In this paper, the instability problem caused by the constant power load in Buck converter is addressed. In order to solve this instability problem, a composite controller is proposed. Due to the double loop structure of this controller, the passivity based control (PBC) is adopted in the voltage loop to track the reference voltage and make the system stable, while a simplified continuous control set model predictive control (CCS-MPC) is selected as the current controller to track the current reference. Moreover, in order to improve the robustness of the controller and avoid the static error in output, a high order disturbance observer (HODO) is designed out to compensate the negative effects caused by the disturbance and uncertainty. Then, a mixed potential theory based large signal stability analysis is conducted to investigate the large signal stability of the studied system. In order to verify the proposed method, MATLAB simulation, OPAL-RT based hardware in loop and rapid control prototype experiments are conducted.


    Access

    Download


    Export, share and cite



    Title :

    A robust passivity based model predictive control for buck converter suppling constant power load


    Contributors:

    Publication date :

    2021-11-01


    Remarks:

    Zhou , J , Zhang , Q , Hassan , M A , Zhang , Z , Hou , M , Wu , S , Li , Y , Li , E & Guerrero , J M 2021 , ' A robust passivity based model predictive control for buck converter suppling constant power load ' , Energy Reports , vol. 7 , no. Supplement 7 , pp. 792-813 . https://doi.org/10.1016/j.egyr.2021.09.193



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    Stabilization of DC–DC buck converter with unknown constant power load via passivity-based control plus proportion-integration

    He, Wei / Namazi, Mohammad Masoud / Koofigar, Hamid Reza et al. | BASE | 2021

    Free access

    oxygen suppling device

    European Patent Office | 2017

    Free access

    An Offset-Free Composite Model Predictive Control Strategy for DC/DC Buck Converter Feeding Constant Power Loads

    Xu, Qianwen / Yan, Yunda / Zhang, Chuanlin et al. | BASE | 2020

    Free access


    oxygen suppling device

    KIM HYUNG JUN | European Patent Office | 2017

    Free access