Sliding mode power control of a DFIG based variable speed wind energy conversion system

In this paper, the sliding mode control (SMC) based vector control is applied to a grid connected doubly fed induction generator (DFIG) based variable speed wind energy conversion system to improve the dynamic performances while controlling independently the generated active and reactive powers over traditional PI controller under different wind speed patterns. The robust performance analysis of SMC under grid voltage unbalance and frequency variations has also been carried out and it is observed that the generated active and reactive powers track the respective reference powers with less dynamic error without any specific adjustment of the controller. The Simulation using MATLAB/Simulink on a 1.5MW DFIG based variable speed wind energy conversion system is carried out to analyze the performances of both PI-controllers and SMC based vector control strategies.

[1]  Vadim I. Utkin,et al.  Sliding mode control design principles and applications to electric drives , 1993, IEEE Trans. Ind. Electron..

[2]  Djilani Ben Attous,et al.  SPEED AND FLUX CONTROL FOR DFOC OF DOUBLY FED INDUCTION MACHINE USING SLIDING MODE CONTROLLER , 2010 .

[3]  M.E.H. Benbouzid,et al.  Sliding Mode Power Control of Variable Speed Wind Energy Conversion Systems , 2008, 2007 IEEE International Electric Machines & Drives Conference.

[4]  M. Itsaso Martinez,et al.  Sliding-Mode Control for DFIG Rotor- and Grid-Side Converters Under Unbalanced and Harmonically Distorted Grid Voltage , 2012, IEEE Transactions on Energy Conversion.

[5]  M. Omizo,et al.  Modeling , 1983, Encyclopedic Dictionary of Archaeology.

[6]  V. Utkin.  Variable structure systems with sliding modes , 1977 .

[7]  Henk Polinder,et al.  Dynamic modelling of a wind turbine with doubly fed induction generator , 2001, 2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262).

[8]  Tao Sun.  Power Quality of Grid-Connected Wind Turbines with DFIG and Their Interaction with the Grid , 2004 .

[9]  Bijaya Pokharel.  Modeling, control and analysis of a Doubly Fed Induction Generator based wind turbine system with voltage regulation , 2011 .

[10]  Nicholas Jenkins,et al.  Comparison of fixed speed and doubly-fed induction wind turbines during power system disturbances , 2003 .

[11]  S. Chowdhury,et al.  Control of a grid connected doubly-fed induction generators for wind energy conversion , 2009, 2009 44th International Universities Power Engineering Conference (UPEC).

[12]  Weiping Li,et al.  Applied Nonlinear Control , 1991 .