Active power filter device based on voltage closed-loop control

Abstract

The invention relates to an active power filter device based on voltage closed-loop control. The device comprises a filter shell, a front-end double-door leaf and a rear-end door leaf, the front-end double-door leaf and the rear-end door leaf are respectively positioned at the front end and the rear end of the filter shell and are movably connected with the filter shell; heat dissipation holes areformed in the side wall of the filter shell, clamping plates extending up and down are arranged at the positions, close to the two side edges, of the outer side of the side wall of the filter shell respectively, heat conduction covers are connected to the clamping plates in a sliding and clamping mode, refrigeration modules are arranged in the heat conduction covers, and the heat conduction covers cover the outer sides of the heat dissipation holes. The bottom of the filter shell is hollow and is connected with a bottom bin, a heat exchange fan is arranged in the bottom bin, and the lower endof the heat conduction cover is open and is communicated with the bottom bin. By means of the device, it can be guaranteed that the device has excellent heat dissipation efficiency, and the device can be suitable for various ground installation conditions.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to an active power filter device based on voltage closed-loop control. Background technique [0002] Active power filter is a new type of power electronic device used to dynamically suppress harmonics and compensate reactive power. It can quickly track and compensate harmonics of different sizes and frequencies. The source LC filter can only passively absorb harmonics of fixed frequency and size. APF can control and actively output the size, frequency and phase of the current by sampling the load current and separating each harmonic and reactive power, and Quick response, offset the corresponding current in the load, realize dynamic tracking compensation, and can not only compensate harmonics but also compensate reactive power and unbalance. [0003] However, since the active filter in the prior art has more internal electronic components, the space inside the casing ...

AI Technical Summary

Problems solved by technology

[0005] The above technical solution has the following technical defects: electrical cabinets, especially active power filter devices, are usually installed on hard surfaces such as concrete floors, and it is difficult to construct buried radiators under such ground conditions. The position of the source power filter device changes, and it is difficult to connect the buried radiator to the cabinet of the active power filter device, making the buried radiator unusable

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