DocumentCode :
183597
Title :
Adaptive passivity based individual pitch control for wind turbines in the full load region
Author :
Sorensen, Kim L. ; Galeazzi, Roberto ; Odgaard, Peter F. ; Niemann, Helen ; Poulsen, Niels Kjolstad
Author_Institution :
Centre for Autonomous Marine Oper. & Syst., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
fYear :
2014
fDate :
4-6 June 2014
Firstpage :
554
Lastpage :
559
Abstract :
This paper tackles the problem of power regulation for wind turbines operating in the top region by an adaptive passivity based individual pitch control strategy. An adaptive nonlinear controller that ensures passivity of the mapping aerodynamic torque-regulation error is proposed, where the inclusion of gradient based adaptation laws allows for the on-line compensation of variations in the aerodynamic torque. The closed-loop equilibrium point of the regulation error dynamics is shown to be UGAS (uniformly globally asymptotically stable). Numerical simulations show that the proposed control strategy succeeds in regulating the power output of the wind turbine despite fluctuations of the wind field due to wake and turbulence, without overloading the pitch actuators.
Keywords :
adaptive control; compensation; gradient methods; nonlinear control systems; power control; torque control; wind turbines; UGAS; adaptive nonlinear controller; adaptive passivity based individual pitch control; aerodynamic torque-regulation error mapping; compensation; full load region; gradient based adaptation laws; numerical simulations; pitch actuators; power regulation; turbulence; uniformly globally asymptotically stable; wake; wind turbines; Aerodynamics; Blades; Generators; Rotors; Torque; Wind speed; Wind turbines; Adaptive systems; Nonlinear systems; Power systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference (ACC), 2014
Conference_Location :
Portland, OR
ISSN :
0743-1619
Print_ISBN :
978-1-4799-3272-6
Type :
conf
DOI :
10.1109/ACC.2014.6858651
Filename :
6858651
Link To Document :
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