Next Article in Journal
Life Cycle Estimation of Battery Energy Storage Systems for Primary Frequency Regulation
Next Article in Special Issue
A Comparative Computational Fluid Dynamic Study on the Effects of Terrain Type on Hub-Height Wind Aerodynamic Properties
Previous Article in Journal
Prediction of Remaining Useful Life of Wind Turbine Bearings under Non-Stationary Operating Conditions
Previous Article in Special Issue
Assessment of Wind Energy Potential as a Power Generation Source: A Case Study of Eight Selected Locations in Northern Cyprus
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle
Energies 2018, 11(12), 3319; https://doi.org/10.3390/en11123319

Application of an Eddy Current-Tuned Mass Damper to Vibration Mitigation of Offshore Wind Turbines

State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, No. 135 Yaguan Road, Jinnan District, Tianjin 300350, China
*
Author to whom correspondence should be addressed.
Received: 5 November 2018 / Revised: 21 November 2018 / Accepted: 26 November 2018 / Published: 28 November 2018
(This article belongs to the Collection Wind Turbines)
Full-Text   |   PDF [9190 KB, uploaded 28 November 2018]   |  
  |   Review Reports

Abstract

Offshore wind turbine (OWT) structures are highly sensitive to complex ambient excitations, especially extreme winds. To mitigate the vibrations of OWT structures under windstorm or typhoon conditions, a new eddy current with tuned mass damper (EC-TMD) system that combines the advantages of the eddy current damper and the tuned mass damper is proposed to install at the top of them. In the present study, the electromagnetic theory is applied to estimate the damping feature of the eddy current within the EC-TMD system. Then, the effectiveness of the EC-TMD system for vibration mitigation is demonstrated by small-scale tests. Furthermore, the EC-TMD system is used to alleviate structural vibrations of the OWT supported by composite bucket foundations (CBF) under extreme winds at the Xiangshui Wind Farm of China. It is found that the damping of the EC-TMD system can be ideally treated as having linear viscous damping characteristics, which are influenced by the gaps between the permanent magnets and the conductive materials as well as the permanent magnet layouts. Meanwhile, the RMS values of displacements of the OWT structure can be mitigated by 16% to 28%, and the acceleration can also be reduced significantly. Therefore, the excellent vibration-reducing performance of the EC-TMD system is confirmed, which provides meaningful guidance for application in the practical engineering of OWTs. View Full-Text
Keywords: offshore wind turbine; eddy current tuned mass damper; extreme winds; vibration mitigation; small scale test; prototype observation; numerical simulation offshore wind turbine; eddy current tuned mass damper; extreme winds; vibration mitigation; small scale test; prototype observation; numerical simulation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Lian, J.; Zhao, Y.; Lian, C.; Wang, H.; Dong, X.; Jiang, Q.; Zhou, H.; Jiang, J. Application of an Eddy Current-Tuned Mass Damper to Vibration Mitigation of Offshore Wind Turbines. Energies 2018, 11, 3319.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top