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Title: Fully vs. Sequentially Coupled Loads Analysis of Offshore Wind Turbines

Abstract

The design and analysis methods for offshore wind turbines must consider the aerodynamic and hydrodynamic loads and response of the entire system (turbine, tower, substructure, and foundation) coupled to the turbine control system dynamics. Whereas a fully coupled (turbine and support structure) modeling approach is more rigorous, intellectual property concerns can preclude this approach. In fact, turbine control system algorithms and turbine properties are strictly guarded and often not shared. In many cases, a partially coupled analysis using separate tools and an exchange of reduced sets of data via sequential coupling may be necessary. In the sequentially coupled approach, the turbine and substructure designers will independently determine and exchange an abridged model of their respective subsystems to be used in their partners' dynamic simulations. Although the ability to achieve design optimization is sacrificed to some degree with a sequentially coupled analysis method, the central question here is whether this approach can deliver the required safety and how the differences in the results from the fully coupled method could affect the design. This work summarizes the scope and preliminary results of a study conducted for the Bureau of Safety and Environmental Enforcement aimed at quantifying differences between these approaches through aero-hydro-servo-elasticmore » simulations of two offshore wind turbines on a monopile and jacket substructure.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
Bureau of Ocean Energy Management (BOEM) and Bureau of Safety and Environmental Enforcement (BSEE)
OSTI Identifier:
1365701
Report Number(s):
NREL/PO-5000-68368
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the American Wind Energy Association's (AWEA) WINDPOWER 2017 Conference & Exhibition, 22-25 May 2017, Anaheim, California
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; offshore wind energy; wind turbines; coupling; analysis; substructure; turbine control system dynamics

Citation Formats

Damiani, Rick, Wendt, Fabian, Musial, Walter, Finucane, Z., Hulliger, L., Chilka, S., Dolan, D., Cushing, J., O'Connell, D., and Falk, S. Fully vs. Sequentially Coupled Loads Analysis of Offshore Wind Turbines. United States: N. p., 2017. Web.
Damiani, Rick, Wendt, Fabian, Musial, Walter, Finucane, Z., Hulliger, L., Chilka, S., Dolan, D., Cushing, J., O'Connell, D., & Falk, S. Fully vs. Sequentially Coupled Loads Analysis of Offshore Wind Turbines. United States.
Damiani, Rick, Wendt, Fabian, Musial, Walter, Finucane, Z., Hulliger, L., Chilka, S., Dolan, D., Cushing, J., O'Connell, D., and Falk, S. Mon . "Fully vs. Sequentially Coupled Loads Analysis of Offshore Wind Turbines". United States. doi:. https://www.osti.gov/servlets/purl/1365701.
@article{osti_1365701,
title = {Fully vs. Sequentially Coupled Loads Analysis of Offshore Wind Turbines},
author = {Damiani, Rick and Wendt, Fabian and Musial, Walter and Finucane, Z. and Hulliger, L. and Chilka, S. and Dolan, D. and Cushing, J. and O'Connell, D. and Falk, S.},
abstractNote = {The design and analysis methods for offshore wind turbines must consider the aerodynamic and hydrodynamic loads and response of the entire system (turbine, tower, substructure, and foundation) coupled to the turbine control system dynamics. Whereas a fully coupled (turbine and support structure) modeling approach is more rigorous, intellectual property concerns can preclude this approach. In fact, turbine control system algorithms and turbine properties are strictly guarded and often not shared. In many cases, a partially coupled analysis using separate tools and an exchange of reduced sets of data via sequential coupling may be necessary. In the sequentially coupled approach, the turbine and substructure designers will independently determine and exchange an abridged model of their respective subsystems to be used in their partners' dynamic simulations. Although the ability to achieve design optimization is sacrificed to some degree with a sequentially coupled analysis method, the central question here is whether this approach can deliver the required safety and how the differences in the results from the fully coupled method could affect the design. This work summarizes the scope and preliminary results of a study conducted for the Bureau of Safety and Environmental Enforcement aimed at quantifying differences between these approaches through aero-hydro-servo-elastic simulations of two offshore wind turbines on a monopile and jacket substructure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 19 00:00:00 EDT 2017},
month = {Mon Jun 19 00:00:00 EDT 2017}
}

Conference:
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