Research on Synergistical Adaptive Control of Inertia and Damping of Virtual Synchronous Generator
Virtual synchronous generator(VSG)controlled grid-connected inverters may experience power and frequency overshoot and oscillations during sudden changes in grid conditions.Considering that it is difficult to measure the angular frequency change rate in practical engineering applications,in order to improve the dynamic performance of grid-connected inverters,the corresponding relationship between the input and output power difference of grid-connected inverters and the angular frequency change rate is obtained by analyzing the power angle characteristic curve and output frequency oscillation curve of VSG.An improved inertia and damping cooperative adaptive control strategy is proposed.The simulation results verify the feasibility and superiority of the proposed control strategy.
virtual synchronous generatorgrid-connected inverterinertiadampingadaptive control