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Definition of the IEA Wind 22-Megawatt Offshore Reference Wind T
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Definition of the IEA Wind 22-Megawatt Offshore Reference Wind Turbine
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Downloaded from orbit.dtu.dk on: apr. 12, 2024
Definition of the IEA Wind 22-Megawatt Offshore Reference Wind Turbine
Zahle, Frederik; Barlas, Athanasios; Lønbæk, Kenneth; Bortolotti, Pietro; Zalkind, Daniel; Wang, Lu ;
Labuschagne, Casper ; Sethuraman, Latha; Barter, Garrett
Link to article, DOI:
10.11581/DTU.00000317
Publication date:
2024
Document Version
Publisher's PDF, also known as Version of record
Link back to DTU Orbit
Citation (APA):
Zahle, F., Barlas, A., Lønbæk, K., Bortolotti, P., Zalkind, D., Wang, L., Labuschagne, C., Sethuraman, L., &
Barter, G. (2024). Definition of the IEA Wind 22-Megawatt Offshore Reference Wind Turbine. Technical
University of Denmark. https://doi.org/10.11581/DTU.00000317
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April 2024
IEA Wind TCP Task 55
Definition of the IEA Wind
22-Megawatt Offshore
Reference Wind Turbine
Technical Report
![](https://csdnimg.cn/release/download_crawler_static/89285389/bg3.jpg)
Definition of the IEA Wind 22-Megawatt Offshore
Reference Wind Turbine
DTU Wind and
Energy Systems
E-report
Public
Frederik Zahle
1
Thanasis Barlas
1
Kenneth Lønbæk
1
Pietro Bortolotti
2
Daniel Zalkind
2
Lu Wang
2
Casper Labuschagne
2
Latha Sethuraman
2
Garrett Barter
2
1
Technical University of Denmark
2
National Renewable Energy Laboratory
DTU Wind Energy Report E-0243
Compiled on Friday 5
th
April, 2024
![](https://csdnimg.cn/release/download_crawler_static/89285389/bg4.jpg)
Document information
Title: Definition of the IEA Wind 22-Megawatt
Offshore Reference Wind Turbine
Authors: Frederik Zahle
1
, Thanasis Barlas
1
, Kenneth Lønbæk
1
, Pietro
Bortolotti
2
, Daniel Zalkind
2
, Lu Wang
2
, Casper Labuschagne
2
, Latha
Sethuraman
2
, Garrett Barter
2
1
Technical University of Denmark
2
National Renewable Energy Laboratory
Copyright: Reproduction of this publication in whole or in part must include the
customary bibliographic citation, including author attribution, report ti-
tle, etc.
Published by: DTU, Department of Wind and Energy Systems, Frederiksborgvej 399,
DK-4000, Roskilde, Denmark, www.dtu.dk
Report No.: DTU Wind Energy Report E-0243
Issue No.: 1.0.0
Issue Type: Public
Date of issue.: Friday 5
th
April, 2024
ISBN: 978-87-87335-71-3
DOI: https://doi.org/10.11581/DTU.00000317
2 DTU Wind E-0243
![](https://csdnimg.cn/release/download_crawler_static/89285389/bg5.jpg)
Contents
1 Introduction 5
1.1 Importance of Reference Wind Turbines . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Need for a Larger Offshore Reference Wind Turbine . . . . . . . . . . . . . . . . . . . . 5
1.3 Design Process and Report Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Overall Turbine Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Model Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5.1 Versioning and Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Rotor 8
2.1 Preliminary Load-Level Investigations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Aerostructural Rotor Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.1 Design Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.2 Overall Rotor Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.3 Material Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.4 Airfoil Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.5 Geometric Definition of the Blade . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.6 Structural Characteristics of the Blade . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.7 Rotor Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3 Strain Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.4 Structural Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3 Hub, Drivetrain, and Nacelle 26
3.1 Hub System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2 Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.2.1 Electromagnetic and Thermal Performance . . . . . . . . . . . . . . . . . . . . . 29
3.2.2 Structural Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.2.3 Final Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.3 Main Shaft, Bearings, Turret, and Bedplate . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.4 Yaw System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.5 Equivalent Rigid-Body Properties of the Nacelle . . . . . . . . . . . . . . . . . . . . . . . 34
4 Tower and Monopile 36
4.1 Design Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.2 Structural Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3 DTU Wind E-0243
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