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Author:

Wang, P.-G. (Wang, P.-G..) | Lu, H.-Q. (Lu, H.-Q..) | Wang, M. (Wang, M..) | Nagarajaiah, S. (Nagarajaiah, S..) | Du, X.-L. (Du, X.-L..)

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EI Scopus SCIE

Abstract:

Wind turbine (WT) with a long period is a dynamic sensitive but lightly damped structure, which may be prone to earthquakes, especially for the near-fault pulse-like records containing large amplitude of velocity pulse with a period close to WT's period. An efficient and convenient solution to enhance the damping effect of WT, amplifying damping transfer system (ADTS), is applied by transferring the upper rotation of the wind turbine to its bottom with an amplified damping mechanism. The feasibility of the ADTS is experimentally validated through free vibration tests, sinusoidal excitation tests, and shaking table tests for both non-pulse-like earthquakes and pulse-like earthquakes. Test results of free vibration validate that more than 6.2% extra damping ratio is provided by the ADTS to the tested WT model; while the supplemental stiffness of ADTS shifts the frequency of the tested WT model from 2.16 Hz to 2.61 Hz. Sinusoidal tests show ADTS reduces the displacement (acceleration) response of the tested WT by about 73.88% (58.16%) when subjected to resonant frequency. It is also observed that the ADTS is effective in controlling the seismic responses of non-pulse-like earthquakes and pulse-like earthquakes, providing at least 30% of the reduction in displacement and acceleration. Simulations with high accuracy indicate that the pulse signal usually concentrates the majority of the input energy of near-fault pulse-like earthquakes; while the ADTS can absorb most of the input energy (over 90%), protecting the WT away from undergoing excessive vibration. © 2023 Elsevier Ltd

Keyword:

Wind turbine Shaking table test Free vibration test Near-fault pulse-like earthquake Amplifying damping transfer system Sinusoidal test

Author Community:

  • [ 1 ] [Wang P.-G.]State Key Laboratory of Bridge Engineering Safety and Resilience, Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Wang P.-G.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 3 ] [Lu H.-Q.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 4 ] [Wang M.]State Key Laboratory of Bridge Engineering Safety and Resilience, Beijing University of Technology, Beijing, 100124, China
  • [ 5 ] [Wang M.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China
  • [ 6 ] [Wang M.]Department of Architecture and Architectural Engineering, Kyoto University, Kyoto, Japan
  • [ 7 ] [Nagarajaiah S.]Department of Civil and Environmental Engineering, Rice University, Houston, 77005, TX, United States
  • [ 8 ] [Nagarajaiah S.]Department of Mechanical Engineering, Rice University, Houston, 77005, TX, United States
  • [ 9 ] [Nagarajaiah S.]Department of Material Science and Nano Engineering, Rice University, Houston, 77005, TX, United States
  • [ 10 ] [Du X.-L.]State Key Laboratory of Bridge Engineering Safety and Resilience, Beijing University of Technology, Beijing, 100124, China
  • [ 11 ] [Du X.-L.]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China

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Source :

Soil Dynamics and Earthquake Engineering

ISSN: 0267-7261

Year: 2023

Volume: 175

4 . 0 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 44

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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