Better energy efficiency can be acquired by an appropriate shift operation during the regenerative braking process. In this work, an electric vehicle equipped with a two-speed automated transmission was used as the target vehicle. The transmission consists of two-stage planetary gear sets, a helical gear set, and two brakes. A hierarchical algorithm is presented for the electric vehicle. The upper-level algorithm was synthesized to assign braking force among regenerative braking, friction braking, front axle braking, and rear axle braking. Based on the motor external characteristic and ECE-R13 regulations, the work designed the dynamic distribution strategy for maximum use of regenerative braking. In the medium-level algorithm, the motor speed, efficiency characteristics, and assigned regenerative braking torque from upper-level algorithm were used to analyze the optimal shift points for improving regenerative efficiency. Then, a shift points table was drawn. In the lower-level algorithm, the linear control for the transmission was given to ensure seamless and smooth shifting. Finally, hardware-in-loop simulations were carried out. The results show that the proposed algorithm can improve performance in energy efficiency in the experimental braking events.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Regenerative braking algorithm for the electric vehicle with a seamless two-speed transmission


    Contributors:
    Zhou, Zhou (author) / Huang, Miaohua (author)


    Publication date :

    2019-03-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    ELECTRIC VEHICLE WITH REGENERATIVE BRAKING

    THEODOSAKIS GREGORY AUGUST / KING RUSSELL WILLIAM / BOWEN JONATHAN DANIEL | European Patent Office | 2025

    Free access

    Electric Vehicle Regenerative Braking

    Wyczalek, Floyd A. / Wang, Tsih C. | SAE Technical Papers | 1992


    ADAPTIVE ELECTRIC VEHICLE REGENERATIVE BRAKING

    PETRIDIS THEMI / ETHERIDGE PAUL | European Patent Office | 2024

    Free access

    Adaptive electric vehicle regenerative braking

    THEMI PETRIDIS / ETHERIDGE PAUL | European Patent Office | 2024

    Free access