Structural design and optimization of a series of 13.2 MW downwind rotors

2021 ◽  
pp. 0309524X2098416
Author(s):  
Shulong Yao ◽  
Mayank Chetan ◽  
D Todd Griffith
Keyword(s):  
Comparative Analysis ◽  
Wind Turbine ◽  
Design Optimization ◽  
Structural Design ◽  
Structural Performance ◽  
Mass Reduction ◽  
Design And Optimization ◽  
Significant Growth ◽  
Design Requirements ◽  
Rotor Mass

The quest for reduced LCOE has driven significant growth in wind turbine size. A key question to enable larger rotor designs is how to configure and optimize structural designs to constrain blade mass and cost while satisfying a growing set of challenging structural design requirements. In this paper, we investigate the performance of a series of three two-bladed downwind rotors with different blade lengths (104.3-m, 122.9-m, and 143.4-m) all rated at 13.2 MW. The primary goals are to achieve 25% rotor mass and 25% LCOE reduction. A comparative analysis of the structural performance and economics of this family rotors is presented. To further explore optimization opportunities for large rotors, we present new results in a root and spar cap design optimization. In summary, we present structural design solutions that achieve 25% rotor mass reduction in a SUMR13i design (104.3-m) and 25% LCOE reduction in a SUMR13C design (143.4-m).

Aero-structural design and optimization of 50 MW wind turbine with over 250-m blades

2021 ◽  
pp. 0309524X2110273
Author(s):  
Shulong Yao ◽  
Mayank Chetan ◽  
D Todd Griffith ◽  
Alejandra S Escalera Mendoza ◽  
Michael S Selig ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Structural Design ◽  
Cost Reduction ◽  
Structural Performance ◽  
Mass Reduction ◽  
Baseline Design ◽  
Design And Optimization ◽  
Rotor Design ◽  
Cost Of Energy ◽  
Extreme Scale

The quest for reduced levelized cost of energy has driven significant growth in wind turbine size; however, larger rotors face significant technical and logistical challenges. The largest published rotor design is 25 MW, and here we consider an even larger 50 MW design with blade length over 250 m. This paper shows that a 50 MW design is indeed possible from a detailed engineering perspective and presents a series of aero-structural blade designs, and critical assessment of technology pathways and challenges for extreme-scale rotors. The 50 MW rotor design begins with Monte Carlo simulations focused on optimizing carbon spar cap and root design. A baseline design resulted in a 250-m blade with mass of 502 tonnes. Subsequently, an aero-structural design and optimization were performed to reduce the blade mass/cost with more than 25% mass reduction and 30% cost reduction by determining optimal blade chord and airfoil thickness for best aero-structural performance.

Aero-structural design and optimization of a small wind turbine blade

2016 ◽  
Vol 87 ◽  
pp. 837-848 ◽  
Author(s):  
Abolfazl Pourrajabian ◽  
Peyman Amir Nazmi Afshar ◽  
Mehdi Ahmadizadeh ◽  
David Wood
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Structural Design ◽  
Wind Turbine Blade ◽  
Design And Optimization ◽  
Small Wind Turbine

Design and Optimization of Vertical Axis Wind Turbine

2012 ◽  
Vol 150 ◽  
pp. 148-153
Author(s):  
Yang Cao ◽  
Xiao Ning Li ◽  
Guo Qing Wu ◽  
Xing Hua Chen ◽  
Xiao Yan Tian
Keyword(s):  
Wind Turbine ◽  
Wind Power ◽  
Structural Design ◽  
Vertical Axis ◽  
Analysis Method ◽  
Vertical Axis Wind Turbine ◽  
Element Analysis ◽  
Design And Optimization ◽  
Crucial Component ◽  
Extreme Wind

Wind power is a clean and renewable energy, and more and more countries in the world attach great importance to it and promote the development of the wind power industry. The current situation of wind turbines at home and abroad, the development, types, and characteristics were analyzed. The structural design of vertical axis wind turbine (VAWT) and aerodynamic theory of rotor blade were briefly introduced, the characteristic parameters in VAWT design were presented in this paper. Using finite element analysis method, the spindle which is the crucial component of VAWT under the extreme wind load was analyzed, and the corresponding results were obtained. Finally the wall thickness and the structure of spindle were improved and optimized to satisfy the engineering requirements of spindle.

FROSTLINE

Alloy Digest ◽  
1977 ◽  
Vol 26 (3) ◽  
Keyword(s):  
Structural Design ◽  
Heat Treating ◽  
Carbon Steels ◽  
Carbon Equivalent ◽  
Low Carbon ◽  
Steel Company ◽  
Cold Temperatures ◽  
Fine Grain ◽  
Design Requirements ◽  
Treated Carbon

Abstract FROSTLINE is a fine-grain, columbium-treated carbon steel designed to be an economical solution to structural design requirements at cold temperatures. Available in plate thicknesses up to 6 inches, it offers high levels of toughness at temperatures to 80 F and higher strength levels than conventional carbon steels. Frostline also offers excellent welding characteristics, because of its low carbon equivalent. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: CS-67. Producer or source: Lukens Steel Company.

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