GCC Power Production Management Enabling PCC Voltages Control

The grid-connected converter control has different objectives that must be achieved, sometimes simultaneously. In recent years, particularly important became those associated with irregular working regimes. In this paper, active and reactive power production strategies with an objective of balanced PCC voltages recovery during unbalanced grid voltage sags are proposed, taking into account current limits. The PCC voltages regulation scheme is seamlessly integrated with regular GCC power production functions. The number of required input parameters for scheme to function is reduced, as only a limited knowledge of the system to which the GCC is connected is necessary. Selected HIL results verify the effectiveness of the proposed algorithm.