The starter/generator has been developed consequently worldwide for the past two to three years so that mass production on the basis of a 42 V on-board network is to be expected for the year 2002. A decision in favour of a 42 V on-board network does not include whether the starter/generator for a high performance (>= 10 kW) will work with 42 V or a higher voltage. A higher voltage would require the DC/DC transformer, that is, additional costs, yet connected with the advantage of less currents. In consequence the requirements of the power electronics would drop. The approximately 100 prototypes built by Siemens comprised the voltage range of 42 V to 300 V. The robust asynchronous starter/generator with water cooling proves to have considerable advantages compared to the permanentmagnetic synchronous starter/generator and a higher starting current. These advantages include safety during driving (unexpected braking after an inner short circuit). For the 4 - 6 kW power range at 42 V exclusively 12 pole machines with q1 = 2 - 3 slots per pole and phase were built under consideration of the battery starting capability. Tests of the asynchronous starter/generator as a solid disc rotor with an integrated cage show that this design is definitely possible. However, as a result of the high axial forces considerable constructional work is necessary leading to measurements which, at worst, surpass those of a normal machine.


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    Titel :

    Vector controlled crankshaft starter-generator for motor vehicle


    Weitere Titelangaben:

    Vektorgeregelter Kurbelwellen-Starter-Generator für Motorfahrzeuge


    Beteiligte:
    Altenbernd, G. (Autor:in) / Schäfer, H. (Autor:in) / Wähner, L. (Autor:in)


    Erscheinungsdatum :

    2000


    Format / Umfang :

    5 Seiten, 5 Bilder, 21 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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