Control of wind turbines: Past, present, and future

We review the objectives and techniques used in the control of horizontal axis wind turbines at the individual turbine level, where controls are applied to the turbine blade pitch and generator. The turbine system is modeled as a flexible structure operating in the presence of turbulent wind disturbances. Some overview of the various stages of turbine operation and control strategies used to maximize energy capture in below rated wind speeds is given, but emphasis is on control to alleviate loads when the turbine is operating at maximum power. After reviewing basic turbine control objectives, we provide an overview of the common basic linear control approaches and then describe more advanced control architectures and why they may provide significant advantages.

[1]  Kostas Kalaitzakis,et al.  Design of a maximum power tracking system for wind-energy-conversion applications , 2006, IEEE Transactions on Industrial Electronics.

[2]  P. Caselitz,et al.  Robust Multivariable Pitch Control Design for Load Reduction on Large Wind Turbines , 2008 .

[3]  Karl Stol,et al.  Scheduled Model Predictive Control of a Wind Tur bine , 2009 .

[4]  H. Miyamoto,et al.  Output maximization control of wind turbine based on extremum control strategy , 2001, Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148).

[5]  Matthew A. Lackner,et al.  A comparison of smart rotor control approaches using trailing edge flaps and individual pitch control , 2009 .

[6]  J. Freeman,et al.  An investigation of variable speed horizontal-axis wind turbines using direct model-reference adaptive control , 1999 .

[7]  P. Khargonekar,et al.  State-space solutions to standard H/sub 2/ and H/sub infinity / control problems , 1989 .

[8]  Cao Binggang,et al.  A new maximum power point tracking control scheme for wind generation , 2002, Proceedings. International Conference on Power System Technology.

[9]  Neil Kelley,et al.  Comparing Pulsed Doppler LIDAR with SODAR and Direct Measurements for Wind Assessment , 2007 .

[10]  Karl Stol,et al.  A Comparison of Multi-Blade Coordinate Transformation and Direct Periodic Techniques for Wind Turbine Control Design , 2009 .

[11]  Lucy Y. Pao,et al.  Nonminimum Phase Dynamic Inversion for Settle Time Applications , 2009, IEEE Transactions on Control Systems Technology.

[12]  Y. D. Song,et al.  Variable speed control of wind turbines using nonlinear and adaptive algorithms , 2000 .

[13]  Maureen Hand,et al.  Nonlinear Control of Variable-Speed Wind Turbines for Generator Torque Limiting and Power Optimization , 2006 .

[14]  Susan A. Frost,et al.  Direct adaptive control of a utility‐scale wind turbine for speed regulation , 2009 .

[15]  Jason Jonkman,et al.  FAST User's Guide , 2005 .

[16]  Ervin Bossanyi,et al.  The Design of closed loop controllers for wind turbines , 2000 .

[17]  Alan Wright,et al.  Combined Feed-forward/Feedback Control of Wind Turbines to Reduce Blade Flap Bending Moments y , 2009 .

[18]  Patrick J. Moriarty,et al.  Wind turbine modeling overview for control engineers , 2009, 2009 American Control Conference.

[19]  M. M. Hand.  Variable-Speed Wind Turbine Controller Systematic Design Methodology: A Comparison of Non-Linear and Linear Model-Based Designs , 1999 .

[20]  Ervin Bossanyi,et al.  Wind Energy Handbook , 2001 .

[21]  L.Y. Pao,et al.  Stability analysis of an adaptive torque controller for variable speed wind turbines , 2004, 2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601).

[22]  G. Bir.  Multi-Blade Coordinate Transformation and its Application to Wind Turbine Analysis , 2008 .

[23]  Kathryn E. Johnson,et al.  Adaptive Pitch Control of Variable-Speed Wind Turbines , 2008 .

[24]  Dale E. Berg.  IEA Topical Expert Meeting 56 on The Application of Smart Structures for Large Wind Turbine Rotor Blades. , 2008 .

[25]  P. Khargonekar,et al.  STATESPACE SOLUTIONS TO STANDARD 2 H AND H? CONTROL PROBLEMS , 1989 .

[26]  Mark J. Balas,et al.  PERIODIC DISTURBANCE ACCOMMODATING CONTROL FOR SPEED REGULATION OF WIND TURBINES , 2002 .

[27]  Thomas R. Kane,et al.  THEORY AND APPLICATIONS , 1984 .

[28]  Karl Stol,et al.  Simulating MIMO Feedback Linearization Control of Wind Turbines Using FAST , 2008 .

[29]  A. D. Wright,et al.  Advanced Control Design for Wind Turbines; Part I: Control Design, Implementation, and Initial Tests , 2008 .

[30]  Karl Stol.  Disturbance Tracking Control and Blade Load Mitigation for Variable-Speed Wind Turbines , 2003 .

[31]  Poul Ejnar Sørensen,et al.  Robust multi‐model control of an autonomous wind power system , 2006 .

[32]  Mark J. Balas,et al.  Disturbance Tracking Control Theory with Application to Horizontal Axis Wind Turbines , 1998 .

[33]  Karl Stol,et al.  Designing and Testing Controls to Mitigate Tower Dynamic Loads in the Controls Advanced Research Turbine , 2007 .

[34]  Amit Dixit,et al.  On the dynamics of the pitch control loop in horizontal-axis large wind turbines , 2005, Proceedings of the 2005, American Control Conference, 2005..

[35]  Kathryn E. Johnson,et al.  A tutorial on the dynamics and control of wind turbines and wind farms , 2009, 2009 American Control Conference.

[36]  A. D. Wright,et al.  Modern Control Design for Flexible Wind Turbines , 2004 .

[37]  Zhicheng Ji,et al.  Maximum Power Point Tracking of Wind Energy Conversion Systems Based on Sliding Mode Extremum Seeking Control , 2008, 2008 IEEE Energy 2030 Conference.

[38]  Mark J. Balas,et al.  Full-State Feedback Control of a Variable-Speed Wind Turbine: A Comparison of Periodic and Constant Gains , 2001 .