“The purpose is to conduct theoretical and simulation analysis on the load characteristics of direct drive permanent magnet synchronous generators under virtual synchronous generator control, in response to the complex electromechanical coupling characteristics of frequency supported control wind turbines in the context of energy transformation and large-scale wind power grid connection. The research progress in the field of wind power grid connection is introduced. The team established a VSG-PMSG electromechanical coupling model system, explored the load response mechanism, and provided theoretical basis for the control strategy and mechanical structure design of frequency supported wind turbines.”