Evaluating Tilt for Wind Farms: Preprint

Research output: Contribution to conferencePaper


The objective of this work is to demonstrate the feasibility of tilt in a wind plant. Tilt control, much like other wind plant control strategies, has the potential to improve the performance of a wind plant. Tilt control uses the tilt angle of the turbine to direct the wake above or below the downstream turbines. This paper presents a study of tilt in two- and threeturbine arrays. Specifically, the authors show that the power production of a two-turbine array can be increased by tilting turbines in a specific orientation. When adding more turbines, as is shown with the three-turbine array, the overall percentage of power gain increases. This outcome deviates from some of the results seen in typical wind plant control strategies. Finally, we discuss the impact this type of control strategy has on the aerodynamics in a wind plant. This analysis demonstrates that a good understanding of wake characteristics is necessary to improve the plant's performance. A tilt strategy such as the one presented in this paper may have implications for future control/optimization studies including optimization of hub heights in a wind plant and analysis of deep array effects.
Original languageAmerican English
Number of pages8
StatePublished - 2017
EventAmerican Control Conference - Seattle, Washington
Duration: 24 May 201726 May 2017


ConferenceAmerican Control Conference
CitySeattle, Washington

NREL Publication Number

  • NREL/CP-5000-68004


  • control strategies
  • performance
  • tilt
  • wind energy
  • wind farm
  • wind turbine


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