Intensive research is carried out in the hybrid electric vehicle (HEV) sector to find new concepts for reducing fuel consumption and emissions. At the same time, comfort and fun-to-drive have to be improved. Different hybrid vehicle concepts are suited for various applications. Despite of the many different resulting requirements the additional effort for the realization of a hybrid vehicle has to be minimized. The key to a minimal effort is to reach high quantities and therefore benefit from the economy of scales. Hybrid components, like electric drives, not only have to fulfill the technical requirements but also have to be applicable to many different hybrid vehicle concepts. The foundation for the comparison of different hybrid vehicle concepts lies in simulation and optimization techniques. Mathematical models of the different components combustion engine, transmission, battery and electric drive are completed by an adaptive operation strategy. Using a simulation environment for hybrid vehicles, fuel consumption and driving performance can be determined for different hybrid vehicle concepts and given sets of hybrid components. With these results a certain benefit and effort can be assigned to every combination of hybrid vehicle concept and hybrid components. Data based models are created to link design parameters for hybrid components directly to effort and benefit. Using these, a suitable optimization algorithm is used to determine the effort/ benefit Pareto front for every hybrid vehicle concept. The Pareto fronts are an objective way to compare different hybrid vehicle concepts. Furthermore they contain the hybrid components design parameters that lead to the best overall results for every hybrid vehicle concept. Using evolutionary algorithms the best compromises between additional effort and benefit are computed for every remaining hybrid vehicle concept. The Pareto fronts contain information about benefit, additional effort and important design parameters for the hybrid components needed to realize a specific hybrid vehicle. Therefore they can be used in two different ways. Firstly to compare different hybrid vehicle concepts and secondly to define a modular construction kit of standardized electric drives.


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    Title :

    Effort/benefit based comparison of different hybrid vehicle concepts for standardization of electric drives


    Contributors:


    Publication date :

    2009


    Size :

    13 Seiten, 12 Bilder, 3 Tabellen, 5 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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