A master thesis from Aalborg University
Individual Pitch Control for Load Mitigation
Author(s)
Term
4. term
Education
Publication year
2017
Submitted on
2017-06-08
Pages
94 pages
Abstract
The objective of this report is the develop- ment of an individual pitch controller to mit- igate loads on a wind turbine. This includes the development of a non-linear mathemat- ical model, containing structural and aero- dynamic properties. The structural model consists the fore-aft movement of the tower and the flap- and edgewise movement of the blades. For the modelling of the aerody- namics the Blade Element Momentum The- ory (BEMT) has been used and implemented. The non-linear model has been used to make a linearization, to develop a linear model for control purposes. Firstly, a collective PI controller has been de- veloped to maintain steady power output, whereafter an individual PI controller has been implemented to even out the loads on the rotor caused by shear wind. A successful MPC was not implemented due to time limitations.
Keywords
Documents
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