Classification, composition and working principle of solar photovoltaic system

Solar photovoltaic systems are mainly divided into off-grid photovoltaic power generation systems and grid-connected photovoltaic power generation systems.

1. The home off-grid solar system is mainly composed of solar cell components, controllers, and batteries. To supply power to the AC load, an AC inverter needs to be configured.
2. The grid-connected photovoltaic power generation system provided by the grid-connected solar system supplier is that the direct current generated by the solar module is converted into the alternating current that meets the requirements of the mains grid through the grid-connected inverter, and then directly connected to the public grid.

The composition of the solar photovoltaic system:

1. Solar panel

The grid-connected and off-grid solar panels are the core part of the solar photovoltaic system. The function of the solar panels is to convert the light energy of the sun into electrical energy, and then output the direct current and store it in the battery. The solar panel is one of the most important components in the solar photovoltaic system, and its conversion rate and service life are important factors that determine whether the solar cell has use value.

2. Controller
The solar controller is composed of a dedicated processor CPU, electronic components, displays, switching power tubes, etc.

3. Battery
The function of the battery is to store the electrical energy emitted by the solar panel when there is light, and release it when needed.

4. Inverter
The direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to provide power to 220VAC electrical appliances, it is necessary to convert the DC power generated by the solar photovoltaic system into AC power, so a DC-AC inverter is required.