Edgewise vibration suppression of multi-megawatt wind turbine blades using passive tuned mass dampers

Abstract

The lack of aerodynamic damping of wind turbine blades in the edgewise direction causes larger dynamic responses and lowers the reliability. As blades become longer, edgewise fatigue loading increases rapidly. To mitigate the blade edgewise vibration, structural control techniques using a tuned mass damper (TMD) are applied in this paper. The “TMD” module in FASTv8 was upgraded to enable the high-fidelity simulation of structural control of the blade response. With the developed tool, the optimal parameters and generalized design formulas were established through a parametric study. Also, the control effect of the optimal blade-TMD on reducing fatigue and extreme loads of two different multi-megawatts turbine blades is investigated. Fully-coupled non-linear time marching simulations were conducted by running key design load cases (DLCs) with site-specific meteorological conditions. The results provide insight into the potential benefits and impacts of passive structural control to reduce the fatigue and extreme loads of turbine blades.

Active Edgewise Blade Damping Control of Large Wind Turbines by Using the Pitch Controller and an Interval Observer

“…More common is the use of dampers for edgewise vibrations (see, e.g., [5] for active systems, [16,17] for passive systems, and [18] for semi-active systems. In addition, a shunt damping approach is presented in [19] (see [20] for a review on shunt damping vibration control).…”

Pole‐Placement‐Based Calibration of an Electromagnetically Realizable Inerter‐Based Vibration Absorber (IDVA) for Rotating Wind Turbine Blades

“…Te result demonstrated the improved efectiveness of the proposed damper compared with the conventional TMD. Park and Lackner [29] investigated the vibration mitigation for multimegawatt wind turbine blades in the edgewise direction under passive TMDs, demonstrating their potential benefts and impacts. In these studies, diferent damper devices are introduced to wind turbine blades, forming a coupling blade-damper system, and numerical optimizations are applied to the coupling system for damper design.…”