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In this chapter, the nonlinear dynamics of an islanded microgrid with multiple grid-forming converters are studied. Several slow-scale reduced-order models are proposed for addressing different bifurcation scenarios. It is shown that slow-scale Hopf and homoclinic bifurcation behaviors arise from the stability of the voltage loops of grid-forming converters and are unrelated to the transmission network dynamics. Furthermore, all inner loops can be omitted when studying saddle-node bifurcation. On this basis, the modeling procedure towards an islanded multi-converter microgrid is presented.

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Reduced-Order Models of Islanded Microgrid with Multiple Grid-Forming Converters

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  • 发表日期：

    2025年

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  • Jingxi Yang,
  • Chi Kong Tse

摘要

In this chapter, the nonlinear dynamics of an islanded microgrid with multiple grid-forming converters are studied. Several slow-scale reduced-order models are proposed for addressing different bifurcation scenarios. It is shown that slow-scale Hopf and homoclinic bifurcation behaviors arise from the stability of the voltage loops of grid-forming converters and are unrelated to the transmission network dynamics. Furthermore, all inner loops can be omitted when studying saddle-node bifurcation. On this basis, the modeling procedure towards an islanded multi-converter microgrid is presented.