Gust response of aeroelastically tailored wind turbines

The Science of Making Torque from Wind

Scott, S.^1 ; Capuzzi, M.^1 ; Langston, D.^1 ; Bossanyi, E.^2 ; McCann, G.^2 ; Weaver, Pm^1 ; Pirrera, A.^1

Advanced Composites Centre for Innovation and Science (ACCIS), Department of Aerospace Engineering, University of Bristol, Queen's Building, University Walk

BS8 1TR, United Kingdom^1

DNV GL, One Linear Park, Avon Street, Bristol

BS2 0PS, United Kingdom^2

关键词: Aeroelastic tailoring;    Bend-twist coupling;    Blade configurations;    Coupling distribution;    Electrical power;    Enabling technologies;    Load alleviation;    Rotational speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/4/042006/pdf
DOI  :  10.1088/1742-6596/753/4/042006

来源: IOP

【 摘 要 】

Some interesting challenges arise from the drive to build larger, more durable rotors that produce cheaper energy. The rationale is that, with current wind turbine designs, the power generated is theoretically proportional to the square of blade length. One enabling technology is aeroelastic tailoring that offers enhanced combined energy capture and system durability. The design of two adaptive, aeroelastically tailored blade configurations is considered here. One uses material bend-twist coupling; the other combines both material and geometric coupling. Each structural design meets a predefined coupling distribution, whilst approximately matching the stiffness of an uncoupled baseline blade. A gust analysis shows beneficial flapwise load alleviation for both adaptive blades, with the additional benefits of smoothing variations in electrical power and rotational speed.