Analysis on Influence of Effective Turbulence Intensity on Blade Root Fatigue Load of WTGS

Abstract:

Based on the Palmgren-Miner linear cumulative fatigue damage theory, the blade root fatigue loads in different effective turbulence intensities were calculated and analysed. The results show that when the air density and the wind speed are constant, the blade root fatigue loads increase linearly with the effective turbulence intensity increasing, and the slopes increase linearly with the wind speed increasing. According to these results, the main source of the blade root fatigue loads under different wind conditions can be estimated to provide a theoretical basis for WTGS type selection in the special sites.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 605-609
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.605
• Online since: June 2012
• Authors: Feng Gai, An Min Cai, Da Tong Zhang, Li Xiang Sun
• Keywords: Effective Turbulence Intensity, Fatigue Load, Palmgren-Miner Theory, WTGS

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