Grid-connected solar photovoltaic power generation system
Principles description

The system mainly consists of photovoltaic phalanx and grid-connected inverter.

In areas with public power grids, photovoltaic power generation systems are generally connected to the grid, namely the grid-connected operation, which requires the inverter to connect to the grid. The advantage of the combined grid solar photovoltaic power generation system is that it can save the battery and take the power grid as its own energy storage unit. Because the battery in the storage and release of energy loss, and the service life of the battery is usually only 5-8 years, the scrapped battery will pollute the environment. Therefore, the photovoltaic power generation system after saving the battery can not only greatly reduce the cost, but also have higher power generation efficiency and better environmental protection performance.

Off-grid-type solar PV power generation system:

It consists of solar cell assembly, solar controller, storage battery (pack). If the output power is AC 220v or 110v,.

The solar cell assembly transforms solar light into electric energy and stores the battery through the controller for load; the charge and discharge part of the whole system, also includes monitoring, temperature compensation and time control; since the system output is DC, if the load is AC equipment, the inverter power shall be provided.

The use of off-grid photovoltaic systems is independent of the grid and can be used to power radio relay stations, telephone booths and street lighting. In the ship and leisure convertible market, the mobile photovoltaic technology market is also constantly developing. Off-grid (also known as independent) photovoltaic systems also provide more economic electricity for developing countries with unstable or imperfect traditional electric power.