Active Control of Wind Turbines Through Varying Blade Tip Sweep

Achilles M. Boulamatsis; Thanasis K. Barlas; Herricos Stapountzis

doi:10.1016/j.renene.2018.07.022

Active Control of Wind Turbines Through Varying Blade Tip Sweep

Achilles M. Boulamatsis^*, Thanasis K. Barlas, Herricos Stapountzis

^*Corresponding author for this work

Department of Wind Energy

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

In this research work an introduction to the concept of an actively controlled horizontal axis wind turbine through varying blade tip sweep, is presented. The concept refers to variable tip swept rotor blades, that have the ability to pivot collectively aft, about an axis located at the blade tips. Quantities to be controlled are power production and blade loads. The investigation is carried out with a modified Blade Element Momentum (BEM) model that takes into account variable tip swept rotor blades and the modifications are based on results from a lifting line theory based model. The simulations refer to the 5MW NREL reference wind turbine that incorporates a suitable controller and preliminary results show beneficial behaviour in all of the investigated areas.

Original language	English
Journal	Renewable Energy
Volume	131
Pages (from-to)	25-36
ISSN	0960-1481
DOIs	https://doi.org/10.1016/j.renene.2018.07.022
Publication status	Published - 2019

Keywords

Active control
Swept blades
Unsteady lifting line theory
Blade element momentum theory

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10.1016/j.renene.2018.07.022

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title = "Active Control of Wind Turbines Through Varying Blade Tip Sweep",

abstract = "In this research work an introduction to the concept of an actively controlled horizontal axis wind turbine through varying blade tip sweep, is presented. The concept refers to variable tip swept rotor blades, that have the ability to pivot collectively aft, about an axis located at the blade tips. Quantities to be controlled are power production and blade loads. The investigation is carried out with a modified Blade Element Momentum (BEM) model that takes into account variable tip swept rotor blades and the modifications are based on results from a lifting line theory based model. The simulations refer to the 5MW NREL reference wind turbine that incorporates a suitable controller and preliminary results show beneficial behaviour in all of the investigated areas.",

keywords = "Active control, Swept blades, Unsteady lifting line theory, Blade element momentum theory",

author = "Boulamatsis, {Achilles M.} and Barlas, {Thanasis K.} and Herricos Stapountzis",

year = "2019",

doi = "10.1016/j.renene.2018.07.022",

language = "English",

volume = "131",

pages = "25--36",

journal = "Renewable Energy",

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TY - JOUR

T1 - Active Control of Wind Turbines Through Varying Blade Tip Sweep

AU - Boulamatsis, Achilles M.

AU - Barlas, Thanasis K.

AU - Stapountzis, Herricos

PY - 2019

Y1 - 2019

N2 - In this research work an introduction to the concept of an actively controlled horizontal axis wind turbine through varying blade tip sweep, is presented. The concept refers to variable tip swept rotor blades, that have the ability to pivot collectively aft, about an axis located at the blade tips. Quantities to be controlled are power production and blade loads. The investigation is carried out with a modified Blade Element Momentum (BEM) model that takes into account variable tip swept rotor blades and the modifications are based on results from a lifting line theory based model. The simulations refer to the 5MW NREL reference wind turbine that incorporates a suitable controller and preliminary results show beneficial behaviour in all of the investigated areas.

AB - In this research work an introduction to the concept of an actively controlled horizontal axis wind turbine through varying blade tip sweep, is presented. The concept refers to variable tip swept rotor blades, that have the ability to pivot collectively aft, about an axis located at the blade tips. Quantities to be controlled are power production and blade loads. The investigation is carried out with a modified Blade Element Momentum (BEM) model that takes into account variable tip swept rotor blades and the modifications are based on results from a lifting line theory based model. The simulations refer to the 5MW NREL reference wind turbine that incorporates a suitable controller and preliminary results show beneficial behaviour in all of the investigated areas.

KW - Active control

KW - Swept blades

KW - Unsteady lifting line theory

KW - Blade element momentum theory

U2 - 10.1016/j.renene.2018.07.022

DO - 10.1016/j.renene.2018.07.022

M3 - Journal article

VL - 131

SP - 25

EP - 36

JO - Renewable Energy

JF - Renewable Energy

SN - 0960-1481

ER -

Active Control of Wind Turbines Through Varying Blade Tip Sweep

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Keywords

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