Control of Periodically Waked Wind Turbines

Journal Article (2025)
Author(s)

A.A.W. van Vondelen (TU Delft - Team Jan-Willem van Wingerden)

Atindriyo Kusumo Pamososuryo (TU Delft - Team Jan-Willem van Wingerden)

Sachin T. Navalkar (Siemens Gamesa Renewable Energy, TU Delft - Team Jan-Willem van Wingerden)

J. W. van Wingerden (TU Delft - Team Jan-Willem van Wingerden)

Research Group
Team Jan-Willem van Wingerden
DOI related publication
https://doi.org/10.1109/TCST.2024.3508577
More Info
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Publication Year
2025
Language
English
Research Group
Team Jan-Willem van Wingerden
Issue number
2
Volume number
33
Pages (from-to)
700-713
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Abstract

Periodic wakes are created on upstream wind turbines by pitching strategies, such as the Helix approach, to enhance wake mixing and thereby increase power production for wind turbines directly in their wake. Consequently, a cyclic load is not only generated on the actuating turbine’s blades but also on the waked wind turbine. While the upstream load is the result of the pitching required for wake mixing, the downstream load originates from interaction with the periodic wake and only causes fatigue damage. This study proposes two novel individual pitch control schemes in which such a periodic load on the downstream turbine can be treated: by attenuation or amplification. The former method improves the fatigue life of the downstream turbine, whereas the latter enhances wake mixing further downstream by exploiting the already-present periodic content in the wake; both were validated on a three-turbine wind farm in high-fidelity large-eddy simulations. Fatigue damage reductions of around 10% were found in the load mitigation case, while an additional power enhancement of 6% was generated on the third turbine when implementing the amplification strategy. Both objectives can easily be toggled depending on a wind farm operator’s demands and the desired loads/energy capture tradeoff.