Cette thèse s’inscrit dans la problématique mondiale qu’est la gestion de l’énergie en se focalisant sur les batteries pour véhicules électriques ou hybrides. Celles-ci subissent des contraintes particulièrement sévères qui les font s’échauffer rapidement. Afin d’éviter le risque d’un vieillissement prématuré tout en limitant les surcoûts, il convient de dimensionner la batterie et son système de refroidissement de manière optimale. Les modèles thermiques proposés permettent ce dimensionnement optimal. Le modèle utilisé pour les pertes électriques a été amélioré pour être désormais stable lors de simulations de longs trajets. L’analyse fine du fort couplage entre les phénomènes thermiques et électrochimiques a mené à de nouvelles méthodes de caractérisations. Le « découplage » de ces phénomènes permet d’améliorer grandement les prédictions des modèles, notamment dans des plages de fonctionnement très contraignantes (basse température et très forte puissance). La précision est garantie à 1 °C, même pour des simulations de plusieurs heures. / This PhD thesis is included in the global energy-management issue. lts focus is on battery packs for electric or hybrid vehicles. The latter are bound to heat quickly because they're receiving high stresses during operation. Thus, to avoid accelerating the aging process while maintaining a minimal cost, the battery and its cooling system have to be sized optimally. The proposed thermal models can be used to reach this optimal sizing. The electrical losses model has been improved to become stable during the simulations of long driving cycles. The precise study of the strong coupling between electrochemical and thermal behaviors has led to new characterization methods. The "decoupling" of these phenomena improves significantly the models predictions, especially in very stressed operation ranges (low temperature and high power).The precision is better than 1° C, even for several-hours simulations.

La quasi-totalité des études de machines synchrones à aimants permanents (MSAP) pour les applications aux véhicules hybrides concernent les performances uniquement sur quelques points particuliers d’un cycle de fonctionnement du véhicule (le point de base, le point à grande vitesse ou le point le plus sollicité). Cependant, ces machines électriques fonctionnent souvent à différents couples et à différentes vitesses. Cette thèse s’intéresse donc à l’étude des performances de MSAP sur l’ensemble d’un cycle de fonctionnement en vue de les optimiser sur cycle. Durant cette thèse, l’auteur a contribué à développer les modèles de couple, de défluxage, de pertes cuivre et de pertes magnétiques et les méthodes de calcul de ces pertes à vide et en charge pour les quatre MSAP dont trois machines à concentration de flux et une machine à aimants en surface du rotor et pour trois cycles de fonctionnement : NEDC, Artemis-Urbain et Artemis-Routier. Une validation expérimentale de ces modèles a été effectuée sur un banc d’essai moteur avec deux prototypes de MSAP. Ensuite, les MSAP ont été dimensionnées en vue d’une minimisation des pertes sur cycle et du courant efficace du point de base. Cette combinaison a pour but d’augmenter le rendement de la machine électrique et de minimiser la dimension de l’onduleur de tension associée. Ce problème d’optimisation multi-objectif a été réalisé en utilisant l'algorithme génétique, Non-Dominated Sorting Genetic Algorithm (NSGA-II). Ainsi, un Front de Pareto des solutions optimales peut être déduit. Les impacts des modèles de pertes (à vide et en charge) sur l’optimisation sur cycle des machines sont étudiés et l’intérêt de chaque modèle est présenté. Les modèles et méthodes de calcul proposés peuvent être appliqués à tous les cycles de fonctionnement, à différentes MSAP et à différentes applications. / Almost all studies of permanent magnet synchronous machines (PMSM) for for hybrid vehicle applications relate to their performances on a specific point of a driving cycle of the vehicle (the base point, the point at high speed or the most used point). However, these machines often operate at different torques and at different speeds. This thesis studies therefore PMSM performances in order to optimize during an entire driving cycle. In this thesis, the author contributed to develop models of torque, field weakening, copper losses and iron losses and methods of calculating these losses at no-load and at load for four MSAP (three concentrated flux machine and a surface mounted PMSM) and for three driving cycles (New Eurepean Driving Cycle, Artemis-Urban and Artemis-Road). An experimental validation of these models was realized on a test bench with two prototypes of MSAP. Then, the MSAP were sized for a minimization of average power losses during the cycle and of the RMS current at the base point. This combination is designed to increase the efficiency of the electrical machine and minimize the size of the associated voltage inverter. This problem of multi-objective optimization was performed using the genetic algorithm, Non-Dominated Sorting Genetic Algorithm (NSGA-II). Thus, a Pareto front of optimal solutions can be derived. The impacts of loss models (at no-load and at load) on the PMSM optimization during the cycle are studied and the interest of each model is presented. Models and calculation methods proposed in this thesis can be applied to all cycles, at different MSAP and for other applications.

Orientador: Flávia Luciane Consoni de Mello / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Geociências / Made available in DSpace on 2018-08-27T17:31:56Z (GMT). No. of bitstreams: 1 Barassa_Edgar_M.pdf: 1763490 bytes, checksum: 150d4a1e9b699993d6ea840d34588afa (MD5) Previous issue date: 2015 / Resumo: A indústria automobilística global está passando por um período de reestruturação, a qual deverá contemplar o uso de tecnologias alternativas às tradicionais com o propósito de aumentar a eficiência energética dos veículos e paralelamente reduzir as emissões de poluentes. Neste contexto, os veículos elétricos (VE) caracterizam-se como uma das alternativas possíveis frente a este cenário de novas demandas. Essa dissertação avança nesta temática ao investigar, descrever e analisar a trajetória histórica, tecnológica e de mercado do veículo elétrico. Para o aprofundamento ao tema, observou-se a competição tecnológica pelo sistema de propulsão dominante, que ocorreu entre: 1) o motor a vapor; 2) os conversores eletromecânicos de energia (motores elétricos); e 3) os motores a combustão interna, sendo o último caracterizado como vencedor. Ao longo dos 50 anos que seguiriam a partir do fechamento do motor a combustão interna em 1920 como paradigma tecnológico, os veículos elétricos praticamente desaparecem. O projeto do veículo elétrico só foi retomado a partir da década de 1970, com os estímulos vindos da agenda ambiental, da poluição do ar e seus impactos na saúde pública e do aumento do uso dos combustíveis fósseis. Porém, será a partir do século XXI que o segmento dos veículos elétricos irá ascender tanto do lado tecnológico quanto de mercado. Foram observadas três configurações mais promissoras a respeito da tecnologia dos veículos elétricos: a bateria, híbrido e a células a combustíveis. As três configurações apresentam barreiras e desafios, os quais estão sendo sistematicamente trabalhados pelas empresas que estão dispensando esforços para o segmento. Isto é observado com base na evolução das patentes publicadas sobre veículos elétricos e suas tecnologias. Sendo assim, é possível, ainda, constatar a evolução das vendas dos veículos elétricos nos Estados Unidos, Japão e em um pequeno número de países europeus. O êxito mercadológico fica para os modelos híbridos, com vendas sete vezes superiores aos veículos elétricos a bateria. Transpondo esta discussão para o contexto brasileiro atual, salientamos que o Brasil possui os atores (órgãos governamentais, empresas e instituições públicas de pesquisa) e condições (mercado automobilístico consolidado e know-how) necessários para a formação de um complexo automobilístico voltado aos veículos elétricos, porém as ações em curso no país são pontuais. Ainda que tais iniciativas possam favorecer a criação de competências específicas para o veículo elétrico, elas se mostram pouco efetivas para criar as condições que permitam o Brasil ocupar posição de destaque neste mercado. Ao menos que se projete um rol de políticas claras de apoio e suporte ao desenvolvimento de tecnologias locais destinadas ao veículo elétrico, poucos avanços serão conquistados neste campo tecnológico / Abstract: Automobile industry across the world is undergoing structural change. Advances in emission regulations and the effects of oil price fluctuations are forcing carmakers towards new product programs that use new technologies in order to increase the energy efficiency of vehicles, reduce emissions and decrease environment impacts. In this context, electric vehicles have been considered as one of the possible alternatives for this scenario of new demands. This dissertation advances on this topic to investigate, describe and analyze the historical and technological trajectories and market behavior of the electric vehicle. It was observed a technological competition by dominant propulsion system, that had occurred among: 1) the steam engine; 2) electromechanical energy converters (electric motors); and 3) internal combustion engines, the last being characterized as the most used. Throughout the following 50 years from the engine closure based on the internal combustion in 1920, electric vehicles practically disappeared. The electric vehicle project was only resumed after the 1970s, due to the environmental agenda, the air pollution and its impacts on public health and the increase of fossil fuels prices. However, in the 21st century, the segment of electric vehicles has ascended in both technological and market fields. Therefore, it is possible to identify the three most promising settings about electric vehicle technology: battery electric vehicle, hybrid vehicle and fuel cells vehicle. The three configurations have obstacles and challenges, which are being systematically tackled by companies that are dispensing efforts for the segment, based on the evolution of patents published concerning the electric vehicles and their technologies. Thus, it is possible to verify the evolution of the electric vehicles selling in the United States, Japan and a few European countries. The world market success is related to hybrids models, selling seven times more than the battery electric vehicle. In the current Brazilian context, the country has the government agencies, companies and public research intuitions and had the conditions (mature automobile market and know-how) for the formation of an automobile complex of electric vehicles, with off actions. Although such initiatives may favor the creation of specific competencies for electric vehicle, they show little effective to create conditions for the Brazil occupy a prominent position in this market. It should be projected a list clear policies to support the development of local technologies for the electric vehicle, or few advances will be achieved in this technological field / Mestrado / Politica Cientifica e Tecnologica / Mestre em Política Científica e Tecnológica

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The most used type of the secondary energy sources is the lead-acid accumulator today. It is also used as a propulsion in hybrid electric vehicles. Functional principle stayed same as in foundation time, only parameters are still improving. Lifetime of lead-acid accumulator is influenced by used separator. The work deals with the description of properties of lead acid separators, methods of testing and evaluation of the suitability for use.

This work aims on acumulators for hybrid vehicles and deals particularly with research of inner-resistance of the lead-acid batteries. There is a brief characterization of hybrid cars in first part of the tesis. Second part is dealing with design of experimental measurement setup for measurement of lead-acid electrochemical cells. Set of experiments on several cells was performed, description of experiments and results in graphical form are present.

Hybrid electric vehicles use lead acid batteries operating under partial charge. Battery life of these batteries is dependent on the speed of development of lead sulphate (PbSO4) to the negative electrodes. Different admixtures are affected battery life. This work deals with the influence of titanium dioxide on the negative active material in lead battery. Mainly devoted to the influence of the applied pressure.

Lead-acid batteries are most used secondary electrochemical power sources. Their basic principle has remained the same for several years; only the operating parameters are in development. Lead-acid batteries are used in hybrid electric vehicles (HEV), which operates in the partial charge PSoC. Sulphation is one of the possible failures lead-acid batteries in the HEV, especially the negative electrode. By adding additives to the negative active mass can reduce the rate of sulphation and increase ability to accept an electrical charge by negative electrode.

In this work is proposed the generalized powertrain of the parallel hybrid car. The powertrain is composed from the sub-models of the power sources. Each sub-model is described by the quasi-static modeling. For given routes is computed the power demand. Based on the derived power demand, three energy management systems are tested. First system is based on heuristic rules. The second one use more sophisticated control algorithms - the optimization method. Main idea is based on minimum principle, when the control algorithm tries to minimize the cost function (fuel use, emission). The last one is based on the equivalent consumption minimization strategy.

This article explores the potential of using real-world driving patterns to derive PHEV and BEV utility factors and evaluates how different travel and recharging behaviours affect the calculation of the standard SAE J2841 utility factor. The study relies on six datasets of driving data collected monitoring 508,607 conventional fuel vehicles in six European areas and a dataset of synthetic data from 700,000 vehicles in a seventh European area. Sources representing the actual driving behaviour of PHEV together with the WLTP European utility factor are adopted as term of comparison. The results show that different datasets of driving data can yield to different estimates of the utility factor. The SAE J2841 standard method results to be representative of a large variety of behaviours of PHEVs and BEVs' drivers, characterised by a fully-charged battery at the beginning of the trip sequence, thus being representative for fuel economy and emission estimates in the early phase deployment of EVs, charged at home and overnight. However the results show that the SAE J2841 utility factor might need to be revised to account for more complex future scenarios, such as necessity-driven recharge behaviour with less than one recharge per day or a fully deployed recharge infrastructure with more than one recharge per day.