Design and Implementation of a Sliding Mode Control based Pitch Controller for a Variable Pitch Wind Turbine
Author
Tran, Van Roy
Term
4. semester
Education
Publication year
2020
Submitted on
2020-12-01
Pages
46
Abstract
Dette projekt udvikler og implementerer en ikke-lineær pitch-regulator til en variabel pitch-vindmølle, der opererer over mærkevindhastigheden. Med udgangspunkt i aerodynamiske rotor- og drivtogmodeller opstilles en tilstandsrepræsentation, og styrelove for Sliding Mode Control (SMC) og Integral Sliding Mode Control (ISMC) udledes via en Lyapunov-baseret tilgang. Controllerne implementeres i en MATLAB/Simulink-model af en flydende offshore forsøgsopstilling, hvor den aerodynamiske del er i fokus. Valideringen gennemføres via simuleringer med realistiske vindforstyrrelsesdata og omfatter sammenligning med en konventionel PI-regulator. De rapporterede simuleringsresultater viser, at den ISMC-baserede pitch-regulator kan håndtere hurtige ændringer i vindhastighed og spore den ønskede rotationshastighed.
This project develops and implements a nonlinear pitch controller for a variable-pitch wind turbine operating above rated wind speed. Based on aerodynamic rotor and drive-train models, a state-space representation is constructed, and control laws for Sliding Mode Control (SMC) and Integral Sliding Mode Control (ISMC) are derived using a Lyapunov-based approach. The controllers are implemented in a MATLAB/Simulink model of a floating offshore experimental setup, with emphasis on the aerodynamic subsystem. Validation is carried out through simulations using real wind disturbance data and includes comparison with a conventional PI controller. The reported simulation results indicate that the ISMC-based pitch controller can handle rapid wind speed changes and track the desired rotational speed.
[This summary has been generated with the help of AI directly from the project (PDF)]
Documents