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Wind and Structures
  Volume 30, Number 6, June 2020 , pages 663-678
DOI: https://doi.org/10.12989/was.2020.30.6.663
 


Comparison of semi-active and passive tuned mass damper systems for vibration control of a wind turbine
Eric R. Lalonde, Kaoshan Dai, Girma Bitsuamlak, Wensheng Lu and Zhi Zhao

 
Abstract
    Robust semi-active vibration control of wind turbines using tuned mass dampers (TMDs) is a promising technique. This study investigates a 1.5 megawatt wind turbine controlled by eight different types of tuned mass damper systems of equal mass: a passive TMD, a semi-active varying-spring TMD, a semi-active varying-damper TMD, a semi-active varying-damper-and-spring TMD, as well as these four damper systems paired with an additional smaller passive TMD near the mid-point of the tower. The mechanism and controllers for each of these TMD systems are explained, such as employing magnetorheological dampers for the varying-damper TMD cases. The turbine is modelled as a lumped-mass 3D finite element model. The uncontrolled and controlled turbines are subjected to loading and operational cases including service wind loads on operational turbines, seismic loading with service wind on operational turbines, and high-intensity storm wind loads on parked turbines. The displacement and acceleration responses of the tower at the first and second mode shape maxima were used as the performance indicators. Ultimately, it was found that while all the semi-active TMD systems outperformed the passive systems, it was the semi-active varying-damper-and-spring system that was found to be the most effective overall – capable of controlling vibrations about as effectively with only half the mass as a passive TMD. It was also shown that by reducing the mass of the TMD and adding a second smaller TMD below, the vibrations near the mid-point could be greatly reduced at the cost of slightly increased vibrations at the tower top.
 
Key Words
    wind turbine; multiple tuned mass damper; semi-active control; seismic loading; wind loading; case study
 
Address
Eric R. Lalonde:State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China/ Department of Civil and Environmental Engineering, University of Western Ontario, London, Canada
Kaoshan Dai:Department of Civil Engineering, Sichuan University, Chengdu, China
Girma Bitsuamlak:Department of Civil and Environmental Engineering, University of Western Ontario, London, Canada
Wensheng Lu and Zhi Zhao:State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China
 

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