Modeling, Analysis, and Stabilization of Converter-Fed AC Microgrids With High Penetration of Converter-Interfaced Loads
2012; Institute of Electrical and Electronics Engineers; Volume: 3; Issue: 3 Linguagem: Inglês
10.1109/tsg.2012.2183683
ISSN1949-3061
AutoresAmr Radwan, Yasser Abdel‐Rady I. Mohamed,
Tópico(s)Optimal Power Flow Distribution
ResumoThis paper addresses ac microgrid stability under high penetration of converter-interfaced loads (CILs). According to the Nyquist admittance ratio criterion, destabilizing interaction dynamics are yielded among the interfacing voltage-source inverter (VSI) of the ac microgrid and CILs. Active stabilization techniques are proposed to maintain the overall system stability from the VSI side using admittance-based small signal analysis. Sensitivity and robustness analyses are presented to assess the dynamic coupling among active damping and voltage tracking controllers of the interfacing VSI. A complete Matlab/Simulink model of an ac microgrid with multiple CILs is used to demonstrate the effectiveness of the proposed active compensation techniques.
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