Fast and Slow Transient Response of WECS with Simultaneous Actions
M.Amarendra1, S.Srikanth2, G. Siva Suteja3, B.Prasanna lakshmi4, K.Madhavi latha5

1M.Amarendra, Associate professor, Department ofEEE, KITS, Guntur, A.P., India.
2S.Srikanth, Assistant Professor, Sri Vani School of Engineering, Vijayawada, A.P., India.
3G. Siva suteja (M.Tech), Department ofEEE, MIC College of Technology, Vijayawada, A.P., India.
4B.Prasanna lakshmi (M.Tech), Department of EEE, MIC College of Technology, Vijayawada,A.P.,India.
5K.Madhavi latha(M.Tech), Department of EEE,Sasi Institute of Engineering & Ttechnology,West Godavari,A.P.,India.

Manuscript received on February 15, 2012. | Revised Manuscript received on February 20, 2012. | Manuscript published on March 05, 2012. | PP: 444-453| Volume-2 Issue-1, March 2012. | Retrieval Number: A0476022112 /2012©BEIESP
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Abstract: This paper details the transient operation of a wind energy conversion system (WECS) used simultaneously as an ac- tive filter and power generator. This study is intended to address the system response to two types of transient phenomena: voltage dips (fast transients) and wind speed variations (slow transients). The system response to voltage dips is governed by the electrical system dynamics and control method and results in the evaluation of the WECS low-voltage ride through capability. The study of the system response to wind speed variations requires a complete mechanical model to be included. Simulation results are presented for a typical WECS, and a discussion is carried out dealing with the generalization of the present work to other configurations.

Keywords: Doubly fed induction generator(DFIG), Harmonic compensation, Low- voltage ride through (LVRT), Transients, Wind energy conversion systems(WECSs).