1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan, Hebei 063210, China; 2. College of Energy and Power Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, China; 3. Tibet Autonomous Region Energy Research Demonstration Center, Lhasa, Tibet 850000, China; 4. College of Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
Abstract：In order to meet the demand of safety and reliability of the Vertical Axis Wind Turbine(VAWT)with wind gathering device in the high-cold and high-altitude regions of Tibet, based on the constraint conditions of component strength and meteorological parameters, a kind of 500 W power ra-tings SB-VAWT with wind gathering device in Tibet was used for structural analysis. The finite element method was used to calculate and analyze the static mechanical properties and modal analysis of main parts of VAWT. The static structural analysis by ANSYS showed that the maximum displacement and deformation variation under the rated speed condition of the main structural components such as blade, beam, main axis, flange plate, upper and lower wind gathering device and tower were 0.19, 0.25, 0.013, 0.005 6, 0.63, 1.20, 0.05 mm respectively. The maximum equivalent stress were 11.96, 25.63, 11.7, 6.1, 4.68, 2.11, 2.28 MPa respectively. All of them are within the range of strength that the material can bear, and the influence can be ignored. Furthermore, the vibration frequency 2.5 Hz of the wind rotor was much less than its first natural frequency 9.22 Hz, no resonance occurred, and it was safe and reliable. The research results can provide a theoretical basis for the application of the Straight-Bladed Vertical Axis Wind Turbine with Wind Gathering Device in the high-cold and high-altitude area.
