CN216530569U

CN216530569U - But dilatation SVG water-cooling power module device

Info

Publication number: CN216530569U
Application number: CN202123142248.6U
Authority: CN
Inventors: 庞清帅; 赵倩; 娄彦涛; 许崇福
Original assignee: China XD Electric Co Ltd; Xian XD Power Systems Co Ltd
Current assignee: Xi'an Xidian Power Electronics Co ltd; China XD Electric Co Ltd; Xian XD Power Systems Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-13
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a scalable SVG water-cooling power module device, wherein a cavity structure is arranged in the middle of a power module mounting rack, a capacitor component is fixed at the bottom in the power module mounting rack, a cooling box body is arranged at the upper end of the capacitor component in the power module mounting rack, an IGBT assembly component is arranged at one side of the cooling box body, a PMC board component is arranged at one side of the capacitor component, the power module mounting rack is used as an integral mounting frame, the capacitor component, the PMC board component and the IGBT assembly component are arranged in the power module mounting rack, electric primary and secondary isolation is realized through internal structure optimization of a power module, cooling liquid is arranged in the cooling box body, the IGBT assembly component is arranged at one side of the cooling box body, separation of the cooling box body and a primary circuit is realized, capacity expansion of a module is realized through external mounting of a direct current capacitor, serialization and fine simplification of an SVG power module are promoted, and the size of the SVG power module is reduced, the cost of the SVG is saved.

Description

But dilatation SVG water-cooling power module device

Technical Field

The utility model belongs to a compensation generator mounting structure, and particularly relates to a volume-expandable SVG water-cooling power module device.

Background

With the large-scale development of modern power grids, the wide application of nonlinear loads and impact loads of a large number of grid-connected and large-capacity power electronic devices and the like of new energy equipment brings about a serious problem of electric energy quality. For example:

the reactive impact causes the voltage fluctuation and flicker of the power grid, and the transmission device can not work normally when the voltage fluctuation and flicker are serious; the single-phase power supply equipment causes three-phase unbalance of a power grid and generates negative-sequence current; the capacitor bank resonates and amplifies harmonic current, so that the capacitor is overloaded or over-voltage or even burnt out; causing the transformer to heat, increasing the transformer loss; the insulation aging of the electrical equipment is accelerated.

At present, the mainstream solution at home and abroad adopts SVG (Static Var Generator Static Var compensator), and the main function of the SVG is as follows: the SVG can enhance the stability of a power grid system, inhibit voltage fluctuation and flicker, improve the unbalance of the system, improve the power factor, save energy and reduce consumption. Compared with other compensation devices, the compensation device has the advantages of high efficiency, quick response, occupied area saving, easiness in expansion, low cost and the like. The system can be used for energy saving and power quality control engineering of power transmission and distribution systems in the industries of electric power, metallurgy, electrified railways, nonferrous metals, petroleum, coal and the like, has wide application prospect, and can generate good economic and social benefits.

In the conventional power module of the low-voltage large-capacity SVG, 3 mounting plates are used as mounting components of the power module, and the mounting plates are used as the mounting components, so that a primary loop and a secondary loop are not separated, and the primary loop can generate electromagnetic interference on a control system; the utility model provides a SVG power unit, SVG power unit is integrated two H bridge circuit in a SVG power unit, forms the structure that the integrated level is high, and direct current capacitance all places the inside module width that leads to of module great, can't carry out the power module dilatation, has increaseed the whole machine size of SVG.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an expandable SVG water-cooling power module device to overcome the defects of the prior art.

The utility model provides a but dilatation SVG water-cooling power module device, including the power module mounting bracket, capacitor assembly, PMC integrated circuit board subassembly, IGBT assembly subassembly and external capacitor assembly, be the cavity structure in the middle of the power module mounting bracket, capacitor assembly is fixed in power module mounting bracket bottom, it is equipped with the cooling box to lie in the capacitor assembly upper end in the power module mounting bracket, IGBT assembly subassembly and PMC integrated circuit board subassembly all are fixed in the power module mounting bracket, IGBT assembly subassembly is located cooling box one side, PMC integrated circuit board subassembly is located one side of capacitor assembly, power module mounting bracket one end outside is equipped with the opening, the power module mounting bracket is equipped with opening one end and is connected with the expansion seat, capacitor assembly is fixed in on the expansion seat, external capacitor assembly is connected with the capacitor assembly electricity.

Furthermore, the bottom is equipped with the mount pad in the power module mounting bracket, is equipped with the installation fixed orifices on the mount pad, and the electric capacity subassembly passes through screw and installation fixed orifices fixed connection.

Further, the capacitor assembly comprises a plurality of capacitors, the plurality of capacitors are arrayed on the bottom in the power module mounting frame, and the plurality of capacitors are electrically connected with one another.

Further, the power module mounting bracket includes base, riser and apron, and on the riser interval was fixed in the base, the apron was fixed in the riser upper end that the interval set up.

Furthermore, the base, the vertical plate and the cover plate are connected by clamping, bolt connection or riveting.

Further, the other end tip of power module mounting bracket is equipped with the power opening, and the power opening part sets up and exchanges output row and exchange input row, exchanges output row and exchanges input row and connect in electric capacity subassembly, PMC integrated circuit board subassembly and IGBT assembly subassembly.

Further, the inner wall of the power module mounting frame is provided with a wall-hanging mounting seat, and the PMC board card assembly and the IGBT assembly are fixedly connected with the wall-hanging mounting seat through the laminated row and screws.

Further, the lamination row comprises a lamination negative row, lamination insulating paper and a lamination positive row which are sequentially stacked, and the lamination insulating paper is clamped between the lamination negative row and the lamination positive row.

Further, the stacked insulating paper is made of PET insulating paper.

Furthermore, the cooling box body comprises a cooling shell and a cooling pipe arranged in the cooling shell, and a cooling water inlet pipe and a cooling water outlet pipe which are connected with the cooling pipe are arranged at the end part of one end of the power module mounting frame.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model relates to a scalable SVG water-cooling power module device, wherein a cavity structure is arranged in the middle of a power module mounting frame, a capacitor assembly is fixed at the bottom in the power module mounting frame, a cooling box body is arranged at the upper end of the capacitor assembly in the power module mounting frame, an IGBT assembly component and a PMC board component are both fixed in the power module mounting frame, the IGBT assembly component is arranged at one side of the cooling box body, the PMC board component is arranged at one side of the capacitor assembly, an opening is arranged at the outer side of one end of the power module mounting frame, the end of the power module mounting frame, which is provided with the opening, is connected with an expansion seat, an external capacitor assembly is fixed on the expansion seat, the power module mounting frame is used as an integral mounting frame, the capacitor assembly, the PMC board component and the IGBT assembly component are arranged in the power module mounting frame, electric primary and secondary isolation is realized through the optimization of the internal structure of a power module, and cooling liquid is arranged in the cooling box body, the IGBT assembly component is arranged on one side of the cooling box body, the cooling box body and the primary circuit are separated, the capacity expansion of the module is realized by the external installation of the direct current capacitor, the serialization and the refinement of the SVG power module are promoted, the size of the SVG power module is reduced, and the cost of the SVG is saved.

Furthermore, the base, the vertical plate and the cover plate are connected through clamping, bolt connection or riveting, the use of standard parts is reduced, only the combined screws are needed for fastening, and the assembly efficiency of a single power module is improved.

Furthermore, the cooling box body comprises a cooling shell and a cooling pipe arranged in the cooling shell, and the cooling shell and the cooling pipe are arranged in a double-layer mode, so that the cooling safety is ensured.

Drawings

Fig. 1 is a front isometric view of a water-cooled power module apparatus according to an embodiment of the present invention.

Fig. 2 is a rear isometric view of a water-cooled power module apparatus in an embodiment of the utility model.

FIG. 3 is a schematic view of a cooling box installation structure according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a power module mounting bracket according to an embodiment of the utility model.

Fig. 5 is a schematic diagram of a stacked-layer structure according to an embodiment of the utility model.

In the figure, 1, a power module mounting frame; 2. a capacitive component; 3. a PMC board card component; 4. an IGBT assembly component; 5. an external capacitor assembly; 6. an AC output bank; 7. an AC input bank; 8. a cover plate; 10. arranging in a laminated manner; 11. laminating negative rows; 12. stacking insulating paper; 13. laminating and arranging; 14. cooling the box body; 15. an expansion seat; 16. mounting a fixing hole; 17. cooling the water inlet pipe; 18. cooling the water outlet pipe; 19. a wall-mounted mounting seat.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1 to 5, an expandable SVG water-cooling power module device comprises a power module mounting frame 1, a capacitor assembly 2, a PMC board assembly 3, an IGBT assembly 4 and an external capacitor assembly 5, wherein the middle of the power module mounting frame 1 is a cavity structure, the capacitor assembly 2 is fixed at the bottom of the power module mounting frame 1, a cooling box 14 is arranged at the upper end of the capacitor assembly 2 in the power module mounting frame 1, the IGBT assembly 4 and the PMC board assembly 3 are both fixed in the power module mounting frame 1, the IGBT assembly 4 is arranged at one side of the cooling box 14, the PMC board assembly 3 is arranged at one side of the capacitor assembly 2, an opening is arranged at the outer side of one end of the power module mounting frame 1, the end of the power module mounting frame 1 provided with the opening is connected with an expansion seat 15, the external capacitor assembly 5 is fixed on the expansion seat 15, and the external capacitor assembly 5 is electrically connected with the capacitor assembly 2, this application adopts power module mounting bracket 1 as the monolith installation frame, capacitance assembly 2, PMC integrated circuit board subassembly 3 and IGBT assembly subassembly 4 arrange and set up in power module mounting bracket 1, optimize through power module inner structure, realize electric once and twice isolation, set up the coolant liquid in the cooling box 14, IGBT assembly subassembly 4 sets up in cooling box 14 one side, realize the separation of cooling box 14 and primary circuit, module capacity dilatation is realized to direct current capacitance's external installation, promote SVG power module's serialization and smart simplification, reduce SVG power module size, the cost of SVG is saved.

Specifically, as shown in fig. 4, a mounting seat is arranged at the bottom in the power module mounting frame 1, a mounting fixing hole 16 is formed in the mounting seat, and the capacitor module 2 is fixedly connected with the mounting fixing hole 16 through a screw. The capacitor assembly 2 comprises a plurality of capacitors, the plurality of capacitors are arrayed at the bottom in the power module mounting frame 1, the plurality of capacitors are electrically connected with one another, and the electrically connected structure penetrates through the opening of the power module mounting frame 1 to realize the expansion of the module.

The IGBT mounting assembly 4 includes an IGBT mounting plate and an IGBT element, and the IGBT element is fixed to the IGBT mounting plate.

Specifically, the power module mounting frame 1 comprises a base, vertical plates and a cover plate 8, wherein the vertical plates are fixed on the base at intervals, and the cover plate 8 is fixed at the upper ends of the vertical plates arranged at intervals; the base, the vertical plate and the cover plate 8 are connected by clamping, bolt connection or riveting, the use of standard parts is reduced, only the combined screws are needed to fasten, and the assembly efficiency of a single power module is improved.

The cooling box body 14 comprises a cooling shell and a cooling pipe arranged in the cooling shell, the outer part of the cooling shell is close to or in contact with the IGBT assembly component 4, and a cooling water inlet pipe 17 and a cooling water outlet pipe 18 which are connected with the cooling pipe are arranged at one end part of the power module mounting frame 1; and the cooling shell and the cooling pipe are arranged in a double-layer mode, so that the cooling safety is ensured.

The other end tip of power module mounting bracket 1 is equipped with the power opening, and the power opening part sets up and exchanges output row 6 and exchange input row 7, exchanges output row 6 and exchanges input row 7 and connect in electric capacity subassembly 2, PMC integrated circuit board subassembly 3 and IGBT assembly subassembly 4 for provide input power.

The inner wall of the power module mounting frame 1 is provided with a wall-hanging mounting seat 19, and the PMC board card assembly 3 and the IGBT assembly 4 are fixedly connected with the wall-hanging mounting seat 19 through the laminated row 10 through screws, so that the external mounting of the direct-current capacitor is realized.

As shown in fig. 5, the lamination row includes a lamination negative row 11, a lamination insulating paper 12, and a lamination positive row 13, which are stacked in this order, and the lamination insulating paper 12 is interposed between the lamination negative row 11 and the lamination positive row 13, so that electrical insulation and isolation can be achieved.

The laminated row insulating paper 12 is made of 0.5mm PET insulating paper with excellent insulating property and stronger plasticity, and can form electrical insulation isolation between the laminated negative row 11 and the laminated positive row 13.

The cooling water route of cooling tube connects and optical fiber interface sets up in 1 one end terminal surface of power module mounting bracket, and exchange output row 6 and exchange output row 7 and set up in 1 other end terminal surface of power module mounting bracket, and cooling box 14 adopts the separation setting with IGBT assembly 4, avoids the water route to leak and leads to the accident.

The power module mounting rack 1 can be provided with a plurality of external capacitor assemblies 5 through the expansion seat 15, and is connected with the external capacitor assemblies 5 through screws, so that the direct current capacitor is externally hung, and the width of a single power module is reduced.

The capacity of the water-cooling power module can be increased by 1-3M by thickening the thicknesses of the alternating current output row 6, the alternating current input row 7, the laminated negative row 11 and the laminated positive row 13, adjusting the types of power devices in the IGBT assembly component 4 and combining an external direct current capacitance mode. The problem of SVG large capacity water-cooling power module size is big is solved, can realize the serialization of water-cooling power module, can realize the dilatation of 3M capacity to the utmost extent, have compact structure, equipment simple, overhaul convenient, the radiating effect is good, the reliability is high and the appearance is pleasing to the eye advantage, has saved the cost greatly.

Claims

1. A scalable SVG water-cooling power module device is characterized by comprising a power module mounting rack (1), a capacitor assembly (2), a PMC board card assembly (3), an IGBT assembly (4) and an externally-hung capacitor assembly (5), wherein the middle of the power module mounting rack (1) is of a cavity structure, the capacitor assembly (2) is fixed at the inner bottom of the power module mounting rack (1), a cooling box body (14) is arranged at the upper end of the capacitor assembly (2) in the power module mounting rack (1), the IGBT assembly (4) and the PMC board card assembly (3) are both fixed in the power module mounting rack (1), the IGBT assembly (4) is positioned at one side of the cooling box body (14), the PMC board card assembly (3) is positioned at one side of the capacitor assembly (2), an opening is arranged at the outer side of one end of the power module mounting rack (1), the end of the power module mounting rack (1) provided with the opening is connected with an expansion seat (15), the external capacitor component (5) is fixed on the expansion base (15), and the external capacitor component (5) is electrically connected with the capacitor component (2).

2. The expandable SVG water-cooling power module device according to claim 1, characterized in that, the bottom of the power module mounting rack (1) is provided with a mounting seat, the mounting seat is provided with a mounting fixing hole (16), and the capacitor component (2) is fixedly connected with the mounting fixing hole (16) through a screw.

3. An expandable SVG water-cooled power module device according to claim 1, characterized in that the capacitor assembly (2) comprises a plurality of capacitors arrayed at the bottom inside the power module mounting rack (1), the plurality of capacitors being electrically connected to each other.

4. The expandable SVG water-cooling power module device of claim 1, characterized in that power module mounting bracket (1) comprises a base, risers spaced apart fixed on the base, and a cover plate (8) fixed on the spaced apart risers upper ends.

5. The expandable SVG water-cooling power module device of claim 4, characterized in that the connection between the base, riser and cover plate (8) is by clamping, bolting or riveting.

6. The expandable SVG water-cooling power module device according to claim 1, characterized in that, the other end of the power module mounting rack (1) is provided with a power opening, an AC output row (6) and an AC input row (7) are arranged at the power opening, the AC output row (6) and the AC input row (7) are connected to the capacitor assembly (2), the PMC board assembly (3) and the IGBT assembly (4).

7. The expandable SVG water-cooling power module device according to claim 1, characterized in that, the inner wall of the power module mounting rack (1) is provided with a wall-hanging mounting seat (19), and the PMC board card component (3) and the IGBT assembly component (4) are fixedly connected with the wall-hanging mounting seat (19) through a laminated row by screws.

8. The scalable SVG water-cooled power module device according to claim 7, characterized in that the lamination row comprises a lamination negative row (11), a lamination row insulation paper (12) and a lamination positive row (13) which are stacked in sequence, the lamination row insulation paper (12) is sandwiched between the lamination negative row (11) and the lamination positive row (13).

9. The expandable SVG water-cooled power module device according to claim 8, characterized in that the stacked insulating paper (12) is PET insulating paper.

10. An expandable SVG water-cooled power module device according to claim 1, characterized in that the cooling box (14) comprises a cooling housing and a cooling pipe disposed inside the cooling housing, a cooling inlet pipe (17) and a cooling outlet pipe (18) connected to the cooling pipe being disposed at one end of the power module mounting bracket (1).