Vertical axis wind turbine vibroacoustics

This report shows the purpose of research undertaken to define occurrences of Vertical Axis Wind Turbines (VAWT). A true threat for natural energy resources depletion, legal requirement for obtaining 7.5% electric energy from renewable sources till 2010, easy installation of vertical axis wind turbines, resistance to high wind speeds, level of knowledge on determining wind energy efficiency factors using two-dimensional discussion (Betz’s law – one-dimensional discussion) and likelihood low-frequency characteristics of acoustic spectral of turbine in operation have all become a motive for starting identification research and its accompanying occurrences of VAWT in operation.