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Fault Diagnosis of Wind Turbine Gearboxes Using Enhanced Tacholess Order Tracking

Ismail, Mohamed A.A. and Sawalhi, Nader and Bierig, Andreas (2018) Fault Diagnosis of Wind Turbine Gearboxes Using Enhanced Tacholess Order Tracking. International Conference of Applied Physics and Mathematics (ICAPM2018), 30.-31. Jan. 2018, Kuwait.

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Abstract

Health monitoring of wind turbines is crucial to support their sustainability and economic operation. Gearbox failures contribute significantly to the cost of wind turbine maintenance. These failures are typically monitored by Vibration sensors attached to external housing. Non-stationary vibration is induced by the variable-speed operation of the wind turbine. In this paper, a new technique is introduced to enable the extraction of a speed reference from the vibration signal, which can be utilized to remove speed fluctuations and diagnose faults in the gearbox. High speed variations of the shaft, i.e., tacho signal, have been extracted from the vibration signal of an accelerometer mounted on the casing of the gearbox. The epicyclic mesh frequency has been used to construct the speed reference by an enhanced order tracking technique comprising auto-adjustable phase demodulation (APD). APD is aimed at improving fault detection efficiency by accommodating high speed fluctuations. The effectiveness of the proposed APD performance has been successfully demonstrated by using vibration measurements from commercial in-service wind turbines.

Item URL in elib:https://elib.dlr.de/118735/
Document Type:Conference or Workshop Item (Speech)
Title:Fault Diagnosis of Wind Turbine Gearboxes Using Enhanced Tacholess Order Tracking
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ismail, Mohamed A.A.Mohamed.Ismail (at) dlr.deUNSPECIFIED
Sawalhi, Nadernadersaw (at) hotmail.comUNSPECIFIED
Bierig, AndreasAndreas.Bierig (at) dlr.deUNSPECIFIED
Date:31 January 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Computed order tracking, phase demodulation, planetary gearbox, non-stationary vibration
Event Title:International Conference of Applied Physics and Mathematics (ICAPM2018)
Event Location:Kuwait
Event Type:international Conference
Event Dates:30.-31. Jan. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Safety Critical Systems&Systems Engineering
Deposited By: Ismail, Dr. Mohamed AA
Deposited On:05 Feb 2018 12:06
Last Modified:13 Jan 2021 09:17

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