Aeroelastic design and LPV modelling of an experimental wind turbine blade equipped with free-floating flaps

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Abstract

Trailing edge aps located outboard on wind turbine blades have recently shown considerable potential in the alleviation of turbine lifetime dynamic loads. The concept of the free-oating ap is speci_cally interesting for wind turbines, on account of its modularity and enhanced control authority. Such a ap is free to rotate about its axis; camberline control of the free-oating ap allows for aeroelastic control of blade loads. This paper describes the design of a scaled wind turbine blade instrumented with free-oating aps, intended for use in wind tunnel experiments. The nature of the ap introduces a coupled form of utter due to the aeroelastic coupling of ap rigid-body and blade out-of-plane modes; for maximal control authority it is desired to operate close to the utter limit. Analytical and numerical methods are used to perform a utter analysis of the turbine blade. It is shown that the potential ow aeroelastic model can be recast as a continuous-time Linear-Parameter-Varying (LPV) state space model of a low order, for which formal controller design methodologies are readily available.
Original languageEnglish
Title of host publicationJournal of Physics: Conference Series
Subtitle of host publicationTORQUE 2016: The Science of Making Torque from Wind
EditorsE. Bossanyi et al
Place of PublicationBristol, UK
PublisherIOP Publishing
Number of pages11
Volume753
Edition C. Aeroservoelasticity, loads, structures and materials
DOIs
Publication statusPublished - 2016
EventTORQUE 2016: 6th International Conference "The Science of Making Torque from Wind" - Technische Universität München (TUM), Campus Garching, Munich, Germany
Duration: 5 Oct 20167 Oct 2016
https://www.events.tum.de/?sub=29

Publication series

NameJournal of Physics: Conference Series
PublisherIOP Publishing
Number C. Aeroservoelasticity, loads, structures and materials
Volume753
ISSN (Print)1742-6588
ISSN (Electronic)1742-6596

Conference

ConferenceTORQUE 2016: 6th International Conference "The Science of Making Torque from Wind"
CountryGermany
CityMunich
Period5/10/167/10/16
Internet address

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