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Infrasound of a wind turbine reanalyzed as power spectrum and power spectral density

2021; Elsevier BV; Volume: 533; Linguagem: Inglês

10.1016/j.jsv.2021.116310

1095-8568

Johannes Baumgart, Christoph Fritzsche, Steffen Marburg,

Aerodynamics and Acoustics in Jet Flows

The infrasound levels due to the blade-tower interaction generated by a wind turbine in the publication by Pilger and Ceranna (JSV, Vol. 388, pp. 188–200, 2017) have to be corrected to be interpreted as sound pressure level. Also, the electrical power of the wind turbine should be corrected for the high wind case to 660 kW. We provide a reanalysis of the measured data with a power spectrum showing levels for the low-frequency signal of the wind turbine about 34 dB below the original work. All measured levels at a distance of 200 m from the wind turbine's infrasound signal are well below the hearing threshold.