In the literature, Bode plots and Nyquist diagrams are used extensively in stability analysis for admittance-based models. In this letter, we demonstrate that eigenvalues obtained from the total admittance lead to accurate prediction of stability while Bode plots and Nyquist diagrams show limitations. A voltage source converter with weak grid interconnection is used as an illustrative example to demonstrate the pros and cons of the three methods applied to dq-frame admittance matrices.

中文翻译：

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基于导纳的稳定性分析：波特图、奈奎斯特图还是特征值分析？


在文献中，波特图和奈奎斯特图广泛用于基于导纳的模型的稳定性分析。在这封信中，我们证明从总导纳获得的特征值可以准确预测稳定性，而波特图和奈奎斯特图显示出局限性。以具有弱电网互连的电压源换流器作为说明性示例，展示了应用于 dq 框架导纳矩阵的三种方法的优缺点。