Open AccessOn the structural topology of wind turbine blades
Author(s) -
Buckney Neil,
Green Steven,
Pirrera Alberto,
Weaver Paul M.
Publication year - 2013
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.1504
Subject(s) - turbine blade , turbine , offset (computer science) , wind power , trailing edge , sizing , topology optimization , spar , engineering , structural engineering , enhanced data rates for gsm evolution , topology (electrical circuits) , marine engineering , automotive engineering , mechanical engineering , computer science , electrical engineering , finite element method , art , telecommunications , visual arts , programming language
As wind turbines continue to grow in size, it becomes increasingly important to ensure that they are as structurally efficient as possible to ensure that wind energy can be a cost‐effective source of power generation. A way to achieve this is through weight reductions in the blades of the wind turbine. In this study, topology optimization is used to find alternative structural configurations for a 45 m blade from a 3 MW wind turbine. The result of the topology optimization is a layout that varies along the blade length, transitioning from a structure with trailing edge reinforcement to one with offset spar caps. Sizing optimization was then performed on a section with the trailing edge reinforcement and was shown to offer potential weight savings of 13.8% when compared with a more conventional design. These findings indicate that the conventional structural layout of a wind turbine blade is sub‐optimal under the static load conditions that were applied, suggesting an opportunity to reduce blade weight and cost. Copyright © 2012 John Wiley & Sons, Ltd.