Simulation Comparison of Wake Mitigation Control Strategies for a Two-Turbine Case

Paul Fleming, Pieter M.O. Gebraad, Sang Lee, Jan Willem Van Wingerden, Kathryn Johnson, Matt Churchfield, John Michalakes, Philippe Spalart, Patrick Moriarty

Research output: Contribution to journalArticlepeer-review

224 Scopus Citations

Abstract

Wind turbines arranged in a wind plant impact each other through their wakes. Wind plant control is an active research field that attempts to improve wind plant performance by coordinating control of individual turbines to take into account these turbine-wake interactions. In this paper, high-fidelity simulations of a two-turbine fully waked scenario are used to investigate several wake mitigation strategies, including modification of yaw and tilt angles of an upstream turbine to induce wake skew, as well as repositioning of the downstream turbine. The simulation results are compared through change relative to a baseline operation in terms of overall power capture and loading on the upstream and downstream turbine. Results demonstrated improved power production for all methods. Analysis of control options, including individual pitch control, shows potential to minimize the increase of, or even reduce, turbine loads.

Original languageAmerican English
Pages (from-to)2135-2143
Number of pages9
JournalWind Energy
Volume18
Issue number12
DOIs
StatePublished - 2015

Bibliographical note

Publisher Copyright:
Copyright © 2014 John Wiley & Sons, Ltd. Copyright © 2014 John Wiley & Sons, Ltd.

NREL Publication Number

  • NREL/JA-5000-61636

Keywords

  • CFD
  • computational fluid dynamics
  • independent pitch control
  • wake redirection
  • wind energy
  • wind farm control
  • wind turbine wakes

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