How inverters cope with persistent high temperatures

Recently, high-temperature weather has occurred frequently, and the temperature in many places has exceeded 40 °C. Many customers have a misunderstanding: there is plenty of sunshine in summer, so is the power generation of photovoltaic power plants higher?

In fact, the power generation of photovoltaic power plants is determined by many factors, among which the key factors are irradiance and ambient temperature. Hot summer is often accompanied by high temperature, not high irradiance. The temperature characteristics of solar modules are negative temperature coefficients, and the power generation performance of modules will decrease as the temperature increases. Therefore, the peak power generation of photovoltaic power plants often occurs in late spring and early summer or late summer and early autumn. At this time, the ambient temperature is suitable and the irradiance is high, which achieves the best conditions for photovoltaic power generation.

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In addition, the inverter is usually installed outdoors, even in direct sunlight, and the internal temperature of the inverter will increase accordingly in the high temperature environment in summer. The high temperature environment may also cause the inverter to over-temperature and load-drop protection, affecting the power station. power generation. Therefore, the heat dissipation performance of the inverter is one of the important factors affecting the power generation efficiency and service life. Next, I will introduce how the inverter can better cope with high temperature weather.
01 ensure air circulation

Ensure smooth air circulation around the inverter. Do not install the inverter in a small and closed environment. If multiple inverters are installed on the same plane, it is necessary to ensure that there is enough distance between each inverter. This not only It can ensure the ventilation and heat dissipation of the inverter, and there is enough operating space for later maintenance.

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02 Avoid the wind and the sun
03 Pay attention to post-maintenance

After the inverter is installed, it is necessary to pay attention to the later maintenance, and regularly clean the fan, fan cover or heat sink to ensure the heat dissipation and cooling of the inverter. Usually, the inverter will use intelligent air cooling technology to dissipate heat, and the fan will intelligently adjust the speed according to the internal temperature of the inverter. When the inverter works in a high temperature environment, the intelligent air cooling technology can effectively reduce the probability of load reduction. The inverter can run stably while extending the service life of the fan.

In addition, the inverter has a fan fault alarm function. The operation and maintenance personnel can receive the alarm information in the monitoring background, quickly and accurately locate the fault, which is convenient for the operation and maintenance personnel to eliminate the fan fault in time, reduce the power generation loss, and ensure the power generation income.

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