The Research Of Power Control Strategy Of Direct Driven Permanent Magnet Synchronous Wind Power Generation System

The controlling theory and technique of direct driven permanent magnet synchronous wind power generation system based fixed pitch is matured with the great development of manufacturing technology and electric control theory particularly the maximum power point tracking mppt;maximum power point tracking technique,the power smoothing technique and converter control technique of direct drive permanent magnet synchronous wind power generation system in the wind field that the wind velocity is variable and irregular even with high variance ratio get great advances.And the research of theory and technology of mechanical manufacturing and theory and technology of electrical control of direct driven permanent magnet synchronous wind power generator what has large capacity get big break.Using the calculation of power optimization and the controlling strategy converter of direct driven permanent magnet synchronous wind power generation system be emphases of this thesis.The main contents of the thesis are that use modified EMA calculation be the solution of the power reference of direct driven permanent magnet synchronous wind generator.Using Frictional PI controller to be main controller of converter controlling system of direct driven permanent magnet synchronous wind power generation system.Building the models of direct driven permanent magnet synchronous wind power generation system based the modified EMA power optimization and the direct driven permanent magnet synchronous wind power generation system with using frictional PI controller to be main controller of the converter controlling system with using MATLAB/SILUNK.Then make some analyses about the waves of those models.At last,using experiment machine of wind power system to collect waves what are voltage and current of rectifier input port of direct driven permanent magnet synchronous wind power generation system;the directed voltage of rectifier out port;the voltage of current in converter out port of direct driven permanent magnet synchronous wind power generation system.And make the steady proves of the power controlling theory and the converter controlling theory about direct driven permanent magnet synchronous wind power generation system and make conclusions.