A virtual synchronous generator (VSG) control based on adaptive virtual inertia is proposed to improve dynamic frequency regulation of microgrid. When the system frequency deviates from the nominal steady-state value, the adaptive inertia control can exhibit a large inertia to slow the dynamic process and, thus, improve frequency nadir. And when the system frequency starts to return, a small inertia is shaped to accelerate system dynamics with a quick transient process. As a result, this flexible inertia property combines the merits of large inertia and small inertia, which contributes to the improvement of dynamic frequency response. The stability of the proposed algorithm is proved by Lyapunov stability theory, and the guidelines on the key control parameters are provided. Finally, both hardware-in-the-loop and experimental results demonstrate the effectiveness of the proposed control algorithm.


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    Title :

    Improvement of Frequency Regulation in VSG-Based AC Microgrid via Adaptive Virtual Inertia


    Contributors:
    Hou, Xiaochao (author) / Sun, Yao (author) / Zhang, Xin (author) / Lu, Jinghang (author) / Wang, Peng (author) / Guerrero, J. M. (author)

    Publication date :

    2020-02-01


    Remarks:

    Hou , X , Sun , Y , Zhang , X , Lu , J , Wang , P & Guerrero , J M 2020 , ' Improvement of Frequency Regulation in VSG-Based AC Microgrid via Adaptive Virtual Inertia ' , IEEE Transactions on Power Electronics , vol. 35 , no. 2 , 8741094 , pp. 1589-1602 . https://doi.org/10.1109/TPEL.2019.2923734



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629




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