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Application of vibration monitoring to the detection of early misalignment and rub failures in a tidal turbine

Application of vibration monitoring to the detection of early misalignment and rub failures in a... Research on tidal turbines has been mainly focused on the design for greater energy efficiency for the last ten years. However, achieving a reliable operation is becoming more and more crucial in current studies. This work presents a continuous monitoring of those turbines based on vibrations controls the control, this technique allows implementing predictive maintenance strategies. The vibration response is analysed in a laboratory test rig. That vibration can be produced by a phenomenon as frequent as a misalignment of the shaft as well as their consequences in the early production of partial rub of the rotor/stator. The response obtained shows that one can easily detect a vibration signal with a misalignment in the shaft of 50 μm. Also, the rub of the shaft/seal is detected with the increase of the dynamic stiffness of the system from 12,87 to 14,30 KN/m. Additionally, the resonance frequency also increases its value from 2400 to 2500 rpm. The application of this early detection on the watertight seal of a tidal turbine, would potentially avoid severe hazards in these equipment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Technology and Economics of Smart Grids and Sustainable Energy Springer Journals

Application of vibration monitoring to the detection of early misalignment and rub failures in a tidal turbine

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References (6)

Publisher
Springer Journals
Copyright
Copyright © 2019 by Springer Nature Singapore Pte Ltd.
Subject
Energy; Energy Systems; Power Electronics, Electrical Machines and Networks; Energy Policy, Economics and Management
eISSN
2199-4706
DOI
10.1007/s40866-019-0065-1
Publisher site
See Article on Publisher Site

Abstract

Research on tidal turbines has been mainly focused on the design for greater energy efficiency for the last ten years. However, achieving a reliable operation is becoming more and more crucial in current studies. This work presents a continuous monitoring of those turbines based on vibrations controls the control, this technique allows implementing predictive maintenance strategies. The vibration response is analysed in a laboratory test rig. That vibration can be produced by a phenomenon as frequent as a misalignment of the shaft as well as their consequences in the early production of partial rub of the rotor/stator. The response obtained shows that one can easily detect a vibration signal with a misalignment in the shaft of 50 μm. Also, the rub of the shaft/seal is detected with the increase of the dynamic stiffness of the system from 12,87 to 14,30 KN/m. Additionally, the resonance frequency also increases its value from 2400 to 2500 rpm. The application of this early detection on the watertight seal of a tidal turbine, would potentially avoid severe hazards in these equipment.

Journal

Technology and Economics of Smart Grids and Sustainable Energy – Springer Journals

Published: May 8, 2019

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