Optimisation énergétique d'un véhicule hybride

Abstract : Technology advancements increase the complexity of energy systems which bring additional varieties of sources and possible architectures to choose. If the economic and ecological context is also included, the automobile industry is in_uenced to align their production to hybrid or battery electric vehicles that have sophisticated energy management system. Thus, researchers and designers have oriented their studies for system design, optimisation and energy management that take into consideration the constructor tendencies : i) increasing vehicle performances, ii) having less polluting vehicles by reducing fuel consumption and iii) decreasing the time needed for design and validation process. Against these problematics, an approach that assists the system designer to fully characterize the energy management system of a HEV is proposed. This characterization consists : i) choosing powertrain architecture, ii) component (units) sizing and iii) energy management controller. In order to accomplish these tasks, a functional energetic modelling method is proposed. Proposed functional modelling level has a level of abstraction _just necessary_ which permits to have energetic analysis for a series of use case. This method relies on local control loops, a global controller and basic equations and it allows to have a modular optimisation for any architecture changes. The second-stage in the validation is completed by adapting the functional model in order to obtain the high-level controller for the multi-physical level with two offered steps : i) adjustment the functional elements' parameters and ii) interconnection the functional and multi-physical models. After the illustration of the demonstrator of a HEV, three strategies for energy management is proposed : i) based on rules, ii) based on PFC with power sharing function and iii) based on PFC with booster function. The proposed energy management strategies then compared by performance indicators (fuel consumption, number of on/off cycles of engine powertrain and corrected fuel consumption with variation of state of charge of electrical storage) with defined use cases.
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Mert Mokukcu. Optimisation énergétique d'un véhicule hybride. Autre [cs.OH]. Université Paris-Saclay, 2018. Français. ⟨NNT : 2018SACLC066⟩. ⟨tel-01932977⟩

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