A study of stability of large wind turbine blades

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.