In order to improve the accuracy of PV virtual synchronous generator modeling, the modeling method of photovoltaic virtual synchronous generator integrating the maximum power point tracking, energy storage and grid-connected inverter is presented. Firstly, considering the output characteristics of photovoltaic array and battery energy storage, modeling is divided into DC part and AC part to obtain their respective output power mathematical models. Secondly, combining the maximum power tracking of PV output and the dual-loop control of energy storage, a hierarchical and coordinated virtual synchronous generator strategy is proposed, and four operating modes of photovoltaic virtual synchronous generator are given, then by synthesizing the DC/AC output characteristics, the equivalent output static model of the four modes operation of the photovoltaic virtual synchronous generator is obtained. Finally, the simulation model of the photovoltaic virtual synchronous generator is built through the Matlab/Simulink platform, the simulation results verify the accuracy of the model and the effectiveness of the control strategy. This work is supported by Fundamental Scientific Research Fund for Universities of Liaoning Education Department (No. JFL201715401) and Natural Science Foundation of Liaoning Province (No. 2015020076).