Noise Source Localization Using a Compact Phased Array: Studies on a Full Scale Wind Turbine in a Wind Farm

Autor:	Robert P. Dougherty, Ganesh Raman, Rakesh C. Ramachandran
Rok vydání:	2012
Předmět:	Engineering Microphone array Wind power Renewable Energy Sustainability and the Environment business.industry Phased array Microphone Nacelle Acoustics Energy Engineering and Power Technology Aerodynamics Turbine Noise Electronic engineering business
Zdroj:	Wind Engineering. 36:589-604
ISSN:	2048-402X 0309-524X
DOI:	10.1260/0309-524x.36.5.589
Popis:	Locating the dominant noise sources on a wind turbine is an important problem in designing and developing low noise wind turbines. Previously very large microphone arrays were used to locate these sources. The primary focus of this paper is to show that using a compact and mobile microphone array with advanced beamforming algorithms, the noise sources can be successfully located and quantified. The results from the qualification experiments on the microphone array conducted in laboratory using synthetic noise sources show the differences between the various beamforming algorithms used in this study (both frequency and time domain algorithms). The initial experimental results on a full scale wind turbine reveal that it is indeed possible to locate the noise sources using a compact microphone array by successfully locating the two dominant noise sources on the wind turbine namely, aerodynamic noise near the blade tip and mechanical noise from nacelle.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2db52cb814cc66aa02f4b8c8f1a492be https://doi.org/10.1260/0309-524x.36.5.589 Zobrazit plný text záznamu