Design of Robust Integral Terminal Sliding Mode Controllers with Exponential Reaching Laws for Solar PV and BESS-Based DC Microgrids with Uncertainties

In this paper, an integral terminal sliding mode controller (ITSMC) based on a modified exponential reaching law (MERL) is developed for providing large-signal DC-bus voltage stability while smoothing power flow in DC microgrids (DCMGs). It worth mentioning that control approach not employed DCMG applications yet to adjust the preserving balance. The proposed made up of solar photovoltaic (PV) unit, battery energy storage system (BESS), and loads. A DC-DC boost converter (DDBC) bidirectional (BDDC) are connect PV BESS, respectively, with DC-bus, which only controls output these units but also regulates voltage. First, detailed dynamical model including external disturbances each component, i.e., BESS. Then, get their corresponding signals. Afterward, overall unit ensured using Lyapunov theory. Moreover, ensure robustness controller, bounded value user-defined constants. Finally, simulation results used evaluate effectiveness variety operational scenarios. Additionally, strategy compared those existing controllers demonstrate its superiority.