Research And Design Of Photovoltaic Inverter Based On TMS320F28027

With the development of world economy and the exhaustion of the fossil energy，shortage of and contamination of environment become the factor of economicdevelopment.All the countries in the world throw into manual labour and financial resoures toexplore the reproducible new resource for the sustainable development.Amone various newresource，such as wind energy source、solar energy、geothermal energy,oceanic energy,nuclearfusion energy,biomass energy and hydroenergy，solar energy becomes the researching areaowing its inexhaustible,extensive, clean and safety. How to change low voltage direct currentinto electric supply and cut down the cost of photovoltaic inverter is the vital factor within thedevelopment process of solar energy.Therefore,there is an impormant theorical and practicalmeaning with throwing larger research on solar energy.This paper researches on two-stage photovoltaic converter,which adopt high functiondigital signal processing TMS320F28027as the control chip.Through analysising theprinciple of new topology,building the mathematic model,applying the suitable controlmethod,researching on simulink of circuit，compling C language on electrical power andelectronics test the practice of photovoltaic inverter.Firstly,we introduce the principle of photovoltaic generating system.Then there is aclassify of photovoltaic product in market.Basing on the above-mentioned,choose the suitabletopology and control method.Building the mathematic model on the output characteristics and perturbationobversation MPPT method simulink the circuit with Matlab and test the practice andrationality.The paper explain the choose method of system hardware in detail.there is an emphasison the principle of main circuit,sample circuit,control and drive circuit.In the end,code thesoftware of system and capture the waveform of key position. Experimental result illustratethat prototype can work normally and output sine waveform.