DC microgrids have the characteristics of low damping and weak inertia

making them vulnerable to external disturbances and difficult to maintain stable of DC bus voltage. To address this limitation

a hybrid energy storage coordination control strategy with inertial support for DC microgrids has been proposed. This strategy is based on the complementary advantages of hybrid energy storage and introduces virtual inertia control on the battery converter side. By establishing a functional expression between its control coefficient and DC voltage

it can provide a certain amount of inertial support to the system based on the size of voltage fluctuations

thereby improving the weak inertia of DC microgrids. Finally

a experimental platform based on RT-Lab is built to verify the effectiveness of the above control method. The results show that the strategy can achieve smooth switching between operating states of each micro-source unit and rapid stabilization of the DC bus voltage.