Details
| Original language | English |
|---|---|
| Pages (from-to) | 1048-1062 |
| Number of pages | 15 |
| Journal | WIND ENERGY |
| Volume | 23 |
| Issue number | 4 |
| Early online date | 13 Mar 2020 |
| Publication status | Published - 1 Apr 2020 |
Abstract
The mechanical torque input into the wind turbine drive train is a very useful measurement for tests performed on a test bench. To ensure the accuracy and the reliability, an accurate calibration of the torque measurement must be carried out and repeated within a certain period of time. However, owing to the high torque level and large structure size, such a calibration is both expensive and time consuming. To overcome this challenge, a new calibration method is proposed here. The method is based on the electrical power measurement, where a high level of accuracy is much easier to achieve. With the help of a special test process, a relationship between the torque-measuring signal and the electrical power can be established. The process comprises two tests with the drive train running in different operating modes. The calibration is possible by carrying out the same test process on several different torque levels. Detailed uncertainty analysis of the method is presented, whereby the uncertainty can be calculated by means of matrix operation and also numerically. As a demonstration, the implementation of the method on a test bench drive train that contains two 5-MW motors in tandem with the motors operating in a back-to-back configuration is also presented. Finally, some variations on the method and possible ways of achieving better accuracy are discussed.
Keywords
- drive train, efficiency, test bench, torque calibration, torque measurement, wind turbine
ASJC Scopus subject areas
Sustainable Development Goals
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In: WIND ENERGY, Vol. 23, No. 4, 01.04.2020, p. 1048-1062.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Proposals for a practical calibration method for mechanical torque measurement on the wind turbine drive train under test on a test bench
AU - Zhang, Hongkun
AU - Wenske, Jan
AU - Reuter, Andreas
AU - Neshati, Mohsen
PY - 2020/4/1
Y1 - 2020/4/1
N2 - The mechanical torque input into the wind turbine drive train is a very useful measurement for tests performed on a test bench. To ensure the accuracy and the reliability, an accurate calibration of the torque measurement must be carried out and repeated within a certain period of time. However, owing to the high torque level and large structure size, such a calibration is both expensive and time consuming. To overcome this challenge, a new calibration method is proposed here. The method is based on the electrical power measurement, where a high level of accuracy is much easier to achieve. With the help of a special test process, a relationship between the torque-measuring signal and the electrical power can be established. The process comprises two tests with the drive train running in different operating modes. The calibration is possible by carrying out the same test process on several different torque levels. Detailed uncertainty analysis of the method is presented, whereby the uncertainty can be calculated by means of matrix operation and also numerically. As a demonstration, the implementation of the method on a test bench drive train that contains two 5-MW motors in tandem with the motors operating in a back-to-back configuration is also presented. Finally, some variations on the method and possible ways of achieving better accuracy are discussed.
AB - The mechanical torque input into the wind turbine drive train is a very useful measurement for tests performed on a test bench. To ensure the accuracy and the reliability, an accurate calibration of the torque measurement must be carried out and repeated within a certain period of time. However, owing to the high torque level and large structure size, such a calibration is both expensive and time consuming. To overcome this challenge, a new calibration method is proposed here. The method is based on the electrical power measurement, where a high level of accuracy is much easier to achieve. With the help of a special test process, a relationship between the torque-measuring signal and the electrical power can be established. The process comprises two tests with the drive train running in different operating modes. The calibration is possible by carrying out the same test process on several different torque levels. Detailed uncertainty analysis of the method is presented, whereby the uncertainty can be calculated by means of matrix operation and also numerically. As a demonstration, the implementation of the method on a test bench drive train that contains two 5-MW motors in tandem with the motors operating in a back-to-back configuration is also presented. Finally, some variations on the method and possible ways of achieving better accuracy are discussed.
KW - drive train
KW - efficiency
KW - test bench
KW - torque calibration
KW - torque measurement
KW - wind turbine
UR - http://www.scopus.com/inward/record.url?scp=85078662529&partnerID=8YFLogxK
U2 - 10.1002/we.2472
DO - 10.1002/we.2472
M3 - Article
AN - SCOPUS:85078662529
VL - 23
SP - 1048
EP - 1062
JO - WIND ENERGY
JF - WIND ENERGY
SN - 1095-4244
IS - 4
ER -