ANALYSIS OF THE INDUCTION EFFECT ON THE PERFORMANCE OF WIND TURBINE

M. DEBBACHE, S. DERFOUF

Abstract


In real, the vortices created behind the wind turbine and around the blades due to the induction flow created by the difference in pressure in rotation plan and the rotational the blade moves, which summarized in Glauert’s model as the axial and tangential induction factors. In this work, a Matlab code has been established to analyze the induction effect on the performance of wind turbine. This code based on the enhanced blade element momentum theory with considering the recent correction. The results demonstrate that the axial induction effect is the master responsible for increasing the mechanical stress effect that decreases the wind turbine performance at the low wind speed value. In another side the increasing of wind speed accompanied by the increasing of tangential induction effect at tip and root of blades with creating vortices, which put the rotor in the critical case with less efficiency.


Keywords


wind turbine, blade, induction, BEM theory, Thrust force, airfoil.

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