Aerodynamic noise generated by wind turbines is a major environmental concern. This paper focuses on developing a methodical approach to measure and analyze this noise. Blade Element Momentum Theory (BEMT), in conjunction with specific winglet parameters, is used to design the blades for a small-scale wind turbine. The study involves creating Matlab code to facilitate the analysis of the aerodynamic noise, which includes (i) performing Fast Fourier Transform (FFT) to examine noise frequency components, (ii) converting voltage signals to sound pressure levels (dB), and (iii) filtering out motor noise to isolate aerodynamic noise. This experimental method enables straightforward realization and comparison of test results.

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Experimental and Research Analysis of Aerodynamic Noise in Small Horizontal-Axis Wind Turbine Blades

  • Guo-Yuan Huang,
  • Yu-Jen Chen

摘要

Aerodynamic noise generated by wind turbines is a major environmental concern. This paper focuses on developing a methodical approach to measure and analyze this noise. Blade Element Momentum Theory (BEMT), in conjunction with specific winglet parameters, is used to design the blades for a small-scale wind turbine. The study involves creating Matlab code to facilitate the analysis of the aerodynamic noise, which includes (i) performing Fast Fourier Transform (FFT) to examine noise frequency components, (ii) converting voltage signals to sound pressure levels (dB), and (iii) filtering out motor noise to isolate aerodynamic noise. This experimental method enables straightforward realization and comparison of test results.