Robust Stability Assessment of Single-Phase Inverter With Multiparameter Distributions

Yongyang Chen, Shangzhi Pan, Meng Huang, Haoran Wang, Huai Wang, Xiaoming Zha

    Research output: Contribution to journalArticlepeer-review

    7 Scopus citations


    Grid-connected inverters inevitably operate under uncertain system parameters. These uncertain parameters such as inductance and capacitance are caused by device aging or uncertain grid conditions. And they will affect the stability margin of the inverter and bring an unstable operation risk even with a well initial design. The existing research articles mainly focus on robust stability analysis and control strategies while ignoring the influence of parameter distributions on operational risk. How to evaluate the instability risk of the inverter under multiparameter distribution is still an open question. In this article, the structured singular value (SSV) method is proposed to evaluate the robust stability of the inverter with multiparameter distributions. The distribution characteristics of uncertain parameters are briefly reviewed. The system model of a single-phase grid-connected inverter is established with the parameter distributions of the system key components. The probability of stable system operation can be quantified by the SSV method. Experiment and case study results verify the correctness and effectiveness of the proposed method.

    Original languageBritish English
    Pages (from-to)6062-6073
    Number of pages12
    JournalIEEE Transactions on Power Electronics
    Issue number5
    StatePublished - 1 May 2022


    • Robust stability margin
    • single-phase grid-connected inverter
    • structured singular value (SSV)


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