Analysis of Dynamic Characteristics of 1.5 MW Wind Turbine Tower

2013 ◽  
Vol 313-314 ◽  
pp. 793-796
Author(s):  
Ping Ping Pan ◽  
Chang Zheng Chen ◽  
Shen Bo Yu ◽  
Qiang Meng
Keyword(s):  
Wind Turbine ◽  
Dynamic Characteristics ◽  
Work Load ◽  
Wind Load ◽  
Random Load ◽  
Wheel Load ◽  
Reliability Design ◽  
Rotating Blade ◽  
Wind Turbine Tower ◽  
Complicated Task

The wind turbine tower is to bear wind load and work load which is brought by the rotating blades during operation. Therefore, analysis of dynamic characteristics of wind turbine tower is a complicated task in the wind turbine reliability design. The dynamic characteristic of wind turbine tower plays an important role in its vibration control. This paper presents fluid-structure coupled dynamics equations accounting for the blade wheel load and wind load applying on the tower. By the model analysis, a feasible method for evaluating the dynamic characteristics of wind turbine tower under the wind turbine wind load and the rotating blade random load is obtained. The model is verified in the 1.5MW wind turbine.

The Finite Element Analysis and Comparison of Wind Turbine Tower under Static Wind Load and Fluctuating Wind Load

2013 ◽  
Vol 446-447 ◽  
pp. 733-737
Author(s):  
Chi Chen ◽  
Hao Yuan Chen ◽  
Tian Lu
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Wind Turbine ◽  
Modal Analysis ◽  
Large Scale ◽  
Wind Load ◽  
Element Analysis ◽  
Finite Element Software ◽  
Wind Turbine Tower ◽  
Fluctuating Wind

In this paper, a 1.5 MW wind turbine tower in Dali, Yunnan Province is used as the research object, using large-scale finite element software Ansys to carry on the dynamic analysis. These natural frequencies and natural vibration type of the first five of tower are obtained by modal analysis and are compared with natural frequency to determine whether the resonance occurs. Based on the modal analysis, the results of the transient dynamic analysis are obtained from the tower, which is loaded by the static wind load and fluctuating wind load in two different forms. By comparing the different results, it provides the basis for the dynamic design of wind turbine tower.

Finite Element Analysis for the Wind Resistance of the Tower of Wind Turbine

2011 ◽  
Vol 189-193 ◽  
pp. 1718-1721 ◽  
Author(s):  
Hua Wei ◽  
Yan Jun Cheng ◽  
Zhi Yuan Peng ◽  
Hai Jun Wang
Keyword(s):  
Wind Turbine ◽  
Steel Structure ◽  
Wind Load ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Constant Frequency ◽  
Wind Resistance ◽  
Wind Turbine Tower ◽  
Variable Speed Constant Frequency ◽  
Von Mises

1MW variable speed constant frequency wind turbine tower of steel structure is analyzed by using the software ANSYS, the coupling between the wind and the tower is realized through the order coupling method. The maximum Von Mises stress and the deformation of the tower in the case of limit loads are obtained, and then these results are compared with that without wind load. Comparison result shows that the effect of wind load on the tower’s displacement along the wind speed is great, and the maximum Von Mises stress of the tower becomes larger after considering the influence of wind load, the increase extent is determined by wind load case.

scholarly journals Wind Load Evaluation of Wind Turbine Tower Design

2020 ◽  
Vol 1622 ◽  
pp. 012071
Author(s):  
Enjun Wu ◽  
Hongjun Chen ◽  
Wenfeng Qu ◽  
Chong Huo ◽  
Zhengzhao Liang ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Wind Load ◽  
Wind Turbine Tower ◽  
Load Evaluation

Fatigue reliability analysis of wind turbine tower under random wind load

2020 ◽  
Vol 87 ◽  
pp. 101982 ◽  
Author(s):  
Bing Fu ◽  
Jianbin Zhao ◽  
Bingqing Li ◽  
Jing Yao ◽  
Armand Robinson Mouafo Teifouet ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Reliability Analysis ◽  
Wind Load ◽  
Fatigue Reliability ◽  
Wind Turbine Tower

A Circuit Model for Lightning Surge of Wind Turbine Tower with an Internal Conductor

2015 ◽  
Vol 135 (3) ◽  
pp. 200-206 ◽  
Author(s):  
Yoki Ikeda ◽  
Naoto Nagaoka ◽  
Yoshihiro Baba
Keyword(s):  
Wind Turbine ◽  
Circuit Model ◽  
Wind Turbine Tower

Seismic response analysis of steel–concrete hybrid wind turbine tower

2021 ◽  
pp. 107754632110075
Author(s):  
Junling Chen ◽  
Jinwei Li ◽  
Dawei Wang ◽  
Youquan Feng
Keyword(s):  
Wind Turbine ◽  
Response Spectrum ◽  
Ground Motions ◽  
Time History ◽  
Seismic Action ◽  
Response Spectrum Method ◽  
Spectrum Method ◽  
Wind Turbine Tower ◽  
Ground Types ◽  
Nonlinear Time History

The steel–concrete hybrid wind turbine tower is characterized by the concrete tubular segment at the lower part and the traditional steel tubular segment at the upper part. Because of the great change of mass and stiffness along the height of the tower at the connection of steel segment and concrete segment, its dynamic responses under seismic ground motions are significantly different from those of the traditional steel tubular wind turbine tower. Two detailed finite element models of a full steel tubular tower and a steel–concrete hybrid tower for 2.0 MW wind turbine built in the same wind farm are, respectively, developed by using the finite element software ABAQUS. The response spectrum method is applied to analyze the seismic action effects of these two towers under three different ground types. Three groups of ground motions corresponding to three ground types are used to analyze the dynamic response of the steel–concrete hybrid tower by the nonlinear time history method. The numerical results show that the seismic action effect by the response spectrum method is lower than those by the nonlinear time history method. And then it can be concluded that the response spectrum method is not suitable for calculating the seismic action effects of the steel–concrete hybrid tower directly and the time history analyses should be a necessary supplement for its seismic design. The first three modes have obvious contributions on the dynamic response of the steel–concrete hybrid tower.

scholarly journals Dynamic characteristics analysis of planetary gear system with internal and external excitation under turbulent wind load

2021 ◽  
Vol 104 (3) ◽  
pp. 003685042110356
Author(s):  
Hexu Yang ◽  
Xiaopeng Li ◽  
Jinchi Xu ◽  
Zemin Yang ◽  
Renzhen Chen
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Nonlinear Dynamic ◽  
Planetary Gear ◽  
Wind Load ◽  
Transmission System ◽  
Gear Transmission ◽  
Stiffness Ratio ◽  
Gear Transmission System ◽  
Planetary Gear System

According to the working characteristics of a 1.5 MW wind turbine planetary gear system under complex and random wind load, a two-parameter Weibull distribution model is used to describe the distribution of random wind speed, and the time-varying load caused by random wind speed is obtained. The nonlinear dynamic model of planetary gear transmission system is established by using the lumped parameter method, and the relative relations among various components are derived by using Lagrange method. Then, the relative relationship between the components is solved by Runge Kutta method. Considering the influence of random load and stiffness ratio on the planetary gear transmission system, the nonlinear dynamic response of cyclic load and random wind load on the transmission system is analyzed. The analysis results show that the variation of the stiffness ratio makes the planetary gear have abundant nonlinear dynamics behavior and the planetary gear can get rid of chaos and enter into stable periodic motion by changing the stiffness ratio properly on the premise of ensuring transmission efficiency. For the variable pitch wind turbine, the random change of external load increases the instability of the system.

Three-Dimensional and Rotational Aerodynamics on the NREL Phase VI Wind Turbine Blade

2008 ◽  
Vol 130 (3) ◽  
Author(s):  
Alvaro Gonzalez ◽  
Xabier Munduate
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Three Dimensional ◽  
Separated Flow ◽  
Leading Edge ◽  
Wind Turbine Blade ◽  
Trailing Edge ◽  
Rotating Blade ◽  
Nrel Phase Vi ◽  
Edge Separation

This work undertakes an aerodynamic analysis over the parked and the rotating NREL Phase VI wind turbine blade. The experimental sequences from NASA Ames wind tunnel selected for this study respond to the parked blade and the rotating configuration, both for the upwind, two-bladed wind turbine operating at nonyawed conditions. The objective is to bring some light into the nature of the flow field and especially the type of stall behavior observed when 2D aerofoil steady measurements are compared to the parked blade and the latter to the rotating one. From averaged pressure coefficients together with their standard deviation values, trailing and leading edge separated flow regions have been found, with the limitations of the repeatability of the flow encountered on the blade. Results for the parked blade show the progressive delay from tip to root of the trailing edge separation process, with respect to the 2D profile, and also reveal a local region of leading edge separated flow or bubble at the inner, 30% and 47% of the blade. For the rotating blade, results at inboard 30% and 47% stations show a dramatic suppression of the trailing edge separation, and the development of a leading edge separation structure connected with the extra lift.

Sign in / Sign up

Export Citation Format

Share Document