Dynamic Response Analysis of a New Type of Variable Pitch Wind Turbine Blade Structure Under Different Inflow Conditions
For the 1.5 kW distributed new type of variable pitch wind turbine,the structural dynamic re-sponses under uniform inflow and shear inflow were calculated with the numerical simulation method,and the influences of pitch angle,wind speed and shear index on the structural dynamic response characteristics of the new type of variable pitch wind turbine blade were analyzed.Results show that the stress response and displacement response of wind turbine blades decrease significantly with the increase of pitch angle,and the larger the incoming wind speed or shear index is,the greater the decrease is.Under the condition of shear flow,the stress response and displacement response of wind turbine blades increase with the in-crease of shear index.The variable pitch adjustment method is feasible for the blade load reduction under complex wind conditions,witch can provide a reference for the structure and performance optimization of distributed wind turbines under complex wind conditions.
万方数据
维普
