Micro solar panels, equipped with innovative technology, store electricity through 1. integrated battery systems that hold this energy for later use, and 3. small-scale photovoltaic systems, 2. energy efficiency considerations. Small-scale photovoltaic systems convert sunlight into direct. Under the background of national energy saving and emission reduction and vigorously promoting the development of new energy sources, photovoltaic–energy storage combined microgrid has become a research hotspot because it can use the characteristics of energy storage to overcome the impact of. In islanded microgrid systems, PV power generation efficiency and energy loss of storage battery are the current research trends. Due to the intermittent and fluctuating charac-teristics of PV power generation, various loads connected to the DC microgrid system would also bring DC bus voltage.