The inverter will keep generating heat when running electrical appliances. If the inverter is not supported by a strong cooling system, its working efficiency will be greatly reduced.
The inverter cooling system mainly includes radiators, cooling fans, thermal grease and other materials.
At present, there are two main methods of heat dissipation for inverters: one is natural cooling, and the other is forced air cooling.
1) Natural cooling
Natural cooling refers to the realization of local heating devices dissipating heat to the surrounding environment to achieve temperature control without using any external auxiliary energy. This usually includes three main heat transfer methods: thermal conduction, convection and radiation and convection is the main method.
Natural heat dissipation is often suitable for low-power devices and components that do not have high temperature control requirements, the heat flux density of device heating is not large, and sealed or densely assembled devices are not suitable (or do not need) to use other cooling technologies.
2) Forced air cooling
Forced air cooling is mainly a method that uses fans to force the air around the device to flow, thereby taking away the heat emitted by the device.
It is a heat dissipation method that is easy to operate and has obvious results.
This cooling method can be used if the space between the components within the assembly is suitable for air flow or for the installation of local heat sinks.
The method to improve the forced convection heat transfer capacity is to increase the heat dissipation area and generate a relatively large forced convection heat transfer coefficient on the heat dissipation surface. Increasing the heat dissipation area on the surface of the radiator to enhance the heat dissipation of electronic components has been widely used in practical engineering.
In the project, fins are mainly used to expand the heat dissipation area of the radiator surface to achieve the purpose of enhancing heat transfer. The selection of the material of the radiator itself is directly related to its heat dissipation performance.
At present, the material of the radiator is mainly copper or aluminum, and its extended heat exchange surface is made by folding fins/stamping thin fins and other processes.