Research On Permanent Magnet Synchronous Wind Power Control System

Since the world energy crisis and environmental pollution increasing,people began to look for to clean environmental protection Raw energy to replace conventional fossil fuels.At present,in many new types of renewable energy development and utilization of wind power is a phase To mature technology,suitable for large-scale commercial development and utilization,so as a kind of green energy,wind power is renewable Energy got rapid development.As the wind capacity accounted for the proportion of the whole power system increases gradually,The operation of the wind generator performance Good or bad and the power quality of power grid is becoming more and more extensive concern to the world,in this paper,Based on wind power generation system of permanent magnet synchronous wind turbine wind stochastic mathematical model of the switched systems and the mathematical model of the grid side converter the research,Sliding mode variable structure controller is discussed on the wind speed of motor speed of random switching system,active and reactive current and high precision Degree of control,current transformer switch part of the converter process of current set of nonlinear random noise disturbance and nonlinear impulsive interference Synchronous control.This paper is arranged as follows:In section 1,Introduces the research background of wind power.Secondly,wind power development of related research is given And its operation principle.Finally,we give the major work about the paper.In section 2,In order to realize high level of precision control of motor speed and active(or reactive)current by with wind speed stochastically switching,we propose a wind speed random switching smooth control strategy of permanent magnet synchronous wind power generator with variable structure control of integral action sliding mode.A wind power generation system model is built in the simulation environment of Matlab/Simulink.by which we can see that the proposed method can effectively reduce the wind speed of random switching of direct-drive permanent magnet synchronous wind and load disturbances generator power output current disturbances.In section 3,In this section,we studied the synchronization control of wind power with disturbance of nonlinearity and white noise.By using the Kirchhoff's law,we obtained the mathematical model of wind power grid side converter system.Meanwhile,a appropriate feedback synchronization controller was designed.By establishing a suitable Lyapunov function,we validated the effectiveness of synchronous controller.Therefore,we can eliminate the disturbance of nonlinearity noise produced by the wind current embedding into the grid.As a result,we can make the current generated by the wind generator synchronize the current in the grid.Finally through Simulink in Matlab simulation,we validated our theoretical results.In section 4,On the basis of the three quarter,we studied the synchronization control problems of high-power wind power grid with nonlinear pulse disturbance.A appropriate feedback synchronization controller was designed.By establishing a suitable Lyapunov function,we validated the effectiveness of synchronous controller.we proposed an optimal algorithm,Finally through Simulink in Matlab simulation,we validated our theoretical results.