Active Edgewise Blade Damping Control of Large Wind Turbines by Using the Pitch Controller and an Interval Observer
Suryans Chamoli,
Adrian Gambier
Abstract:Large wind turbines have typically poorly damped structures. Hence, the absence of damping leads to aeroelastic oscillations, and the operational rotor speed can approach the critical rotor speed. By using damping injection, the control system can actively introduce some additional damping. In the present work, a control approach to reduce oscillations of the rotor blades in the edgewise direction is proposed. The concept is based on the damping injection mechanism, and an additional level of safety is obtaine… Show more
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