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Wölfel Wind Systems – Structural Health Monitoring, Ice Detection, Dampers for Tonalities and Vibrations
High vibration levels, varying wind speeds or noise emission – onshore and offshore these highly diverse areas require professional engineering to allow for the safe and efficient operation of the WT and to comply with the given legal requirements.
From ice detection and reduction of tonalities to structural health monitoring (SHM) on blades, towers or foundations – in the field of wind energy we offer professional services and system solutions to increase yields, extend the service life and optimize inspections. We are experts in vibration and signal analysis, provide information on structural damage and the associated service life of your wind turbines, monitor material fatigue and help you to comply with legal requirements regarding noise emissions.
WHAT DO YOU DO WHEN TOWERS SWING?
Strong vibrations accelerate material fatigue and the risk of damage, such as cracks in the rotor blades, may increase significantly. When wind turbines start to vibrate, individual frequencies in the background noise of the turbine can also become audible – this is referred to as tonality. As these are perceived as particularly unpleasant for humans, they usually lead to a more negative evaluation of the sound emission, often leading to the systems only being allowed to run in sound-reduced mode.
HOW DO YOU DISTRACT KNOWLEDGE FROM A FLOOD OF DATA?
Only if the individual components of the wind turbine as well as the loads and stresses are precisely known can you react quickly to deviations and damage and initiate effective countermeasures. Structural Health Monitoring (SHM) systems therefore collect large amounts of data, in particular structural-mechanical parameters such as acceleration, displacement and stretch. The decisive task, however, is the evaluation and interpretation of this measured data.
CHALLENGE OFFSHORE – HOW DO YOU KEEP EVERYTHING RUNNING SMOOTHLY IN SPITE OF ROUGH WINDS?
Higher and more constant wind speeds than on land make the sea an attractive location for wind farms. At the same time, the wind turbines there are also exposed to extreme environmental influences. Strong waves and high wind speeds lead to high dynamic loads. This results in increased requirements during both installation and operation.
CHALLENGE ONSHORE – WHEN DOES WIND MAKE ALL THE RIGHT NOISE?
The space available for onshore wind turbines is limited. Therefore, more and more densely populated or inaccessible areas have to be developed. This is accompanied by a large number of licensing requirements, including noise emission, ice Shedding and seismological stations.
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