The Research On Control Method Of Wind Energy Conversion System Based On SVPWM

This topic is derived from wind-light complementary power generating system that is one of the projects of Heilongjiang Natural Science Foundation.The issue that people widespreadly concern in current day is the energy issues,in addition,the development of safe and non-polluting energy is also a hot topic.Wind energy resources is the most invaluable grant of the nature,not only our country has a rich reserves of wind power,but also it is a kind of recyclable and innocuous energy.However,due to the randomness and instability of wind,the utilization efficiency of wind is still keeping in a low level.Thus,efficiency issue of wind is now the priority in the wind power generating process.At present,technologies are used to raise the utilization efficiency of wind,and this method is the best way to accelerate its coverage and lower the cost.This paper analyzed the control principle and method of rectifier in the wind power generating system.The mathematical model of wind driven generator and rectifier is built according to the data that given by the task.This paper aims at the PWM rectifier model that is applied to the presnet wind power generating system,and Voltage Spatial Vector Pulse Width Modulation Technology is adopted to solve the problem of low output power of wind power generation system.The concrete implementation is to use DC double closed loop control system to implement the effecive control of the wind turbine output current,thus the utilization efficiency of wind power of the whole system could be promoted.In addition,on the basis of the construction of rectifier mathematical model,we use MATLAB simulation environment for its simulation,according to the actual environment to obtain measured data,and input the data that measured from the practise into the simulation system to analyze.We found that the figure of the system power promoted the efficiency of system via the emulation results.In this paper,the master chip of rectifier control is TMS320F28335,meanwhile we designed the rectifier circuit and the related schematic diagrams ofother modules in wind power generating system.Such as power module,load module,battery module,etc.