一种用于增强双馈感应发电机故障穿越能力的简易多功能直流斩波器

Generally, crowbar circuits and dc choppers are employed to prevent rotor-side converter overcurrent and dc-link overvoltage, respectively, during the fault ride-through (FRT) process in doubly fed induction generators (DFIGs). However, once the crowbar is activated, the DFIG cannot fulfill the grid code requirements. This letter introduces a multifunctional dc chopper that can operate in current-...