NDLI: Lidar-Assisted Feedforward Individual Pitch Control to Compensate Wind Shear and Yawed Inflow

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Lidar-Assisted Feedforward Individual Pitch Control to Compensate Wind Shear and Yawed Inflow

Content Provider	Scilit
Author	Wortmann, Svenja Geisler, Jens Konigorski, Ulrich
Copyright Year	2016
Description	Journal: Journal of Physics: Conference Series Lidar-assisted individual pitch control (IPC) has been investigated occasionally in recent years, focusing on the compensation of (vertical) wind shear as the main disturbance. Since yawed inflow might cause significant load fluctuations too, it is worth to compensate. Load patterns caused by yawed inflow significantly differ from those caused by wind shear, requiring a more sophisticated control algorithm. In this paper a lidar-assisted cyclic pitch feedforward control to compensate wind shear and yawed inflow is presented. The main objective is the analysis of the load patterns through a simplified aerodynamic model, which among other things focuses on a reasonable representation of the skewed wake effect. Establishing a suitable structure of the feedforward controller follows. The paper concludes with a comparison of fatigue load reductions achieved by three different controllers. Firstly, a well-known feedback individual pitch control; secondly, a feedforward controller for pure wind shear compensation and thirdly, this new feedforward controller to compensate wind shear and yawed inflow. The last two controllers use ideal lidar measurement chains.
Related Links	http://iopscience.iop.org/article/10.1088/1742-6596/753/5/052014/pdf
ISSN	17426588
e-ISSN	17426596
DOI	10.1088/1742-6596/753/5/052014
Journal	Journal of Physics: Conference Series
Volume Number	753
Language	English
Publisher	IOP Publishing
Publisher Date	2016-09-30
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics: Conference Series Marine Engineering Pitch Control Yawed Inflow Wind Shear Lidar Assisted Compensate Wind Individual Pitch Aerodynamic Model
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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