Enhanced wake mixing in wind farms using the Helix approach: A loads sensitivity study

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The Helix approach is a control technology that reduces the wake effect in wind farms by accelerating wake mixing through individual pitch control, resulting in significant AEP gain. However, this study found that depending on its settings, the controller may increase pitch bearing damage and loads on some turbine components. Using a modified version of NREL’s Reference OpenSource Controller in OpenFAST, this study analysed the sensitivity of loads and pitch bearing damage to different Helix controller settings on the IEA-15MW reference offshore wind turbine. Results showed that loads increased with the excitation signal amplitude but were less affected by its frequency. Additionally, more pitch bearing damage was observed in the counterclockwise Helix direction, while slightly higher loads were observed in the clockwise direction when using the same excitation signal amplitude and frequency for both directions.
Original languageEnglish
Title of host publicationProceedings 2023 American Control Conference (ACC)
ISBN (Print)979-8-3503-2806-6
Publication statusPublished - 2023
EventAmerican Control Conference, ACC 2023 - San Diego, United States
Duration: 31 May 20232 Jun 2023


ConferenceAmerican Control Conference, ACC 2023
Country/TerritoryUnited States
CitySan Diego

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


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