This article presents an improved linear-quadratic regulator (LQR) control based on linear matrix inequalities (LMIs) to optimize the key parameters for the closed-loop control of dual-active-bridge (DAB) converters with high system uncertainty. First, the polytopic model of an uncertain DAB converter is introduced according to the simplified DAB equivalent circuit. LMIs are then used in the improved LQR control to derive the optimized control parameters under the given constraints. An improved LMI-LQR hybrid closed-loop control is adopted with the output current introduced in the control loop to enhance the dynamic performance. The performance of the proposed LMI-LQR is compared with the conventional LQR in terms of transient responses under various load and line disturbances. Both the simulation and experimental results are provided to validate the advantages of the proposed control.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Robust LMI-LQR Control for Dual-Active-Bridge DC–DC Converters With High Parameter Uncertainties


    Contributors:
    Xia, Peizhou (author) / Shi, Haochen (author) / Wen, Huiqing (author) / Bu, Qinglei (author) / Hu, Yihua (author) / Yang, Yong (author)


    Publication date :

    2020-03-01


    Size :

    3838709 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Uncertainty and Disturbance Estimator-Based Robust Tracking Control for Dual-Active- Bridge Converters

    Wu, Yuheng / Mahmud, Mohammad Hazzaz / Zhao, Yue et al. | IEEE | 2020


    Modeling and Advanced Control of Dual Active Bridge DC-DC Converters

    Shao, Shuai / Chen, Linglin / Shan, Zhenyu et al. | BASE | 2021

    Free access


    Robust overtaking control of autonomous electric vehicle with parameter uncertainties

    Xu, Liwei / Zhuang, Weichao / Yin, Guodong et al. | SAGE Publications | 2019