具有直流分量抑制/估计能力的电网同步系统线性时变建模、检验与性能提升

The dc component, which may be caused by different factors in the grid voltage, is one of the disturbances that may severely affect the performance of grid synchronization systems and, therefore, grid-tied power converters. In the phase-locked loop (PLL) and frequency-locked loop (FLL)-based grid synchronization systems, which this article focuses on, some solutions to deal with this challenge hav...