Siemens will supply five turbines with protection against electromagnetic emissions for a publicly-operated wind project in Germany's northern state of Schleswig-Holstein.


To be operated by Bürgerwindpark Löwenstedt, the wind power project will equipped with five Model SWT-3.0-113 units that are claimed to offer extremely low electromagnetic emissions of the permanent magnet generator and the electrical systems.

The wind project needs to be equipped with these turbines in order to meet the radio shielding requirements as it is being developed near to a Deutsche Flugsicherung’s radio navigation station.

Deutsche Flugsicherung is the company responsible for air traffic control in Germany.

Siemens Wind Power and Renewables division Onshore Markets CEO Thomas Richterich said: "The design concept of our direct-drive D3-series wind turbines offers numerous advantages.

"For the Löwenstedt project, we are especially pleased that the unique electromagnetic compatibility of these units has contributed to ensuring project feasibility at this location."

Siemens’ direct-drive wind turbines do not have to draw the electrical energy from moving components such as slip rings as these units have a closed cylindrical ring of conductive permanent magnets that rotate around the stator with the generator windings.

The generator’s power electronics and other electrical components with a shielded design are enclosed in a metal housing as well as within the structure of the nacelle and the steel of the tower.

As the power converter is placed in the bottom of the tower, the range of electromagnetic emissions is very limited, the company said.

All five Siemens wind turbines will be erected within a radius of two kilometers around the DFS receiver station.

Image: Siemens’ Model SWT-3.0-113 wind turbine. Photo: courtesy of Siemens AG.