Nonideal Current Loop Weakens Transient Synchronization Stability of Grid-Following Converter

Research output: Conference Papers (RGC: 31A, 31B, 32, 33)32_Refereed conference paper (without host publication)peer-review

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Detail(s)

Original languageEnglish
Publication statusPublished - 21 May 2023

Conference

Title56th IEEE International Symposium on Circuits and Systems (ISCAS 2023)
LocationMonterey Conference Center
PlaceUnited States
CityMonterey
Period21 - 25 May 2023

Abstract

The widely deployed grid-following converters (GFLCs) may lose synchronization under grid disturbances, presenting a critical challenge to the power electronics penetrated power grid. While some methods have been proposed for analyzing the transient synchronization stability, their models tend to assume an ideal current loop. Using a full-order system model, this paper demonstrates that the nonideal current loop significantly weakens the stability of GFLCs. Specifically, the basin of attraction gets decreased and more sensitive to parameter changes. The complex bifurcation behavior behind these changes is revealed via the numerical continuation. Accordingly, a design principle is derived for enhancing the transient synchronization stability.

Research Area(s)

  • Transient synchronization stability, current loop, grid-following converter, basin of attraction, numerical continuation.

Citation Format(s)

Nonideal Current Loop Weakens Transient Synchronization Stability of Grid-Following Converter. / Liu, Chao Charles; Tse, Chi K.; Yang, Jingxi.
2023. Paper presented at 56th IEEE International Symposium on Circuits and Systems (ISCAS 2023), Monterey, California, United States.

Research output: Conference Papers (RGC: 31A, 31B, 32, 33)32_Refereed conference paper (without host publication)peer-review