Solar LED lighting system technologies and engineering design
The Solar LED lighting is a practical knowledge website that organically combines the design of LED solar lighting system with lighting technologies engineering application
Calculation of solar cell capacity The basic data required for solar cell capacity calculation are: (1) Determine all the load power and continuous working time, the rated working voltage of the load and whether there are special requirements. (2) Determine the geographic location of the solar cell module installation: longitude, latitude and altitude. (3) Meteorological…
The power of a solar cell module is proportional to the area of the solar cell, but the area of the solar cell is not exactly equal to the area of the solar cell package panel. Although some solar cell panels are large, the gaps in which the solar cells are arranged are very wide,…
The solar cell is made of high-crystalline silicon material, and the solar cell module is laminated with high-strength, light-transmitting solar-specific tempered glass and high-performance, UV-resistant special sealing material. It can be used normally in the harsh environment of ice, snow and temperature changes. In the process of use, solar cells are the most basic form…
As the materials of solar cells, III-V compounds are prepared from rare elements. Although the photoelectric conversion efficiency of solar cells made from this is very high, from the perspective of material sources, this type of solar cells will not be able to dominate in the future. The other two types of solar cells, nanocrystalline…
In order to find alternatives to monocrystalline silicon cells, in addition to polycrystalline silicon and amorphous silicon thin-film solar cells, people continue to develop solar cells of other materials. Among them are mainly arsenic compounds like III-V, cadmium sulfide, cadmium sulfide and copper-indium-selenium thin-film batteries. Multi-element compound solar cells refer to solar cells that are…
The two key issues in the development of solar cells are: improving conversion efficiency and reducing costs. Because of its low cost and easy mass production, amorphous silicon thin-film solar cells are generally valued and developed rapidly. As early as the early 1970s, Carlson and others had already started the research and development of amorphous…
Although monocrystalline silicon solar cells have their advantages, their high price hinders the development of monocrystalline silicon solar cells in the low-price market. The problem that polycrystalline silicon solar cells need to solve is first to reduce costs, and secondly to efficiency. Although the crystalline structure of polycrystalline silicon solar cells is different from that…
Monocrystalline silicon solar cell is currently the fastest developed solar cell. Its structure and production process have been finalized, and its products have been widely used in space and on the ground. This solar cell uses high-purity monocrystalline silicon rods as raw materials. Since monocrystalline silicon solar cells are cut through cylindrical crystal fleece, they…
Silicon solar cells are divided into three types: monocrystalline silicon solar cells, polycrystalline silicon thin film solar cells and amorphous silicon thin film solar cells. Monocrystalline silicon solar cells have the highest conversion efficiency, the highest conversion efficiency in the laboratory is 24%, and the conversion efficiency during mass production is 15%. Silicon solar cell…
The electrical characteristics of solar cell modules mainly refer to the I-V output characteristics, as shown in Figure 1. The I-V characteristic of the solar cell is similar to the characteristic of the diode, generally called the I-V characteristic curve. The focus on the I-V curve is: short-circuit current (Isc), open-circuit voltage (Voc) and maximum power…