We@Sea - Tools and Concepts

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Overview & results: Tools and conceptsOverview & results: Tools and concepts

DenDen HelderHelder11--2 December 20092 December 2009

Overview & results:Overview & results:Tools and conceptsTools and concepts

Michiel ZaaijerMichiel Zaaijer

We@SeaWe@Sea

Delft University of TechnologyDelft University of Technology

www.wewww.we--atat--sea.orgsea.org

Results ofResults of WE@SeaWE@Sea research in perspectiveresearch in perspective


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Hardware related to energy conversionHardware related to energy conversion

Field of interestField of interest


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Status and development of implementationStatus and development of implementation

StartStart WE@SeaWE@Sea researchresearch programmeprogramme

EndEnd WE@SeaWE@Sea researchresearch programmeprogramme

256 MW256 MW

2 GW2 GW

22--12 m12 m – – 00--14 km14 km – – 0.220.22--160 MW160 MW – – 11--80 turbines80 turbines – – GBSGBS--MonopileMonopile ((--TripileTripile))11-->100 m>100 m – – 00--43 km43 km – – 1.21.2--194 MW194 MW – – 11--72 turbines72 turbines – – GBSGBS--MonopileMonopile--ArtificialArtificial

islandisland--TripodTripod--TripileTripile--JacketJacket--TLPTLP--SparSpar

19901990

20032003

20092009


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Design toolsDesign tools

•• More tools for combined loadsMore tools for combined loads

•• Wake models & wind conditionsWake models & wind conditions

•• Soil mechanics & structural detailsSoil mechanics & structural details•• Measurements at farmsMeasurements at farms

•• Update GLUpdate GL – – Final DNV and IECFinal DNV and IEC

General developments related to researchGeneral developments related to research

New conceptsNew concepts•• Increase in scaleIncrease in scale

•• (Small) Turbine concept changes(Small) Turbine concept changes

•• Demonstrators of new support conceptsDemonstrators of new support concepts•• ETI programmeETI programme

•• DARWINDDARWIND


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ProjectsProjects

ToolsTools


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Wind shearWind shear19991999

62 m62 mNorth SeaNorth Sea -- 20032003


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OWEZOWEZ

20052005

116 m116 m

Project:Project:

PhD@SeaPhD@Sea – – Site dataSite data(Wind shear)(Wind shear)

unstable - stable

[Bulk Richardson number method]

M e a s u r e d / p

r e d i c t e d


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ExtremesExtremes

IEC 61400IEC 61400--1 (onshore) ed.2 (1999)1 (onshore) ed.2 (1999)

IEC 61400IEC 61400--1 (onshore) ed.3 (2003)1 (onshore) ed.3 (2003)


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IEC 61400IEC 61400--3 (offshore) Working draft (2005)3 (offshore) Working draft (2005)

Influence of fitted distribution

50-year extreme

Load P r o b a b i l i t y o f e x c

e e d a n c e

Project:Project:

Extreme loads usingExtreme loads using

measured and calculatedmeasured and calculatedresponses for offshoreresponses for offshore

applicationsapplications


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Frequency domainFrequency domain

BlythBlyth20002000

2 turbines2 turbines

LillgrundLillgrund20072007

48 turbines48 turbines


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RambRambøøllll about Kentish Flatsabout Kentish Flats Project:Project:AeroAero--elastic simulation ofelastic simulation of

offshore wind turbines in theoffshore wind turbines in the

frequency domainfrequency domain

Overview of contributions to loads

Frequency

W i n d s p e e d


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Optical measurementsOptical measurements

DOWEC projectDOWEC project -- 20032003Strain gaugesStrain gauges

OpticalOptical fibresfibres


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Beatrice 2006Beatrice 2006 -- DOWNViNDDOWNViND

Project:Project:Identifying the dynamics ofIdentifying the dynamics of

large wind turbines inlarge wind turbines in

operation using opticaloperation using optical

techniquestechniques


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Blade fatigueBlade fatigue

Blyth 2002 (Not fatigue !)Blyth 2002 (Not fatigue !)


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Project:Project:

Wind turbine rotor bladeWind turbine rotor bladecomposites: Improvedcomposites: Improved

strength and life predictionstrength and life prediction

145

55

35

25

55

2

150

3.6

R=105

1715

2538

90

1.653.6

15

90

3.7

10

Definition of standard tests


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Farm wakesFarm wakes


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Horns Rev 1 and 2Horns Rev 1 and 2

20022002 -- 20092009

Project:Project:

Wind farm interactionWind farm interaction -- TheTheeffect of wind farming oneffect of wind farming on

mesoscalemesoscale flowflow

Streamwise position

W i n d s p

e e d


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Designing toolDesigning tool

TunTunøø Knob 1995Knob 1995

LillgrundLillgrund 20072007


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Project:Project:

PhD@SeaPhD@Sea – – Concept designConcept design

DarwindDarwind -- TodayToday

Design emulation as ‘mock up’

Asynchronous design processes


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ProjectsProjects

ConceptsConcepts


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System identificationSystem identification

OWTES studyOWTES study -- 20042004


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Project:Project:

System identificationSystem identification – – AnAnessential step to advancedessential step to advanced

controlcontrol

Time

A m p l i t u d e

Excitation signal design

OWTES studyOWTES study -- 20042004

1 s t n a t u r a l f r e q u e n c y


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Delft Offshore TurbineDelft Offshore Turbine -- FeasibilityFeasibility

UtgrundenUtgrunden 20002000

AerogeneratorAerogenerator – – Tomorrow?Tomorrow?

ETIETI -- 20092009TechnologyTechnology programmeprogramme offshore windoffshore wind


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Project:Project:

PhD@SeaPhD@Sea – – ConceptsConcepts(Seawater(Seawater--based hydraulicsbased hydraulics

for offshore wind turbines)for offshore wind turbines)

Performance assessment

Wind speed

P o w e r

DOT

5MREpower

July 2003July 2003 Nov 2009Nov 2009


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Thermoplastic bladesThermoplastic blades

TopologyTopology -- TodayToday

TopologyTopology – – Tomorrow?Tomorrow?


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Project:Project:

PhD@SeaPhD@Sea – – Large bladesLarge blades

(Thermoplastic composites)(Thermoplastic composites)

Smart rotorsSmart rotors – – Tomorrow?Tomorrow?


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Looking ahead:Looking ahead:

Contributions ofContributions of WE@SeaWE@Sea programmeprogramme

Cheaper, more reliable and more sustainable solutionsCheaper, more reliable and more sustainable solutions

•• Better load & effect assessmentBetter load & effect assessment

Extreme load extrapolationExtreme load extrapolation

Wind shear in realityWind shear in reality

Complementary measurements of dynamicsComplementary measurements of dynamics

Fatigue of composite materialFatigue of composite material•• Lower loadsLower loads

Quick load assessment in design loop (FD)Quick load assessment in design loop (FD)

Advanced control with SIDAdvanced control with SID

•• Lower lossesLower lossesBetterBetter sitingsiting of wind farms relative to othersof wind farms relative to others


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Looking ahead:Looking ahead:

Contributions ofContributions of WE@SeaWE@Sea programmeprogramme

Cheaper, more reliable and more sustainable solutionsCheaper, more reliable and more sustainable solutions

•• System level tradeSystem level trade--offsoffs

Getting wind farm requirements into turbine design processGetting wind farm requirements into turbine design process

•• New principlesNew principles

Hydraulic energy conversion & transmissionHydraulic energy conversion & transmission

Welding of thermoplastic bladesWelding of thermoplastic blades•• New materialsNew materials

Recycling of thermoplastic compositesRecycling of thermoplastic composites


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More details on Day 2 of conferenceMore details on Day 2 of conference

ToolsTools

•• Loading conditions offshore: Wind shearLoading conditions offshore: Wind shear

•• TURBU@SeaTURBU@Sea: Integral design and analysis of offshore wind turbines: Integral design and analysis of offshore wind turbines•• Dynamic modelling of offshore wind power plantDynamic modelling of offshore wind power plant

ConceptsConcepts

•• System identification for advanced controlSystem identification for advanced control

•• Large blades of thermoplastic compositesLarge blades of thermoplastic composites

•• Delft Offshore wind Turbine concept (DOT)Delft Offshore wind Turbine concept (DOT)


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Thanks to the project partnersThanks to the project partners

•• WimWim BierboomsBierbooms (TUD)(TUD)

•• Arno Brand (ECN)Arno Brand (ECN)

•• NielsNiels DiepeveenDiepeveen (TUD)(TUD)

•• II HoutzagerHoutzager (TUD)(TUD)

•• StoyanStoyan KanevKanev (ECN)(ECN)

•• BB KulcsarKulcsar (TUD)(TUD)

•• RogierRogier NijssenNijssen (WMC)(WMC)•• MuammerMuammer OzbekOzbek (TUD)(TUD)

……and thank you for your attention!and thank you for your attention!

•• JohanJohan PeeringaPeeringa (ECN)(ECN)

•• KjeltKjelt van Rijswijk (TUD)van Rijswijk (TUD)

•• DanielDaniel RixenRixen (TUD)(TUD)

•• AmeyaAmeya SatheSathe (TUD)(TUD)

•• FeikeFeike SavenijeSavenije (ECN)(ECN)

•• JulieJulie TeuwenTeuwen (TUD)(TUD)

•• MichielMichiel ZaaijerZaaijer (TUD)(TUD)

Documents

We@Sea - Tools and Concepts