New energy photovoltaic power generation system, referred to as photovoltaic system, is a system that uses solar photovoltaic cells to convert sunlight into electricity. It uses photovoltaic panels made of semiconductor materials to convert solar light energy into electricity through the photovoltaic effect, and then converts direct current into alternating current through the inverter, and finally supplies households, factories, enterprises, schools, hospitals and other electrical equipment.

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Photovoltaic energy storage power generation system, according to different types, generally consists of photovoltaic square array, solar controller and inverter (grid-connected inverter and energy storage inverter), battery bank and battery management device BMS, monitoring and energy management system EMS and load, etc.