Fuzzy control of energy storage systems in DC microgrids

DC microgrids can have many destabilizing and ill-behaving elements. In this paper a fuzzy-logic control algorithm is implemented to stabilize a DC microgrid while demonstrating improved management of an energy storage system when compared against a tradition proportional-integral control algorithm. Simulation and hardware results of a DC microgrid comprised of a variable power source, stochastic impedance load, a fixed ballast and a stabilizer unit (lead acid battery and ultra-capacitor bank) will be demonstrated