An Efficient Approach to Explore the Solution Space of a Wind Turbine Rotor Design Process

Pietro Bortolotti, Kristian Dixon, Evan Gaertner, Megan Rotondo, Garrett Barter

Research output: Contribution to journalArticlepeer-review

5 Scopus Citations


This study proposes a novel approach to explore the solution space of a wind turbine rotor design process. The goal is to offer to blade designers the possibility to select an optimal rotor for given market conditions, assessing trade-offs and alternatives in a matter of minutes. The design process consists of sequential aerodynamic-structural optimizations, where the two loops are linked via a blade-loading parameter that can be varied by the user. A design study is performed starting from the IEA Wind Task 37 land-based reference wind turbine. The solution space is characterized for rotor diameters in the range of 130-160 m, rated generator power values in the range of 3.0-6.0 MW, and tip-speed ratios in the range of 7.5-12.5. Results are discussed highlighting optimal design decisions and trade-offs.

Original languageAmerican English
Article numberArticle No. 042016
Number of pages11
JournalJournal of Physics: Conference Series
Issue number4
StatePublished - 22 Sep 2020
EventScience of Making Torque from Wind 2020, TORQUE 2020 - Virtual, Online, Netherlands
Duration: 28 Sep 20202 Oct 2020

Bibliographical note

Publisher Copyright:
© 2020 Published under licence by IOP Publishing Ltd.

NREL Publication Number

  • NREL/JA-5000-76303


  • blade design
  • MDAO
  • rotor design


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