Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test bench
<p>Wind energy has witnessed a staggering development race, resulting in higher torque density demands for the drivetrain in general and the gearbox in particular. Accurate knowledge of the input torque and suitable models are essential to ensure reliability, but neither of them is currently a...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2025-01-01
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| Series: | Wind Energy Science |
| Online Access: | https://wes.copernicus.org/articles/10/207/2025/wes-10-207-2025.pdf |
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| author | U. Gutierrez Santiago U. Gutierrez Santiago A. A. W. van Vondelen A. Fernández Sisón H. Polinder J.-W. van Wingerden |
| author_facet | U. Gutierrez Santiago U. Gutierrez Santiago A. A. W. van Vondelen A. Fernández Sisón H. Polinder J.-W. van Wingerden |
| author_sort | U. Gutierrez Santiago |
| collection | DOAJ |
| description | <p>Wind energy has witnessed a staggering development race, resulting in higher torque density demands for the drivetrain in general and the gearbox in particular. Accurate knowledge of the input torque and suitable models are essential to ensure reliability, but neither of them is currently available in commercial wind turbines. The present study explores how a subspace identification algorithm can be applied to fiber-optic strain sensors on a four-stage gearbox to obtain operational deflection shapes. An innovative measurement setup with 129 fiber-optic strain sensors has been installed on the outer surface of the ring gears to research the deformations caused by planet gear passage events. Operational deflection shapes have been identified by applying the multivariable output-error state space (MOESP) subspace identification method to strain signals measured on a serial production end-of-line test bench. These operational deflection shapes, driven by periodic excitations, account for almost all the energy in the measured strain signals. Their contribution is controlled by the torque applied to the gearbox. From this contribution, a torque estimate for dynamic operating conditions has been derived. Accurate knowledge of the input torque throughout the entire service life allows for future improvements in assessing the remaining useful life of wind turbine gearboxes.</p> |
| format | Article |
| id | doaj-art-daf1a39ed4cc45ed962c8963cc75c3bf |
| institution | Kabale University |
| issn | 2366-7443 2366-7451 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Wind Energy Science |
| spelling | doaj-art-daf1a39ed4cc45ed962c8963cc75c3bf2025-01-22T11:35:12ZengCopernicus PublicationsWind Energy Science2366-74432366-74512025-01-011020722510.5194/wes-10-207-2025Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test benchU. Gutierrez Santiago0U. Gutierrez Santiago1A. A. W. van Vondelen2A. Fernández Sisón3H. Polinder4J.-W. van Wingerden5Faculty of Mechanical Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, the NetherlandsSiemens Gamesa Renewable Energy, Parque Tecnológico de Bizkaia, 48170 Zamudio, SpainFaculty of Mechanical Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, the NetherlandsSiemens Gamesa Renewable Energy, Parque Tecnológico de Bizkaia, 48170 Zamudio, SpainFaculty of Mechanical Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, the NetherlandsFaculty of Mechanical Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, the Netherlands<p>Wind energy has witnessed a staggering development race, resulting in higher torque density demands for the drivetrain in general and the gearbox in particular. Accurate knowledge of the input torque and suitable models are essential to ensure reliability, but neither of them is currently available in commercial wind turbines. The present study explores how a subspace identification algorithm can be applied to fiber-optic strain sensors on a four-stage gearbox to obtain operational deflection shapes. An innovative measurement setup with 129 fiber-optic strain sensors has been installed on the outer surface of the ring gears to research the deformations caused by planet gear passage events. Operational deflection shapes have been identified by applying the multivariable output-error state space (MOESP) subspace identification method to strain signals measured on a serial production end-of-line test bench. These operational deflection shapes, driven by periodic excitations, account for almost all the energy in the measured strain signals. Their contribution is controlled by the torque applied to the gearbox. From this contribution, a torque estimate for dynamic operating conditions has been derived. Accurate knowledge of the input torque throughout the entire service life allows for future improvements in assessing the remaining useful life of wind turbine gearboxes.</p>https://wes.copernicus.org/articles/10/207/2025/wes-10-207-2025.pdf |
| spellingShingle | U. Gutierrez Santiago U. Gutierrez Santiago A. A. W. van Vondelen A. Fernández Sisón H. Polinder J.-W. van Wingerden Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test bench Wind Energy Science |
| title | Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test bench |
| title_full | Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test bench |
| title_fullStr | Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test bench |
| title_full_unstemmed | Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test bench |
| title_short | Identification of operational deflection shapes of a wind turbine gearbox using fiber-optic strain sensors on a serial production end-of-line test bench |
| title_sort | identification of operational deflection shapes of a wind turbine gearbox using fiber optic strain sensors on a serial production end of line test bench |
| url | https://wes.copernicus.org/articles/10/207/2025/wes-10-207-2025.pdf |
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