General Structure Configuration and Parametric Design Method of Wind Turbine Tower

2012 ◽  
Vol 487 ◽  
pp. 588-592
Author(s):  
Zhen Yun Duan ◽  
Xiao Jiao Liu ◽  
Tie Qiang Ma
Keyword(s):  
Wind Turbine ◽  
Parametric Design ◽  
Design Method ◽  
General Structure ◽  
3D Design ◽  
Wind Turbine Tower ◽  
Relation Model ◽  
Tower Model ◽  
Structure Configuration ◽  
Parameter Relation

In order to improve the design efficiency of wind turbine tower, a design method which combines configuration and parametric design is proposed, the general structure model of wind turbine tower is given, and the parameter relation model of tower components is established. Based on skeleton and coordinate system coincident method, the automatic assembly of 3D tower model is realized. An automated 3D design software system of wind turbine tower is built by the API of Pro/E. The validity of the system is proved by wind turbine SUT-1500.

Identification of Modal Damping Ratios for a Simplified Wind Turbine Tower Using Fourier Analysis

2005 ◽  
Author(s):  
Paul J. Murtagh ◽  
Biswajit Basu ◽  
Brian M. Broderick
Keyword(s):  
Linear Regression ◽  
Fourier Analysis ◽  
Wind Turbine ◽  
Order Reduction ◽  
Coupled System ◽  
Degree Of Freedom ◽  
Modal Damping ◽  
Wind Turbine Tower ◽  
Tower Model ◽  
Forced Vibration Analysis

This paper presents an approach to evaluate the modal damping ratios for a simplified wind turbine tower, using Fourier analysis and linear regression. The model proposed for the wind turbine tower is composed of a flexible tower and rotor blade system, inter-connected using a sub-structuring technique, which facilitates the rotating blade/tower coupling. A model order reduction technique is first used to model each of the two sub-structures (tower/nacelle and rotor system) as single degree-of-freedom systems. The free vibration characteristics of the tower include the effects of a large nacelle mass at the towers free end, and the corresponding properties of the rotating blades include the effects of centrifugal stiffening and axial self-weight, due to rotation. Then, the two reduced order sub systems are then coupled together to form an equivalent two degree-of-freedom coupled tower/blade wind turbine tower model. A wind-induced forced vibration analysis of the coupled tower/blades model is carried out using artificially generated wind drag time-histories obtained as discrete Fourier transform representations of wind drag power spectral density functions. From this analysis, a method is proposed, based on Fourier analysis and the linear regression, to solve the inverse problem for evaluating the first and second modal damping ratios of the coupled system. A numerical example is presented in order to demonstrate the applicability of the proposed approach, where excellent agreement was observed between the originally specified modal damping ratios and the subsequently estimated ones. The proposed method can be extended to obtain the equivalent damping of the system with soil interaction and including aerodynamic damping.

Decision-Based Design Method for Computing Marginal Cost of Durability

2020 ◽  
Author(s):  
Felipe M. Pasquali ◽  
Jonatan Meza ◽  
John F. Hall
Keyword(s):  
Wind Turbine ◽  
Marginal Cost ◽  
Business Models ◽  
Formal Method ◽  
Design Method ◽  
New Paradigm ◽  
Wind Turbine Tower ◽  
The Cost ◽  
Decision Based Design ◽  
Product Durability

Abstract Product durability impacts both the environment and the economy. Companies are changing their business models to the circular economy. In this model, the ownership of the product remains with the manufacturer. With this new paradigm, determining the life of the product becomes even more important for the success of the business model. The metric defined as the Marginal Cost of Durability (MCD) determines the cost to increase or decrease the life of the system. For a system to last longer, more materials are needed to counteract the fatigue damage. While this metric has been defined and used in studies throughout the literature, there is a need for a formal method of collecting this data. This paper presents a novel method for measuring the MCD aided by Metamodel-Based Optimization. A case study is presented to demonstrate this method when applied to a wind turbine tower. The results indicate that there is an increasing linear relationship between life and cost. A wind turbine tower designed for 80 years has 34% more mass and cost than a 20-year design.

Modal Analysis of the 1.5MW Wind Turbine Tower

2013 ◽  
Vol 712-715 ◽  
pp. 1494-1500
Author(s):  
Bi Feng Cao ◽  
Hui Yu
Keyword(s):  
Finite Element ◽  
Wind Turbine ◽  
Modal Analysis ◽  
Natural Frequency ◽  
Excitation Frequency ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine ◽  
Finite Element Software ◽  
Wind Turbine Tower ◽  
Tower Model

The paper uses the finite element software ANSYS to establish a 1.5 MW horizontal-axis wind turbine tower model as an example and works on the modal analysis. The modal analysis takes into account the totalmass of wind rotor and nacelle and assumes the bottom of the wind turbine tower is fully constrained. The result shows that the natural frequency of the 1.5MW wind turbine tower is not coincident with the excitation frequency of the wind turbine, and the wind turbine can operate stably at the design condition.

Automatic Design Method of Wind Turbine Tower and it’s Application

2010 ◽  
Vol 139-141 ◽  
pp. 1277-1280
Author(s):  
Dong Hai Su ◽  
Mei Yan Zhang ◽  
Tie Qiang Ma ◽  
Xiao Qiu Han ◽  
Chuan Zong Sun ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Design Method ◽  
Engineering Application ◽  
Design System ◽  
Automatic Design ◽  
Design Efficiency ◽  
Cycle Times ◽  
Wind Turbine Tower ◽  
System Effectiveness ◽  
Parameters Calculation

In order to solve the engineering application problems of parametric rapidly in design of wind turbine tower, an automatic design method of wind turbine tower is put forward first, and the automatic design model was built through analyzing the key parameters and parameters’ calculation relation in different cases: same taper tower design and variable taper tower design. The key parameters, height, diameter and wall thickness of the tower, are mainly considered. Then, an automatic design system of the wind turbine tower is developed and realized according to the model. Finally, the system effectiveness is verified through taking a wind turbine for example. The results show that the system can enhance the design efficiency and shorten the cycle times at the same time.

Structure Optimum Design Based on Maintenance and Lifting Equipment for Wind Turbine

2014 ◽  
Vol 684 ◽  
pp. 273-278 ◽  
Author(s):  
Jia Sun ◽  
Ke Zhang ◽  
Yu Hou Wu
Keyword(s):  
Wind Turbine ◽  
Design Method ◽  
The Self ◽  
Main Design ◽  
Advantages And Disadvantages ◽  
Mechanics Model ◽  
Wind Turbine Tower ◽  
Solid Works ◽  
The Cost ◽  
Lifting Equipment

To meet the urgent demand of maintenance and lifting equipment for wind turbine, combined with designation demand, two kinds of primary structure of the maintenance and lifting equipment has been proposed, analyzed and compared. By means of the Solid Works software the initial design on the two kind of the machine, the self-climbing crane and the trailed hoisting platform, have been conducted, the static analysis has been performed based on the mechanics model, and the advantages and disadvantages of these methods have been pointed out and compared in the paper. Compared with the self-climbing crane, the mechanical structure of the trailed hoisting platform is simpler, the control system presented more reliable, simple, easier realized etc, and the cost is lower. The self-climbing crane is high-automatic, but the design of crane high in the free degree and high in difficulty, and the climbing force focused on the wind turbine tower is too large. Conclusion The trailed hoisting platform is determined as the main design method to design the maintenance and lifting equipment for wind turbine.

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