Research On Maximum Wind Energy Tracking Control Strategy Of Permanent Magnet Synchronous Generation

The maximum wind power tracking control is a key technology in wind power generation, the maximum wind energy capture efficiency can improve wind power. In this paper, permanent magnet synchronous wind power system with low noise and high reliability is as the research object.The grid better performance of permanent magnet synchronous generator system maximum power tracking control strategy is proposed based on the maximum wind power tracking control strategy on the current situation.The main work and results are as follows:(1) This paper analyzes the basic principle of wind turbine energy conversion, the output characteristics of the wind turbine, the wind turbine and permanent magnet synchronous generator, dual PWM converter, DC bus and transmission structure mathematical model and modeling in MATLAB.(2)The control strategy of double-side PWM converter and grid-side converter is determined. Grid-side converter selection common voltage oriented vector control to achieve its grid; machine side converter were used to field-oriented vector control and maximum wind vector-based pre-torque current feed-forward control track, in MATLAB, the two side machine vector control of simulation research showed that the largest wind based on the front-side of the feed-forward torque current vector control tracking is better.(3) The hill-climbing algorithm and particle swarm optimization algorithm are used in the speed optimization,respectively, and combined with the converter control strategy, the two algorithms simulation are compared in MATLAB. The results show that the maximum wind energy tracking algorithm based on particle swarm optimization algorithm is effective and feasible, and it can improve the response speed compared with the traditional hill-climbing algorithm.(4) A kind of yaw threshold algorithm according to the different wind speed change is proposed.Lad language realization algorithm is built based on semi E-wind-Turbine PLC control simulation semi physical platform. In the experimental platform validation algorithm is feasible and effective, to improve the shortcomings of the yaw frequently, and improve the efficiency of wind energy capture.