Neural Network-Based Optimized Control for Enhancing Voltage Support of Grid-Forming MMCs Under Voltage Sags
With the integration of renewable energy and power-electronic devices, grid-forming modular multilevel converters (GFM-MMCs) play a critical role in active grid support. An AC grid voltage sag can trigger a large support current, which may cause large voltage fluctuations in submodule capacitors and arm overmodulation,...