Research on virtual Synchronous Generator Control Strategy based on Self-coupling PID

The voltage and frequency deviation in steady state operation of distribution network will lead to low efficiency of inverter based on virtual synchronous generator(VSG). PID parameter configuration and self-tuning are the key factors to determine the performance of VSG control system. Based on the analysis of the traditional VSG control strategy, this paper proposes a VSG control strategy based on auto-coupling PID. By calculating the mathematical model of the VSG, The parameters of the controller are adjusted in real time by using the auto-decoupled PID algorithm. The voltage and frequency inertia effects of the VSG were verified by MATLAB/Simulink modeling and simulation. Simulation results show that the VSG based on self-coupling PID has better performance of regulating voltage and frequency, and can meet the requirements of normal operation of distribution network.