Bi-directional DC-DC converter For ESS using the Droop Control

In this paper, we try to provide a bi-directional switching converter for ESS (Energy Storage System) using the droop control. Using the Droop control, and the operation at the set power capacity, in order to cope with when the voltage of the ESS is varied by charging and discharging, to work with buck and boost mode. An advantage when using the Droop Control, depending on the amount of required power, it is possible to adjust the output of the converter, also the rate of change in voltage during cooperation inverter or DC grid can be suppressed to a constant level is there. This, when working with inverters or DC grid, can provide the power loss caused by the voltage fluctuation. These things, to prove through the simulation.