An Accurate Three-Dimensional Deformation Measurement Method in Wind Turbine Blade Static Loading Test

Yongfeng Yu

《International Core Journal of Engineering》 7卷1期 (2021/01) Pp. 25-33

https://doi.org/10.6919/ICJE.202101_7(1).0004

摘要

The accurate deflection measurement of wind turbine blade is one of the key step in its full-scale static loading test. In order to measure the blade deflection accurately in the three-dimensional space, an effective spatial displacement measurement mathematical model has been established on the basis of geometric transformation method. At the same time, the finite element method is used to calculate the change of the blade deflection under the static loading force. Based on the above three-dimensional deflection measurement model, corresponding data measurement system was development. In the end, the three-dimensional measurement method was applied to wind turbine blade static test for blade tip measurement. The test results show that the maximum error rate of the three directions is only 4.1%, 3.8% and 4.3%, compared with the results of theoretical calculation, which has a very broad engineering application prospect.

關鍵字

Measurement methods ； Mathematical model ； Three-dimensional deformation ； Wind turbine blade ； Static loading test

參考文獻

Chen, X., Zhao, W., Zhao, X. L., & Xu, J. Z. (2014). Failure test and finite element simulation of a large wind turbine composite blade under static loading. Energies, 7(4), 2274-2297.

Kong, C., Bang, J., & Sugiyama, Y. (2005). Structural investigation of composite wind turbine blade considering various load cases and fatigue life. Energy, 30(11-12), 2101-2114.

Lee, H. G., Kang, M. G., & Park, J. (2015). Fatigue failure of a composite wind turbine blade at its root end. Composite Structures, 133, 878-885.

FERNÁNDEZ R, B. E. N. I. T. O., & Hedrick, J. K. (1987). Control of multivariable non-linear systems by the sliding mode method. International Journal of Control, 46(3), 1019-1040.

Hua, M., Hu, H., Xing, Y., & He, Z. (2011). Distributed control for AC motor drive inverters in parallel operation. IEEE Transactions on Industrial Electronics, 58(12), 5361-5370.