The principal issue in choosing an energy management strategy (EMS) for hybrid electric vehicles (HEVs) has been the way of determining the optimal share of electric energy in hybrid drive. In this article, a novel EMS is proposed that, along with maximum engine efficiency in the hybrid drive, can optimize the share of battery energy for the maximum efficiency of vehicle power train expanded with an imaginary power plant that, by delivering the electric energy to a grid, feeds the vehicle battery. It is proved that the expanded power train efficiency has the local maximum for a wide range of wheel power demand. The relation between the wheel power demand in hybrid drive, the share of battery energy, and the maximum efficiency of the expanded power train is conducted offline. Downloaded to the onboard control system, it enables the operation with the instantaneously optimal share of battery energy and the control system to operate with the low computational load. As an example, the power-split HEV power train is modeled and its behavior for the proposed EMS is simulated. The vehicle power train efficiency and engine fuel consumption are found to be highly competitive to the compared power trains, including that of the Toyota Prius.


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    Titel :

    A Novel Approach to Energy Management Strategy for Hybrid Electric Vehicles


    Weitere Titelangaben:

    Sae Int. J. Commer. Veh


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2021-02-25


    Format / Umfang :

    17 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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