Feedforward Pitch Control Using Wind Speed Estimation

The dynamic response of a multi-MW wind turbine to a sudden change in wind speed is usually slow, because of the slow pitch control system. This could cause a large excursion of the rotor speed and an output power over the rated. A feedforward pitch control can be applied to minimize the fluctuations of these parameters. This paper introduces the complete design steps for a feedforward pitch controller, which consist of three stages, i.e. the aerodynamic torque estimation, the 3-dimensional lookup table for the wind seed estimation, and the calculation of the feedforward pitch amount. The effectiveness of the feedforward control is verified through numerical simulations of a multi-MW wind turbine.

[1]  Jong-Hak Lee,et al.  Novel State-of-Charge Estimation Method for Lithium Polymer Batteries Using Electrochemical Impedance Spectroscopy , 2011 .

[2]  W. Leithead,et al.  Control of variable speed wind turbines: Dynamic models , 2000 .

[3]  Heung-Geun Kim,et al.  Cost-Effective Converters for Micro Wind Turbine Systems using PMSG , 2008 .

[4]  Torbjorn Thiringer,et al.  Modeling of Wind Turbines for Power System Studies , 2002, IEEE Power Engineering Review.

[5]  J. Mcgowan,et al.  Wind Energy Explained , 2002 .

[6]  Fernando D. Bianchi,et al.  Wind Turbine Control Systems: Principles, Modelling and Gain Scheduling Design , 2006 .

[7]  Arash Kiyoumarsi,et al.  Improvement in Computation of Δ V10Flicker Severity Index Using Intelligent Methods , 2011 .

[8]  James F. Manwell,et al.  Book Review: Wind Energy Explained: Theory, Design and Application , 2006 .

[9]  Arthur Gelb,et al.  Applied Optimal Estimation , 1974 .

[10]  M. Chinchilla,et al.  Control of permanent-magnet generators applied to variable-speed wind-energy systems connected to the grid , 2006, IEEE Transactions on Energy Conversion.

[11]  Gi-Gab Yoon,et al.  Active Use of DFIG-Based Variable-Speed Wind-Turbine for Voltage Control in Power System Operation , 2008 .

[12]  R. W. De Doncker,et al.  Doubly fed induction generator systems for wind turbines , 2002 .

[13]  E. L. van der Hooft,et al.  ESTIMATED WIND SPEED FEED FORWARD CONTROL FOR WIND TURBINE OPERATION OPTIMISATION , 2004 .

[14]  Jakob Stoustrup,et al.  Estimation of effective wind speed , 2007 .