Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines

Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

404 Downloads (Pure)

Resumé

Condition monitoring can be used to detect faults and failures at an early stage. Thus it decreases the overall maintenance expenses. This report gives an example of condition monitoring with focus on early crack detection in the main shaft of an offshore wind turbine. This article discusses the applicability of different condition monitoring techniques like performance monitoring, strain gauge results and vibration analysis for crack detection on the low speed shaft. Different signal processing methods like descriptive statistics, Fourier Transforms, Wavelet transforms, Modal Assurance Criteria and Time Synchronous Averaging are investigated and tested for applicability in order to detect cracks on the low speed shaft of a wind turbine. The results of this study can be used to define alarm thresholds as well as detection characteristics for main shaft cracks leading to failure of the main shaft. The example in this paper showed that the crack on the main shafts needs to be relatively large (around 20 % of the main shaft diameter) until it can be detected.
OriginalsprogEngelsk
Udgivelses stedAalborg
ForlagDepartment of Civil Engineering, Aalborg University
Antal sider40
StatusUdgivet - 2016
NavnDCE Technical reports
Nummer212
ISSN1901-726X

Fingerprint

Offshore wind turbines
Condition monitoring
Crack detection
Cracks
Vibration analysis
Strain gages
Wind turbines
Wavelet transforms
Fourier transforms
Signal processing
Statistics
Monitoring

Emneord

  • Offshore wind turbines
  • Monitoring

Citer dette

Ambühl, S., & Sørensen, J. D. (2016). Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines. Aalborg: Department of Civil Engineering, Aalborg University. DCE Technical reports, Nr. 212
Ambühl, Simon ; Sørensen, John Dalsgaard. / Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines. Aalborg : Department of Civil Engineering, Aalborg University, 2016. 40 s. (DCE Technical reports; Nr. 212).
@book{aa0f141ff1eb4ae6a4f686a04268100e,
title = "Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines",
abstract = "Condition monitoring can be used to detect faults and failures at an early stage. Thus it decreases the overall maintenance expenses. This report gives an example of condition monitoring with focus on early crack detection in the main shaft of an offshore wind turbine. This article discusses the applicability of different condition monitoring techniques like performance monitoring, strain gauge results and vibration analysis for crack detection on the low speed shaft. Different signal processing methods like descriptive statistics, Fourier Transforms, Wavelet transforms, Modal Assurance Criteria and Time Synchronous Averaging are investigated and tested for applicability in order to detect cracks on the low speed shaft of a wind turbine. The results of this study can be used to define alarm thresholds as well as detection characteristics for main shaft cracks leading to failure of the main shaft. The example in this paper showed that the crack on the main shafts needs to be relatively large (around 20 {\%} of the main shaft diameter) until it can be detected.",
keywords = "Offshore wind turbines, Monitoring, Offshore wind turbines, Monitoring",
author = "Simon Amb{\"u}hl and S{\o}rensen, {John Dalsgaard}",
year = "2016",
language = "English",
series = "DCE Technical reports",
publisher = "Department of Civil Engineering, Aalborg University",
number = "212",

}

Ambühl, S & Sørensen, JD 2016, Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines. DCE Technical reports, nr. 212, Department of Civil Engineering, Aalborg University, Aalborg.

Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines. / Ambühl, Simon; Sørensen, John Dalsgaard.

Aalborg : Department of Civil Engineering, Aalborg University, 2016. 40 s. (DCE Technical reports; Nr. 212).

Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

TY - RPRT

T1 - Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines

AU - Ambühl, Simon

AU - Sørensen, John Dalsgaard

PY - 2016

Y1 - 2016

N2 - Condition monitoring can be used to detect faults and failures at an early stage. Thus it decreases the overall maintenance expenses. This report gives an example of condition monitoring with focus on early crack detection in the main shaft of an offshore wind turbine. This article discusses the applicability of different condition monitoring techniques like performance monitoring, strain gauge results and vibration analysis for crack detection on the low speed shaft. Different signal processing methods like descriptive statistics, Fourier Transforms, Wavelet transforms, Modal Assurance Criteria and Time Synchronous Averaging are investigated and tested for applicability in order to detect cracks on the low speed shaft of a wind turbine. The results of this study can be used to define alarm thresholds as well as detection characteristics for main shaft cracks leading to failure of the main shaft. The example in this paper showed that the crack on the main shafts needs to be relatively large (around 20 % of the main shaft diameter) until it can be detected.

AB - Condition monitoring can be used to detect faults and failures at an early stage. Thus it decreases the overall maintenance expenses. This report gives an example of condition monitoring with focus on early crack detection in the main shaft of an offshore wind turbine. This article discusses the applicability of different condition monitoring techniques like performance monitoring, strain gauge results and vibration analysis for crack detection on the low speed shaft. Different signal processing methods like descriptive statistics, Fourier Transforms, Wavelet transforms, Modal Assurance Criteria and Time Synchronous Averaging are investigated and tested for applicability in order to detect cracks on the low speed shaft of a wind turbine. The results of this study can be used to define alarm thresholds as well as detection characteristics for main shaft cracks leading to failure of the main shaft. The example in this paper showed that the crack on the main shafts needs to be relatively large (around 20 % of the main shaft diameter) until it can be detected.

KW - Offshore wind turbines

KW - Monitoring

KW - Offshore wind turbines

KW - Monitoring

M3 - Report

T3 - DCE Technical reports

BT - Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines

PB - Department of Civil Engineering, Aalborg University

CY - Aalborg

ER -

Ambühl S, Sørensen JD. Different Condition Monitoring Approaches for Main Shafts of Offshore Wind Turbines. Aalborg: Department of Civil Engineering, Aalborg University, 2016. 40 s. (DCE Technical reports; Nr. 212).