Photovoltaic inverter is a type of power electronic device that converts direct current......
Photovoltaic inverter is a type of power electronic device that converts direct current generated in photovoltaic modules into alternating current. In solar power generation systems, the efficiency of inverters is an important factor determining the performance of solar photovoltaic systems. If the photovoltaic inverter malfunctions, it will cause the photovoltaic system to shut down, resulting in huge loss of power generation. Therefore, high reliability is one of the important technical indicators to measure the photovoltaic inverter.Due to the rated operating temperature of all the components in the inverter, if the heat dissipation function of the inverter is poor and the inverter continues to operate, the heat of the components cannot be transferred to the outside world. Ultimately, if the temperature of the components is too high, it will affect the function and lifespan of the components. Therefore, thermal conductive interface materials need to be used to transfer the heat inside the inverter. The basic components of photovoltaic inverters include resistors, capacitors, diodes, power devices (IGBT or MOS tubes), inductors and transformers, current sensors, ICs, optocouplers, relays, etc. The inverter cooling system mainly includes heat sinks, cooling fans, and thermal interface materials. The commonly used thermal interface materials are as follows:
1. Thermal conductive silicone grease: low thermal resistance, fast heat dissipation;
2. High thermal conductivity silicon film: With high deformation coefficient, it can reduce the thermal resistance of interface materials to a very low level.
Highway toll stations usually use industrial control computers, abbreviated as industrial control computers, which are equipped with dedicated toll software to ensure continuous and uninterrupted operation 24 hours a day. In addition, this computer also has many dedicated boards installed to control lane equipment, such as railing machines, lane capture cameras, canopy signal lights, voice fee displays, yellow alarm signal lights, access card readers, ticket printers, etc., with a complex structure. The fanless industrial control computer chassis adopts a metal structure, which not only has high anti magnetic, dust, and impact resistance, but also has efficient heat dissipation ability. Its internal structure uses aluminum or pure copper blocks for heat dissipation as the direct contact surface of the CPU, with a layer of thermal conductive silicone film attached to it. The thermal conductive silicone film directly contacts the fins of the large-area aluminum profile, transferring the heat emitted by the CPU directly to the large-area aluminum profile fins, creating an efficient heat dissipation method.
