Solar photovoltaic power generation system is a technology that converts light energy into electrical energy. It meets the energy needs of various fields of human beings by converting sunlight into electrical energy. However, with the development of the times and the continuous updating of technologies, solar photovoltaic power generation systems are facing various challenges. One of them is the temperature effect.

Temperature is one of the most important environmental factors for solar photovoltaic systems. The higher the temperature of the photovoltaic cell, the faster its performance will degrade, and the lower the power generation efficiency will be. Since photovoltaic cell modules are usually installed outdoors and are greatly affected by the external climate, the operating temperature of photovoltaic cells is constantly changing. If not controlled, this variation can greatly reduce the power generation efficiency and working life of a solar photovoltaic system.

In a solar photovoltaic power generation system, the temperature effect of photovoltaic cells is one of the main factors affecting the power generation efficiency of the system. Current research shows that when the operating temperature of the solar panel is 25°C, its output power is maximum. And when the temperature is higher or lower than 25°C, the output power will decrease as the temperature increases or decreases.

The temperature effect of photovoltaic cells is mainly reflected in two aspects: battery temperature and photoelectric performance. An increase in battery temperature will lead to a decrease in carrier concentration, a decrease in the internal electric field of the photovoltaic cell, and an increase in electrode impedance, thereby reducing the performance of the photovoltaic cell. Photoelectric performance includes the spectral response of the battery, photogenerated current, photogenerated voltage, peak power and other indicators. Through the study of photoelectric performance, the design and manufacture of photovoltaic cells can be further optimized, and the stability of temperature effects and power generation efficiency can be improved.

In order to deal with the temperature effect in the solar photovoltaic power generation system, various related technologies and measures have emerged. A temperature control technology for solar panels is to realize real-time monitoring and automatic control of the panel temperature by adding a thermistor. There is also a solar photovoltaic power generation system that uses water as a heat dissipation medium, which can effectively reduce the operating temperature of the battery panel and improve the power generation efficiency of the system. In addition, the temperature resistance of photovoltaic cells can be improved by optimizing the manufacturing process and material selection of photovoltaic cells, so as to improve the influence of temperature effects on system power generation.

Therefore, it is of great significance to study the temperature effect of solar photovoltaic power generation system. Through in-depth research on the temperature effect characteristics and mechanism of photovoltaic cells, it can bring further technological innovation and development opportunities for the manufacture and application of photovoltaic cells, and also provide strong support for promoting the popularization and application of solar photovoltaic power generation technology.

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