How does photovoltaic equipment cooling down

     Photovoltaic inverter is the core equipment of photovoltaic system. Its main function is to turn the DC power generated by photovoltaic modules into AC power that meets the requirements of power grid. As a power electronic equipment, inverter, like all electronic products, faces the challenge of temperature. A survey report from the overall avionics research project of the U.S. Air Force shows that up to 55% of all electronic product failure cases are caused by temperature.

    The electronic components inside the inverter are also very sensitive to temperature. According to the 10 degree rule of reliability theory, the service life will be halved for every 10 degree increase in temperature from the room temperature, so the thermal design of the inverter is very important.

    Traditional heat dissipation methods include passive heat dissipation and air-cooling heat dissipation. Passive heat dissipation is natural cooling. Natural cooling is often applicable to low-power devices and components with low requirements for temperature control and low heat flux. Air cooling is mainly a method of forcing the air around the device to flow with the help of fans, so as to take away the heat emitted by the device. Air cooling heat dissipation can be applied in a wide range, but there are also problems such as excessive noise and dust accumulation.

     As for the problems of air cooling , liquid cooling solutions are well solved. The efficiency of liquid cooling is higher than that of air cooling, and the core temperature is transferred to the outside or away from the core, so as to ensure that the overall temperature of the core components decreases and will not accumulate heat. The relatively closed space makes the equipment free from dust. In addition, liquid cooling thermal system have the characteristics of long life and stability, and the later maintenance will not be too frequent.

       Liquid cooling solution  is a major trend in the field of cooling . Although it also has the disadvantages of high cost and narrow coverage, with the production and development, more and more industries will accelerate the research and innovation of liquid cooling . So that more industries can use better liquid cooling solutions.