Dynamic survey of wind turbine vibrations

Chih-Hung Chiang; Keng-Tsang Hsu; Chia-Chi Cheng; Chieh-Chen Pan; Chi-Luen Huang; Tao-Ming Cheng

doi:10.1117/12.2219483

8 April 2016 Dynamic survey of wind turbine vibrations

Chih-Hung Chiang, Keng-Tsang Hsu, Chia-Chi Cheng, Chieh-Chen Pan, Chi-Luen Huang, Tao-Ming Cheng

Proceedings Volume 9804, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2016; 98040J (2016) https://doi.org/10.1117/12.2219483
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

Six wind turbines were blown to the ground by the wind gust during the attack of Typhoon Soudelor in August 2015. Survey using unmanned aerial vehicle, UAV, found the collapsed wind turbines had been broken at the lower section of the supporting towers. The dynamic behavior of wind turbine systems is thus in need of attention. The vibration of rotor blades and supporting towers of two wind turbine systems have been measured remotely using IBIS, a microwave interferometer. However the frequency of the rotor blade can be analyzed only if the microwave measurements are taken as the wind turbine is parked and secured. Time-frequency analyses such as continuous wavelet transform and reassigned spectrograms are applied to the displacement signals obtained. A frequency of 0.44Hz exists in both turbines B and C at various operating conditions. Possible links between dynamic characteristics and structural integrity of wind turbine –tower systems is discussed.

Citation Download Citation

Chih-Hung Chiang, Keng-Tsang Hsu, Chia-Chi Cheng, Chieh-Chen Pan, Chi-Luen Huang, and Tao-Ming Cheng "Dynamic survey of wind turbine vibrations", Proc. SPIE 9804, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2016, 98040J (8 April 2016); https://doi.org/10.1117/12.2219483

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