DQ Impedance Stability Analysis for the Power-Controlled Grid-Connected Inverter

Chuanyue Li; Jun Liang; Liana M. CipciganWenlong MingFrederic ColasXavier Guillaud

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DQ Impedance Stability Analysis for the Power-Controlled Grid-Connected Inverter

机译：DQ Impedance Stability Analysis for the Power-Controlled Grid-Connected Inverter

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摘要

For a grid-connected inverter requiring the ac voltage magnitude and the active power control, both vector control and power synchronization control can be applied. The stability comparison based on the dq impedance stability analysis between both control are carried out via three factors including the grid impedance, the inner current loop and the virtual impedance. The dq impedances of the inverter based on both control are derived. The determinant of the impedance ratio matrix is used for the stability analysis. The bode plot of the grid impedance and the inverter impedance are present to assist the stability analysis and explain their interactions. It is found that increasing the grid impedance and the cut-off frequency of the current loop stabilize the inverter with the power synchronization control, which is converse to the vector control. Furthermore, the inverter with the power synchronization control may suffer the instabilities when connecting to a strong grid. The virtual inductor and resistor are proposed to enhance the stability for the vector control and the power synchronization control respectively. The simulation validation using Matlab/Simulink is performed.

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来源
《IEEE Transactions on Energy Conversion》 |2020年第4期|1762-1771|共10页
作者
Chuanyue Li; Jun Liang; Liana M. CipciganWenlong MingFrederic ColasXavier Guillaud;
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作者单位

Arts et Metiers Institute of Technology, Centrale Lille, HEI, HESAM Universite, EA 2697 - L2EP - Laboratoire d’Electrotechnique et d’Electronique de Puissance, University Lille, Lille, France;

School of Engineering, Cardiff University, Cardiff, U.K.;

Arts et Metiers Institute of Technology, Centrale Lille, HEI, ULR 2697- L2EP - Laboratoire d’Electrotechnique et d’Electronique de Puissance, University Lille, Lille, France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类电工技术;
关键词
Impedance; Inverters; Power system stability; Synchronization; Stability criteria; Admittance; Impedance stability analysis; VSC; small-signal stability analysis; small-signal modeling;

DQ Impedance Stability Analysis for the Power-Controlled Grid-Connected Inverter

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