Solar inverters are the core equipment of solar power generation systems. Their main function is to convert the DC power generated by photovoltaic modules into AC power that meets the requirements of the grid. Nowadays, many people choose to install household solar inverter equipment. Directly converting solar energy into electricity is not only environmentally friendly, but also saves electricity bills. When using it, attention also needs to be paid to the maintenance of solar power system inverters. Today, we will explain how to improve the heat dissipation efficiency of the equipment, so as to achieve the effect of extending the service life of the equipment.
Firstly, we need to understand that the cooling system of the inverter mainly includes heat sinks, cooling fans, thermal grease and other materials. At present, there are two main types of inverter cooling methods: natural cooling and forced air cooling.
Natural cooling refers to the local heating device being heated to the surrounding environment without using any external auxiliary energy to achieve temperature control. This method usually includes three main heat transfer methods, namely conduction, convection, and radiation, among which natural convection is the main method.
Natural cooling or cooling is often used for low-power devices and components with low heat flux density and low temperature control requirements between components, as well as for devices that are sealed or densely assembled and not suitable for other cooling technologies.
Forced air cooling mainly relies on the flow of air around forced devices such as fans to take away the heat emitted by the device.
This method is a convenient and effective cooling method. If the space between internal components of the device is suitable for air flow or for installing local heat sinks or fan cooling, this cooling method can be used as much as possible.
After understanding the two cooling methods of solar power system inverter equipment, natural ventilation may be considered for inverter selection. Therefore, we will discuss the installation requirements of fan-cooled inverters here, because fan cooling requires external heat sinks for the inverter.
Therefore, installation space is required, and there should be enough gaps between the components of the inverter to ensure the flow of gas into the heat and make the gas circulate.
In fact, inverters are not just inverters, but also safety managers of photovoltaic power plants. Solar power system inverters also undertake the monitoring and protection of photovoltaic arrays and the grid, as well as the protection of external environment and human-machine interaction and other system-level functions.