Cause of damage to Vertical Sky® prototype established, measures being implemented
Following the incident involving the Vertical Sky® prototype system at the wind test field in Grevenbroich (NRW, Germany) in November 2020, extensive investigations were initiated and have now been completed.
On the basis of the available measured data, it was possible to analyze the prevailing wind conditions, to reconstruct their effect on the system in a simulation environment and, finally, to determine the cause. A previously unknown wind situation led to an overload of the wind turbine in the operating state existing at that point in time. The investigations showed that the same and similar situations can be avoided in future by means of simple precautions. The measures for this are currently being implemented.
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