Nonlinear model predictive control approach for structural load mitigation of wind turbines in presence of wind measurement uncertainties

In this paper the design of nonlinear model predictive control (NMPC) for multi-mega watt wind turbines is addressed. In an attempt to minimize energy production costs, we propose an NMPC scheme to maximize the wind energy harvest while mitigating structural loads. The proposed controller relies on noisy look-ahead wind field information obtained via LIDAR measurements. By means of simulations we demonstrate the advantages of the proposed NMPC approach.

[1]  Stephen P. Boyd,et al.  Load reduction of wind turbines using receding horizon control , 2011, 2011 IEEE International Conference on Control Applications (CCA).

[2]  David Schlipf,et al.  Nonlinear model predictive control of wind turbines using LIDAR , 2013 .

[3]  Torben Mikkelsen,et al.  Improving Yaw Alignment Using Spinner Based LIDAR , 2011 .

[4]  J. Jonkman,et al.  Definition of a 5-MW Reference Wind Turbine for Offshore System Development , 2009 .

[5]  Torben Mikkelsen,et al.  Spectral analysis of wind turbulence measured by a Doppler Lidar for velocity fine structure and coherence studies , 2010 .

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

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

[8]  Alan Wright,et al.  The use of preview wind measurements for blade pitch control , 2011 .

[9]  Torben Knudsen,et al.  On Using Wind Speed Preview to Reduce Wind Turbine Tower Oscillations , 2013, IEEE Transactions on Control Systems Technology.

[10]  Carlo L. Bottasso,et al.  Aero-servo-elastic modeling and control of wind turbines using finite-element multibody procedures , 2006 .

[11]  Martin Kühn,et al.  Development of a wind turbine LiDAR simulator , 2009 .

[12]  Kathryn E. Johnson,et al.  FX-RLS-Based Feedforward Control for LIDAR-Enabled Wind Turbine Load Mitigation , 2012, IEEE Transactions on Control Systems Technology.

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

[14]  L Y Pao,et al.  Control of Wind Turbines , 2011, IEEE Control Systems.

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

[16]  David Schlipf,et al.  Nonlinear model predictive controller design for extreme load mitigation in transition operation region in wind turbines , 2015, 2015 IEEE Conference on Control Applications (CCA).

[17]  M. Hand,et al.  Lidar for Turbine Control: March 1, 2005 - November 30, 2005 , 2006 .

[18]  Neil Kelley,et al.  Model Predictive Control Using Preview Measurements From LIDAR y , 2011 .

[19]  Alan Wright,et al.  Blade Pitch Control with Preview Wind Measurements y , 2010 .

[20]  David Schlipf,et al.  Prospects of a collective pitch control by means of predictive disturbance compensation assisted by wind speed measurements , 2008 .

[21]  Lucy Y. Pao,et al.  LIDAR Wind Speed Measurements of Evolving Wind Fields , 2012 .

[22]  David Schlipf,et al.  Lidar-assisted control concepts for wind turbines , 2016 .