Optimisation of a steel tower for a wind turbine structure

Uys, P. E.; Fárkas, J.; Jármai, Kâroly; Tonder, F. Van

doi:10.1016/j.engstruct.2006.08.011

Cited by 111 publications

(53 citation statements)

References 12 publications

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“…In this paper, the number of stiffeners is set to 5 as a constant. In [8] it was mentioned the cost difference for the variation in number of ring-stiffeners (5-15) was too small (1.5%-3.6%). The total material cost for each shell is:…”

Section: Objective Function To Be Minimizedmentioning

confidence: 99%

“…In this study, the cost calculation procedure for a wind turbine tower proposed by [8] is used to conduct the structural optimization of a wind turbine tower. This procedure finds the minimum cost depending on constraints such as the local buckling of the flat ring stiffeners, local shell buckling, and panel ring buckling in the tubular steel structure of the wind turbine.…”

Section: The Optimal Design Of a Wind Turbine Steel Towermentioning

confidence: 99%

“…The welding cost for a complete unstiffened shell segment is found by combining the five elements using four circumferential butt welds. This implies that the welding costs [8] can be calculated for a shell segment:…”

Section: Objective Function To Be Minimizedmentioning

confidence: 99%

“…To prevent local shell buckling, the sum of the axial (a) and bending (b) stresses should be less than the critical buckling stress value [8,16]:…”

Section: Constraintmentioning

confidence: 99%

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A Virtual Tool for Minimum Cost Design of a Wind Turbine Tower with Ring Stiffeners

Karpat

2013

Energies

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Currently, renewable energy resources are becoming more important to reduce greenhouse gas emissions and increase energy efficiency. Researchers have focused on all components of wind turbines to increase reliability and minimize cost. In this paper, a procedure including a cost analysis method and a particle swarm optimization algorithm has been presented to efficiently design low cost steel wind turbine towers. A virtual tool is developed in MATLAB for the cost optimization of wind turbine steel towers with ring stiffeners using a particle swarm optimization algorithm. A wind turbine tower optimization problem in the literature is solved using the developed computer program. In the optimization procedure the optimization results match very well with the optimization results obtained previously. The wall thickness of the shell segments and the dimensions of the ring stiffeners are selected as the design variables, and the limits of the local buckling for the flat ring stiffeners, the local shell buckling limit, the panel ring buckling limit and the limitation of the frequency are considered the design constraints. Numerical examples are presented to understand the impacts of the design variables on the total cost of the wind turbine tower.

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Section: Objective Function To Be Minimizedmentioning

confidence: 99%

Section: The Optimal Design Of a Wind Turbine Steel Towermentioning

confidence: 99%

Section: Objective Function To Be Minimizedmentioning

confidence: 99%

“…To prevent local shell buckling, the sum of the axial (a) and bending (b) stresses should be less than the critical buckling stress value [8,16]:…”

Section: Constraintmentioning

confidence: 99%

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A Virtual Tool for Minimum Cost Design of a Wind Turbine Tower with Ring Stiffeners

Karpat

2013

Energies

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“…Uys et al explored the optimal design of an onshore monopile turbine under a number of buckling constraints using a zeroth order search algorithm [3]. Chen and Yang et al adopt the Particle Swarm Optimization (PSO) algorithm to optimize both shape and size of the lattice partition in a wind turbine tower with lattice-tubular hybrid substructure [4].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Jacket Supporting Structures for Offshore Wind Turbines Using CBO and ECBO Algorithms

Kaveh¹,

Sabeti²

2017

Period. Polytech. Civil Eng.

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Seismic analysis of a tall metal wind turbine support tower with realistic geometric imperfections

Sadowski

Cámara

Mariotti

et al. 2016

Earthq Engng Struct Dyn

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analysis of a tall metal wind turbine support tower with realistic geometric imperfections. Earthquake Engineering and Structural Dynamics, 46(2), pp. 201-219. doi: 10.1002/eqe.2785 This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent AbstractThe global growth in wind energy suggests that wind farms will increasingly be deployed in seismically active regions, with large arrays of similarly-designed structures potentially at risk of simultaneous failure under a major earthquake. Wind turbine support towers are often constructed as thin-walled metal shell structures, wellknown for their imperfection sensitivity, and are susceptible to sudden buckling failure under compressive axial loading.This study presents a comprehensive analysis of the seismic response of a 1.5 MW wind turbine steel support tower modelled as a near-cylindrical shell structure with realistic axisymmetric weld depression imperfections. A selection of twenty representative earthquake ground motion records, ten 'near-fault' and ten 'far-field', was applied and the aggregate seismic response explored using lateral drifts and total plastic energy dissipation during the earthquake as structural demand parameters.The tower was found to exhibit high stiffness, though global collapse may occur soon after the elastic limit is exceeded through the development of a highly unstable plastic hinge under seismic excitations. Realistic imperfections were found to have a significant effect on the intensities of ground accelerations at which damage initiates and on the failure location, but only a small effect on the vibration properties and the response prior to damage. Including vertical accelerations similarly had a limited effect on the elastic response, but potentially shifts the location of the plastic hinge to a more slender and therefore weaker part of the tower. The aggregate response was found to be significantly more damaging under near-fault earthquakes with pulse-like effects and large vertical accelerations than far-field earthquakes without these aspects. KeywordsThin metal shell structure, imperfection sensitivity, seismic response, multiple stripe analysis, near-fault ground motions, vertical ground acceleration.

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Optimisation of a steel tower for a wind turbine structure

Cited by 111 publications

References 12 publications

A Virtual Tool for Minimum Cost Design of a Wind Turbine Tower with Ring Stiffeners

A Virtual Tool for Minimum Cost Design of a Wind Turbine Tower with Ring Stiffeners

Optimal Design of Jacket Supporting Structures for Offshore Wind Turbines Using CBO and ECBO Algorithms

Seismic analysis of a tall metal wind turbine support tower with realistic geometric imperfections

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