交流电网故障下双构网型模块化多电平变换器

The dual-grid-forming (DGFM) control of the modular multilevel converter (MMC) can provide active power support by releasing submodule (SM) energy. At the same time, it maintains the ability to regulate dc voltage, making it promising for large-scale offshore wind power integrated high-voltage direct current systems. However, DGFM MMC are prone to transient stability problems under ac grid faults....