Case Study of a Faulted Planet Bearing

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Eric Bechhoefer Dave He

Abstract

Fault detection in planet bearings is difficult. This is particularly true in wind turbines, where the main rotor shaft is under 20 rpm, such that the planet fault frequency can be sub 1 Hz. This papers analyzes a missed fault on a wind turbine planet bearing, and discuses how changes in the analysis configuration then allowed this type of fault to be detected. Raw data from ten machines was collected. From this, a strategy for fault feature identification was developed, to include: the evaluation of window selection, biasing of the data set with faulted components, and the use of improve analysis techniques. This allowed meaningful and appropriate thresholds to be set.

How to Cite

Bechhoefer, E., & He, D. (2016). Case Study of a Faulted Planet Bearing. Annual Conference of the PHM Society, 8(1). https://doi.org/10.36001/phmconf.2016.v8i1.2567
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Keywords

condition monitoring, Bearing Analysis, Resampling, threshold setting

References
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Section
Technical Papers

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