Resilient and Robust Voltage Regulation in Shipboard DC Microgrids With ZIP Loads Under Actuator and Parameter Uncertainties

The increasing adoption of all-electric ships and seaport microgrids has highlighted the critical need for robust and resilient control in shipboard DC microgrids. These islanded systems, operating as independent power networks with limited capacity, face significant challenges in maintaining stable voltage levels, particularly under uncertainties, which can compromise system performance and reliability. To address these challenges, this paper proposes a novel resilient and robust voltage regulation control for shipboard DC microgrids with constant impedance (Z), constant current (I), and constant power (P) loads. The control framework models actuator uncertainties as unanticipated disturbances, requiring resilient response, while handling deterministic parameter uncertainties through robust design. The proposed approach integrates an adaptive control technique with mechanisms to estimate and compensate for actuator uncertainties, ensuring resilient voltage regulation even under adverse conditions. Decentralized conditions for the voltage stability of closed-loop microgrids are derived. The proposed strategy enhances the resilience of shipboard DC microgrids and provides a framework for their reliable operation under uncertainties. Hardware-in-the-Loop (HIL) and simulation results in MATLAB/Simscape Electrical demonstrate the effectiveness of the proposed approach in achieving stable and resilient voltage control, offering a robust framework for reliable maritime power systems.