vawts for offshore applicationsrated wind speed m/s 14 14 cut in wind speed m/s 4 4 cut out wind...
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VAWTs for offshore applications
Workshop on VAWTs for offshore applications
UiS Stavanger 14/12 2016
Uwe Schmidt Paulsen, [email protected]
Wind turbine Loads and Control
14 December 2016 DTU Wind Energy, Technical University of Denmark
DTU Wind energy
Resource Assessment Modelling
Meteorology and Remote
Sensing
Integration and Planning
Loads and Control
Fluid Mechanics
Aerodynamic Design
Structures and
Component Design
Test and Measure-
ments
Material Science &
Characterization
Composites & Materials Mechanics
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Offshore wind energy
Siting and integration
Wind turbine technology
Research based consultancy and tests
Education and teaching
14 March 2016
14 December 2016 DTU Wind Energy, Technical University of Denmark
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Resource Assessment Modelling
Microscale modelling
COAWST-WBLM Coupled-Ocean-Atmosphere-Wave-Sediment-Transport – Wave Boundary Layer Model by DTU Wind Energy and DHI
COAWST-WBLM
COAWST-WBLM
14 December 2016 DTU Wind Energy, Technical University of Denmark
COAWST-WBLM
Wind speed at 10 m, 2006-11-01, 4 a
Significant wave height, 2006-11-01, 4
Example of how the modeling system can be used for special case study, here
14 December 2016 DTU Wind Energy, Technical University of Denmark
Turbine response analysis is the key The Wind Turbine Loads and Control section (LAC) focuses on • modeling and analysis of loads and dynamics, • aero-elastic stability • control of wind turbines and wind farms • conceptual design studies LAC implements the research in cooperation with industry and in software tools and in courses
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14 December 2016 DTU Wind Energy, Technical University of Denmark
The aero-elastic code HAWC2
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HAWC2 (Horizontal Axis Wind turbine simulation Code 2nd generation) is a FE-aero-elastic code intended for calculating wind turbine response in time domain.
14 December 2016 DTU Wind Energy, Technical University of Denmark
Wind turbine load & production prediction
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14 December 2016 DTU Wind Energy, Technical University of Denmark
EU INFLOW Project
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[1] http://www.inflow-fp7.eu
Initial design: 3-bladed stall regulated VAWT
Target: Twin VAWT 2-bladed floating system with active pitch
Fully coupled (wind-waves) aeroelastic analysis of the system using HAWC2 code
14 December 2016 DTU Wind Energy, Technical University of Denmark
Airfoil Design tool: AirfoilOpt/AirfoilOpt2 using Xfoil and EllipSys2D
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Risø-A1-18
Risø-P-18
Risø-B1-18
Risø-C2-18
14 December 2016 DTU Wind Energy, Technical University of Denmark
Details from DeepWind project
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14 December 2016 DTU Wind Energy, Technical University of Denmark
Concept components description
14 5 January 2018
1. Darrieus Rotor
2. Spar buoy
3. Pultruded Rotor blades
4. Torque absorption system
5. Mooring line system
Bearing system at 4
PM Generator module
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14 December 2016 DTU Wind Energy, Technical University of Denmark
Scientific contents DeepWind (2010-2014)
15 23 -11- 2016
MARIN,
9. Dissemination of results
14 December 2016 DTU Wind Energy, Technical University of Denmark
1. Baseline 5MW scaled down to 1kW
2. Proof of concept 1kW scaled up to 5MW
Details of the past project
Scaling dimensions with 1:70.71
Scaling masses with 1:353,500
Property Dim Demonstrator 5MW to 1kW Rated power kW 1.000 1.000 Swept area m2 2.55 2.399 Rotor radius m 1.000 0.853 Rotor height m 2.000 2.016 Rotor tube diameter (top) m 0.150 0.0653 Rotor tube diameter (bottom) m 0.150 0.0905 No of blades - 2 2 Blade chord m 0.12 0.071 Solidity - 0.240 0.1653 Floater hull height m 3.000 1.648 Floater hull diameter (max) m 0.400 0.1174 Total height m 5.000 3.670 Rated rotational speed rpm 300 421 Rated wind speed m/s 14 14 Cut in wind speed m/s 4 4 Cut out wind speed m/s 25 25 Blade mass (1 blade) kg 4.55 0.136 Rotor mass kg 8.20 1.003 Floater mass kg 12.30 3.1850 Ballast mass kg - 10.646 Generator mass kg 138.0 0.820 Torque arm mass (1 arm) kg - 0.048 Total floating mass kg 167.6 16.332 Mooring mass (1 chain) kg - 0.308
14 December 2016 DTU Wind Energy, Technical University of Denmark
DeepWind Demonstration-lab & near-to-real testing
14 December 2016 DTU Wind Energy, Technical University of Denmark
Selected Results FVAWTs DeepWind
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Ragni 2014
Tailored Airfoil development
14 December 2016 DTU Wind Energy, Technical University of Denmark
Selected Results FVAWTs DeepWind
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Tip speed ratio
CP
Milano wind tunnel Ø2m rotor(deepwind) upright
SNL Ø2m rotor-free field measurements
Wind turbine effciciency
14 December 2016 DTU Wind Energy, Technical University of Denmark
DTU activities Resources analysis(met-ocean conditions)
Integration of design and simulation tools(loads- turbine response, fused/MDAO
approach)
Detailed design of aerodynamic and mechanical parts(tailored airfoils design)
Benchmarking HAWC2 with high fidelity codes)
Built(prototype)
Testing and results comparison
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14 December 2016 DTU Wind Energy, Technical University of Denmark
Topics to be addressed • How can we achieve better COE and guaranty less costly floating offshore
wind turbines – Systematic survey on high performance airfoils for deep stall – Design of tailored airfoils(target CP≈ 0.4-0.5) – Simple vs pitch control – A robust simple mechanical and electrical design – Demonstrate a robust resource prediction tool for siting
• Demonstration – Adaptions of design for demo – Demonstrate technology with testing at site – How to boost value for money?(fish/marine food farming technology) – Cost study
• Capitalisation of existing knowhow – Integration of electrical and mechanical solutions from DeepWind
Enabling Marine technologies for better food in offshore environment • BG-04-2017: Multi-use of the oceans marine space, offshore and near-
shore: Enabling technologies (H2020-BG-2016-2017) 21
14 December 2016 DTU Wind Energy, Technical University of Denmark
Challenge BG-04-2017 • Combining several activities such as renewable energy, aquaculture,
maritime transport and related services in the same marine space, including in multi-use platforms, can serve to divide and reduce the costs of offshore operations and the demand on the space needed for different activities. Research on multi-use platforms funded under the FP7 call ‘The Oceans of Tomorrow’ has already provided promising designs, technological solutions and models for combining activities in terms of economic potential and environmental impact. However, before reaching a demonstration pilot stage, further technological research and innovations are needed to reduce risks for operators and investors.
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