Shear Stress Analysis of Airfoil Surface Vibration Under Deicing Conditions
摘要
When wind turbines operate in cold and humid areas, ice accumulation will occur on the surface of the blades, reducing their aerodynamic performance. In order to reduce or remove ice accumulation and improve the efficiency of wind turbine power generation, this paper conducts research on wind turbine blade vibration deicing. Designed airfoil blades with a hollow structure at the leading edge, established airfoil blades with a hollow skin structure at the leading edge, and proposed calculation methods for electromagnetic force and shear stress. Based on theoretical calculation results, the influence of current pulse amplitude, rise time, and half wave time on magnetic field force was analyzed. An analysis was conducted on the deicing effect under different temperatures and starting times of the deicing system. The calculation results showed that at lower temperatures, even if the thickness of the ice layer is the same, a larger pulse current is needed to overcome the adhesion force of the ice layer fish blades.