Hyundai motor company developed a fuel cell hybrid electric vehicle(FCHEV) which is powered by a fuel cell system operating near ambient pressure and a Ni-MH battery system which is connected to the fuel cell output power bus through a high power bi-directional DC/DC converter. The Ni-MH battery system assists the fuel cell system when the vehicle needs a lot of power to accelerate and the power, which is generated by regenerative braking from the traction motor when the vehicle speed is decreasing, is used to charge the batteries to improve vehicle efficiency. To do this, the bi-directional dc/dc converter plays a key role, because the control of power distribution should be implemented by proper operations of the bi-directional dc/dc converter. A vehicle simulation model is developed and used to design a hybrid controller. By using the simulation model, many kinds of hybrid controllers are evaluated with vehicle efficiency objective function. The designed controller is implemented in the power control unit(PCU) and gasoline equivalent fuel economy improvements are measured under various kind of standard driving modes.


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    Titel :

    Control of power distribution in fuel cell hybrid vehicle


    Weitere Titelangaben:

    Steuerung der Energieverteilung in einem Brennstoffzellen-Hybridfahrzeug


    Beteiligte:
    Choi, S.H. (Autor:in) / Kwon, Y.K. (Autor:in) / Joo, J.H. (Autor:in)


    Erscheinungsdatum :

    2003


    Format / Umfang :

    8 Seiten, 9 Bilder, 1 Tabelle, 2 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




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