Sajjad Tohidi - Sharif University of Technology
Mohammad Reza Zolghadri - Sharif University of Technology
Hashem Oraee - Sharif University of Technology
Ashknaz Oraee - University of Cambridge Cambridge, UK

Brushless Doubly Fed Induction Generator (BDFIG)has been recently proposed to be used in variable speed wind turbines. This paper intends to investigate the influence of certainmodel simplifications to obtain a reduced-order model of a wind turbine with BDFIG suitable for transient studies. To achievethis goal, small signal analysis is performed for a recently manufactured 250 kVA BDFIG to obtain system modes and their participation factors. Identifying highly damped modes, influences of neglecting dynamics of their participated states are studied through time-domain simulation in MATLAB/Simulink.

component; brushless doubly fed induction generator, wind turbine, small signal analysis, dynamics