Grid–Following DVI–Based Converter Operating in Weak Grids for Enhancing Frequency Stability

Inertia requirement is the paramount challenge in future power systems with a significant share of renewable energy generators. A promising solution to this issue applying Distributed Virtual (DVI) concept, i.e. releasing preserved DC–link capacitors employed converters grid following frequency disturbance. Nonetheless, small–signal stability analyses affirm that local mode associated control system prone become unstable when grid–interactive converter augmented DVI operates weak grids. To overcome problem, an efficient compensator proposed paper. This introduces one degree–of–freedom direct–axis current controller synchronous reference frame, which eliminates adverse impact function on stability. Finally, efficacy framework depicted by simulations MATLAB. The results illustrate rate change step–up load improved 30% compared case loop nullified.