Title :
A study of stability of large wind turbine blades
Author :
Zhu, Youfeng ; Ren, Yongsheng
Author_Institution :
Shandong Univ. of Sci. & Technol., Qingdao, China
Abstract :
The paper extends Hodger-Dowell´s partial differential equations of blade motion, by building a new blade model of large horizontal axis turbines including the effects from gravity, pitch action, pre-twist and rotor speed. New equations also build an aerodynamic model using analysis of properties of air density, blade thickness and wind speed. All partial differential equations are approximated by a second-order finite difference approximation and used to simulate the stability of blade by varying parameters.
Keywords :
aerodynamics; blades; finite difference methods; mechanical stability; partial differential equations; wind turbines; Hodger-Dowell partial differential equations; aerodynamic model; blade motion; blade thickness; second order finite difference approximation; stability; wind speed; wind turbine blades; Blades; Boundary conditions; Eigenvalues and eigenfunctions; Equations; Mathematical model; Rotors; Stability analysis; blade; horizontal axis; stability;
Conference_Titel :
World Non-Grid-Connected Wind Power and Energy Conference (WNWEC), 2010
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-8920-6
Electronic_ISBN :
978-1-4244-8921-3
DOI :
10.1109/WNWEC.2010.5673201
