Wind Turbine Main Bearing Fatigue Life Estimation with Physics-informed Neural Networks

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Published Sep 22, 2019
Yigit Anil Yucesan Felipe A. C. Viana

Abstract

Unexpected main bearing failure on a wind turbine causes unwanted maintenance and increased operation costs (mainly due to crane, parts, labor, and production loss). Unfortunately, historical data indicates that failure can happen far earlier than the design lives of the component. Root cause analysis investigations have pointed to problems inherent from manufacturing as the major contributor, as well as issues related to event loads (e.g., startups, shutdowns, and emergency stops), extreme environmental conditions, and maintenance practices, among others. Altogether, the multiple failure modes and contributors make modeling remaining useful life of main bearings a very daunting task. In this paper, we present a novel physics-informed neural network modeling approach for main bearing fatigue. The proposed approach is fully hybrid and designed to merge physics- informed and data-driven layers within deep neural networks. The result is a cumulative damage model where the physics-informed layers are used model the relatively well-understood physics (L10 fatigue life) and the data-driven layers account for the hard to model components (e.g., contribution due to poor greasing conditions).

How to Cite

Yucesan, Y. A., & Viana, F. A. C. (2019). Wind Turbine Main Bearing Fatigue Life Estimation with Physics-informed Neural Networks. Annual Conference of the PHM Society, 11(1). https://doi.org/10.36001/phmconf.2019.v11i1.807
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Keywords

Physics-informed Neural Networks, Wind Turbine, Machine Learning

Section
Technical Papers