The energy used by a locomotive and the energy generated from dynamic braking during typical heavy haul pit-to-port operations on two typical track routes in Australia have been analysed using the CRE-LTS software in order to evaluate the potential for hybrid heavy haul locomotive applications. Based on simulation results, the power hybridization potential factors were calculated to have values of 54.6% on track 1 and 40.9% on track 2. Thus, higher potential benefits for hybrid locomotive applications on track 1 can be expected. Current locomotives operate at an average power level that is much lower than full power. It is clear that these locomotives are not optimally used. Meanwhile, a lot of dynamic braking power occurs during operations, which is currently wasted as heat. It is necessary to collect, store and reuse it by applying cost-effective energy storage technologies. Three hybrid locomotive designs have been put forward. The analysis shows that the SLR mode design can be realized, e.g. smaller locomotives can operate on tracks 1 and 2 using diesel-electric engines with a maximum power of 1480.3 and 1956.2 kW instead of 3263 and 3280 kW, respectively. Further analysis showed that the EEDL mode locomotive design is suitable for train operation on track 1 but not on track 2. Therefore, the options for rail hybrid heavy haul locomotives will depend on the track topography, train configuration (i.e. locomotive characteristics, locomotive and wagon numbers, etc.) and train operation (i.e. loading, speed, etc.). Simple methods have been applied for sizing an ESS using three energy storage technologies: BTs, SCs and flywheels. The current technology of SCs is not suitable for application due to their very low energy density levels. For the case of the train operation on track 1, the total weight of the selected SC tank is about six to nine times as much as the weight of a typical heavy haul diesel-electric locomotive. Based on the calculations, flywheels could be an option for heavy haul hybrid locomotive applications. The current technology of Li-ion batteries could be suitable for heavy haul hybrid locomotive applications in terms of energy density. However, for actual applications, some important factors must be carefully considered, including their size, volume, cost and maintenance, in particular the limited number of life cycles. The concept designs for heavy haul hybrid locomotive applications are briefly introduced. It can be said that the realization of hybrid locomotive applications needs more research, new battery technologies and more field testing.


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    Titel :

    Conceptual designs of hybrid locomotives for application as heavy haul trains on typical track lines


    Beteiligte:
    Sun, Yan (Autor:in) / Cole, Colin (Autor:in) / Spiryagin, Maksym (Autor:in) / Godber, Tony (Autor:in) / Hames, Stewart (Autor:in) / Rasul, Mohammad (Autor:in)


    Erscheinungsdatum :

    2013


    Format / Umfang :

    14 Seiten, 11 Bilder, 5 Tabellen, 21 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





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