On the Synchronization Stability of Converters connected to Weak Resistive Grids

The paper proposes a simplified yet accurate converter model for the analysis of the synchronization stability considering the effect of weak resistive grids. A thorough comparison with simulations obtained with detailed EMT models shows that the proposed model captures precisely the synchronization transients. Simulation results also indicate that the impact on synchronization stability of the resistances of the grid on the synchronization stability depends on the state of the converter operation.