Prediction of optimum section pitch angle distribution along wind turbine blades

2013 ◽  
Vol 67 ◽  
pp. 342-350 ◽  
Author(s):  
A. Sharifi ◽  
M.R.H. Nobari
Keyword(s):  
Wind Turbine ◽  
Pitch Angle ◽  
Turbine Blades ◽  
Angle Distribution ◽  
Pitch Angle Distribution ◽  
Wind Turbine Blades

Computation of Hoisting Forces on Wind Turbine Blades Using Computation Fluid Dynamics

2013 ◽  
Vol 446-447 ◽  
pp. 452-457 ◽  
Author(s):  
Yong Wang ◽  
De Tian ◽  
Wei He
Keyword(s):  
Fluid Dynamics ◽  
Wind Turbine ◽  
Pitch Angle ◽  
Turbine Blades ◽  
Three Dimensional ◽  
Azimuth Angle ◽  
Wind Turbine Blades ◽  
Mesh Model ◽  
Cfd Method ◽  
Yaw Angle

The hoisting forces on a 38.5m wind turbine blade in multiple positions are computed using the computational fluid dynamics (CFD) method. The computation model is constructed with the steady wind conditions, blade mesh model and the blade positions which are determined by the blade pitch angle, azimuth angle and rotor yaw angle. The maximal and minimal hoisting forces in three-dimensional coordinates are found and the corresponding pitch angle, azimuth angle and yaw angle are obtained. The change of the hoisting forces on wind turbine blades is analyzed. Suggestions are given to decrease the hoisting forces of the blade in open wind environment.

scholarly journals Optimal control of pitch angle of large wind turbine based on speed differential

2020 ◽  
Vol 194 ◽  
pp. 03008
Author(s):  
Xin GAO ◽  
Xiaoyu WANG ◽  
Jiahuan HE
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Power Output ◽  
Pitch Angle ◽  
Turbine Blades ◽  
Energy Utilization ◽  
Feedback Signal ◽  
Wind Turbine Blades ◽  
Low Wind Speed ◽  
Turbine Speed

In order to improve the power output of wind turbine at low wind speed, this paper studies the aerodynamic performance of wind turbine blades at different installation angles. It is found that the optimal pitch angle of wind turbine can be switched between different installation angles when wind speed changes by introducing wind turbine speed differential feedback signal in PI controller of variable pitch, so as to track the optimal wind energy utilization coefficient The purpose of improving wind turbine power output. In order to verify the reliability of the analysis results, bladed is used to simulate the model of a 1.5MW unit with pitch differential control signal. At the same time, the research results are applied to the actual operation of the unit. The results show that the power curve of the wind turbine unit at low wind speed can be improved and the annual power generation can be increased by 1.24%.

Small Wind Turbine Design Verification by Computer Simulation

2017 ◽  
Vol 863 ◽  
pp. 235-240
Author(s):  
Chung Ming Tan ◽  
Mei Juan Lai
Keyword(s):  
Wind Turbine ◽  
Twist Angle ◽  
Turbine Blades ◽  
Flow Simulation ◽  
Angle Distribution ◽  
Blade Design ◽  
Wind Turbine Blades ◽  
Numerical Example ◽  
Physical Insight ◽  
Turbine Design

Rotor blade design relies heavily on the aerodynamic theory. Extensive calculations are necessary in order to determine the blade parameters such as chord and thickness distributions, twist angle distribution and taper that is matched with the selected airfoil sections. For practical purposes, the engineers need a convenient means to verify their design. Wind turbine blades must be designed to operate in desirable performance. This research proposes a computer aided method that helps the engineers to examine the design and amend it in time. The numerical example shows good applicability of the methodology proposed. The proposed methodology not only lets us verify our design scientifically but also makes us understand the associated physical insight. The numerical example demonstrated here showed the converted power by the rotor can be evaluated easily by Flow Simulation according to the aerodynamics theory.

Experiments of Wind Turbine Blades with Rocket Triggered Lightning

2009 ◽  
Vol 129 (5) ◽  
pp. 689-695
Author(s):  
Masayuki Minowa ◽  
Shinichi Sumi ◽  
Masayasu Minami ◽  
Kenji Horii
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Triggered Lightning

Folding of flexible hinges for aircraft wingtips and wind turbine blades

2021 ◽  
Author(s):  
Aileen G. Bowen Perez ◽  
Giovanni Zucco ◽  
Paul Weaver
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Wind Turbine Blades

Evaluation of the influence of wind speed and angle of attack on the aerodynamic effect of wind turbine blades

2017 ◽  
Author(s):  
Salete Alves ◽  
Luiz Guilherme Vieira Meira de Souza ◽  
Edália Azevedo de Faria ◽  
Maria Thereza dos Santos Silva ◽  
Ranaildo Silva
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Angle Of Attack ◽  
Wind Turbine Blades ◽  
Aerodynamic Effect
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