Individual Pitch Control for Load Mitigation
Authors
Oldenbürger, Randy Ken ; Jespersen, Stefan
Term
4. term
Education
Publication year
2017
Submitted on
2017-06-08
Pages
94
Abstract
The objective of this report is the development of an individual pitch controller to mitigate loads on a wind turbine. This includes the development of a non-linear mathematical model, containing structural and aerodynamic 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 aerodynamics the Blade Element Momentum Theory (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 developed 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
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