Articles | Volume 10, issue 9
https://doi.org/10.5194/wes-10-2005-2025
Special issue:
https://doi.org/10.5194/wes-10-2005-2025
Research article
 | 
12 Sep 2025
Research article |  | 12 Sep 2025

Output-constrained individual pitch control methods using the multiblade coordinate transformation: trading off actuation effort and blade fatigue load reduction for wind turbines

Jesse I. S. Hummel, Jens Kober, and Sebastiaan P. Mulders

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Cited articles

Abbas, N., Zalkind, D., Mudafort, R., Hylander, G., Mulders, S., Heffernan, D., and Bortolotti, P.: NREL/ROSCO: ROSCO v2.9.0 (v2.9.0), Zenodo [code], https://doi.org/10.5281/ZENODO.10535404, 2024. a
Abbas, N. J., Zalkind, D. S., Pao, L., and Wright, A.: A reference open-source controller for fixed and floating offshore wind turbines, Wind Energ. Sci., 7, 53–73, https://doi.org/10.5194/wes-7-53-2022, 2022. a
Bir, G.: Multi-Blade Coordinate Transformation and Its Application to Wind Turbine Analysis, in: 46th AIAA Aerospace Sciences Meeting and Exhibit, American Institute of Aeronautics and Astronautics, Reno, Nevada, ISBN 978-1-62410-128-1, https://doi.org/10.2514/6.2008-1300, 2008. a, b, c, d
Bossanyi, E. A.: Individual Blade Pitch Control for Load Reduction, Wind Energy, 6, 119–128, https://doi.org/10.1002/we.76, 2003. a, b, c, d, e, f, g
Bossanyi, E. A.: Further Load Reductions with Individual Pitch Control, Wind Energy, 8, 481–485, https://doi.org/10.1002/we.166, 2005. a, b, c
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Short summary
The variation in wind speed over the rotor plane causes oscillations in the blade, leading to fatigue damage. These oscillations can be reduced with individual pitch control (IPC), at the expense of more blade actuation. This work proposes two output-constrained IPC methods to facilitate the trade-off between load reduction and actuation increase. Both methods can smoothly transition between conventional full IPC action and no IPC action.
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