Structural Design of Multi-Megawatt Wind Turbine Blade by Classical Lamination Theory

Abstract

This research presents a method for the initial structural design of a multi-megawatt wind turbine blade. The structural data for a 2-MW blade were applied as the blade structural characteristic data of the reference blade. Tenkinds of blade models were newly designed by replacing the spar cap axial GRRP with a GFRP and CFRP These terms should be defined. at different orientations. The axial stiffness coefficients of the newly designed models were made equal to the coefficient of the reference blade. The required numbers of layers in each section of bladeswere calculated, and the lay-up designs were based on these numbers. Verification results showed that the design method that used the structural data of the reference blade was appropriate for the initial structural design of a wind turbine blade.

Uniform Decomposition and Positive-Gradient Differential Evolution for Multi-Objective Design of Wind Turbine Blade

“…In optimization, when the aerodynamic shape and structural layer of a blade, where the variables involved include the chord, twist, relative thickness, absolute thicknesses, spar cap, and trailing-edge reinforced layer, are determined, the laminate theory [34] is used to estimate the mass per unit spanwise length at every blade section.…”