Adjusting Synchronverter Dynamic Response Speed via Damping Correction Loop

By Shuan Dong, Y. Chen. IEEE transactions on energy conversion, 2017

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Active Power Oscillation and Suppression Techniques Between Two Parallel Synchronverters During Load Fluctuations (2020, background): “In [20]–[22], the dynamic characteristics of a single synchronverter were analyzed.”
Research Roadmap on Grid-Forming Inverters (2020, background): “Recent improvements include virtual elements to prevent instabilities (Natarajan and Weiss 2017), additional loops for faster response (Dong and Chen 2017), and designs that give bounds for frequency and terminal voltages (Zhong et al. 2017).”
Grid-Synchronization Stability of Converter-Based Resources—An Overview (2020, background): “For example, an additional damping correction loop is reported in [34], which provides one more degree of freedom to adjust the damping ratio of VSG without affecting its steady-state frequency droop characteristic.”
Grid Forming Inverter Modeling, Control, and Applications (2021, background): “In [53], the authors have proposed designing an additional damping loop to improve the damping without affecting the intrinsic P-ω droop.”