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Title: Flow Control Leveraging Downwind Rotors for Improved Wind Power Plant Operation

Abstract

Controlling the air flow within wind power plants has the potential to improve plant performance and is an active area of research in the wind energy control community. In order to develop, test, and tune wind power plant controllers efficiently, an accurate engineering model of the turbine wake dynamics is required. Two elements of flow control are wake steering via yaw and tilt of a turbine. When a turbine is yawed or tilted away from the incoming wind field, the wake shape is changed. This is largely due to shed vortices that produce a curled wake. In this work, the well-known wake engineering model FLOw Redirection and Induction in Steady State (FLORIS) wake engineering model is enhanced to include these curled wake effects due to tilt. Since decay of these vortices has not been previously captured in an engineering model, the authors describe how vortices with decay have been added to FLORIS and how the updated model has been used to study the effects due to tilt in the wake. Results are demonstrated and compared to high-fidelity large-eddy simulations. Potential wind power plant performance gains due to flow control using tilt are investigated across different wind conditions and sites. Preliminarymore » results show power gains by using tilt to implement flow control in a variety of wind distributions and tilt values.« less

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1];  [2]; ORCiD logo [3]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. University of Colorado
  3. National Renewable Energy Laboratory (NREL), Golden, CO (United States); Colorado School of Mines
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
OSTI Identifier:
1569438
Report Number(s):
NREL/CP-5000-75052
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2019 American Control Conference (ACC), 10-12 July 2019, Philadelphia, Pennsylvania
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; wind energy; wind farm; flow control; performance; FLORIS

Citation Formats

Bay, Christopher, King, Jennifer R, Martinez, Luis, Pao, Lucy, and Johnson, Kathryn E. Flow Control Leveraging Downwind Rotors for Improved Wind Power Plant Operation. United States: N. p., 2019. Web.
Bay, Christopher, King, Jennifer R, Martinez, Luis, Pao, Lucy, & Johnson, Kathryn E. Flow Control Leveraging Downwind Rotors for Improved Wind Power Plant Operation. United States.
Bay, Christopher, King, Jennifer R, Martinez, Luis, Pao, Lucy, and Johnson, Kathryn E. Thu . "Flow Control Leveraging Downwind Rotors for Improved Wind Power Plant Operation". United States.
@article{osti_1569438,
title = {Flow Control Leveraging Downwind Rotors for Improved Wind Power Plant Operation},
author = {Bay, Christopher and King, Jennifer R and Martinez, Luis and Pao, Lucy and Johnson, Kathryn E},
abstractNote = {Controlling the air flow within wind power plants has the potential to improve plant performance and is an active area of research in the wind energy control community. In order to develop, test, and tune wind power plant controllers efficiently, an accurate engineering model of the turbine wake dynamics is required. Two elements of flow control are wake steering via yaw and tilt of a turbine. When a turbine is yawed or tilted away from the incoming wind field, the wake shape is changed. This is largely due to shed vortices that produce a curled wake. In this work, the well-known wake engineering model FLOw Redirection and Induction in Steady State (FLORIS) wake engineering model is enhanced to include these curled wake effects due to tilt. Since decay of these vortices has not been previously captured in an engineering model, the authors describe how vortices with decay have been added to FLORIS and how the updated model has been used to study the effects due to tilt in the wake. Results are demonstrated and compared to high-fidelity large-eddy simulations. Potential wind power plant performance gains due to flow control using tilt are investigated across different wind conditions and sites. Preliminary results show power gains by using tilt to implement flow control in a variety of wind distributions and tilt values.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {8}
}

Conference:
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