What factors affect the back power generation efficiency of double-sided double-glass n-type monocrystalline solar photovoltaic module?
Publish Time: 2025-03-13
As a leader in the current photovoltaic field, double-sided double-glass n-type monocrystalline solar photovoltaic module has received widespread attention and application for its high efficiency, stability, and strong weather resistance. Among them, its double-sided power generation characteristics have become an important means to increase the power generation of the system. However, the back power generation efficiency of double-sided double-glass n-type monocrystalline solar photovoltaic module is not static, it is affected by many factors. This article will deeply explore these factors in order to better understand and optimize the back power generation efficiency of double-sided double-glass n-type monocrystalline solar photovoltaic module.First, the surface reflectivity is one of the key factors affecting the back power generation efficiency of double-sided double-glass n-type monocrystalline solar photovoltaic module. The back of the module uses reflected light or scattered light from the ground to generate electricity. Therefore, the higher the ground reflectivity, the stronger the light received by the back of the module, and the better the power generation effect. Different ground types, such as grass, concrete, sand, snow, etc., have different reflectivities, which significantly affect the power generation efficiency of the back side of the module. For example, snow can significantly improve the power generation efficiency of the back side of the bifacial photovoltaic module due to its high reflectivity.Secondly, the installation height and inclination of the module are also important factors affecting the power generation efficiency of the back side. Properly increasing the installation height of the module helps to increase the uniformity of the irradiation on the back side of the module, thereby increasing the power generation. At the same time, the selection of the installation inclination angle also needs to be comprehensively considered according to factors such as local latitude, seasonal changes, and solar radiation conditions. A reasonable installation inclination angle can ensure that both the front and back sides of the module can receive solar radiation to the greatest extent, thereby improving the power generation efficiency of the entire system.In addition, the performance parameters of the double-sided double-glass n-type monocrystalline solar photovoltaic module itself, such as bifaciality and conversion efficiency, will also affect the power generation efficiency of the back side. Bifaciality refers to the power generation probability of the back side of the module, which reflects the ability of the back side of the module to convert light into electrical energy. Photovoltaic modules with high bifaciality naturally have higher power generation efficiency on the back side. Conversion efficiency is an important indicator to measure the ability of photovoltaic modules to convert solar radiation into electrical energy. Photovoltaic modules with high conversion efficiency will have higher overall power generation efficiency (including front and back).In addition to the above factors, environmental factors such as temperature, humidity, dust, etc. will also have a certain impact on the back power generation efficiency of double-sided double-glass n-type monocrystalline solar photovoltaic module. For example, in a high temperature environment, the conversion efficiency of photovoltaic modules will decrease, thereby affecting the back power generation efficiency. Pollutants such as dust may block the surface of the module, reduce the amount of incident light, and also reduce the back power generation efficiency.In summary, the back power generation efficiency of double-sided double-glass n-type monocrystalline solar photovoltaic module is affected by many factors such as surface reflectivity, module installation height and inclination, module performance parameters and environmental factors. In practical applications, we need to comprehensively consider these factors, and maximize the back power generation efficiency of double-sided double-glass n-type monocrystalline solar photovoltaic module by optimizing module design, selecting appropriate installation location and inclination, and strengthening module maintenance, so as to achieve higher system power generation.
