Optimization Method of a Wind Turbine Blade Based on Proper Generalized Decomposition

Wind turbine blade is an important component to capture wind energy and converse energy. Basing on Wilson optimization method and engineering pratice, 2MW wind turbine blade’s aerodynamic profile is designed. Meanwhile, in order to avoid the resonance damage, top 10 rank modal frequencies and displacement gradient distribution contours are obtained through modal analysis. The results show that blade’s natural frequency does not coincide with the external excitation frequency, which avoids the resonance damage. Blade’s major vibration forms are waving and shimmy, requiring the ability of excellent resisting torsion. Therefore, the design should enhance bending stiffness of the blade. This paper provides an effective method for large wind turbine blades’ design and optimization.

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Composite Wind Turbine Blade Aerodynamic and Structural Integrated Design Optimization Based on RBF Meta-Model

Materials Science Forum ◽

10.4028/www.scientific.net/msf.813.10 ◽

2015 ◽

Vol 813 ◽

pp. 10-18 ◽

Cited By ~ 1

Author(s):

Yong Zhi Wang ◽

Feng Li ◽

Xu Zhang ◽

Wei Min Zhang

Keyword(s):

Finite Element ◽

Structural Analysis ◽

Wind Turbine ◽

Design Optimization ◽

Turbine Blade ◽

Computational Cost ◽

Integrated Design ◽

Optimization Method ◽

Wind Turbine Blade ◽

Meta Model

An aerodynamic and structural integrated design optimization method of composite wind turbine blade based on multidisciplinary design optimization (MDO) is presented. The optimization aims to reduce the mass of blade under some constraints, including the power and deflection at the rated wind speed, and the strength and deflection under ultimate case. The design variables include parameters both in aerodynamic and structural disciplines. In order to keep the shape of blade smooth,the chord and twist distributions are controlled by the Bezier function in the optimization process. 3D parameterization of blade was carried out in Finite Element Analysis (FEA) software. Considering tip-loss and hub-loss, aerodynamic analysis was performed by using Blade Element Momentum (BEM) theory. Finite Element Method (FEM) was used in structural analysis. Multi-island Genetic Algorithm (MIGA) which has excellent exploration abilities was used to optimize wind turbine blade. RBF meta-model was construct to approximate the accurate structural analysis model by Optimal Latin Hypercube DOE sample points. An example was given to verify the method in this paper. The result shows that the optimization method has good optimization efficiency and the RBF meta-model could reduce the computational cost a lot.

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Aerodynamic and structural optimization of wind turbine blade with static aeroelastic effects

International Journal of Low-Carbon Technologies ◽

10.1093/ijlct/ctz057 ◽

2019 ◽

Vol 15 (1) ◽

pp. 55-64

Author(s):

Jie Zhu ◽

Xiaohui Ni ◽

Xiaomei Shen

Keyword(s):

Structural Optimization ◽

Wind Turbine ◽

Turbine Blade ◽

Optimization Method ◽

Wind Turbine Blade ◽

Analysis Model ◽

Element Analysis ◽

Design Variables ◽

Aeroelastic Analysis ◽

Static Aeroelasticity

Abstract With the increasing size of wind turbine blade, the aeroelastic analysis becomes an essential step in the blade design process. The scope of this paper is to investigate the static aeroelastic effects between the fluid–structure interaction and improve the blade performances. First, the rigid and flexible blades are used to analyze the effects of static aeroelasticity on the blade aerodynamic and structural performances through a blade element momentum model coupled with 3D finite element analysis model. Based on this, a multi-objective aerodynamic and structural optimization method is proposed aiming at increasing the annual energy production and reducing blade mass, key parameters of the blade are employed as design variables, and various design requirements including strain, deflection, vibration and buckling limits are considered as constraints. Finally, a commercial 1.5 MW wind turbine blade is applied as a case study, and the optimization results show great improvements for the aerodynamic and structural performances of the blade.

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Optimization Method for Girder of Wind Turbine Blade

Mathematical Problems in Engineering ◽

10.1155/2014/898736 ◽

2014 ◽

Vol 2014 ◽

pp. 1-5 ◽

Cited By ~ 4

Author(s):

Yuqiao Zheng ◽

Rongzhen Zhao ◽

Hong Liu

Keyword(s):

Wind Turbine ◽

Turbine Blade ◽

Location Parameter ◽

Optimization Method ◽

Wind Turbine Blade ◽

Multidisciplinary Optimization ◽

Atmospheric Conditions ◽

Trailing Edge ◽

Structural Layout ◽

Main Girder

This paper presents a recently developed numerical multidisciplinary optimization method for design of wind turbine blade. The objective was the highest possible blade weight under specified atmospheric conditions, determined by the design giving girder layer and location parameter. Wind turbine blade on box-section beams girder is calculated by ply thickness, main girder and trailing edge. In this study, a realistic 30 m blade from a 1.2 MW wind turbine model of blade girder parameters is established. The optimization evolves a structure which transforms along the length of the blade, changing from a design with spar caps at the maximum thickness and a trailing edge mass to a design with spar caps toward the tip. In addition, the cross-section structural properties and the modal characteristics of a 62 m rotor blade were predicted by the developed beam finite element. In summary, these findings indicate that the conventional structural layout of a wind turbine blade is suboptimal under the static load conditions, suggesting an opportunity to reduce blade weight and cost.

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