Theoretical and Experimental Analysis of Aerodynamic Noise in Small Wind Turbines

This paper presents an analysis of sound pressure levels through theoretical modeling and experimental validation in a 1 kW small wind turbine. The models used the are BPM (Brooks, Pope, Marcolini) BM (Brooks Marcolini), where turbine blades divided sections, each section has its own contribution with respect to total emitted level. noise propagation study were accomplished within requirements standard IEC 61400-11 Ed.3 NOM-081-SEMARNAT-1994. comparative results showed that methods have maximum error 5.5% corresponding rated speed 10 m/s. However, at low speeds, fit well data, for example, range from 5 8 data rotor’s aerodynamic is more evident speed, because under these conditions, environmental much less than noise. Finally, prevent possible negative effects on people’s health, there recommended minimum suitable distance between installations buildings.