Gain Scheduling Pitch Control for Fatigue Load Reduction for Wind Turbines

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ISBN: 3839610222
ISBN 13: 9783839610220
Autor: Shan, Wei Wei
Verlag: Fraunhofer Verlag
Umfang: 160 S., 64 farbige Illustr.
Erscheinungsdatum: 20.07.2016
Auflage: 1/2024
Format: 1.1 x 21 x 14.8
Gewicht: 241 g
Produktform: Kartoniert
Einband: Kartoniert

This work investigates several methods for the design of a pitch control system, which actively reduces the fatigue loads on the tower of a wind turbine. As major contribution, this work demonstrates that it is possible to design collective pitch controllers that, additionally to basic rotor speed control and active damping of the first fore-aft tower bending mode, allow to reduce the fore-aft tower bending loads due to 3p harmonic excitation.

Artikelnummer: 9537081 Kategorie:

Beschreibung

Three different control design methods have been investigated, and will be discussed regarding their advantages and disadvantages: (1) Classical linear PID (Proportional Integral Derivative) control design; (2) Linear H8 control design based on LMI (Linear Matrix Inequalities) criteria; (3) Nonlinear LPV (Linear Parameter Variant) control design based on convex optimization. Controller input signals in all cases are rotor speed and axial tower top acceleration. Because of the nonlinear aerodynamics of a wind turbine, for each design some type of gain scheduling is required. The basic practical aspects, e.g. anti-windup and gain scheduling have been verified in non-linear simulations.

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