Off-grid photovoltaic power generation systems are widely used in places where there are frequent power outages, or where photovoltaics are self-contained and cannot be used to connect surplus electricity to the grid, and the price of self-consumption electricity is much more expensive than that of on-grid electricity, and the price of peak electricity is much more expensive than that of valley electricity.
The system consists of photovoltaic modules, solar energy and off-grid all-in-one machine, battery, load, etc. The photovoltaic array converts solar energy into electrical energy when there is light, and supplies power to the load through the solar control inverter integrated machine, and at the same time charges the battery; when there is no light, the battery supplies power to the solar control inverter integrated machine, and then supplies power to the AC power supply to the load.
Compared with the grid-connected power generation system, the system adds a charge-discharge controller and a battery. When the grid is out of power, the photovoltaic system can continue to work, and the inverter can be switched to an off-grid working mode to supply power to the load.