Advanced Distributed Cooperative Secondary Control of Islanded DC Microgrids

In an islanded DC microgrid with multiple distributed generators (DGs), the droop control is employed to realize proportional current sharing among DGs in microgrid. The action of causes a deviation bus voltage which exacerbated by line impedance between DG and bus. this paper, advanced secondary scheme proposed simultaneously achieve accurate regulation cooperative system. controller introduced cyber layer system, each shares information neighbouring controllers via communication network. technique maintains reliability overall system if some part link fails. uses type-II fuzzy logic adaptively select parameters for improved response controller. sufficient conditions guarantee stability are derived using Lyapunov method. Comprehensive tests under different operating scenarios conducted demonstrate robustness scheme.