Structural Design and Analysis of a 10MW Wind Turbine Blade

Cox, Kevin; Echtermeyer, Andreas T.

doi:10.1016/j.egypro.2012.06.101

Cited by 85 publications

(62 citation statements)

References 7 publications

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“…Thick fiberglass is utilized to guarantee the stiffness, leading to the heavy weight of the blade. This presents great challenges in the design of the blade to balance the weight and the stiffness, especially in the extreme-scale wind turbine beyond 5 MW [8]. The other components of the wind turbine increases in scale and cost due to the heavy weight of the blade, which further adds to the difficulty of the transportation, and assembly.…”

Section: Introductionmentioning

confidence: 98%

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A smart segmented blade system for reducing weight of the wind turbine rotor

Zhang

Lei

et al. 2014

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 98%

“…A blade should meet several requirements in terms of the blade stiffness in the design [7][8][9], for instance, the tip deflection, fatigue load, allowable stress, etc. Thick fiberglass is utilized to guarantee the stiffness, leading to the heavy weight of the blade.…”

Section: Introductionmentioning

confidence: 99%

A smart segmented blade system for reducing weight of the wind turbine rotor

Zhang

Lei

et al. 2014

Energy Conversion and Management

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“…Rüzgar kuvveti nedeniyle kanat üzerinde oluşan basınç kanat yapısında yer değiştirme ve gerilmelere neden olmaktadır. Bu durum rüzgar türbin kanatlarının ömürlerini belirlemektedir (Cox, Echtermeyer, 2012). Bu kuvvetler nedeniyle ortaya çıkan gerilmeler malzeme emniyetli gerilme sınırını aşması durumunda kırılma meydana gelmektedir.…”

Section: Introductionunclassified

Design of Horizontal Axis Wind Turbine Blade

Tekeli¹,

Öztürk²,

BAHADIR³

2017

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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ÖzRüzgar türbinlerinin verimli olarak çalışmasında türbin kanatlarının optimum dizaynı önemli bir faktördür. Bu çalışmada, sonlu elemanlar metodu kullanılarak bir rüzgâr türbin kanadının gerilme analizi yapılmıştır. İlk olarak 13,02 m yarıçapında 150kw gücündeki bir rüzgâr türbin kanadının geometrisi belirlenmiş ve kanat profili olarak NACA-4418 profili seçilmiştir. Daha sonra maksimum güç ilkesinden hareketle rotor devir sayısı bulunarak, kanat kök-veteri ile uç-veteri arasındaki burulma açısı belirlenmiştir. Geometrisi belirlenmiş olan yapı dörtgen ve üçgen kabuk elemanlar ile sonlu elemanlara bölünmüştür. Sonlu elemanlar ile modellenen bir rüzgâr türbini kanat yüzeyindeki basınç katsayıları Vortex-Lattice metodu ile elde edilmiştir. Sonlu elemanlar ile yapı analizi için sınır şartları ve malzeme özellikleri belirlenerek veri dosyası hazırlanmıştır. Hazırlanan veri dosyası kullanılarak bilgisayar programı yardımıyla yapı üzerindeki elemanlarda gerilmeler bulunmuştur. Daha sonra ise elde edilen gerilmelere uygun olarak yapının gerilme renklendirmesi yapılmıştır. Anahtar Kelimeler"Rüzgâr Türbin Kanadı, Sonlu Elemanlar Metodu, Gerilme Analizi" AbstractThe optimum design of the wind turbine blade is a very important factor for the efficient performance of wind turbines. In this study, the stress analysis of a wind turbine blade is done with finite element method. First, the geometry of a wind turbine blade which has a 13.02 m diameter and a power of 150-200 KW is determined and NACA-4418 profile is chosen as the blade profile. Next, according to maximum power principle, number of revolution of the rotor is found then, the torsional angle between root chord of blade and tip chord of blade is determined. After that, the structure whose geometry has been established is divided into finite elements being rectangular and triangular shell elements. In order to determine pressure distribution on the structure, it is modeled as a thin wing at mean line direction by dividing proper Vortex-Lattices with consistency of surface structure analysis. By using data obtained here, aerodynamic pressure coefficients are calculated on every element with the help of computer program. After the analysis of a data file is prepared. The stresses on the elements of the structure are calculated by using computer program with this prepared data file. After that, the structure is colored with different colors according to different stress values.

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“…blades, tower and nacelle) and to investigating the dynamic load and load response in larger wind turbines components (e.g. in the works of Jonkman et al and Cox and Echtermeyer), drivetrains, and in particular, gearboxes appear to have received much less attention. Gears are the dominant technology in wind turbine drivetrains; they have a market share above 85% , both onshore and offshore.…”

Section: Introductionmentioning

confidence: 99%

Development of a 5 MW reference gearbox for offshore wind turbines

et al. 2015

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This paper presents detailed descriptions, modelling parameters and technical data of a 5 MW high speed gearbox developed for the National Renewable Energy Laboratory (NREL) offshore 5 MW baseline wind turbine. The main aim of this article is to support the concept studies and researches for large offshore wind turbines by providing a baseline gearbox model with detailed modelling parameters. This baseline gearbox follows the most conventional design types of those used in wind turbines. The gearbox consists of three stages, two planetary and one parallel stage gears. The gear ratios among the stages are calculated in a way to obtain the minimum gearbox weight. The gearbox components are designed and selected based on the offshore wind turbine design codes and validated by comparison with the data available from the manufacturer of large offshore wind turbine prototypes. All parameters required to establish the dynamic model of the gearbox are then provided. Moreover, a maintenance map indicating components with high to low probability of failure is shown. The 5 MW reference gearbox can be used as a baseline for research on wind turbine gearboxes and comparison studies. It can also be employed in global analysis tools to represent a more realistic model of gearbox in the coupled analysis.

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Structural Design and Analysis of a 10MW Wind Turbine Blade

Cited by 85 publications

References 7 publications

A smart segmented blade system for reducing weight of the wind turbine rotor

A smart segmented blade system for reducing weight of the wind turbine rotor

Design of Horizontal Axis Wind Turbine Blade

Development of a 5 MW reference gearbox for offshore wind turbines

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