Professional High Power Cooling Solution Service Provider And Heat Sink Manufacturer

Photovoltaic Inverter Thermal Solutions

Lori is a professional high power heat sink manufacturer, we can provide inverter thermal solutions for you.

Thermal Solutions for Photovoltaic Inverter

Lori is a professional high power heat sink manufacturer. We have a first-class thermal design development team and reliable thermal simulation, thermal testing capabilities, which provide inverter thermal solutions for many domestic and foreign enterprises in the photovoltaic industry, and we provide professional thermal technical service support for them for a long time.

Photovoltaic inverter, also known as the power regulator, is the core equipment in the photovoltaic power generation system. Its role is to convert the direct current output of solar panels into alternating current that meets the requirements of the grid, and is transmitted to the grid or electrical equipment. This process is called inverter. In the solar power generation system, with the increase of the capacity of the battery and the continuous development of photovoltaic technology, the power density of the photovoltaic inverter is getting higher and higher, and the electronic components in the photovoltaic inverter will generate a lot of heat during operation. If these heat can not be effectively distributed and controlled, it will have an adverse impact on the performance and service life of the photovoltaic inverter, which will affect the photovoltaic system. Therefore, in view of the heat dissipation problem of photovoltaic inverters, Lori has proposed the following thermal solutions for photovoltaic inverters.

The thermal solutions of photovoltaic inverter is mainly divided into two methods: natural cooling and forced air cooling.

Natural Cooling

Natural cooling is a more common way of thermal solutions. It relies on the heat conduction, natural convection and radiation of the heat sink material to dissipate heat without the use of any external auxiliary energy. Natural cooling is suitable for low-power devices and components that do not require high temperature control, and for sealed or densely assembled devices where other cooling techniques are not appropriate (or required). At present, the mainstream single-phase inverters and three-phase inverters below 20kW on the market mainly use natural cooling. The advantage of natural cooling is low noise, but the heat dissipation rate is slow, which is usually used for low-power inverters. Naturally cooled heat sink are mainly copper-aluminum spatula fins, aluminum extrusion fins, CNC machining fins, die-cast fins and so on.

Forced Air Cooling

By forcing the air around the device, such as a fan, the heat emitted by the electronic components in the inverter is conducted out. And through the heat dissipation fan to distribute heat to the environment, this forced air cooling cooling scheme is easy to operate, low cost, easy maintenance, good heat dissipation effect, very suitable for high-power inverters. The space between the components in the inverter is suitable for air flow or for the installation of local heat sink or fan heat dissipation, and the heat dissipation efficiency of the electronic components of the photovoltaic inverter is improved by increasing the heat dissipation area and generating a relatively large forced convection heat transfer coefficient on the heat dissipation surface. Therefore, high-power photovoltaic inverters can use forced air cooling solution.

Comparison of Two Thermal Solutions

1. Natural cooling without fan, low noise, but slow heat dissipation, generally used for low-power photovoltaic inverters. Forced air cooling should be configured with fans, which is noisy, but the heat dissipation speed is fast, generally used for high-power inverters. In the medium power series inverter, both methods are available. Through the comparison experiment of the heat dissipation capacity of the series inverter, it is found that the forced air cooling effect of the series inverter above 50kW power level is better than the natural cooling thermal solution, and the temperature of the key components such as the internal capacitor of the inverter and IGBT is reduced by about 20℃, which can ensure the long life and efficient work of the inverter. The inverter with natural cooling thermal solution has a higher temperature and a lower component life.


2. Forced air cooling also has two kinds of high-speed fans and medium-speed fans. The use of high-speed fans can reduce the volume and weight of the heat sink, but it will increase the noise, and the fan life is shorter; The medium speed fan is used, and the heat sink is slightly larger, but at low power, the fan does not turn, and the fan runs at low speed at medium power. In fact, the full power operation time of the inverter is not much, so the life of the fan can be very long.

Lori's Photovoltaic Inverter Heat Sinks

Lori customizes processing of photovoltaic inverter heat sinks for you, welcome to contact us!

Chat Online 编辑模式下无法使用
Leave Your Message inputting...