The effect of wakes on the fatigue damage of wind turbine components over their entire lifetime using short-term load measurements

Karlina-Barber, Sarah; Mechler, Sebastian; Nitschke, Mario

doi:10.1088/1742-6596/753/7/072022

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Thus, it is important to assess fatigue damage in terms of DELs. The equivalent amount of damage as original loads can be caused with constant-amplitude load ranges, and the technique was used by many researchers [44][45][46][47].…”

Section: Fatigue Load Analysis Methodsmentioning

confidence: 99%

Investigation on the Effect of the Baseline Control System on Dynamic and Fatigue Characteristics of Modern Wind Turbines

Yuan

Xie

et al. 2022

Applied Sciences

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In order to investigate the effect of a baseline control system (BCS) on dynamic and fatigue characteristics of modern wind turbines, the simulation results of a 5-MW wind turbine subjected to wind loading without and with considering BCS (No. 1 and No. 2, respectively) were compared. The displacement and moment of tower and blades were compared, and the rainflow counting algorithm was used to analyze the fatigue load expressed in damage equivalent load (DEL). The results indicate that the mean and maximum values of structural dynamic responses in No. 2 have a great reduction with wind speed exceeding the rated speed comparing to No. 1; the 3P (3-times the frequency of rotor speed) of the wind turbine rotor speed will be close to the tower fore-aft (FA) natural frequency with the wind velocity around the cut-in speed in No. 2, which caused larger dynamic responses, number of load cycles, and DELs for the tower compared with No. 1; when wind velocity exceeds the rated wind speed, the BCS caused higher fluctuation of loads, increasing the related DELs. It is concluded that when analyzing the dynamic responses and designing wind turbine tower and blades, taking the BCS into account during analysis is significant.

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Section: Fatigue Load Analysis Methodsmentioning

confidence: 99%

Investigation on the Effect of the Baseline Control System on Dynamic and Fatigue Characteristics of Modern Wind Turbines

Yuan

Xie

et al. 2022

Applied Sciences

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“…Very recently, some first developments, mainly focused on blade loads, have been obtained. In [18], short-term load measurements from a Vestas V66 wind turbine located in Germany are employed for estimating the effect of wakes on fatigue damage and on expected lifetime. In [19], fatigue load prediction is attempted using SCADA data and artificial neural network techniques.…”

Section: Introductionmentioning

confidence: 99%

Wind Turbine Loads Induced by Terrain and Wakes: An Experimental Study through Vibration Analysis and Computational Fluid Dynamics

et al. 2017

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Abstract:A wind turbine is a very well-known archetype of energy conversion system working at non-stationary regimes. Despite this, a deep mechanical comprehension of wind turbines operating in complicated conditions is still challenging, especially as regards the analysis of experimental data. In particular, wind turbines in complex terrain represent a very valuable testing ground because of the possible combination of wake effects among nearby turbines and flow accelerations caused by the terrain morphology. For these reasons, in this work, a cluster of four full-scale wind turbines from a very complex site is studied. The object of investigation is vibrations, at the level of the structure (tower) and drive-train. Data collected by the on-board condition monitoring system are analyzed and interpreted in light of the knowledge of wind conditions and operating parameters collected by the Supervisory Control And Data Acquisition (SCADA). A free flow Computational Fluid Dynamics (CFD) simulation is also performed, and it allows one to better interpret the vibration analysis. The main outcome is the interpretation of how wakes and flow turbulences appear in the vibration signals, both at the structural level and at the drive-train level. Therefore, this wind to gear approach builds a connection between flow phenomena and mechanical phenomena in the form of vibrations, representing a precious tool for assessing loads in different working conditions.

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Lifetime extension of onshore wind turbines: A review covering Germany, Spain, Denmark, and the UK

Ziegler

Gonzalez

Rubert

et al. 2018

Renewable and Sustainable Energy Reviews

280

162

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The effect of wakes on the fatigue damage of wind turbine components over their entire lifetime using short-term load measurements

Cited by 5 publications

References 3 publications

Investigation on the Effect of the Baseline Control System on Dynamic and Fatigue Characteristics of Modern Wind Turbines

Investigation on the Effect of the Baseline Control System on Dynamic and Fatigue Characteristics of Modern Wind Turbines

Wind Turbine Loads Induced by Terrain and Wakes: An Experimental Study through Vibration Analysis and Computational Fluid Dynamics

Lifetime extension of onshore wind turbines: A review covering Germany, Spain, Denmark, and the UK

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