Event-Triggered Distributed Sliding Mode Control for DC Microgrids With Imperfect Sources

Abstract

In this article, an event-triggered distributed sliding mode control (SMC) scheme is developed for dc microgrids composed of multiple boost converters in parallel under limited resource bandwidth. By removing the assumption of ideal voltage sources, the multiple boost converters are modeled as imperfect voltage sources that can be well addressed by SMC. A finite-time control method is suggested to design a distributed control framework for realizing voltage regulation and power sharing with high convergence rate and low steady-state error. Furthermore, an event-triggered strategy is proposed to avoid large bandwidth overhead when carrying out tasks with heavy resource burden. Finally, the effectiveness of bandwidth saving and disturbance rejecting is verified by several comparative simulation results and experimental tests over existing literature.