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In this chapter, the influence of the nonideal current loops and the DC-link voltage control with current limit on the transient synchronization stability is studied. It is found that the dynamics of current loops should be retained to guarantee the accuracy of transient stability prediction if the bandwidth of the current loop is relatively narrow, and/or the coefficient of the voltage feedforward control is relatively small. Moreover, it is shown that the transient stability is less affected by the DC-link voltage control parameters, but profoundly influenced by the current limit.

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Impact of Outer Loops of Grid-Following Converters on Transient Stability

  • 章节

  • 发表日期：

    2025年

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  • Jingxi Yang,
  • Chi Kong Tse

摘要

In this chapter, the influence of the nonideal current loops and the DC-link voltage control with current limit on the transient synchronization stability is studied. It is found that the dynamics of current loops should be retained to guarantee the accuracy of transient stability prediction if the bandwidth of the current loop is relatively narrow, and/or the coefficient of the voltage feedforward control is relatively small. Moreover, it is shown that the transient stability is less affected by the DC-link voltage control parameters, but profoundly influenced by the current limit.