Swept Blade Dynamic Investigations for a 100 kW Small Wind Turbine

Most small–medium-sized turbine studies have focused on presenting new design methods and corresponding performance improvements rather than detailed dynamic investigations. This paper presents comprehensive investigations of a straight swept-back blade for 100 kW by performing modal analysis, load flutter analysis. The considered cases include steady wind operational conditions under normal extreme turbulence. Modal results show that although both blades similar natural frequencies, their mode shapes are quite different due to the couplings in flapwise-torsion directions introduced back-swept geometry. coupling alters aeroelastic response blade, which loads conditions. analysis damage equivalent fatigue swept much lower (up 29% flapwise bending moment 31% edgewise moment) blade. For ultimate loads, root is almost 50% while blades. Moreover, no instability near conditions, limit