The Study And Exploitation Of Wind Power Generation System Simulation Model

The wind power system is a c perplexed indefinite system. It workes in varied environment, in which the wind is changeable and variable. So the model and analysis of the wind power system is important. The directly driven wind turbine with permanent magnet synchronous generators (D-PMSG) is one of the main kinds of wind power generation,due to its high efficiency,simple structure,easy manufacture,excellent control and stable operation.D-PMSG becomes into mainstream-for their special field of advantagesThis thesis studies the modeling and control method of the D-PMSG-wind turbine,generator,converter. The main content of this paper can be summed up as follows:Firstly, analyzes the wind generator direct driving the working principle, establish its space vector model, analyzes its in different operation state vector phase relationship. Analyzed the direct driving type permanent magnet synchronous wind power unit operation area and control target, this paper expounds the maximum wind power tracking control and variable oar the principle and method of distance control.Secondly, establish the fans, drive and direct drive permanent magnet synchronous generator wind turbine(D-PMSG), including the whole model. Of direct-drive permanent magnet synchronous wind turbine from the starting machine, running under various wind speed, security, parking and other working conditions were simulated; show a direct drive permanent magnet wind turbine in low wind speed Maximum Wind Energy Tracking Rated wind speed constant power control on a normal working condition.Thirdly, Establishes mathematical model of the PWM rectifier in three-phase stationary coordinate system and two-phase rotating coordinate system,and the control system of the rectifier is designed.The simulation result verifies that this design method is feasible and the simulation model is correct.