Impact of wind turbine blade rotation on the lightning strike incidence

2012 ◽  
Author(s):  
Branko M. Radicevic ◽  
Milan S. Savic ◽  
Ion Badea
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Lightning Strike ◽  
Blade Rotation

scholarly journals Effect of Wind Turbine Blade Rotation on Triggering Lightning: An Experimental Study

Energies ◽  
2016 ◽  
Vol 9 (12) ◽  
pp. 1029 ◽  
Author(s):  
Xishan Wen ◽  
Lu Qu ◽  
Yu Wang ◽  
Xiaoyue Chen ◽  
Lei Lan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Blade Rotation

scholarly journals Lightning strike evaluation on composite and biocomposite vertical-axis wind turbine blade using structural health monitoring approach

2018 ◽  
Vol 29 (17) ◽  
pp. 3444-3455 ◽  
Author(s):  
Siti Zubaidah Mat Daud ◽  
Faizal Mustapha ◽  
Zuraimy Adzis
Keyword(s):  
Structural Health Monitoring ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Health Monitoring ◽  
Turbine Blades ◽  
Flax Fibre ◽  
Wind Turbine Blade ◽  
Lightning Strike ◽  
Wind Turbine Blades ◽  
Structural Health

Lightning damages to wind turbine blades increase as the size of wind turbine becomes larger. The damages are quite serious since it contributes to high cost of repairs and loss of electric power production. Since natural plant fibres receive attention nowadays due to low density and high specific strength, the usage of natural fibre to replace synthetic fibre in fabricating the turbine blade will promote a green renewable material. As the application of biocomposite for wind turbine blade has been explored, the effect of lightning strike damage has been required for further test investigation. This article explores the comparative results of performing lightning strike damage testing on composite (fibreglass) and biocomposite (flax fibre) wind turbine blades with protective metal mesh materials. The damage assessments were performed using visual non-destructive inspection methods and piezoelectric sensor as part of structural health monitoring. From the result, it is found that fibreglass blade experienced larger damage area compared to flax fibre blade based on the visual test conducted.

Optimization Design of Composite Wind Turbine Blades Integrating Lightning Strike Analysis

2017 ◽  
Author(s):  
Weifei Hu ◽  
Yeqing Wang
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Turbine Blades ◽  
Optimization Procedure ◽  
Wind Turbine Blade ◽  
Lightning Strike ◽  
Wind Turbine Blades ◽  
Laminate Thickness

This paper presents an optimization procedure which integrates lightning strike analysis into design reliable and economical composite wind turbine blades. A high-fidelity 5-MW composite wind turbine blade is applied into the lightning strike analysis and the optimization procedure under four different lightning severity levels. The lightning-strike-induced electric field along the wind turbine blade at the top vertical position is calculated using finite element analysis. The dielectric breakdown strength of the composite wind turbine blade is considered as a function of laminate thickness. The lightning safety ratio is then calculated as the ratio between the dielectric breakdown strength and the magnitude of the lightning-strike-induced electric field. Subjected to the lightning constraints and fatigue constraints, the optimization procedure minimizes the total composite material cost by fine-tuning the laminate thickness design variables of the blade model. Both the lightning strike analysis and the optimization results indicate that the blade tip is the most vulnerable region against lightning strike damage. The obtained optimum designs under the four lightning severity levels increase the lightning safety ratio by 36% – 45% and increase the fatigue life more than 15 times compared with the initial blade design.

Noise analysis of the wind turbine blade

2013 ◽  
Author(s):  
Gwochung Tsai ◽  
Yita Wang ◽  
Yuhchung Hu ◽  
Jaching Jiang
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Noise Analysis ◽  
Wind Turbine Blade

DYNAMIC ANALYSIS OF THE FLUID FLOW OVER A WIND TURBINE BLADE

2017 ◽  
Author(s):  
Aldemir Ap Cavalini Jr ◽  
João Marcelo Vedovoto ◽  
Renata Rocha
Keyword(s):  
Fluid Flow ◽  
Dynamic Analysis ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade
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