Analysis of pitch system data for condition monitoring

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

7 Citationer (Scopus)

Resumé

Measurements of pitch motor torque and current give indirect information about the condition of the pitch system and can therefore potentially be used for condition-based maintenance. This paper presents an analysis of these measurements for a wind turbine, and the measurements are compared with a theoretical model based on aeroelastic simulations. The blade moment is found to have only minor influence on the friction in the blade bearing. The main factors affecting the static friction are the temperature and time after the latest pitch movement. Pitch motor current and torque are proportional at a constant pitch velocity, but the 10 min maximum values are only approximately proportional, because the maximum values occur during acceleration and not simultaneously. These findings are important to consider, if using the pitch motor current or torque as an indicator for the pitch system health is considered.
OriginalsprogEngelsk
TidsskriftWind Energy
Vol/bind17
Udgave nummer3
Sider (fra-til)435–449
Antal sider15
ISSN1095-4244
DOI
StatusUdgivet - 2014

Fingerprint

Condition monitoring
Bearings (structural)
Torque
Friction
Torque motors
Wind turbines
Health
Temperature

Emneord

  • Pitch System
  • Indicators
  • Operation and Maintenance
  • Condition Monitoring
  • Wind Turbines

Citer dette

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title = "Analysis of pitch system data for condition monitoring",
abstract = "Measurements of pitch motor torque and current give indirect information about the condition of the pitch system and can therefore potentially be used for condition-based maintenance. This paper presents an analysis of these measurements for a wind turbine, and the measurements are compared with a theoretical model based on aeroelastic simulations. The blade moment is found to have only minor influence on the friction in the blade bearing. The main factors affecting the static friction are the temperature and time after the latest pitch movement. Pitch motor current and torque are proportional at a constant pitch velocity, but the 10 min maximum values are only approximately proportional, because the maximum values occur during acceleration and not simultaneously. These findings are important to consider, if using the pitch motor current or torque as an indicator for the pitch system health is considered.",
keywords = "Pitch System, Indicators, Operation and Maintenance, Condition Monitoring, Wind Turbines, Pitch System, Indicators, Operation and Maintenance, Condition Monitoring, Wind turbines",
author = "Nielsen, {Jannie S{\o}nderk{\ae}r} and {van de Pieterman}, {Ren{\'e} P.} and S{\o}rensen, {John Dalsgaard}",
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Analysis of pitch system data for condition monitoring. / Nielsen, Jannie Sønderkær; van de Pieterman, René P.; Sørensen, John Dalsgaard.

I: Wind Energy, Bind 17, Nr. 3, 2014, s. 435–449.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Analysis of pitch system data for condition monitoring

AU - Nielsen, Jannie Sønderkær

AU - van de Pieterman, René P.

AU - Sørensen, John Dalsgaard

PY - 2014

Y1 - 2014

N2 - Measurements of pitch motor torque and current give indirect information about the condition of the pitch system and can therefore potentially be used for condition-based maintenance. This paper presents an analysis of these measurements for a wind turbine, and the measurements are compared with a theoretical model based on aeroelastic simulations. The blade moment is found to have only minor influence on the friction in the blade bearing. The main factors affecting the static friction are the temperature and time after the latest pitch movement. Pitch motor current and torque are proportional at a constant pitch velocity, but the 10 min maximum values are only approximately proportional, because the maximum values occur during acceleration and not simultaneously. These findings are important to consider, if using the pitch motor current or torque as an indicator for the pitch system health is considered.

AB - Measurements of pitch motor torque and current give indirect information about the condition of the pitch system and can therefore potentially be used for condition-based maintenance. This paper presents an analysis of these measurements for a wind turbine, and the measurements are compared with a theoretical model based on aeroelastic simulations. The blade moment is found to have only minor influence on the friction in the blade bearing. The main factors affecting the static friction are the temperature and time after the latest pitch movement. Pitch motor current and torque are proportional at a constant pitch velocity, but the 10 min maximum values are only approximately proportional, because the maximum values occur during acceleration and not simultaneously. These findings are important to consider, if using the pitch motor current or torque as an indicator for the pitch system health is considered.

KW - Pitch System

KW - Indicators

KW - Operation and Maintenance

KW - Condition Monitoring

KW - Wind Turbines

KW - Pitch System

KW - Indicators

KW - Operation and Maintenance

KW - Condition Monitoring

KW - Wind turbines

U2 - 10.1002/we.1586

DO - 10.1002/we.1586

M3 - Journal article

VL - 17

SP - 435

EP - 449

JO - Wind Energy

JF - Wind Energy

SN - 1095-4244

IS - 3

ER -