Simulation comparison of wake mitigation control strategies for a two‐turbine case. (16th October 2014)

• Record Type: Journal Article
• Authors: Fleming, Paul; Gebraad, Pieter M.O.; Lee, Sang; van Wingerden, Jan‐Willem; Johnson, Kathryn; Churchfield, Matt; Michalakes, John; Spalart, Philippe; Moriarty, Patrick
• Is Part Of: Wind energy. Volume 18:Number 12(2015)
• Page Start: 2135
• Page End: 2143
• Publication Date: 2014-10-16
• Subjects: wind farm control -- wind turbine wakes -- computational fluid dynamics -- CFD -- wake redirection -- independent pitch control -- wind energy; Wind power -- Periodicals; 621.312136
• DOI: 10.1002/we.1810
• Languages: English
• ISSNs: 1095-4244

Abstract

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.Copyright © 2014 John Wiley & Sons, Ltd.