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2013
Conference Paper
Titel
Gain scheduling pitch control design for active tower damping and 3p harmonic reduction
Abstract
This article describes the design of 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. Three different control design methods have been investigated: (a) classical linear PID control design; (b) linear H control design based on LMI (Linear Matrix Inequalities) criteria; (c) nonlinear LPV (Linear Parameter Variant) control design based on convex optimization. The design methods will be discussed regarding their advantages and disadvantages.