Online calibration of accelerometers for monitoring of wind turbine blade movement

Theresa Loss, Oliver Gerler, Alexander Bergmann

    Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

    Abstract

    Measuring acceleration at the blade tips of wind turbines is a promising approach in structural health monitoring for tracking blade movement and consequently reducing blade loads. Online calibration of accelerometers is crucial in identifying any changes in sensor properties introduced during mounting or by sensor aging. Acceleration due to gravity during steady states of the sensor can be used as a reference level for calibration.In our approach, steady states during standstills of the turbine were identified and static offset and cross-axis sensitivity were calibrated for an exemplary accelerometer. A simulation of sensor orientations during steady states demonstrated that diversely distributed orientations result in smaller calibration errors.Algorithms were tested with real data of sensors mounted on wind turbine blades. Results showed that identification of steady states is challenging due to low frequency vibrations of the blade. Nevertheless, calibration significantly reduced the error in measurements, thereby increasing accuracy in monitoring applications. Finally, the benefit of calibration was demonstrated by means of two applications in wind turbine engineering.

    Original languageEnglish
    Title of host publicationI2MTC 2020 - International Instrumentation and Measurement Technology Conference, Proceedings
    PublisherInstitute of Electrical and Electronics Engineers
    Number of pages6
    ISBN (Electronic)9781728144603
    DOIs
    Publication statusPublished - May 2020
    Event2020 IEEE International Instrumentation and Measurement Technology Conference: IEEE I2MTC 2020 - Virtuell, Dubrovnik, Croatia
    Duration: 25 May 202028 May 2020
    https://i2mtc2020.ieee-ims.org/

    Conference

    Conference2020 IEEE International Instrumentation and Measurement Technology Conference
    Abbreviated titleIEEE I2MTC 2020
    CountryCroatia
    CityVirtuell, Dubrovnik
    Period25/05/2028/05/20
    Internet address

    Keywords

    • Accelerometers
    • Blade monitoring
    • Harsh environments
    • Online calibration

    ASJC Scopus subject areas

    • Safety, Risk, Reliability and Quality
    • Instrumentation

    Fingerprint

    Dive into the research topics of 'Online calibration of accelerometers for monitoring of wind turbine blade movement'. Together they form a unique fingerprint.

    Cite this