Wind Energy

Development of active oscillating bedding to reduce sound emissions of wind driven power stations - laboratory tests

A new oscillation-insulating concept for structure-borne noise has been introduced. Conversion was achieved with load-bearing interfaces. Compared with passive bearing elements, the active interfaces feature a better insulation behavior for structure-borne noise within the range of 200 to 1000 Hz. A constructive integration of the interfaces into the bearing of a gear of a wind-driven power station is possible but does require a detailed design and construction of the gearbox bearing for conversion to take place. Bearings for devices with lower loads can utilize the new structure-borne noise insulating bearing elements with relatively little construction expenditure (detail information in German).

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Source: Federal Foundation for the Environment (DBU))