RENEWABLE ENERGY | 卷:156 |
A gravo-aeroelastically scaled wind turbine rotor at field-prototype scale with strict structural requirements | |
Article | |
Yao, Shulong1  Griffith, D. Todd1  Chetan, Mayank1  Bay, Christopher J.2  Damiani, Rick2  Kaminski, Meghan3  Loth, Eric3  | |
[1] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75083 USA | |
[2] Natl Renewable Energy Lab, Natl Wind Technol Ctr, Golden, CO USA | |
[3] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA USA | |
关键词: Sub-scale testing; Field testing; Wind turbine rotor design; Structural safety requirements; | |
DOI : 10.1016/j.renene.2020.03.157 | |
来源: Elsevier | |
【 摘 要 】
A new sub-scale field-prototype design solution is developed to realize the dynamics, structural response, and distributed loads (gravitational, aerodynamic, centrifugal) that are characteristic of a full-scale large, modern wind turbine rotor. Prior work in sub-scale wind turbine testing has focused on matching aerodynamic/aero-elastic characteristics of full-scale rotors at wind tunnel scale. However, large-scale rotor designs must expand beyond this limited set of scaling parameters for cost-effective prototyping and meet strict requirements for structural safety for field testing. The challenge lies in producing a structural design meeting two competing objectives: novel scaling objectives that prescribe the sub-scale blade to have low mass and stiffness; and traditional structural safety objectives that drive the design to have higher stiffness and mass. A 20% gravo-aeroelastically scaled wind turbine blade is developed successfully that satisfies these competing objectives. First, it achieved close agreement for non-dimensional tip deflection and flap-wise blade frequency (both within 2.1%) with a blade mass distribution constrained to produce target gravitational and centrifugal loads. Second, the entire blade structure was optimized to ensure a safe, manufacturable solution meeting strict strength requirements for a testing site that can experience up to 45 m/s wind gusts. The prototype-scale blade was fabricated and successfully proof-load tested. (C) 2020 Elsevier Ltd. All rights reserved.
【 授权许可】
Free
【 预 览 】
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