Design of an Integral Sliding Mode Controller-Based on a Hybrid Reaching Law for DC Microgrids

This study presents a hybrid reaching-law-integral sliding mode controller (HRL-ISMC) for increasing transient stability while preserving the DC microgrid’s power sharing. A DC-bus voltage that is constant is well known as the primary sign of adequate power balancing in DC microgrids. As a result, another important goal of this research is to maintain a consistent DC-bus voltage. Controlling the output power of each microgrid unit is required to meet the aforementioned goals, and this will be accomplished using the proposed HRL-ISMC. The suggested DC microgrid in this research includes a solar photovoltaic (PV) system, a battery, and DC loads. After that, the control Lyapunov theory is applied to assure the overall stability of each unit inside the DC microgrid. Finally, simulation results are shown to showcase the proposed controller’s performance, as well as a comparison result to show the suggested controller’s merit.