Cost-optimized damping device for safer towers

Impact dampers are robust damping systems that can be installed during installation of the turbine. They calm down the tower oscillation by energy dissipation, by impact forces and by changing the dynamic properties of the tower. In that way the lock-in effect of the vortex induced vibrations can be prevented and the wind turbine is save.

 

Advantages of the ESM impact damper

☑️  Cost-optimized damping system:

• As impact damper contains no parts that need to be replaced over the service life.
• As the service effort is limited to a visual inspection.
• By dispensing with mechanically machined parts. Use of concrete as a moving mass and simple friction and elastomer damping.
• As no additional tower installations are required.
• Due to simple installation of impact damper in the horizontal tower section on the installation site.

☑️ Use of tower flange for impact damper fastening. Impact damper maintenance is possible via the existing flange platform. This means that no additional attachments are required.

☑️ Impact damper makes less movement under resonance excitation than comparable tuned mass damper. This can be advantageous in confined spaces.

☑️ The overall height of the impact damper is greatly reduced compared to classic tuned mass dampers.

☑️ No frequency adjustment required from the impact damper on site.

☑️ No power supply is required.

☑️ Due to its design, the impact damper mass is “locked” in the frame and can therefore not strike the tower wall under extreme events such as (shutdown processes, earthquakes, etc.).

☑️ Design, construction, drawing creation and strength calculation are largely automated, so that the impact damper concept can be quickly adapted to new specification requirements.

☑️  A well-proven system (greater than 1000 impact dampers in field) that has been distributed by ESM for over 5 years.

The ESM impact damper is a cost-optimized damping system that impresses with its low manufacturing, maintenance and installation costs. 

Simple design and thousands of field applications reduce the probability of failure to a minimum. Depending on the customer’s specification requirements, the use of impact damper or classic tuned mass damper may make sense for the customer.

 

ESM will be pleased to advise you in detail.