Vibration Signals of Small Vertical Axis Wind Turbines

In recent years, progress has been made in increasing the renewable energy share in the power sector particularly in the wind. The experimental study conducted in this paper aims to investigate the effects of number of blades and inflow wind speed on vibration signals of a vertical axis Savonius type wind turbine. The operation of the model of Savonius type wind turbine is conducted to compare two, three and four blades wind turbines to show vibration amplitudes related with wind speed. It is found that the increase of the number of blades leads to decrease of the vibration magnitude. Furthermore, inflow wind speed has reduced effect on the vibration level for higher number of blades.





References:
[1] A. Ghoshal, M. J. Sundaresan, M. J. Schulz, and P. F. Pai, “Structural health monitoring techniques for wind turbine blades”, J. Wind Eng. Ind. Aerodyn., vol. 85, no. 3, pp. 309–324, 2000.
[2] Renewables 2017 Global Status Report, REN21. Paris, 2017.
[3] F. B. Sørensen, E. Jørgensen, P. C. Debel, M. F. Jensen, M. H. Jensen, K. T. Jacobsen, and M. K. Halling, “Improved design of large wind turbine blade of fibre composites based on studies of scale effects (Phase 1)", Summary Report (Risø-R-1390(EN)), Denmark, 2004.
[4] M. J. Sundaresan, M. J. Schulz, and A. Ghoshal, “Structural health monitoring static test of a wind turbine blade", Subcontract Report NREL/SR-500-28719, Colorado, USA, 2002.
[5] F. B. Sørensen, L. Lading, P. Sendrup, M. McGugan, P. C. Debel, J. D. O. Kristensen, G. Larsen, A. M. Hansen, J. Rheinlander, J. Rusborg, and D. J. Vestergaard, “Fundamentals for remote structural health monitoring of wind turbine blades", a pre-project Risø-R-1336(EN), Riso-R-1336(EN) Report, Denmark, 2002.
[6] A. Staino, and B. Basu, "Dynamics and control of vibrations in wind turbines with variable rotor speed", Engineering Structures, pp. 58-67, 2013.
[7] T. Irvine, "An introduction to shock & vibration response spectra", 2002, Available: https://info.mide.com/hubfs/eBooks/ebook-tom-irvine-shock-vibration-response-spectra.pdf 2002 09/03/2019.
[8] O. T. Bulut, "Non-linear vibrations of a rotating beam", Journal of sound and vibration, pp. 314-335, 2009.
[9] J.-H. Park, "Linear vibration analysis of a rotating wind turbine blade", Current applied physics, pp. 332-334, 2009.
[10] O. O. Ajayi, "The Potential for Wind Energy in Nigeria", Wind Engineering, pp. 303-312, 2010.
[11] P. Guo, and D. Infield, "Wind turbine tower vibration modelling and monitoring by the non-linear state estimation technique", Energies, pp. 5280-5293, 2012.
[12] C. Strangfeld, H. Müller-Vahl, C. N. Nayeri, C. O. Paschereit, and D. Greenblatt, "Airfoil in a high amplitude oscillating stream", J. Fluid Mech., vol. 793, pp. 79-108, 2016.
[13] C. V. Woude, S. Narasimhan, "A study on vibration isolation for wind turbine structures", Engineering Structures, vol. 60, pp. 223–234, 2014.
[14] I. B. Mabrouk, A. ElHami, L. Walha, B. Zghal, M. Haddar, "Dynamic vibrations in wind energy systems: Application to vertical axis wind turbine", Mechanical systems and Signal Processing, vol. 85, pp. 396–414, 2017.