光伏并网发电系统及其控制研究

ABSTRACTGrid-Connected photovoltaic technology is a good way to make full use of solarenergy,which is green and clear energy.the grid-connected photovoltaic system hasbeen a hot spot.Based on the introduce of the current condition of grid-connectedphotovoltaic system,the basic foundmental of Grid-Connected photovoltaic system isanalyzed.After analyze different control strategy,current follow up amethod is used.Mathematic model is established.Furthermore,Grid-Connected photovoltaic circuit isdesigned,including maincircuit,signal sample and process circuit PWM and SPWMwave generation circuit and order driver and source circuit.These circuit operationfoundamental is analyzed in detail.Circuit manufaction and debug isfinished.maximumpower follow technique is studed,and conduction incrementmethod is adopted.KEY WORDS:solar energy,Grid-Connected,PWM,MPPT