Admittance-Based Stability Analysis: Bode Plots, Nyquist Diagrams or Eigenvalue Analysis?

Admittance-Based Stability Analysis: Bode Plots, Nyquist Diagrams or Eigenvalue Analysis?
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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?

DOI:
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发表时间:
2020
影响因子:
6.6
通讯作者:
Zhixin Miao
Zhixin Miao
中科院分区:
工程技术1区
文献类型:
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作者:
Lingling Fan;Zhixin Miao

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在文献中,波特图和奈奎斯特图被广泛用于导纳模型的稳定性分析。在这封信中,我们证明,从总导纳得到的特征值导致准确的预测稳定性,而波德图和奈奎斯特图显示出局限性。以一个具有弱网互联的电压源换流器为例,说明了三种方法应用于<inline-formula><tex-math notation="LaTeX">$dq$</tex-math></inline-formula>-框架导纳矩阵的优缺点。
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 <inline-formula><tex-math notation="LaTeX">$dq$</tex-math></inline-formula>-frame admittance matrices.