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Indexed by:会议论文

Date of Publication:2008-11-12

Included Journals:EI、CPCI-S、Scopus

Volume:367

Page Number:189-196

Key Words:DFIG; Damping analysis; Mirror pole placement; Small signal

Abstract:The present work is based on developing the effect from doubly fed induction generator (DFIG) connected to the grid. The dynamic model, small signal stability analysis, and damping characteristic are conducted. By comparison with synchronous generator, there is insufficient damping performance from DFIG. The paper proposes the idea of designing a damping controller emulating synchronous generator by pole placement technique in order to improve damping. Furthermore, a mirror pole assignment solution is particularly put forward in view of instability system. The theoretical analysis and controller effectiveness are confirmed via simulation results for a size 9 MW DFIG operating under varied converter conditions, and the damping improvement observed in time domain support the result obtained from eigenvalue analysis.