Aerodynamic models are generally empirical models of aerodynamic forces. For wind power generation blades, the wind field around them is strongly affected by the wake of the upstream blades, so the aerodynamic forces they receive are generally unstable and nonlinear. Since the current development of computational fluid dynamics (CFD) is far from being able to directly solve the unstable aerodynamic force on the blade based on the N-S equation in real engineering, empirical aerodynamic models that guarantee a certain accuracy are very popular. Currently commonly used empirical aerodynamic models generally identify corresponding parameters based on wind tunnel test results. Commonly used aerodynamic models include the Beddoes-Leishman model, ONERA model, etc.
Analyze the wind turbine first. Models of eachcomponent (mainly including wind power characteristic model, wind turbine aerodynamic analysis model, transmission system analysis model and generator analysis model), and then establish a simulation model of each component in Simulink to synthesize a nonlinear simulation model of the entire transmission chain. .