Photovoltaic (pv) Grid System Inverter Svpwm Optimized And The Island

Grid-Connected photovoltaic technology is a perfect way to make full use ofsolar energy, which is green and clear energy. The grid-connected photovoltaicsystem has been a hot spot. First of all, a survey in made on the state-of-the-artdevelopments and application of the PV power system, then the types and structureof the PV system was introduced. Inverter is the key interface between the PV arrayand power grid, which influences a lot on the general performance. Secondly, inorder to reduce switching losses, an optimal strategy of SVPWM is discussed in thispaper, this paper analysis the principle of SVPWM and based on simulation ofMatlab/simlink. And then, the occurrence cause and negative effects of the islandingin grid-connected PV system are introduced in the paper, a brief analysis of thetraditional passive and active islanding detection method, in order to reducenone-detection zone (NDZ), a new frequency drift with voltage drift technique wasproposed. The simulation model of system was established in Matlab/simulink.Finally, the TMS320LF2407and simulation of Matlab/simulink was introduced.