Active Control of Wind Turbines Through Varying Blade Tip Sweep

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

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-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 languageEnglish
JournalRenewable Energy
Volume131
Pages (from-to)25-36
ISSN0960-1481
DOIs
Publication statusPublished - 2019

Keywords

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

Cite this

Boulamatsis, Achilles M. ; Barlas, Thanasis K. ; Stapountzis, Herricos. / Active Control of Wind Turbines Through Varying Blade Tip Sweep. In: Renewable Energy. 2019 ; Vol. 131. pp. 25-36.
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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.",
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Active Control of Wind Turbines Through Varying Blade Tip Sweep. / Boulamatsis, Achilles M.; Barlas, Thanasis K.; Stapountzis, Herricos.

In: Renewable Energy, Vol. 131, 2019, p. 25-36.

Research output: Contribution to journalJournal articleResearchpeer-review

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

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JO - Renewable Energy

JF - Renewable Energy

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