Wind Energy Science
Wind Energy Science
WES
Articles | Volume 11, issue 2
Articles | Volume 11, issue 2
https://doi.org/10.5194/wes-11-469-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-11-469-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 2
Research article
 | 
12 Feb 2026
Research article |  | 12 Feb 2026

Experimental investigation of wind turbine controllers for the Hybrid-Lambda Rotor

Daniel Ribnitzky, Vlaho Petrović, and Martin Kühn

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Short summary
We developed controllers for the Hybrid-Lambda Rotor, which enables two operating modes below rated power via different tip speed ratios, balancing load reduction and power output. A baseline controller with a model-based wind speed estimator, a load feedback controller and an inflow feed-forward controller were implemented on the MoWiTO 1.8 model turbine and tested in wind tunnel experiments. In depth scaling, considerations ensure the transferability of the results to the full-scale model.
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