Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
권호 표지

A Study on Thrust Variation Based on the BEM Method for an Onshore 2 MW Wind Turbine under Wind Shear

BEM 방법을 적용한 2MW 육상용 풍력터빈의 윈드 쉬어 추력 변동 고찰

  • 임채욱 (한밭대학교 기계공학과)
  • Received : 2018.04.17
  • Accepted : 2018.05.28
  • Published : 2018.06.30

⟨ Previous Next ⟩

Abstract

Multi-MW wind turbines have very long and large blades. There are some factors that exert asymmetric dynamic thrusts on a blade. Wind shear is one of the main factors that produce asymmetric dynamic loads on a blade of a multi-MW wind turbine. In this paper, a 2 MW on-shore wind turbine that has three blades with a rotor radius of 40 m and hub height of 60 m is considered and thrust variations on a blade under wind shear are calculated according to the wind speed. The commercial software GH Bladed is used for calculating thrust variations based on the blade element momentum (BEM) method. And the amplitudes of the thrust variations by wind shear with varying wind speed are investigated by introducing a "wind shear coefficient of thrust variation" based on the steady-state value of thrust without wind shear.

Keywords

Acknowledgement

Supported by : 한밭대학교

References

  1. Yaramasu, V., Wu, B., Sen, P. C., Kouro, S., and Narimani, M., 2015, "High-Power Wind Energy Conversion Systems: State-of-the-Art and Emerging Technologies," Proceedings of the IEEE, Vol. 103, No. 5, pp. 740-788. https://doi.org/10.1109/JPROC.2014.2378692
  2. Kaldellis, J. K. and Zafirakis, D., 2011, "The Wind Energy (R)Evolution: A Short Review of a Long History," Renewable Energy, Vol. 36, No. 7, pp. 1887-1901. https://doi.org/10.1016/j.renene.2011.01.002
  3. Maria, I. B., 2009, "The Economics of Wind Energy," Renewable and Sustainable Energy Reviews, Vol. 13, No. 6-7, pp. 1372-1382. https://doi.org/10.1016/j.rser.2008.09.004
  4. Vestas, 2018, Turbine specifications are available online: http://www.vestas.com/.
  5. Burton, T., Jenkins, N., Sharpe, D., and Bossanyi E., 2011, Wind Energy Handbook, Second edition, John Wiley & Sons, Ltd..
  6. Manwell, J. F., Mcgowan, J. G., and Rogers, A. L., 2009, Wind Energy Explained: Theory, Design and Application, Second Edition, John Wiley & Sons, Ltd.
  7. Bianchi, F. D., Battista, H. D., and Mantz, R. J., 2007, Wind Turbine Control Systems: Principles, Modelling and Gain Scheduling Design, Springer-Verlag.
  8. Kim, J., Kang, S. H., and Ryu K. W., 2016, "Comparison of Aerodynamic Loads for Horizontal Axis Wind Turbine (I): with and without Turbulence Inflow," Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 44, No. 5, pp. 391-398. https://doi.org/10.5139/JKSAS.2016.44.5.391
  9. Kim, J., Kang, S. H. and Ryu K. W., 2016, "Comparison of Aerodynamic Loads for Horizontal Axis Wind Turbine (II): with and without Vertical Wind Shear Effect," Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 44, No. 5, pp. 399-406. https://doi.org/10.5139/JKSAS.2016.44.5.399
  10. IEC, 2005, Wind Turbine Part I: Design Requirements, Normal Turbulence Model, IEC 61400-1 Standard, 3rd Edition.
  11. Lim, C. W., 2016, "An Investigation on Thrust Properties under Wind Shear for an On-Shore 2MW Wind Turbine," The KSFM Journal of Fluid Machinery, Vol. 19, No. 6, pp. 14-18. https://doi.org/10.5293/kfma.2016.19.6.014
  12. Bossanyi, E. A., 2003, "Individual Blade Pitch Control for Load Reduction," Wind Energy, Vol. 6, No. 2, pp. 119-128. https://doi.org/10.1002/we.76
  13. Selvam, K., Kanev, S., van Wingerden, J. W., and van Engelen, T., 2009, "Feedback-Feedforward Individual Pitch Control for Wind Turbine Load Reduction," International Journal of Robust and Nonlinear Control, Vol. 19, No. 1, pp. 72-91. https://doi.org/10.1002/rnc.1324
  14. Lim, C. W., 2016 "Evaluation of Dynamic Thrust under Wind Shear in Wind Turbine below Rated Wind Speed," Transactions on Korean Society of Mechanical Engineers A, Vol. 40, No. 4, pp. 407-414. https://doi.org/10.3795/KSME-A.2016.40.4.407
  15. Bossanyi, E. A., 2009, GH Bladed Version 3.82 User Manual.
  16. Lim, C. W., 2017 "Investigation of Bandwidth of Pitch Actuator and Output Power Response for Multi-MW Wind Turbine," Journal of Wind Energy, Vol. 8, No. 2, pp. 31-38.
  17. Kim, J. H., Moon, S. J., Shin, Y. H., and Won, M. C., 2013 "Wind Turbine Performance for Eigen Value Change of Closed-Loop System for PI-Controller," Journal of Wind Energy, Vol. 4, No. 2, pp. 17-24.