Input Admittance Modeling and Small Signal Stability Analysis of DFIG System

Conference: PCIM Asia 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06/28/2016 - 06/30/2016 at Shanghai, China

Proceedings: PCIM Asia 2016

Pages: 7Language: englishTyp: PDF

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Zhang, Xueguang; Ma, Yan; Wang, Tianyi; Xu, Dianguo (Harbin Institute of Technology, China)

This paper derives the input admittance model of DFIG in synchronous frame, including the electromagnetic transients of DFIG, RSC current controller and PLL. Specific analysis is presented on how controller parameter variations affect the input admittance matrix. By applying the Generalized NyqusitCriterion(GNC), stability of the DFIG system can be predicted with the proposed input admittance model. Weak grid and series-compensated condition areconsidered respectively for the stability analysis. Simulation results verify the validity of the proposed input admittance model and theoretical analysis.