Dynamic Analysis And Simulation Of The Drive Train Of Large Wind Turbine With Horizontal Axis

Based on the inner linkage of theory and principle of wind turbine drive system, the paper introduces the differential equations of dynamic process of wind turbine drive system, analyzes the dynamic characteristics of wind turbine drive system and realizes visual simulation study of wind turbine drive system using virtual prototype technology, which has importantly instructive meaning for the design, running, control and protection of large wind turbine.The paper firstly introduces the classification, structure composition and aerodynamic characteristics and wind power generation technology, designs the overall parameters and major gear box parameters of the transmission system of wind turbine and founds further basis for the dynamic characteristics analysis of transmission system and the visual simulation study of virtual prototype.On the basis of dynamic characteristics study of wind turbine, the paper analyzes wind speed model and dynamic generator model, builds up the rigid shaft model and flexible shaft model of the drive train of horizontal axis wind turbine, makes dynamics simulation for the model using control theory and methods, studies the dynamics characteristics of drive system in the random-wind aerodynamic torque circumstance and verifies model correction through the analysis and comparison of the simulation result.Under the environment of PRO/E, it studies the methods and steps of helical gear parameter modeling and builds up three-dimensional entity structure of the drive system. It succeeds in importing three-dimensional entity model into ADAMS software using MECH/PRO interface software, and makes simulation study of virtual prototype of the drive system, realizes the gear-meshing force output under dynamic loading and provides a new way for gear loading obtainment and fatigue life prediction.Lastly, it makes joint simulation analysis for the stall-regulated characteristics of 300KW horizontal axis fixed-pitch wind turbine through MATLAB and ADAMS software, and the result verifies the feasibility of the method and provides an effective & modernized way for the design of wind turbine control system.