Based on a DC microgrid system coupled with photovoltaic power generation

lithium batterysupercapacitor hybrid energy storage

electrolysistank and hydrogen-burning micro gas turbine

a power allocation strategy that integrates the lithium battery state of charge(SOC) and hydrogen storage tank hydrogen state(LOH)is proposed. A PV-electrolysistank-micro gas turbine DC microgrid system model is constructed. The allocation logic of the power judgment module of the coordination control layer is designed

and three operation modes are given when the residual power exists in the DC network. The power allocation strategy is simulated and verified using MATLAB/Simulink software. The simulation results show that the power allocation strategy of DC microgrid system based on hydrogen energy storage can make the lithium battery charge state gradually converge to a reasonable storage interval and can improve the service life of lithium battery.