Transient Stability Analysis of Grid-Connected Converter Driven by Imbalance Power under Non-Severe Remote Voltage Sag

In the transient process of grid-connected converter (GCC), existing research mainly focuses on impact control loops. Little attention is paid to stability issues driven by imbalance between input power and output GCC. This paper shows that will still exist even if ignoring dynamics phase-locked loop (PLL) current loop. this paper, models AC grid GCC are built under assumption PLL ignored. Then, analyzing non-severe remote voltage sag, effects discussed. Moreover, for operate stably after process, there should be a maximum limit (MIPL) GCC, equation applied in determine Furthermore, limitation also Finally, theoretical analysis has been verified means simulations.