Solar contorl system --- Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to directly convert solar energy into electrical energy. Regardless of whether it is used independently or connected to the grid for power generation, photovoltaic power generation systems are mainly composed of solar panels (components), controllers and inverters. They are mainly composed of electronic components, but do not involve mechanical components.
Therefore, photovoltaic power generation equipment is extremely refined, reliable, stable, long-lived, and easy to install and maintain. In theory, photovoltaic power generation technology can be used in any occasion where power is needed, from spacecraft to household power sources, as large as megawatt power stations, as small as toys, and photovoltaic power sources can be ubiquitous.
Delivery method
Solar photovoltaic power generation is divided into independent photovoltaic power generation, grid-connected photovoltaic power generation, and distributed photovoltaic power generation , solar contorl system has all kinds of type.
Independent photovoltaic power generation
Independent photovoltaic power generation system is also called off-grid photovoltaic power generation system. It is mainly composed of solar cell components, controllers, and storage batteries. If you want to supply power to AC loads, you also need to configure an AC inverter.
Grid-connected photovoltaic power generation
Grid-connected photovoltaic power generation system means that the direct current generated by solar modules is converted into alternating current that meets the requirements of the mains power grid by a grid-connected inverter and then directly connected to the public grid. Grid-connected photovoltaic power generation systems have centralized large-scale grid-connected photovoltaic power stations, which are generally national-level power stations. The main feature is that the generated energy is directly transmitted to the grid, and the grid is uniformly deployed to supply power to users. However, this kind of power station has a large investment, a long construction period, and a large area, and its development is relatively difficult. However, distributed small grid-connected photovoltaic systems, especially photovoltaic building integrated power generation systems, are the mainstream of grid-connected photovoltaic power generation due to the advantages of small investment, fast construction, small footprint, and large policy support.
Distributed photovoltaic power generation
Distributed photovoltaic power generation system, also known as distributed power generation or distributed energy supply, refers to the configuration of a smaller photovoltaic power supply system at the user site or close to the power site to meet the needs of specific users and support the economics of the existing power distribution network Run, or meet the requirements of these two aspects at the same time.
The solar contorl system --solar photovoltaic power generation system is composed of solar battery packs, solar controllers, and storage batteries (groups). If the output power is AC 220V or 110V, an inverter is also required. The role of each part is:
(1) Solar panels of solar contorl system : Solar panels are the core part of the solar power system and the most valuable part of the solar power system. Its function is to convert the sun's radiation capacity into electric energy, or send it to the storage battery for storage, or drive the load to work.
(2) Solar controller of solar contorl system: The function of the solar controller is to control the working state of the entire system, and to protect the battery from overcharging and over-discharging. In places with large temperature differences, a qualified controller should also have the function of temperature compensation. Other additional functions such as light control switch and time control switch should be optional options of the controller;
(3) Batteries of solar contorl system: generally lead-acid batteries, nickel-hydrogen batteries, nickel-cadmium batteries or lithium batteries can also be used in small and micro systems. Its function is to store the electric energy generated by the solar panel when there is light, and then release it when needed.
(4) Inverter of solar contorl system: The direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to provide electrical energy to 220VAC electrical appliances, the DC power generated by the solar power generation system needs to be converted into AC power, so a DC-AC inverter is required.
