The solar panel produces DC voltage.
Solar panels are devices that absorb sunlight and convert solar radiation energy directly or indirectly into electrical energy by photoelectric effect or photochemical effect. The main material of most solar panels is silicon. Solar panels are green products, more energy efficient and more environmentally friendly.
The photovoltaic inverter must be capable of producing a constant voltage value within the permitted fluctuation range of the specified input DC voltage. For medium and small independent optical fast power plants, the general transmission radius is less than 2km, and the output voltage of the inverter is selected to be single-phase 220V and three-phase 380V, without increasing the voltage or transmitting it to the users.
Indetailed information:
1. Do not install solar modules in shaded locations such as trees and buildings, or near open flames or flammable objects. The assembly structure must be able to adapt to environmental requirements. Please choose appropriate materials and anti-corrosion treatments, and use a strong and reliable method to install components. If the components fall from high altitude, they will cause financial damage.
2. Components cannot be disassembled, bent or hit with hard objects. Avoid stepping on components and other dangerous actions.
3. Use spring washers and flat washers to lock the entire panel to the bracket. It is best to install the solar panel at an angle of about 30 degrees toward the sun. the state of the assembly support structuree Wire the panel components appropriately.
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Solar panels can convert thermal energy directly into electrical energy.
Solar power generation methods There are two solar power generation methods: one is the light-heat-electricity conversion method and the other is the light-direct conversion method. electricity.
(1) The light-heat-electricity conversion method uses thermal energy generated by solar radiation to produce electricity. Generally, a solar collector converts the absorbed thermal energy into steam as the working fluid and then drives it away. a steam turbine to produce electricity. The first process is a light-heat conversion process; the second process is a heat-to-electricity conversion processyou.
(2) The direct light-to-electricity conversion method uses the photoelectric effect to directly convert solar radiation energy into electrical energy. The basic device for converting light into electricity is the solar cell.
According to currently known technology, only photovoltaic solar panels can directly convert the sun's radiant heat into electrical energy. Thermoelectric conversion materials directly convert thermal energy into electrical energy. It is a completely solid energy conversion method that does not require chemical reactions or fluids.
Therefore, there is no noise, no wear, no media leakage and no volume during the power generation process. It has the advantages of small size, light weight, easy movement and long service life. He is “irreplaceable” in dospecial applications such as military batteries, long-range space sensors. , long-distance communications and navigation, and microelectronics. “Generation” status.
Detailed information:
The composition of solar panels and the functions of each part:
(1) Tempered glass: Its function is to protect the main body of energy production (such as the cells of battery). There are requirements for its light transmission selection:
(2) EVA: used for bonding. The tempered glass and the main power generation body (battery cells) are fixed together. The quality of the transparent EVA material directly affects the life of the EVA component exposed to air. to aging and yellowing, which affect the light transmission of the component and thus affect the power generation quality of the component. In addition toquality of the EVA itself, the module manufacturer's lamination process also has a great impact on the adhesion of the EVA. The EVA does not conform to the standards, and the bonding force between the EVA and the tempered glass and the backplane is insufficient, this will cause the EVA to prematurely age and affect the service life of the module. p>
(3) Cells: The main one. The function is to produce electricity. The main market for power generation is crystalline silicon solar cells and thin-film solar cells, both of which have their own advantages and disadvantages.
Crystalline silicon solar cells have relatively low equipment costs. but the consumption and costs of cells are high, but the photoelectric conversion efficiency is also high, which makes them more suitable for power generation under outdoor sunlight.
The cellsThin-film solar panels have relatively low equipment costs. High, but. the battery consumption and cost are very low, but the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the low light effect is very good, and it can also generate light electricity under ordinary light, such as solar cells on computers
(4) Backplane: Functions, sealing, insulation, waterproofing Generally, TPT, TPE and other materials are used and must be resistant to aging. Most component manufacturers have a 25-year warranty. and aluminum alloy generally pose no problem. The key is that it depends on whether the backplate and silicone can meet the requirements.
(5) Aluminum alloy: protects the laminate and plays a certain sealing and supporting role.
(6) Junction box. : Prosupports the entire energy production system and acts as a power transfer station. If any component is shorted, the junction box automatically disconnects the shorted battery string to prevent burning. of the entire system. The most critical thing in the junction box is the diode selection. Depending on the type of battery cells in the component, the corresponding diodes are also different
(7) Silicone: sealing function, used to seal the junction between the component and the aluminum alloy frame , the component and the junction box. Some companies use double-sided tape and foam is commonly used in China. easy to use and the cost is very low
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