Distributed control of DC microgrid considering dynamic responses of multiple generation units

In order to combine energy sources with different dynamic responses, this paper proposes one universal distributed control method to implement power sharing in frequency spectrum. The energy elements with fast dynamic responses such as battery can be used to absorb high frequency power components, while the ones with slow dynamic responses such as Fuel Cells supply smooth energy. The method is based on the droop control technology adding carefully designed forward path filter, and the disturbance response can be adjust according to the requirement. Simulations and experiments are conducted to verify the proposed method to loads stepping.