Based on first-order cost estimates informed by current technology, the most wind-rich regions of the country generally show an economic preference for the lowest considered tower height; higher hub heights (e., 110 m and 140 m) are often preferred in more moderate wind speed.
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The Windspire, a small VAWT intended for individual (home or office) use was developed in the early 2000s by US company Mariah Power. The company reported that several units had been installed across the US by June 2008. Arborwind, an, based company, produces a patented small VAWT which has been installed at several US locations as of 2013.
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However, a growing concern is threatening the integrity of this clean energy source: the theft of wind turbine components. This issue not only undermines the efficiency of wind farms but also poses significant economic and operational challenges.
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The purpose of this paper is to systematically summarize and analyze the re-search results of the existing wind power tower structure in wind resistance, seismic resistance and vibration control, and put forward the direction and sug-gestions for further optimization.
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