An 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, which includes a filter housing, a front double door leaf and a rear door leaf, and the front double door leaf and the rear door leaf are respectively located at the front end and rear end of the filter housing The side wall of the filter housing is provided with cooling holes, and the outside of the side wall of the filter housing is respectively provided with clamping plates extending up and down near the two side edges. A heat conduction cover is slid and clipped on the plate, and a refrigeration module is arranged inside the heat conduction cover, and the heat conduction cover is covered outside the heat dissipation hole; the bottom of the filter housing is hollowed out and connected with a bottom compartment, and the bottom compartment is provided with As for the heat exchange fan, the lower end of the heat conduction cover is open and communicated with the bottom chamber. The device of the invention can not only ensure that the device has excellent heat dissipation efficiency, but also make the device 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 ...

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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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