A research group at the Berlin University of Technology is engaged with the applications of Ultra Capacitors (UC) in automotive systems. Today Ultra Capacitors have the disadvantage of a too small operation area regarding the voltages and very low voltage levels of a single module. This leads to series connections of Ultra Capacitors which needs a high dynamic energy management to guarantee the lifetime. A management system for a 42 V power net storage block is under development which includes a protection strategy for the Ultra Capacitors. The concept includes the handling of Peak Power Assistance (400 A at voltages levels from 40 V to 56 V) in combination with a DC/DC converter based (for a better utilization of the stored energy) delivery of medium power (100 A at steady 42 V). Regarding to easy-to-handle requirements the block has only a CAN bus interface and the power connector. The Paper includes a detailed description and the test results of several UC storages in different power classes.


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    Title :

    Ultra capacitor storages for automotive applications


    Additional title:

    Ultrakapazitäten für den Einsatz im Fahrzeug


    Contributors:
    Folchert, J. (author) / Naunin, D. (author) / Tseronis, D. (author)


    Publication date :

    2002


    Size :

    9 Seiten, 15 Bilder, 1 Quelle


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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