Experimental investigation of the cyclic pitch control on a horizontal axis wind turbine in diagonal inflow wind condition

Energy ◽  
2017 ◽  
Vol 134 ◽  
pp. 269-278 ◽  
Author(s):  
Le Quang Sang ◽  
Maeda Takao ◽  
Yasunari Kamada ◽  
Qing'an Li
Keyword(s):  
Experimental Investigation ◽  
Wind Turbine ◽  
Horizontal Axis ◽  
Wind Condition ◽  
Horizontal Axis Wind Turbine ◽  
Pitch Control

A comparative numerical study of four turbulence models for the prediction of horizontal axis wind turbine flow

2010 ◽  
Vol 224 (9) ◽  
pp. 1973-1979 ◽  
Author(s):  
N S Tachos ◽  
A E Filios ◽  
D P Margaris
Keyword(s):  
Wind Turbine ◽  
Turbulence Model ◽  
Numerical Study ◽  
Free Field ◽  
Turbulence Models ◽  
Horizontal Axis ◽  
Wind Condition ◽  
Computational Domain ◽  
Horizontal Axis Wind Turbine ◽  
Rans Equations

The analysis of the near and far flow fields of an experimental National Renewable Energy Laboratory (NREL) rotor, which has been used as the reference rotor for the Viscous and Aeroelastic Effects on Wind Turbine Blades (VISCEL) research program of the European Union, is described. The horizontal axis wind turbine (HAWT) flow is obtained by solving the steady-state Reynolds-averaged Navier—Stokes (RANS) equations, which are combined with one of four turbulence models (Spalart—Allmaras, k—∊, k—∊ renormalization group, and k—ω shear stress transport (SST)) aiming at validation of these models through a comparison of the predictions and the free field experimental measurements for the selected rotor. The computational domain is composed of 4.2×106 cells merged in a structured way, taking care of refinement of the grid near the rotor blade in order to enclose the boundary layer approach. The constant wind condition 7.2 m/s, which is the velocity of the selected experimental data, is considered in all calculations, and only the turbulence model is altered. It is confirmed that it is possible to analyse a HAWT rotor flow field with the RANS equations and that there is good agreement with experimental results, especially when they are combined with the k—ω SST turbulence model.

scholarly journals The Design and Analysis of Passive Pitch Control for Horizontal Axis Wind Turbine

2014 ◽  
Vol 61 ◽  
pp. 683-686
Author(s):  
Yu-Jen Chen ◽  
Yi-Feng Tsai ◽  
Chang-Chi Huang ◽  
Meng-Hsien Li ◽  
Fei-Bin Hsiao
Keyword(s):  
Wind Turbine ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine ◽  
Pitch Control

Experimental investigation of the root flow in a horizontal axis wind turbine

Wind Energy ◽  
2013 ◽  
Vol 17 (7) ◽  
pp. 1093-1109 ◽  
Author(s):  
B. Akay ◽  
D. Ragni ◽  
C.J. Simão Ferreira ◽  
G.J.W. van Bussel
Keyword(s):  
Experimental Investigation ◽  
Wind Turbine ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine

D211 Experimental Study on Horizontal Axis Wind Turbine Generation System under Real Wind Condition System

2011 ◽  
Vol 2011.16 (0) ◽  
pp. 359-362
Author(s):  
Toshiyuki ASO ◽  
Katsuya IIDA ◽  
Tomoyuki AIDA ◽  
Akihiro UNNO ◽  
Yuuki HAYASHI ◽  
...  
Keyword(s):  
Experimental Study ◽  
Wind Turbine ◽  
Horizontal Axis ◽  
Wind Condition ◽  
Generation System ◽  
Horizontal Axis Wind Turbine

scholarly journals Experimental investigation of load fluctuation on horizontal axis wind turbine for extreme wind direction change

2017 ◽  
Vol 12 (1) ◽  
pp. JFST0005-JFST0005 ◽  
Author(s):  
Le Quang SANG ◽  
Junsuke MURATA ◽  
Masahiro MORIMOTO ◽  
Yasunari KAMADA ◽  
Takao MAEDA ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Wind Turbine ◽  
Wind Direction ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine ◽  
Direction Change ◽  
Load Fluctuation ◽  
Extreme Wind

scholarly journals Study effect of extreme wind direction change on 3-bladed horizontal axis wind turbine

2019 ◽  
Vol 8 (3) ◽  
pp. 261-266
Author(s):  
Le Quang Sang ◽  
Takao Maeda ◽  
Yasunari Kamada
Keyword(s):  
Wind Turbine ◽  
Wind Direction ◽  
Horizontal Axis ◽  
International Electrotechnical Commission ◽  
Wind Condition ◽  
Wind Regime ◽  
Horizontal Axis Wind Turbine ◽  
Direction Change ◽  
Extreme Wind ◽  
Pitch Moment

The Horizontal Axis Wind Turbines (HAWT) are used very popular in the world. They were installed mainly on land. However, on the land, the wind regime change is very complex such as high turbulence and constantly changing wind direction. In the International Electrotechnical Commission (IEC) 61400-1 standard, the wind regime is devided into the normal wind conditions and the extreme wind conditions. This study will focus on the extreme wind direction change and estimate the aerodynamic forces acting on a 3-bladed HAWT under this condition. Because the extreme wind direction change may cause extreme loads and it will affect the lifetime of HAWTs. This issue is experimented in the wind tunnel in Mie University, Japan to understand these effects. The wind turbine model is the 3-bladed HAWT type and using Avistar airfoil for making blades. A 6-component balance is used to measure the forces and the moments acting on the entire wind turbine in the three directions of x, y and z-axes. This study estimates the load fluctuation of the 3-bladed wind turbine under extreme wind direction change. The results show that the yaw moment and the pitch moment under the extreme wind direction change fluctuate larger than the normal wind condition. Specifically, before the sudden wind direction change happened, the averaged maximum pitch moment MX is -1.78 Nm, and after that MX is 4.45 Nm at inrush azimuth of 0°.©2019. CBIORE-IJRED. All rights reserved

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