Inverse load calculation procedure for offshore wind turbines and application to a 5‐MW wind turbine support structure
Abstract
Abstract A significant number of wind turbines installed today have reached their designed service life of 20 years, and the number will rise continuously. Most of these turbines promise a more economical performance if they operate for more than 20 years. To assess a continued operation, we have to analyze the load‐bearing capacity of the support structure with respect to site‐specific conditions. Such an analysis requires the comparison of the loads used for the design of the support structure with the actual loads experienced. This publication presents the application of a so‐called inverse load calculation to a 5‐MW wind turbine support structure. The inverse load calculation determines external loads derived from a mechanical description of the support structure and from measured structural responses. Using numerical simulations with the software fast , we investigated the influence of wind‐turbine‐specific effects such as the wind turbine control or the dynamic interaction between the loads and the support structure to the presented inverse load calculation procedure. fast is used to study the inverse calculation of simultaneously acting wind and wave loads, which has not been carried out until now. Furthermore, the application of the inverse load calculation procedure to a real 5‐MW wind turbine support structuremore »
- Authors:
-
[1];
- Pahn Ingenieure Am Seegraben 17b 03051 Cottbus Germany
- Institut für Statik und Dynamik Leibniz Universität Hannover Appelstraße 9A 30167 Hannover Germany
- National Renewable Energy Laboratory 15013 Denver West Parkway Golden Colorado 80401 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1400848
- Grant/Contract Number:
- DE‐AC36‐08GO28308
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Wind Energy
- Additional Journal Information:
- Journal Name: Wind Energy Journal Volume: 20 Journal Issue: 7; Journal ID: ISSN 1095-4244
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Pahn, T., Rolfes, R., and Jonkman, J. Inverse load calculation procedure for offshore wind turbines and application to a 5‐MW wind turbine support structure. United Kingdom: N. p., 2017.
Web. doi:10.1002/we.2088.
Pahn, T., Rolfes, R., & Jonkman, J. Inverse load calculation procedure for offshore wind turbines and application to a 5‐MW wind turbine support structure. United Kingdom. https://doi.org/10.1002/we.2088
Pahn, T., Rolfes, R., and Jonkman, J. Mon .
"Inverse load calculation procedure for offshore wind turbines and application to a 5‐MW wind turbine support structure". United Kingdom. https://doi.org/10.1002/we.2088.
@article{osti_1400848,
title = {Inverse load calculation procedure for offshore wind turbines and application to a 5‐MW wind turbine support structure},
author = {Pahn, T. and Rolfes, R. and Jonkman, J.},
abstractNote = {Abstract A significant number of wind turbines installed today have reached their designed service life of 20 years, and the number will rise continuously. Most of these turbines promise a more economical performance if they operate for more than 20 years. To assess a continued operation, we have to analyze the load‐bearing capacity of the support structure with respect to site‐specific conditions. Such an analysis requires the comparison of the loads used for the design of the support structure with the actual loads experienced. This publication presents the application of a so‐called inverse load calculation to a 5‐MW wind turbine support structure. The inverse load calculation determines external loads derived from a mechanical description of the support structure and from measured structural responses. Using numerical simulations with the software fast , we investigated the influence of wind‐turbine‐specific effects such as the wind turbine control or the dynamic interaction between the loads and the support structure to the presented inverse load calculation procedure. fast is used to study the inverse calculation of simultaneously acting wind and wave loads, which has not been carried out until now. Furthermore, the application of the inverse load calculation procedure to a real 5‐MW wind turbine support structure is demonstrated. In terms of this practical application, setting up the mechanical system for the support structure using measurement data is discussed. The paper presents results for defined load cases and assesses the accuracy of the inversely derived dynamic loads for both the simulations and the practical application. Copyright © 2017 John Wiley & Sons, Ltd.},
doi = {10.1002/we.2088},
journal = {Wind Energy},
number = 7,
volume = 20,
place = {United Kingdom},
year = {Mon Feb 20 00:00:00 EST 2017},
month = {Mon Feb 20 00:00:00 EST 2017}
}
https://doi.org/10.1002/we.2088
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