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What are the factors affecting the power generation of pv solar panels?


Published by Mars June 18,2019

     With the awareness of new energy pv solar panels power generation, pv solar panels power generation has become more and more popular, and many households have installed pv solar panels power generation systems. The accompanying problems have also followed. The installation of the same power pv solar panels power station, the same installation process, the use of the same equipment, the annual total power generation is slightly different, when the total amount of pv solar panels power generation is affected, the corresponding power station benefits are also affected influences. What factors affect the total amount of solar panel output? Mas Solar tells you what factors affect the solar panel output.

                                             solar panel output

    The first factor is the amount of solar radiation. Under the same solar panel output, the amount of power generation depends on the intensity of the light, and the amount of solar radiation is proportional to the power generation of the solar system for house. That is, the more the sun is shining, the higher the power generation for solar system for house.


     The lighting conditions of the same area are the same, the inclination angle of the installed solar photovoltaic modules is different, and the amount of solar radiation received by the photovoltaic panels is different. The amount of photovoltaic panel radiation can be increased by adjusting the inclination of the photovoltaic panels or adding tracking equipment.In combination with the solar light resources and the longitude and latitude of the location where the pv panels modules are used, the tilt angle of the solar pv panels is the same as the latitude.

                                                        solar panel output

    The second factor is the power attenuation of solar pv panels. Pv panels power attenuation refers to the phenomenon that the output power of pv panels decreases as the illumination time increases. This is related to the characteristics of the pv panels  itself, such as the aging of the photovoltaic leads to component power attenuation, component power attenuation caused by destructive factors, and the like.


    The third factor is the matching of PV modules in series and parallel. Any series connection will cause current loss due to the current difference of the components; any parallel connection will cause voltage loss due to the voltage difference of the components;

   The fourth factor is temperature characteristics. The temperature rises by 1 °C, crystalline silicon solar cells: the maximum output power drops by 0.04%, the open circuit voltage drops by 0.04% (-2mv/°C), and the short-circuit current rises by 0.04%. In order to avoid the influence of temperature on the amount of power generation, the solar array should be kept well ventilated.

                                             solar panel output

   The fifth factor is some components of the solar array power plant equipment are blocked. The factors of occlusion are various, such as trees, dust, buildings, and so on. Some of the solar array that are blocked are likely to cause hot spot effects and affect the power generation of the power station. According to estimates, the dust loss of the power station may reach 6%! According to the circuit principle, when the solar array are connected in series, the current is determined by the least one block, so if there is a shadow, it will affect the power generation of this solar array. Therefore, the solar array need to be cleaned regularly to reduce dust occlusion.

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