A novel adaptive blade concept for large-scale wind turbines. Part II: Structural design and power performance

M. Capuzzi*, A. Pirrera, P. M. Weaver

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

18 Citations (Scopus)

Abstract

This two-part body of work considers wind turbines that increase annual energy production on account of an enhanced aeroelastic behaviour. In Part I, an aerodynamic analysis was performed to identify the theoretically ideal aeroelastic response of a reference blade. By so doing, the distributions of twist that maximise the power yielded at different wind speeds were obtained. Then, noting that the total twist is the sum of pre-twist, elastically-induced twist and pitch angle, a distribution of elastic twist was identified, that adaptively varies the blade's total twist to align with the ideal aeroelastic response, while also providing gust load alleviation capability. In Part II, the required elastically-induced twist is analysed from a structural point of view and adapted accordingly. In addition, a blade concept that realises the desired adaptive behaviour is proposed and the increase of power harvested is assessed by a provisional structural design.

Original languageEnglish
Pages (from-to)25-32
Number of pages8
JournalEnergy
Volume73
DOIs
Publication statusPublished - 14 Aug 2014

Keywords

  • Aeroelastic tailoring
  • Tow steered laminates
  • Wind turbine blade design
  • Yielded power maximisation

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