Function
In some cases, a large damper is fitted at the top of the tower in order to reduce tower and foundation loading.
Who supplies them
Tuned dampers are generally made from bought-in items.
Key facts
Typically, dampers are liquid-filled. The natural frequency of ‘sloshing’ is tuned to have maximum effect in reducing tower fatigue loading due to varying aerodynamic loads from the rotor and wave loading from the foundation.
Dampers can also reduce transient loads during turbine shutdowns.
What’s in it
- Support structure
- Liquid container
- Damping liquid (generally water-based)