In electrical vehicles (EV), regenerative braking generates more power than the batteries can accept, which means additional power is wasted to heat in the vehicle’s brake pads. And the battery life span will be greatly reduced at a peak power many times that of most battery technologies. Therefore, a compact power unit is needed in parallel with the dc bus to absorb and store the motor generated energy into ultracapacitors. Then ultracapacitors release that power when the vehicle accelerates and the batteries are under the greatest strain. In this paper, a modularized high power density bidirectional dc-dc converter is developed to perform the energy transfer between battery string and ultracapacitors. And a so-called dual current loop control strategy is applied to enhance the converter modularization capability. Experimental results are provided to demonstrate effectiveness of the proposed control strategy. The hardware prototype is capable of achieving 4 kW 42 inch3 power density and 95.5% efficiency.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Modularized High Power Density Bidirectional Buck-Boost DC-DC Converter for EV Battery Management


    Contributors:
    Geng, Zhi (author) / Gu, Dazhong (author) / Hong, Tianqi (author) / Qi, Kedao (author) / Zhang, Kuang (author) / Ambrosio, Joseph (author)


    Publication date :

    2018-06-01


    Size :

    2200928 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Bidirectional Battery Charger Circuit using Buck/Boost Converter

    Sreejyothi, Khammampati R / Balakrishnakothapalli / Chenchireddy, Kalagotla et al. | IEEE | 2022



    High-Performance Control of Battery-Interfacing Cascade Buck-Boost Converter

    Li, Pengwei / Bazzi, Ali / Zhang, Zhe | IEEE | 2024


    Bidirectional Three-phase Current Source Converter based Buck-boost AC/DC System using Bidirectional Switches

    Narwal, Ramandeep / Bhattacharya, Subhashish / Baliga, B. Jayant et al. | IEEE | 2023


    Research on dual Buck/Boost integrated three-port bidirectional DC/DC converter

    Xiaofeng Sun / Liu, Feilong / Liangliang Xiong et al. | IEEE | 2014