Abstract: The development of renewable energy power generation is an important way to achieve the goal of "double- carbon", and the high proportion of power electronic grid-connected equipment has become the main form of renewable-resource-based power system. However, the synchronization mechanism of power electronic system is dominated by equipment synchronization control, which is affected by the characteristics of sources, equipment capability and interconnection network. Therefore, from the perspective of source-converter-network cooperation, it is necessary to consider the regulation ability of power electronic grid-connected equipment on resources and the interaction between different grid-connected equipment, and sort out the internal mechanism of synchronous operation of grid-connected equipment. Firstly, the influences of output characteristics of renewable energy generation on synchronous control and targeted improvement control methods are summarized. Secondly, the synchronous control methods considering the physical resource constraints of grid-connected equipment are reviewed. Thirdly, the synchronous control of grid-connected equipment under weak grid interaction and multi-converter coordination methods are reviewed. Therefore, the three aspects of "source-converter-network" coordination perspective for synchronous control of power electronic grid-connected equipment are introduced, and new methods of constructing synchronous control are proposed.