Convex optimization of space frame support structures for offshore wind turbines

Kasper Sandal, D. Zwick, Michael Muskulus

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Abstract

The aim of the present project is to reduce the cost of support structures for offshore wind turbines by minimizing their total steel mass. Basic considerations for an iterative optimization approach were presented by Zwick, Muskulus and Moe (2012), and these have been improved with a convex problem formulation and faster convergence. Simplified fatigue load assessments have been studied, and computational expenses of site-specific optimization has been reduced with a factor of 66 compared to complete analysis. This has been accomplished by using load histories from the initial design to compute correction factors for each member, which enables a single load case of 10 minutes to represent 11 load cases of 60 minutes. A jacket has been optimized with this approach, and a benchmark with the full-height lattice tower concept is presented.
Original languageEnglish
Publication date2014
Number of pages4
Publication statusPublished - 2014
Externally publishedYes
Event10th EAWE PhD Seminar on Wind Energy in Europe - University Campus, Orleans, France
Duration: 28 Oct 201431 Oct 2014
Conference number: 10
https://eawephdseminar.sciencesconf.org/

Seminar

Seminar10th EAWE PhD Seminar on Wind Energy in Europe
Number10
LocationUniversity Campus
Country/TerritoryFrance
CityOrleans
Period28/10/201431/10/2014
Internet address

Bibliographical note

Based on a master thesis from NTNU

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