Design of a small-scale wind turbine blade of glass fibre/epoxy composite for electrification of rural villages in Ethiopia: a case study

2021 ◽  
Vol 10 (1) ◽  
pp. 40
Author(s):  
Kassahun Gashu Melese ◽  
Ram Singh Rana ◽  
Tejas Pramod Naik ◽  
Zewdu Abdi Debele
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Glass Fibre ◽  
Epoxy Composite ◽  
Wind Turbine Blade ◽  
Small Scale ◽  
Rural Villages

An Investigation of the Aerodynamic Response of a Wind Turbine Blade to Tower Shadow

2004 ◽  
Vol 126 (4) ◽  
pp. 1034-1040 ◽  
Author(s):  
Xabier Munduate ◽  
Frank N. Coton ◽  
Roderick A.McD. Galbraith
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Careful Consideration ◽  
Wind Turbine Blade ◽  
Small Scale ◽  
Force Coefficient ◽  
Velocity Deficit ◽  
Pressure Transducers ◽  
Aerodynamic Model ◽  
Tower Shadow

This paper presents results from a wind tunnel based examination of the response of a wind turbine blade to tower shadow in head-on flow. In the experiment, one of the blades of a small-scale, two-bladed, downwind turbine was instrumented with miniature pressure transducers to allow recording of the blade surface pressure response through tower shadow. The surface pressures were then integrated to provide the normal force coefficient responses presented in this paper. It is shown that it is possible to reproduce the measured responses using an indicially formulated unsteady aerodynamic model applied to a cosine wake velocity deficit. It is also shown that agreement between the model and the measured data can be improved by careful consideration of the velocity deficit geometry.

scholarly journals Design and Development of a New Small-Scale Wind Turbine Blade

2015 ◽  
Author(s):  
Ulan Dakeev ◽  
Quamrul Mazumder ◽  
Faruk Yildiz ◽  
Kenan Baltaci
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Small Scale ◽  
Design And Development

Cable Reinforced Small Scale Horizontal Axial Wind Turbine

2013 ◽  
Vol 394 ◽  
pp. 309-313
Author(s):  
Yuan Ma ◽  
Pan Zeng ◽  
Hong Ya Lu ◽  
Yue Jie Xu
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbines ◽  
Noise Level ◽  
Wind Turbine Blade ◽  
Small Scale ◽  
Optimum Location ◽  
Reinforcement Structure ◽  
First Order ◽  
Vibration Tests

In this paper, a cable reinforcement structure for small scale horizontal axial wind turbines is proposed. Shock-vibration tests were performed on the cable reinforced structure with different parameters of cable installation. The first order frequency of the blade was chosen to represent the stiffness of the blade rotor. According to the results, an optimum location of cable reinforcement exists at around 1/3 length of the wind turbine blade, and the first order frequency of the blade rotor will rise with the tension of the cable in a certain range. Further analysis showed that besides improving the reliability of the wind turbine rotors, the cable reinforcement structure also provides a possibility to use cheaper materials for blade manufacturing and also control the noise level of small scale horizontal axial wind turbines.

scholarly journals Airfoil types effect on geometry and performance of a small-scale wind turbine blade design

2020 ◽  
Vol 18 (1) ◽  
pp. 132-139
Author(s):  
Sigit Iswahyudi ◽  
S Sutrisno ◽  
P Prajitno ◽  
Setyawan Wibowo
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Small Scale ◽  
Blade Design ◽  
And Performance ◽  
Turbine Blade Design

In-situ damage localization for a wind turbine blade through outlier analysis of stochastic dynamic damage location vector-induced stress resultants

2016 ◽  
Vol 16 (6) ◽  
pp. 745-761 ◽  
Author(s):  
Martin Dalgaard Ulriksen ◽  
Dmitri Tcherniak ◽  
Lasse M Hansen ◽  
Rasmus Johan Johansen ◽  
Lars Damkilde ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Small Scale ◽  
Stochastic Dynamic ◽  
Damage Localization ◽  
Outlier Analysis ◽  
Damage Location ◽  
Dynamic Damage ◽  
Characteristic Stress

Today, structural integrity inspections of wind turbine blades are typically carried out by the use of rope or platform access. Since these inspection approaches are both tedious and extremely costly, a need for a method facilitating reliable, remote monitoring of the blades has been identified. In this article, it is examined whether a vibration-based damage localization approach proposed by the authors can provide such reliable monitoring of the location of a structural damage in a wind turbine blade. The blade, which is analyzed in idle condition, is subjected to unmeasured hits from a mounted actuator, yielding vibrations that are measured with a total of 12 accelerometers; of which 11 are used for damage localization. The employed damage localization method is an extended version of the stochastic dynamic damage location vector method, which, in its origin, is a model-based method that interrogates damage-induced changes in a surrogate of the transfer matrix. The surrogate’s quasi-null vector associated with the lowest singular value is converted into a pseudo-load vector and applied to a numerical model of the healthy structure in question, hereby, theoretically, yielding characteristic stress resultants approaching zero in the damaged elements. The proposed extension is based on outlier analysis of the characteristic stress resultants to discriminate between damaged elements and healthy ones; a procedure that previously, in the context of experiments with a small-scale blade, has proved to mitigate noise-induced anomalies and systematic, non-damage-associated adverse effects.

Design methodology for composite structures: A small low air-speed wind turbine blade case study

2012 ◽  
Vol 36 ◽  
pp. 296-305 ◽  
Author(s):  
C. Monroy Aceves ◽  
M.P.F. Sutcliffe ◽  
M.F. Ashby ◽  
A.A. Skordos ◽  
C. Rodríguez Román
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Composite Structures ◽  
Design Methodology ◽  
Wind Turbine Blade ◽  
Air Speed
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