CN211351268U

CN211351268U - Large capacity active filter layout structure

Info

Publication number: CN211351268U
Application number: CN202020133375.6U
Authority: CN
Inventors: 张勇迁; 郭协恩
Original assignee: Shenzhen Enjoy Technology Co ltd
Current assignee: Shenzhen Enjoy Technology Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-08-25
Anticipated expiration: 2030-01-20

Abstract

The utility model discloses a layout structure of a large-capacity active filter, which comprises a rectangular main shell, wherein the rectangular main shell comprises a T-shaped main frame, a front panel, a rear panel and a cover plate which are spliced with each other; the lower layer space is provided with mutually independent inductance components side by side, one side of the inductance components close to the front panel is provided with a first cooling fan, and the rear panel is provided with an output terminal; the upper layer space is sequentially provided with a capacitance plate, an IGBT assembly, a control plate, a power supply plate and an interface plate along the direction from the front panel to the rear panel, and the upper layer space also comprises a radiator which is arranged in the lower layer space; a second cooling fan is arranged on the rear panel corresponding to the upper layer space; the output terminal is electrically connected with the interface board through a copper bar, and the front panel and the rear panel are provided with heat dissipation holes. The utility model discloses technical scheme improves traditional active filter's overall arrangement structure, improve equipment reliability and thermal diffusivity.

Description

Large capacity active filter layout structure

Technical Field

The utility model relates to an active filter technical field, in particular to large capacity active filter layout structure.

Background

The active filter is a new type of power electronic device for dynamically inhibiting harmonic wave and compensating reactive power, and can quickly track and compensate the harmonic waves with different sizes and frequencies. The active filter can control and actively output the size, frequency and phase of current by sampling load current and separating each harmonic from reactive power, and quickly respond to offset corresponding current in the load, thereby realizing dynamic tracking compensation, and not only compensating harmonic but also compensating reactive power and unbalance. At present, in the power electronic industry, active filter manufacturers design and produce more, and when the active filter is designed, because devices are more, the size is larger, the power density is large, the overall design layout is unreasonable, the heat dissipation capacity cannot be reasonably and effectively designed, and the maintainability is poor.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a large capacity active filter layout structure aims at improving traditional active filter's layout structure, reduces the volume, reduces the PCB board and uses, improve equipment reliability and thermal diffusivity, and easy to assemble dismantlement and later maintenance.

In order to achieve the above object, the present invention provides a layout structure of a large-capacity active filter, which comprises a rectangular main housing, wherein the rectangular main housing comprises a T-shaped main frame, a front panel, a rear panel and a cover plate which are spliced with each other, a partition board is installed in the T-shaped main frame along the horizontal direction, and the partition board divides the main housing into an upper layer space and a lower layer space; a plurality of groups of mutually independent inductance assemblies are arranged in the lower layer space side by side, a plurality of first cooling fans are arranged on one side, close to the front panel, of each inductance assembly side by side, and an output terminal is arranged on the rear panel; the upper layer space is sequentially provided with a capacitor plate, a plurality of groups of IGBT components, a control board, a power board and an interface board which are electrically connected with each other, and the radiator is correspondingly connected with the IGBT components one by one and arranged in the lower layer space; a second heat radiation fan is arranged on the rear panel corresponding to the upper layer space; the output terminal is electrically connected with the interface board through a copper bar, and heat dissipation holes are respectively formed in the front panel and the rear panel corresponding to the upper layer space and the lower layer space.

Preferably, the number of the first heat dissipation fans is set to five, the number of the second heat dissipation fans is set to one, and the first heat dissipation fans are installed side by side in a direction parallel to the front panel and the rear panel.

Preferably, the inductance assemblies are arranged in three groups, and the inductance assemblies are mounted side by side in a direction parallel to the front panel and the rear panel. Any one group the inductance subassembly includes an inductance mainboard, install inductance, relay board and the fuse of mutual electric connection on the inductance mainboard.

Preferably, a display screen is mounted on the front panel, and the display screen is electrically connected with the control panel.

Preferably, the heat dissipation hole is additionally provided with filter cotton at one side close to the inside of the main shell.

Preferably, the number of the IGBT modules and the number of the heat sinks are three, and the IGBT modules and the heat sinks are mounted side by side in a direction parallel to the front panel and the rear panel.

Compared with the prior art, the beneficial effects of the utility model are that: the upper layer and the lower layer of the structure in the main shell are independent radiating air channels, the lower layer of the front panel is provided with radiating holes for air inlet, and the inductance assembly is cooled by backward blowing through the first radiating fan. The upper front panel is also opened with the louvre for the air inlet equally to louvre inside face all adds has the filter pulp, prevents that the dust from getting into, has played good protection to device on the inside PCB circuit board. The service life of the whole machine is prolonged, and the machine is suitable for severe environments.

The inductance component is installed alone, contains inductance, relay board, fuse. The maintenance and the disassembly are convenient, the replacement can be carried out independently, the replacement cost is low, and the assembly efficiency is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic diagram of the overall structure of the active filter of the present invention;

fig. 2 is a schematic view of the lower-layer space installation structure of the active filter of the present invention;

fig. 3 is a schematic view of the upper space installation structure of the active filter of the present invention;

fig. 4 is a schematic view of the heat dissipation wind direction of the active filter of the present invention;

fig. 5 is the structural schematic diagram of the inductance assembly of the present invention:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

Referring to fig. 1 to 3, the layout structure of a large-capacity active filter provided in this embodiment includes a rectangular main housing, where the rectangular main housing includes a T-shaped main frame 1, a front panel 2, a rear panel 3, and a cover plate 4, which are spliced with each other, a partition plate 5 is installed in the T-shaped main frame 1 along a horizontal direction, and the partition plate 5 partitions the main housing into an upper-layer space and a lower-layer space; a plurality of groups of mutually independent inductance assemblies 6 are arranged in the lower layer space side by side, a plurality of first cooling fans 7 are arranged on one side, close to the front panel 2, of each inductance assembly 6 side by side, and an output terminal 8 is arranged on the rear panel 3; the upper layer space is sequentially provided with a capacitance plate 9, a plurality of groups of IGBT components 10, a control plate 11, a power supply plate 12 and an interface board 13 which are electrically connected with each other, and also comprises radiators 14 which are respectively connected with the IGBT components 10 in a one-to-one correspondence manner, wherein the radiators 14 are arranged in the lower layer space; a second heat radiation fan 15 is arranged on the rear panel 3 corresponding to the upper layer space; the output terminal 8 is electrically connected with an interface board 13 through a copper bar 16, and heat dissipation holes 17 are respectively formed in the front panel 2 and the rear panel 3 corresponding to the upper layer space and the lower layer space.

It should be noted that, the utility model discloses an improvement to active filter structural layout, active filter's circuit connection and theory of operation are prior art, and are not the utility model discloses an improvement point, no longer give unnecessary details here. In this embodiment, referring to fig. 4, the main housing is divided into two layers to form an independent heat dissipation air duct, the lower layer of the front panel 2 is provided with heat dissipation holes 17 for air intake, and the first heat dissipation fan 7 blows backwards to dissipate heat of the inductance assembly 6. The upper front panel 2 is also provided with heat dissipation holes 17 for air intake, and the heat dissipation holes 17 are additionally provided with filter cotton (not shown in the figure) close to one side inside the main shell, so that dust is prevented from entering, and devices on an internal PCB are well protected. The service life of the whole machine is prolonged, and the machine is suitable for severe environments.

Further, the number of the IGBT assemblies 10 and the number of the heat sinks 14 are set to three, respectively, and the IGBT assemblies 10 and the heat sinks 14 are mounted side by side in a direction parallel to the front panel 2 and the rear panel 3.

The number of the first heat dissipation fans 7 is set to five, the number of the second heat dissipation fans 15 is set to one, and the first heat dissipation fans 7 are installed side by side in a direction parallel to the front panel 2 and the rear panel 3. It should be noted that the inductance component 6 and the IGBT component 10 are main heat generating devices, the inductance component 6 is disposed in the lower space, and the heat sink 14 corresponding to the IGBT component 10 is also disposed in the lower space, so the first heat dissipation fan 7 in the lower space can be configured as a large fan and be disposed side by side to provide sufficient wind power for heat dissipation.

Further, the inductance assemblies 6 are arranged in three groups, and the inductance assemblies 6 are installed side by side in a direction parallel to the front panel 2 and the rear panel 3. Referring to fig. 5, any one set of the inductor assembly 6 includes an inductor main board 61, and the inductor main board 61 is mounted with an inductor 62, a relay board 63 and a fuse 64 electrically connected to each other. The inductance assembly 6 is independently installed, is convenient to maintain and disassemble, can be independently replaced, and has lower replacement cost and high assembly efficiency.

Further, a display screen 18 is installed on the front panel 2, the display screen 18 is electrically connected with the control board 11, and the working state of the active filter is checked by arranging the display screen 18.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A layout structure of a high-capacity active filter is characterized by comprising a rectangular main shell, wherein the rectangular main shell comprises a T-shaped main frame, a front panel, a rear panel and a cover plate which are spliced with one another, a partition plate is arranged in the T-shaped main frame along the horizontal direction, and the partition plate divides the main shell into an upper layer space and a lower layer space; a plurality of groups of mutually independent inductance assemblies are arranged in the lower layer space side by side, a plurality of first cooling fans are arranged on one side, close to the front panel, of each inductance assembly side by side, and an output terminal is arranged on the rear panel; the upper layer space is sequentially provided with a capacitor plate, a plurality of groups of IGBT components, a control board, a power board and an interface board which are electrically connected with each other, and the radiator is correspondingly connected with the IGBT components one by one and arranged in the lower layer space; a second heat radiation fan is arranged on the rear panel corresponding to the upper layer space; the output terminal is electrically connected with the interface board through a copper bar, and heat dissipation holes are respectively formed in the front panel and the rear panel corresponding to the upper layer space and the lower layer space.

2. The large capacity active filter layout structure of claim 1, wherein the number of the first cooling fans is set to five, the number of the second cooling fans is set to one, and the first cooling fans are installed side by side in a direction parallel to the front and rear panels.

3. The layout structure of large capacity active filter as claimed in claim 1, wherein the number of the inductance components is three, and the inductance components are installed side by side along the direction parallel to the front panel and the rear panel, and any one of the inductance components includes an inductance main board on which an inductance, a relay board and a fuse are installed, which are electrically connected to each other.

4. A large capacity active filter layout structure as claimed in claim 1, wherein a display screen is mounted on the front panel, and the display screen is electrically connected to the control board.

5. A layout structure of a large capacity active filter as claimed in claim 1, wherein the heat dissipation holes are added with filter cotton at one side close to the inside of the main housing.

6. The large capacity active filter layout structure of claim 1, wherein the number of the IGBT modules and the heat sink is set to three, respectively, and the IGBT modules and the heat sink are mounted side by side in a direction parallel to the front panel and the rear panel.