Articles | Volume 8, issue 1
https://doi.org/10.5194/jsss-8-149-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/jsss-8-149-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Review paper
| 
17 Apr 2019
Review paper |
| 17 Apr 2019
| 17 Apr 2019
Calibration of torque measurement under constant rotation in a wind turbine test bench
Paula Weidinger
CORRESPONDING AUTHOR
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
Gisa Foyer
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
Stefan Kock
RWTH Aachen, Chair for Wind Power Drives, Campus-Boulevard 61, 52074 Aachen, Germany
Jonas Gnauert
RWTH Aachen, Chair for Wind Power Drives, Campus-Boulevard 61, 52074 Aachen, Germany
Rolf Kumme
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
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This paper examines global initiatives for energy-efficient wind turbines, exploring new approaches based on international standards. The conclusion underlines the urgency of transitioning to clean energy, highlighting the iso-efficiency map's potential for validating total efficiency. Encouraging standardized testing, research addresses challenges in testing energy-efficient machines, emphasizing precise measurements.
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This paper examines global initiatives for energy-efficient wind turbines, exploring new approaches based on international standards. The conclusion underlines the urgency of transitioning to clean energy, highlighting the iso-efficiency map's potential for validating total efficiency. Encouraging standardized testing, research addresses challenges in testing energy-efficient machines, emphasizing precise measurements.
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This paper covers the design study of a multicomponent transducer (MCT) for wind turbine test benches. The MCT will cover the characteristics of wind turbines in the power range of up to 6 MW. The motivation to develop a MCT such as this is to provide satisfying measurement accuracy of loads and moments for all 6 degrees of freedom in order to reduce the uncertainty in the traceability of the drive train behavior due to the applied loads.
Jan Nitsche, Rolf Kumme, and Rainer Tutsch
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Multi-component sensors for force and moment are commonly used in different areas as robotics, crash tests or material testing. The dynamic behaviour of such sensors may differ significantly from the static behaviour. To analyse the dynamic characteristics, we developed an improved test set-up for periodic excitation. It consists of an electrodynamic shaker, adapting elements and different acceleration references. The first experiments show good results for periodic excitation up to 1000 Hz.
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“Industrie 4.0” or the Industrial Internet of Things (IIoT) describe the current (r)evolution in industrial automation and control. This is fundamentally based on smart sensors, which generate data and allow further functionality from self-monitoring and self-configuration to condition monitoring of complex processes. The paper reviews the development of sensor technology over the last 2 centuries and highlights some of the potential that can be achieved with smart sensors and data analysis.
Enrico Mohns and Peter Räther
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Silke Augustin, Thomas Fröhlich, Marc Schalles, and Stefan Krummeck
J. Sens. Sens. Syst., 7, 331–337, https://doi.org/10.5194/jsss-7-331-2018, https://doi.org/10.5194/jsss-7-331-2018, 2018
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Gunter Hagen, Antonia Harsch, and Ralf Moos
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Monitoring hydrocarbon concentrations in automotive exhausts is affected by flow rate changes. The signal of thermoelectric gas sensors is a thermovoltage. Its origin is a temperature difference that depends on the flow rate. To avoid this noise effect, the sensor can be installed in a defined bypass position. As shown by simulation and experiments, the gas flow around the sensor is almost turbulence-free and the signal only depends on the hydrocarbon concentration and not on the flow rate.
Marc Fischer, Marcus Petz, and Rainer Tutsch
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For optical measurement systems, camera noise is the dominant uncertainty factor when optically cooperative surfaces are measured in a stable environment. In this work it will be shown that the resulting spatial noise can be estimated by means of a noise model. The capability of this approach will be demonstrated for a fringe projection system. This provides a valuable tool for a statistical comparison of different evaluation strategies, which is shown for two different triangulation procedures.
Sascha Eichstädt, Clemens Elster, Ian M. Smith, and Trevor J. Esward
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PyDynamic.
M. P. Henry, M. S. Tombs, and F. B. Zhou
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Cited articles
Baumgarten, S., Röske, D., and Kumme, R.: Crosstalk characteristic of a new
compression-torsion sensor for multicomponent measurements, in: 22nd
IMEKO TC3, 15th TC5 and 3rd TC22, TC3, TC5 and TC22 International Conference,
1–5, 2014. a
Brüge, A.: Influence of rotation on rotary torque transducers calibrated
without rotation, in: 14th IMEKO World Congress, vol. 14th of World
Congress, 1997. a
Brüge, A. and Pfeiffer, H.: A standard for rotatory power measurement, in
preparation, 2019. a
Foyer, G. and Kock, S.: Measurement uncertainty evaluation of torque
measurement in nacelle test benches, in: 23rd IMEKO TC3, 13th TC5 and 4th
TC22: International Conference, TC3, TC5 and TC22 International Conference,
2017. a
FVA: Belastungen an den Antriebskomponenten von Windenergieanlagen, available
at: https://www.cwd.rwth-aachen.de/projekte/fva-gondel/, last access:
22 February 2018. a
Germanischer Lloyd: Guideline for the Certification of Wind Turbines,
available at:
https://3989ac5bcbe1edfc864a-0a7f10f87519dba22d2dbc6233a731e5.ssl.cf2.rackcdn.com/acecmn/pdf-s/Session_3_-_Handout_3_-_GL_Guideline_for_the_Certification_of_Wind_Turbines.pdf
(last access: 1 August 2017), 2010. a
Kock, S., Bosse, D., Eich, N., Foyer, G., Medina, N., Quintanilla Crespo,
J. M., Vavrečka, L., and Ala-Hiiro, J.: Deliverable D1: Report on
existing nacelle test benches and their boundary conditions, including the
range of loads that can be applied and the dimensions of the test bench, as
well as existing methods of torque measurement and calibration and the levels
of uncertainty achieved, Internal project report, EURAMET, 2016. a
Lietz, S., Tegtmeier, F., Kumme, R., Röske, D., Kolwinski, U., and
Zöller, K.: A new six-component force vector sensor - forst
investigations, in: 20th IMEKO TC3, 3rd TC16 and 1st TC22: International
Conference, TC3, TC16 and TC22 International Conference, 1–9, 2007. a
Pagitsch, M., Jacobs, G., Schelenz, R., Bosse, D., Liewen, C., Reisch, S., and
Deicke, M.: Feasibility of large-scale calorimetric efficiency measurement
for wind turbine generator drivetrains, J. Phys. Conf.
Ser., 753, 72011, https://doi.org/10.1088/1742-6596/753/7/072011, 2016. a
Peschel, D., Mauersberger, D., Schwind, D., and Kolwinski, U.: The new 1.1
MN ⋅ m torque standard machine of the PTB Braunschweig/ Germany, in: 19th
IMEKO TC3: TC3 International Conference on Force, Mass and Torque, TC3
International Conference on Force, Mass and Torque, Cairo, Egypt, 19–25 February, 2005. a
Röske, D.: Messunsicherheiten bei der Drehmomentmessung mit
Referenzmesseinrichtungen, Tech. Mess., 78, 77–87,
https://doi.org/10.1524/teme.2011.0095, 2011. a
Weidinger, P. and Foyer, G.: Traceable Torque Measurement under Rotation in
Nacelle Test Benches: A Good Practice Guide, Physikalisch-Technische
Bundesanstalt (PTB), https://doi.org/10.7795/530.20190111, 2019. a
Weidinger, P., Schlegel, C., Foyer, G., and Kumme, R.: Characterisation of a 5
MN ⋅ m Torque Transducer by Combining Traditional Calibration and Finite
Element Method Simulations, in: AMA Conferences 2017, AMA Service GmbH, 516–521, https://doi.org/10.5162/sensor2017/D6.2, 2017. a
Weidinger, P., Foyer, G., Kock, S., Gnauert, J., and Kumme, R.: Development of
a torque calibration procedure under rotation for nacelle test benches,
J. Phys. Conf. Ser., 1037, 52030,
https://doi.org/10.1088/1742-6596/1037/5/052030, 2018a.
a, b, c, d
Weidinger, P., Foyer, G., Kock, S., Gnauert, J., and Kumme, R.: Procedure for
torque calibration under constant rotation investigated on a nacelle test
bench, in: Sensoren und Messsysteme 2018, VDE Verlag, 32–335, 2018b.
Weidinger, P., Foyer, G., Ala-Hiiro, J., Schlegel, C., and Kumme, R.:
Investigations towards extrapolation approaches for torque transducer
characteristics, J. Phys. Conf. Ser., 1065, 042057,
https://doi.org/10.1088/1742-6596/1065/4/042057, 2018c. a
Weidinger, P., Foyer, G., Kock, S., Gnauert, J., and Kumme, R.: Data set for
the calibration of torque measurement under constant rotation in a wind
turbine test bench, Physikalisch-Technische Bundesanstalt (PTB),
https://doi.org/10.7795/720.20190411, 2019. a
Zhang, H. and Neshati, M.: An effective method of determining the drive-train
effciency of wind turbines with high accuracy, J. Phys. Conf.
Ser., 1037, 52013, https://doi.org/10.1088/1742-6596/1037/5/052013, 2018. a
Short summary
To determine the efficiency of multi-MW wind turbines, the torque measurement in wind turbine test benches has to be performed with a high accuracy. To this end, the torque measurement has to be traced to national standards. This can be done by using a novel torque transfer standard in combination with a newly developed torque calibration procedure under constant rotation. The calibration procedure was performed on a wind turbine test bench.
To determine the efficiency of multi-MW wind turbines, the torque measurement in wind turbine...
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