With the topic of plug-in HEV (Hybrid Electric Vehicles) city buses, the highly coupled optimization problem is studied for finding the most cost efficient compromise between investing in onboard electric powertrain components and installing a charging infrastructure along the bus line. It is described how convex optimization can be used to find the optimal battery sizing for a series HEV with fixed engine and generator unit and a fixed charging infrastructure along the bus line. The novelty of the proposed optimization approach is that both the battery sizing and the energy management strategy are optimized simultaneously by solving a convex problem. In the optimization approach the power characteristics of the engine-generator unit are approximated by a convex, second order polynomial, and the convex battery model assumes quadratic losses. An example is also presented for a specific bus line, showing the dependence between the optimal battery sizing and the number of charging stations on the bus line.


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    Title :

    Convex optimization of charging infrastructure design and component sizing of a plug-in series HEV powertrain


    Contributors:


    Publication date :

    2011


    Size :

    6 Seiten, 5 Bilder, 2 Tabellen, 10 Quellen




    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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