Off-grid solar power generation systems are widely used in remote mountainous areas, areas without electricity, islands, communication base stations and other applications. The system generally consists of a photovoltaic array composed of solar cell components, a solar charge and discharge controller, a battery pack, an off-grid inverter, a DC load and an AC load, etc. The photovoltaic square array converts solar energy into electrical energy under the condition of light, supplies power to the load through the solar charge and discharge controller, and charges the battery pack at the same time; when there is no light, the battery pack supplies power to the DC load through the solar charge and discharge controller. At the same time, the battery should directly supply power to the independent inverter, which will be converted into AC power through the independent inverter to supply power to the AC load.

Compared with commonly used thermal power generation systems, the advantages of solar photovoltaic power generation are mainly reflected in:

1. No risk of depletion;

2. Safe and reliable, no noise, no pollution discharge, clean (no pollution);

3. It is not limited by the geographical distribution of resources, and can take advantage of the advantages of building roofs;

4. On-site power generation and power supply can be generated without consuming fuel and erecting transmission lines;

5. High energy quality;

6. The construction period is short, and the time spent in obtaining energy is short.