMSM) drives for electric vehicle tractions." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13610/.
Full textKouns, 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.
Full textMaster of Science
Zhang, Zhendong. "PERMANENT MAGNET SYNCHRONOUS MACHINE BASED TRACTION DRIVE DESIGN FOR HYBRID SCOOTER CONSIDERING CONTROL NONLINEARITIES AND COMPENSATIONS." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1376667289.
Full textKnezevic, Zeljko. "Optimization of the tractive performance of four-wheel-drive tractors, an experimental study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0026/MQ27016.pdf.
Full textKnezevic, Zeljko Carleton University Dissertation Engineering Mechanical and Aerospace. "Optimization of the tractive performance of four-wheel-drive tractors - an experimental study." Ottawa, 1997.
Find full textGalai, Dol Lilia. "Alimentation et commande de drivers à très forte isolation galvanique pour des convertisseurs multi-niveaux dédiés à la traction ferroviaire." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2014. http://tel.archives-ouvertes.fr/tel-00983202.
Full textŠponar, Pavel. "Návrh laboratorního modelu mostového jeřábu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229752.
Full textHuang, Yunfei [Verfasser], Gerhard [Gutachter] Gompper, and Dirk [Gutachter] Witthaut. "Advanced data analysis for traction force microscopy and data-driven discovery of physical equations / Yunfei Huang ; Gutachter: Gerhard Gompper, Dirk Witthaut." Köln : Universitäts- und Stadtbibliothek Köln, 2020. http://d-nb.info/1230059822/34.
Full textLefebvre, Gaëtan. "Commande de machine asynchrone sans capteur de vitesse : Application à la traction ferroviaire." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI129/document.
Full textThe problem of speed sensorless control of induction machine is a well-studied problem in the field of automatic control and electrical engineering. This work addresses the problem of the feasibility of induction machine control over the whole speed range and for any type of induction machine, aiming at being used in a railway application. An intensive study of observability has defined a continuous quantitative measurement of the speed observability, named observability index. An observer was developped to confirme the correspondence between low-observability index areas and poor observation quality. The observability index defined in this thesis is thus a way to predict the observation performance of systems. The main originality of the work presented in this thesis is the use of this observability index in the induction machine speed sensorless drive. By taking advantage of the degree of freedom given by the variation of the flux amplitude, we propose to guarantee the observability index value above a given threshold while respecting the other constraints of the control. The speed observation becomes precise over the entire speed range, and a long time operation is possible on any point, without interfering with torque regulation. Experiments on real-time simulator confirm these results, including when slipping and sliding occurs. The electrical parameter observation is also studied to ensure the accuracy of speed observation. For this, the sensitivity of the speed observation to electrical parameter variations and the observability of these parameters are studied, leading to the definition of the electrical parameter observation strategy. The testings on power bench, and in real application on a regional train, validate the performance of the speed sensorless drive proposed on the entire speed range, and its suitability to the constraints of a railway application
Siegel, Ronny. "Automatisierte Konfiguration des Antriebsstrangs bei der Projektierung dieselelektrischer Schienenfahrzeuge." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-176647.
Full textKwangwaropas, Mongkol. "An electromechanical aid for improving the performance of tractor drivers in post establishment row-crop operations." Thesis, Cranfield University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241240.
Full textvon, Pfingsten Georg Constantin Friedrich [Verfasser]. "The Induction Machine as Speed Variable Drive for Automotive Traction Applications : Advanced Loss Calculation Methods for Improved Design / Georg Constantin Friedrich von Pfingsten." Aachen : Shaker, 2018. http://d-nb.info/1161313702/34.
Full textDélémontey, Bertrand. "Contribution à la commande des entraînements asynchrones de forte puissance : application au problème de traction." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL154N.
Full textSandulescu, Paul. "Modélisation et commande d’un système à trois phases indépendantes à double fonctionnalité : Traction Électrique et Chargeur Forte Puissance pour application automobile." Thesis, Paris, ENSAM, 2013. http://www.theses.fr/2013ENAM0034/document.
Full textFor an automotive application, a six leg-VSI connected to a three-phase open-end winding machine has the ability to offer a dual-function. In this case, an additional zero-sequence component, usually absent when a star-coupling is used, needs to be controlled. Firstly, a study, modeling and control of a multi-leg inverter are proposed. Secondly, control structures capable of handling the presence of zero-sequence components are investigated. The conventional control algorithms applied to the inverter are analyzed and an original vector control strategy, called Z-SVM, capable to cancel the high frequency zero-sequence current is developed. Finally, it is shown how the management of the zero-sequence components enhances the performance of the drive at low as well as at high-speed, corresponding on the areas of the torque-speed characteristics before and after flux weakening. The proposed solutions are validated on an experimental test bench consisting of a machine prototype especially developed for automotive application and powered by a six-leg inverter controlled by an FPGA-based device. The proposed strategies are compared in terms of performance and computational complexity
Klembara, Lukáš. "Paletový dopravník." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228664.
Full textChen, Jian Hua. "Dynamics and parameter identification of a tractor semitrailer-driver closed-loop system using the simulated annealing optimization approach." Thèse, Montréal : École de technologie supérieure, 2007. http://proquest.umi.com/pqdweb?did=1407502071&sid=5&Fmt=2&clientId=46962&RQT=309&VName=PQD.
Full text"Thesis submitted to l'École de technologie supérieure in partial fulfillment of the requirements for the master's degree in mechanical engineering M.Eng.". Bibliogr. : f. ([92]-96). Également disponible en version électronique. CaQMUQET
Osinenko, Pavel. "Optimal slip control for tractors with feedback of drive torque." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-155357.
Full textPrudík, Martin. "Trakční měnič pro motorové kolo se stejnosměrným motorem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219005.
Full textFilipec, Petr. "Návrh pohonu elektrické tříkolky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229809.
Full textTorp, Emil, and Patrik Önnegren. "Driving Cycle Generation Using Statistical Analysis and Markov Chains." Thesis, Linköpings universitet, Fordonssystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-94147.
Full textEn körcykel är en beskriving av hur hastigheten för ett fordon ändras under en körning. Körcykler används bland annat till att miljöklassa bilar och för att utvärdera fordonsprestanda. Olika metoder för att generera stokastiska körcykler baserade på verklig data har använts runt om i världen, men det har varit svårt att efterlikna naturliga körcykler. Möjligheten att generera stokastiska körcykler som representerar en uppsättning naturliga körcykler studeras. Data från över 500 körcykler bearbetas och kategoriseras. Dessa används för att skapa överergångsmatriser där varje element motsvarar ett visst tillstånd, med hastighet och acceleration som tillståndsvariabler. Matrisen tillsammans med teorin om Markovkedjor används för att generera stokastiska körcykler. De genererade körcyklerna valideras med hjälp percentilgränser för ett antal karaktäristiska variabler som beräknats för de naturliga körcyklerna. Hastighets- och accelerationsfördelningen hos de genererade körcyklerna studeras och jämförs med de naturliga körcyklerna för att säkerställa att de är representativa. Statistiska egenskaper jämfördes och de genererade körcyklerna visade sig likna den ursprungliga uppsättningen körcykler. Fyra olika metoder används för att bestämma vilka statistiska variabler som beskriver de naturliga körcyklerna. Två av metoderna använder regressionsanalys. Hierarkisk klustring av statistiska variabler föreslås som ett tredje alternativ. Den sista metoden kombinerar klusteranalysen med regressionsanalysen. Hela processen är automatiserad och ett grafiskt användargränssnitt har utvecklats i Matlab för att underlätta användningen av programmet.
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.
Full textThesis 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.
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/35328.
Full textThesis 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.
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.
Full textPascal, Jean-Pierre. "Etude de circuits d'aide à la commutation de thyristors GTO montés en série pour des applications à la traction ferroviaire." Paris 6, 1986. http://www.theses.fr/1986PA066273.
Full textРябов, Євген Сергійович. "Безредукторний тяговий привод на основі реактивного індукторного двигуна з аксіальним магнітним потоком для швидкісного електрорухомого складу." Thesis, СПДФО Миронов М. В, 2011. http://repository.kpi.kharkov.ua/handle/KhPI-Press/5307.
Full textThe thesis is dedicated to the working out of scientific bases of creation gearless traction drive based on transverse switched reluctance motor for speed electrical rolling stock in terms of linking its properties and working parameters. By analyzing of the force and power parameters of traction electric motors, used in the gearless traction drive, and comparing the performances of structural mechanisms to transfer torque suggested the creation of gearless traction drive based on the jet engine based on the inductor axial magnetic flux. The mathematical model for the electromagnetic torque inductor jet engine axial magnetic flux is worked out. The generalized traction drive simulation model that is studied, combines semiconductor transducer model, is coupled with the drive system and inductor model of transverse switched reluctance motor, which is based on mathematical model. The model of torsion oscillations of the mechanical drive is worked out. Method for energy parameters investigated traction drive is proposed. Together, the proposed model algorithmic complex design of the direct drive traction based on transverse switched reluctance motor. The conceptual design of high-speed electric trains is worked out. Traction drive is synthesized using the above algorithmic complex and determined its performance and indicators
Guy, Ianto John. "An analysis of the interaction between the front and rear axles of a four-wheel-drive tractor, and its contribution to power delivery efficiency." Thesis, Harper Adams University College, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542600.
Full textВащенко, Ярослав Васильович. "Удосконалення технології діагностування стану тягового асинхронного електроприводу рухомого складу." Thesis, Український державний університет залізничного транспорту, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22714.
Full textThesis for a candidate degree by speciality 05.22.09 – Electric transport. – National Technical University "Kharkiv Polytechnical Institute", Kharkiv, 2016. Dissertation is devoted to solving scientific and technical targets improving technology of diagnosing state for traction asynchronous drive electric rolling stock by detecting abnormally dangerous and emergency modes operation and their identification, which allowed to develop methods for early detection and prevention of drive elements failure when it malfunctions occur, as well as minimizing operational costs. The analysis of existing technologies, techniques and methods for diagnosis and protection traction asynchronous drive showed that the most promising in comparison with the existing protection systems of rolling stock, which operate on the principle of control deviations of parameters and prevent the development of emergency modes, there are diagnostics technology provides detection and localization of failures in the early stages. Improved diagnosis technology based on the object model of traction induction motor by using the extended Kalman filter that can detect damage to the stator and rotor windings of traction induction motor, for which proposed to use statistical criteria in real time for assessing its effectiveness To automate the decision approach applied mathematical algorithm simulation based on artificial neural networks for diagnostic feature variable speed oscillation induction motor rotor frequency, with which is possible to exercise effective intellectual automatic fault detection when using simple logical principles is not enough. Developed diagnosis methods are expand existing protection technologies including real technical state of asynchronous traction electric drive and allowing to perform timely malfunctions detection and automatic decision-making to prevent further development of emergency operation, thereby increasing efficiency and reliability traction drive operation.
Ващенко, Ярослав Васильович. "Удосконалення технології діагностування стану тягового асинхронного електроприводу рухомого складу." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22713.
Full textThesis for a candidate degree by speciality 05.22.09 – Electric transport. – National Technical University "Kharkiv Polytechnical Institute", Kharkiv, 2016. Dissertation is devoted to solving scientific and technical targets improving technology of diagnosing state for traction asynchronous drive electric rolling stock by detecting abnormally dangerous and emergency modes operation and their identification, which allowed to develop methods for early detection and prevention of drive elements failure when it malfunctions occur, as well as minimizing operational costs. The analysis of existing technologies, techniques and methods for diagnosis and protection traction asynchronous drive showed that the most promising in comparison with the existing protection systems of rolling stock, which operate on the principle of control deviations of parameters and prevent the development of emergency modes, there are diagnostics technology provides detection and localization of failures in the early stages. Improved diagnosis technology based on the object model of traction induction motor by using the extended Kalman filter that can detect damage to the stator and rotor windings of traction induction motor, for which proposed to use statistical criteria in real time for assessing its effectiveness To automate the decision approach applied mathematical algorithm simulation based on artificial neural networks for diagnostic feature variable speed oscillation induction motor rotor frequency, with which is possible to exercise effective intellectual automatic fault detection when using simple logical principles is not enough. Developed diagnosis methods are expand existing protection technologies including real technical state of asynchronous traction electric drive and allowing to perform timely malfunctions detection and automatic decision-making to prevent further development of emergency operation, thereby increasing efficiency and reliability traction drive operation.
Li, Tianpei. "Fault Diagnosis for Functional Safety in Electrified and Automated Vehicles." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587583790925718.
Full textPokálený, 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.
Full textШкурпела, Олександр Олександрович. "Підвищення ефективності тягового асинхронного електроприводу з автономним джерелом живлення." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/49154.
Full textThesis for a candidate degree by speciality 05.09.03 – Electrical complexes and systems. – National Technical University "Kharkov Politechnical Institute", Kharkiv, 2020. The dissertation is devoted to solving the scientific and practical problem of increasing the efficiency of traction asynchronous electric drive (TAED) rolling stock with autonomous power supply by the criterion of maximizing the ratio of moment to current (MTPA) by optimizing the control system of asynchronous motor (AM). The existing approaches to optimization with and without taking into account the influence of the magnetization characteristics of AM are considered. Among the disadvantages of the approach to optimization by the criterion of efficiency maximization is that it requires significant bench tests of the traction electric drive. The MTPA optimization criterion was chosen for further research. It is established that the existing approaches to optimization according to the MTPA criterion were created under the condition of full use of the autonomous voltage inverter and do not take into account the operating modes in the conditions of AM power limitation. The peculiarities of the study of TAED (based on modeling) are considered, which allowed to determine the structure of the simulation model and its necessary components. It is established that for a more in-depth analysis (based on modeling) of the processes occurring in TAED, including during non-standard modes, it is necessary: simulation model of the electrical and control part of TAED; simulation model of the mechanical part of the rolling stock, including the contact "wheel – rail"; simulation model of track profile. For research, a rolling stock with an autonomous power supply – a diesel train DEL-02 was chosen as a basic sample. The creation of simulation models of TAED, consistent with the results of TAED tests of the basic sample allowed to assess the adequacy of the results of the study of optimized TAED. The sequence of the study was implemented according to the following algorithm: to obtain an adequate model of TAED, the control system of TAED of the basic sample was investigated; after verification of the simulation model in the control system, the structure and control algorithm of TAED were replaced, namely the replacement of the scalar control system with a vector system optimized by the MTPA criterion; the results of simulation modeling of train modes of optimized TAED are estimated. Simulation models of components and the general model of TAED which is adapted for carrying out researches on the chosen tasks are developed. The simulation model of the power supply is presented in a simplified way, because the transients of the diesel generator set have a much greater inertia than the processes of development of emergency and non-standard modes in the electrical and mechanical parts of TAED. In the simulation of the system autonomous voltage inverter – traction asynchronous motor (AIN – AM), the implementation of the nonlinearity of the magnetic circuit of the simulation model AM was checked by simulating the no-load experiment for eight values of the linear voltage AM. For evaluation, the obtained idling characteristic was compared with the results of bench tests of eight serial AM type AD906 (manufactured by SE "ZAVOD" ELEKTROVAZHMASH"), which allowed to display the statistical deviation of the parameters of existing samples of AM from the estimated not exceeding 5%. To confirm the adequacy of the general model of TAED, a comparative analysis of the simulation results and the results of train tests of the base sample when driving at a speed of 5 km / h and when accelerating to a speed of 50 km / h on a flat section of track. It is established that the deviation of the simulation results from the results of the experiment according to Fisher's F-test does not exceed 5%. When solving the problem of synthesis of AM control system optimized by MTPA criterion, analytical expressions for calculating the angle of position of AM current vector, value of modulus of flux coupling vector of AM rotor, taking into account change of supplied power value are offered. The choice of the method of approximation of the flux coupling characteristic of the AM rotor in the field weakening mode, obtained during the study of transients in the AIN – AM system in the field weakening mode, is substantiated. It is established that the approximation of the flux coupling characteristic of the traction motor type AD906 using a linear function leads to significant deviations of the engine power, namely to the level of 82.6% of the nominal, which in turn reduces the electromagnetic torque by 20%. It is established that when approximating the flux coupling characteristics by a composite function of two linear ones allows to reduce this effect, however, at the fracture site the characteristics disturb the power consumption and overload the induction motor by 4%. Approximation of the magnetization characteristic using a 4th order polynomial does not have such effects as the choice of the approximation method. It is established that without taking special measures to detect and stop excessive slippage in the wheel – rail contact, the development of frictional oscillations is accompanied by alternating values of the electromagnetic moment of AM, which exceed the allowable (1.2 – 1.5 times). Therefore, for TAED the mathematical description of the block of correction and distribution of the AM current depending on current rotational speeds of AM rotors is offered that allowed to limit acceleration of rotational frequencies, for control of dynamics of movement or creation of effective protection against excessive slipping of wheel pairs (boxing, yuz). The efficiency of such a system was studied in the simulation of train modes of operation when moving along the track with unsatisfactory conditions of traction of the wheel with the rail. It is established that the use of the correction and current distribution unit AM excludes excessive slippage of the wheelsets in the implementation of the ultimate in terms of traction. A simulated model of optimized TAED was developed and it was found that the use of optimization according to the MTPA criterion taking into account the amount of power supplied to AM allows to increase the electromagnetic torque of AM depending on the power limit from 2% to 53% in start-up mode and power factor by 17.6%. Thus, in the course of the study it was shown that the use of optimization according to the criterion of MTPA taking into account the amount of power supplied to the AM increases the efficiency of the autonomous traction drive.