The Active Harmonic Filter AHF unit is an electronic measuring instrument used in natural science-related engineering and technical fields.
During the spurious emission process of communication equipment, the wireless communication signals in the GSM, GSMR and CDMA frequency bands are filtered, which generally consists of capacitors, resistors and inductors.
During the operation of the AHF Harmonic Filter unit, the capacitor will dissipate a large amount of heat, which will cause damage to other electrical components.
Damage, the existing methods are mostly scattered installation of electrical components to ensure ventilation and heat dissipation, but doing so will greatly increase the volume of the device, thereby increasing the cost of land occupation. Therefore, there is an urgent need to design a compact LCL filter unit to solve the above problems.
The utility model patent provides a compact LCL filter unit; it includes an installation frame; the side inner wall of the installation frame is integrally formed with positioning strips distributed at equal distances, and the top outer wall of the positioning strip is slidably connected with a heat insulation board and a Equidistantly distributed mounting plate, the top outer wall of the mounting plate is clamped with equidistantly distributed resistors and inductors, and the top outer wall of the heat shield is clamped with equidistantly distributed capacitors, and the side outer wall of the mounting frame is clamped. Two side plates are clamped on the top, and a top plate is clamped on the top outer wall of the mounting frame. The utility model adopts the heat insulation plate to completely isolate the capacitor from other electrical components, and adopts two separate radiators to dissipate heat from the capacitor and other electrical components respectively, which can effectively avoid the heat problem caused by the compact installation, so that the filter unit, the volume of the device is reduced by two to three times, which greatly reduces the floor space cost of the device.
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