Wind Turbine Tonalities Reduction
Wind Turbine Tonalities Reduction
What we do
For fixed frequency tonalities, Micromega designs and manufactures dedicated Tuned Mass Absorbers (TMA), which are mounted on the wind turbine gearbox torque arms in order to prevent these vibrations from converting to sound in emission areas and propagating to the wind turbine surrounding area.
advantages
- Add-on to the gear box
- Less complaints from people in the neighborhood.
USE CASES
Wind Turbine Tonalities Reduction
Wind turbines experience tonalities, which are sounds at discrete frequencies peaking above the broadband noise, mainly originating from the gearbox vibrations then transmitted to sound emission areas, such as the tower or the blades. If a tonality occurs, the resulting tonal noise is particularly unpleasant, that is why the standards (IEC 61400-11) assign a so-called tonality surcharge to the determined broadband sound power level for tonal components, which can be up to +6dB. With this surcharge, the authorized limits for noise emissions or the contractually agreed noise level are often exceeded.
For fixed frequency tonalities, Micromega designs and manufactures dedicated Tuned Mass Dampers (TMA), which are mounted on the wind turbine gearbox torque arms in order to prevent these vibrations from reaching the sound emission areas.
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