5.1.3 Torque calibration in the MN m range under rotation in a nacelle test bench
- Event
- 20. GMA/ITG-Fachtagung Sensoren und Messsysteme 2019
2019-06-25 - 2019-06-26
Nürnberg, Germany - Chapter
- 5.1 Werkstoffprüfung und -charakterisierung 2
- Author(s)
- P. Weidinger, G. Foyer, R. Kumme - Physikalisch-Technische Bundesanstalt, Braunschweig (Deutschland), S. Kock, J. Gnauert - RWTH Aachen Universität (Deutschland)
- Pages
- 398 - 405
- DOI
- 10.5162/sensoren2019/5.1.3
- ISBN
- 978-3-9819376-0-2
- Price
- free
Abstract
Mechanical torque M is the most important parameter for the power transmission of wind turbines in general and on nacelle test benches. However, torque measurement in nacelle test benches is not yet traceable to national standards, consequently neither its precision nor its measurement uncertainty is known. To rectify this, a calibration method for torque measurement under varying rotational speed n using a torque transfer standard was developed. The result of this calibration procedure is the relative indication deviation ̅q(ML) between the torque measuring device in the nacelle test bench and the torque transfer standard, which amounts to about 4.3 %, and the associated expanded measurement uncertainty of less than 0.26 %.