Noise reduction

Serrations are based on the bionic principle of the micro-structure of bird feathers and enable owls to glide almost silently. The trailing edge serrations (TES) have established themselves in wind power as a state-of-the-art solution to reduce noise emissions.

WTS has developed an innovative 3D geometry for TES, allowing significantly greater noise reduction compared to the geometries based on 2D designs with isosceles triangles that have been in use to date.

Noise emissions from wind energy converters are one of the greatest factors restricting their expansion and the repowering of wind energy on land. The latest legal developments currently jeopardise even the implementation of already planned projects due to the new, stricter regulations on calculating the sound that is actually emitted. These include, for example, the requirement for wind energy converters to be shut down at night, which makes it nearly impossible to operate them at a profit. WTS serrations can help with achieving planning security and possibly enable increased performance of wind energy converters in noise-sensitive locations.