Morin, Nicolas, Dollon, Quentin, Antoni, Jérôme, Tahan, Antoine, Monette, Christine et Gagnon, Martin.
2024.
« Harmonic modal analysis of hydroelectric runner in steady-state conditions: a Bayesian approach ».
Mechanics and Industry, vol. 25.
Prévisualisation |
PDF
Tahan-A-2024-29788.pdf - Version publiée Licence d'utilisation : Creative Commons CC BY. Télécharger (1MB) | Prévisualisation |
Résumé
The characterization of hydroelectric turbine runners’ dynamic behaviour is essential for accurate stress and fatigue life prediction leading to design and maintenance adapted to the fluctuating power demand. As the modal parameters of runners depend on the operating regime and coupling effects, a representative estimation of these parameters relies on the analysis of in-operation data. However, harmonics contained in Francis runners strain response complexify the use of traditional operational modal analysis methods. This paper proposes a steady-state harmonic modal analysis method using Non-Trivial Rotor-Casing Interactions (NTRCI). The Bayesian method used to identify the parameters is first presented. Then the method is evaluated on a ground truth system obtained with an analytically generated strain response and then deployed on operating runner strain gauge measurements. The paper concludes with a discussion and future works related to the exhaustivity of the proposed model and additional signal processing needs.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur Tahan, Antoine |
| Affiliation: | Génie mécanique |
| Date de dépôt: | 05 nov. 2024 19:40 |
| Dernière modification: | 07 nov. 2024 20:17 |
| URI: | https://espace2.etsmtl.ca/id/eprint/29788 |
Actions (Authentification requise)
 |
Dernière vérification avant le dépôt |