Tuning of Nacelle Feedback Gains for Floating Wind Turbine Controllers Using a Two-DOF Model

• DOI: 10.1115/omae2020-18770
• Publication Date: 2020-12-19T05:57:39Z
• Authors: Eben Lenfest; Andrew J. Goupee; Alan Wright; Nikhar Abbas
• Keywords: Nacelle

Abstract Designing a collective blade pitch controller for floating offshore wind turbines (FOWTs) poses unique challenges due to the interaction of with dynamics platform. The must also handle competing objectives power production performance and fatigue load management. Existing solutions either detune result slowed response, make use complicated tuning methods, or incorporate nacelle velocity feedback gain. With goal developing simple control method general FOWT researcher that is easily extensible wide array turbine hull configurations, this last idea built upon by proposing strategy This uses two degree-of-freedom (DoF) model considers tower-top fore-aft rotor angular displacements. For evaluation, term added an existing gain scheduled proportional-integral as proportional modified then compared baseline land-based detuned controllers on example system several cases. First-pass results are favorable, demonstrating how researchers can proposed efficiently schedule gains adequate they investigate new configurations.