Conference paper
Predictive control design on an embedded robust output-feedback compensator for wind turbine blade-pitch preview control
The use of upstream wind measurements has motivated the development of blade-pitch preview controllers to improve rotor speed tracking and structural load reduction beyond that achievable via conventional feedback design. Such preview controllers, typically based upon model predictive control (MPC) for its constraint handling properties, alter the closed-loop dynamics of the existing blade-pitch feedback control system.
This can result in the robustness properties of the original closed-loop system being no longer preserved. As a consequence, the aim of this work is to formulate a MPC layer on top of a given output-feedback controller, with a view to retaining the closed-loop robustness and frequency-domain performance of the latter.
The separate nature of the proposed controller structure enables clear and transparent qualifications of the benefits gained by using preview and predictive control. This is illustrated by results obtained from closed-loop simulations upon a high-fidelity turbine, showing the performance comparison between a nominal feedback compensator and the proposed MPC-based preview controller.
Language: | English |
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Publisher: | IEEE |
Year: | 2016 |
Pages: | 1463-1468 |
Proceedings: | 2016 European Control Conference (ECC) |
ISBN: | 1509025901 , 150902591X , 150902591x , 1509025928 , 9781509025909 , 9781509025916 and 9781509025923 |
Types: | Conference paper |
DOI: | 10.1109/ECC.2016.7810496 |
Adaptive control Blades MPC-based preview controller Predictive control Robustness Rotors Transfer functions Wind turbines angular velocity control blade-pitch feedback control system blades closed loop systems closed-loop dynamics closed-loop robustness closed-loop simulations constraint handling properties control system synthesis embedded robust output-feedback compensator feedback feedback design frequency-domain performance high-fidelity turbine model predictive control nominal feedback compensator pitch control (position) predictive control predictive control design robust control rotor speed tracking rotors (mechanical) structural load reduction upstream wind measurements wind wind turbine blade-pitch preview control wind turbines