Abstract
This paper proposes a novel latency-robust adaptive control method for regulating active power flow at the point of common coupling (PCC) in centralized grid-connected microgrids (MGs). The proposed strategy dynamically adjusts central controller (CC) parameters, like the digital anti-aliasing filter cutoff frequency and packet transmission rate (PTR), to maintain stability and provide the fastest response to reference variations. The method is tested in a controller hardware-in-the-loop (CHIL), with the Typhoon HIL 402 simulating the power system, the Raspberry Pi implementing the CC, and communication via Ethernet. The strategy is compared with the typical implementation using fixed CC parameters. The results show that the adaptive control achieves shorter settling times than the fixed control, while also remaining stable in scenarios where the fixed control becomes unstable. The adaptive control is also validated under packet loss and communication failures, maintaining stable and accurate active power flow at the PCC.