| Photovoltaic generation was rapidly developed in USA, Japan and Europe country. The experiment platform of lOkW PV grid-connected generation is designed in this project. This project mainly introduces principle and modeling of each part of PV grid-connected generation system and experimental analysis. The main contents of the paper are as follows:(1) All components of the PV grid-connected system are introduced and analysed, including the classification and principles of PV grid-connected inverter, the functions and charging method of PV controller, the structural characteristics of lithium cell, and battery manage system.(2) Mathematical modeling analysis are done in detail to the system and all parts of it, including modeling and simulation of the system, PV cell, and grid-connected inverter, and mathematical modeling of the energy storage system, then compare the results of simulation and experiment, confirming the feasibility of the system.(3) The scheme of system integration is designed. What's more, the design and installation of PV array, the condition of grid connection, the connection of energy storage, and the design of monitor system are all introduced in detail.(4) Complete the building of 10KW PV grid-connected generation system integrated energy storage, and the experiments of PV grid-connection, charging of lithium cell, grid-connection of energy storage system, and PV grid-connection integrated energy storage system. Then analyse the result of the experiments, confirming the feasibility of the system.(5) At last we make summary of our work and presumption of further research.
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