The Science of Making Torque from Wind | |
Optimal sensor placement for modal testing on wind turbines | |
Schulze, Andreas^1 ; Zierath, János^2 ; Rosenow, Sven-Erik^2 ; Bockhahn, Reik^2 ; Rachholz, Roman^1 ; Woernle, Christoph^1 | |
Department of Technical Dynamics, University of Rostock, Justus-von-Liebig-Weg 6, Rostock | |
18059, Germany^1 | |
W2E Wind to Energy GmbH, Strandstrasse 96, Rostock | |
18055, Germany^2 | |
关键词: Acceleration sensors; Dynamic behaviours; Flexible multi bodies; Mechanical structures; Operational modal analysis; Optimal placements; Optimal sensor placement; Sensor configurations; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/753/7/072031/pdf DOI : 10.1088/1742-6596/753/7/072031 |
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来源: IOP | |
【 摘 要 】
The mechanical design of wind turbines requires a profound understanding of the dynamic behaviour. Even though highly detailed simulation models are already in use to support wind turbine design, modal testing on a real prototype is irreplaceable to identify site-specific conditions such as the stiffness of the tower foundation. Correct identification of the mode shapes of a complex mechanical structure much depends on the placement of the sensors. For operational modal analysis of a 3 MW wind turbine with a 120 m rotor on a 100 m tower developed by W2E Wind to Energy, algorithms for optimal placement of acceleration sensors are applied. The mode shapes used for the optimisation are calculated by means of a detailed flexible multibody model of the wind turbine. Among the three algorithms in this study, the genetic algorithm with weighted off-diagonal criterion yields the sensor configuration with the highest quality. The ongoing measurements on the prototype will be the basis for the development of optimised wind turbine designs.
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Optimal sensor placement for modal testing on wind turbines | 1614KB | download |