Virtual synchronous generator system state feedback controller design method considering time lag

The invention relates to an electric power system virtual synchronous generator control technology, in particular to a virtual synchronous generator system state feedback controller design method considering time delay, which comprises the following steps: 1, establishing a VSG control inverter grid-connected system state space model; 2, considering time lag, and rewriting a state space model; step 3, according to a Lyapunov stability theorem, deducing a time lag stability condition through LMI; 4, adding a state feedback controller; 5, obtaining a new time lag stability condition of the system under the action of a state feedback controller; step 6, solving a state feedback controller equation according to a stable condition. According to the method, by designing the state feedback controller, the influence of time delay on VSG control is effectively solved, so that the VSG system can meet the ideal performance requirement, and the time delay stability of the virtual synchronous generator grid-connected syst