EFFICIENT WIND TURBINE BLADES, WIND TURBINE BLADE STRUCTURES, AND ASSOCIATED SYSTEMS AND METHODS OF MANUFACTURE, ASSEMBLY AND USE

摘要

Wind turbine systems and methods are disclosed herein. A representative system includes a wind turbine blade having an inner region that has an internal load-bearing truss structure, and an outer region that has an internal, non-truss, load-bearing structure. In particular embodiments, the truss structure can include a triangular arrangement of spars, and/or can include truss attachment members that connect components of the truss without the use of holes in the spars. Spars can be produced from a plurality of pultruded composite members laminated together in longitudinally extending portions. The longitudinally extending portions can be connected at joints that interleave projections and recesses of each of the spar portions. The blades can include fan-shaped transitions at a hub attachment portion, formed by laminated layers and/or a combination of laminated layers and transition plates.

主权项

1. A wind turbine system, comprising:
a wind turbine blade having a radially inner region and a radially outer region, wherein:
the inner region includes a hub attachment element, an internal load-bearing truss structure extending longitudinally outwardly from the hub attachment element, and an external skin carried by the internal truss structure; andthe outer region is positioned longitudinally outwardly from the internal truss structure, is attached to the internal truss structure, and has an internal load-bearing structure that does not include a load-bearing truss structure, the outer region further including a blade tip.