Design And Implementation Of Micro-inverter For Photovoltaic

With the development of world economy,deteriorating living environment,the human demand for energy made more demands,the increasing depletion of traditional energy sources,forcing us to find new energy sources to replace traditional energy sources.In recent years,countries around the world have introduced policies on solar energy industry has played a role in fueling,making the rapid development of solar energy industry in the short period of time.In the solar industry,photovoltaic power generation is more far-reaching significance.PV inverter for grid-connected PV critical equipment is essential,and this photovoltaic renewable energy development kit with the development of photovoltaic inverters for the future design of the foundation.This paper has developed a chip based on TMS320F2812 renewable energy development kits.This package put forward DC/DC step-up,DC/AC inverter and DC/DC step-down,charging structure,the DC/DC and DC/AC relative independence,so I made the modules were described in detail Analysis.DC/DC module includes two parts,boost and buck chopper using the traditional circuit.DC/AC part use of the single-phase H bridge inverter,and designed to achieve the inverter module for the IPM function.Software part consists of three modules:the main program,the main interrupt,the background loop.The main program contains each peripherals and parameter initialization.The main interrupt contains Sampling,control,parameter calculation.Background loop is also divided into three small cycles:serial communication,control parameter adjustment,enable control of each module.Finally,on the photovoltaic renewable energy development kit with a series of experiments,experimental results show that photovoltaic renewable energy development package can achieve the desired function.On this basis,made a reasonable summary and outlook on the micro-inverter.