Robust Control of Grid-Forming Converters for Future Power Systems

This document, presented by Xiongfei Wang, Xinghua Chair Professor at Tsinghua University, discusses robust control strategies for grid-forming converters in future power systems. It outlines functional specifications from ENTSO-E and NERC, emphasizing the concept of an internal voltage source behind an effective impedance. The presentation covers small-signal stability with resonances and damping control, large-disturbance withstand including transient stability and current limiting control, and concludes with prospects and challenges. The eGRID Research Group, with collaborations from industry partners like Huawei, Hitachi Energy, and TenneT, highlights 40+ industrial projects and applications in scenarios such as the Hornsea, Red Sea, Qinghai, and Inner Mongolia. The document underscores the importance of grid-forming technology in maintaining system voltage, contributing to fault level and inertia, and supporting system survival, while addressing control interactions and stability in ultra-weak grids.