CN215580392U

CN215580392U - Series power module and SVG equipment

Info

Publication number: CN215580392U
Application number: CN202121255578.3U
Authority: CN
Inventors: 张进; 彭国平; 史奔; 段博; 苟鹏飞; 李德胜; 缑哲; 龙洁; 刘亚斌
Original assignee: Guangdong Anpu Electric Power Technology Co ltd
Current assignee: Guangdong Anpu Electric Power Technology Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-01-18
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a series power module and SVG equipment, wherein a frame body of the series power module is internally provided with a cavity, a water cooling plate, a first I GBT assembly, a second I GBT assembly, a first capacitor assembly and a second capacitor assembly are all arranged in the cavity, connecting assemblies arranged on the frame body are respectively connected with alternating current connecting ends of the first I GBT assembly and the second I GBT assembly so as to connect the first I GBT assembly and the second I GBT assembly in series, the I GBT assemblies are respectively arranged on two sides of the same water cooling plate in the cavity, and the I GBT assemblies are connected in series in the frame body through the connecting assemblies so as to realize the integration of the power assemblies, so that the integrated series power module can conveniently realize the cascade connection of the whole series power module only by arranging an alternating current incoming line copper bar and an alternating current outgoing line copper bar outside the frame body, thereby greatly saving the cost while improving the power density and reducing the module volume, the whole module is more convenient to mount, simple in structure and easy to maintain.

Description

Series power module and SVG equipment

Technical Field

The utility model relates to the field of reactive power compensation devices, in particular to a series power module and SVG equipment.

Background

In recent years, Static Var Generators (SVG) have been gradually applied to the fields of wind power, photovoltaic, industrial and mining enterprises, and the SVG has multiple functions of reactive power compensation, harmonic suppression, imbalance compensation and the like, has good dynamic performance, and has multiple control modes for users to select according to the needs in practical application, so that the SVG is widely accepted by the market.

Every looks of present SVG equipment all cascades by a plurality of power module and constitutes, and the size of single power module will directly influence the size of whole SVG equipment, and for reducing power module's size, prior art can dispel the heat in order to reduce the volume with a water-cooling base plate of two sets of power device sharing, but two sets of power device behind the sharing water-cooling base plate still need arrange interchange inlet wire copper bar and interchange outlet wire copper bar to it respectively, lead to power module's cascade installation more complicated and with high costs.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a series power module, which realizes the integration of the modules by connecting power components in series in the modules through connecting components, and reduces the installation difficulty and the module cost.

The utility model also provides the SVG device, which adopts the series power modules to reduce the size of the device and reduce the cost of the device.

According to a first aspect embodiment of the utility model, a series power module comprises: the frame body is provided with a containing cavity; the water cooling plate is arranged in the containing cavity of the frame body; the power assembly is arranged in the containing cavity of the frame body and comprises a first IGBT assembly and a second IGBT assembly, and the first IGBT assembly and the second IGBT assembly are respectively arranged on two sides of the water cooling plate; the first capacitor assembly is connected with the direct current connecting end of the second IGBT assembly, and the second capacitor assembly is connected with the direct current connecting end of the first IGBT assembly; and the connecting assembly is arranged on the frame body and is respectively connected with the alternating current connecting ends of the first IGBT assembly and the second IGBT assembly so as to connect the first IGBT assembly and the second IGBT assembly in series.

The series power module according to the embodiment of the utility model has at least the following beneficial effects:

be provided with in series connection power module's the framework and hold the chamber, arrange the both sides at same water-cooling board respectively with the IGBT subassembly in holding the chamber, and establish ties the IGBT subassembly in the framework through coupling assembling in order to realize power component's integration, thereby make series connection power module after the integration only need set up an exchange inlet wire copper bar and an exchange outlet wire copper bar outside the framework and can conveniently realize cascading whole series connection power module, the cost has greatly been saved when improving power density and reducing the module volume, whole module installation is more convenient, simple structure and easy to maintain.

According to some embodiments of the utility model, the first capacitive assembly is disposed above the water-cooled plate and the second capacitive assembly is disposed below the water-cooled plate.

According to some embodiments of the utility model, the IGBT component further comprises a first mounting plate and a second mounting plate, the first mounting plate is vertically arranged on the top of the frame body, the second mounting plate is vertically arranged on the bottom of the frame body away from the first mounting plate, the first capacitor component and the second capacitor component each comprise a plurality of capacitors arranged side by side, each of the plurality of capacitors is in an elongated shape, one end of each capacitor is provided with an electric connection end, the other end of each capacitor is provided with a mounting end, the capacitors in the first capacitor component and the capacitors in the second capacitor component are arranged in a mutually reverse direction, the mounting ends of the plurality of capacitors of the first capacitor component are connected with the first mounting plate, the electric connection ends of the plurality of capacitors of the first capacitor component are connected with the direct current connection end of the second IGBT component, and the mounting ends of the plurality of capacitors of the second capacitor component are connected with the second mounting plate, the electric connection ends of the capacitors of the second capacitor assembly are connected with the direct current connection end of the first IGBT assembly.

According to some embodiments of the utility model, the water cooling plate further comprises a control component arranged in the frame body cavity, the control component is connected with the power component, the control component is located at one end of the frame body, and the water cooling plate and the power component are located at one end of the frame body, which is away from the control component.

According to some embodiments of the utility model, the control assembly comprises a first control board connected to the control terminal of the first IGBT assembly and a second control board connected to the control terminal of the second IGBT assembly.

According to some embodiments of the utility model, the connecting assembly comprises a first copper bar assembly, a second copper bar assembly and a third copper bar assembly, the first copper bar assembly is connected with the alternating current connecting end of the first IGBT assembly, the second copper bar assembly is connected with the alternating current connecting end of the second IGBT assembly, a fixing assembly is arranged between the control assembly and the water-cooling plate, and the third copper bar assembly penetrates through the fixing assembly and is respectively connected with the alternating current connecting ends of the first IGBT assembly and the second IGBT assembly so as to connect the first IGBT assembly and the second IGBT assembly in series.

According to some embodiments of the utility model, the first copper bar assembly and the second copper bar assembly penetrate through a wall surface of one end of the frame body and extend out of the frame body, and the first copper bar assembly and the second copper bar assembly located outside the frame body are not parallel.

According to some embodiments of the utility model, the connector assembly is disposed on a wall surface of the frame body, which is away from the first copper bar assembly and the second copper bar assembly.

According to some embodiments of the utility model, the interface assembly comprises an optical fiber interface and a dc test interface, the optical fiber interface is connected with the first control board and the second control board respectively, and the dc test interface is connected with the first capacitor assembly and the second capacitor assembly respectively.

An SVG device according to an embodiment of a second aspect of the present invention includes a series power module as disclosed in any of the above embodiments.

The SVG device according to the embodiment of the present invention has at least the following beneficial effects:

the SVG equipment has improved the power density of equipment and has reduced the volume of equipment effectively through adopting series connection power module to be favorable to reducing the area of equipment, and reduced power module's cost, and then reduced the holistic cost of equipment by a wide margin, it is more convenient to install and maintain simultaneously, makes SVG equipment can satisfy the application requirement in more fields.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a series power module according to an embodiment of the present invention;

FIG. 2 is a left side view of one embodiment of a series power module of the present invention;

FIG. 3 is a schematic side view of a series power module according to an embodiment of the present invention;

FIG. 4 is a right side view of one embodiment of a series power module of the present invention;

fig. 5 is a rear view of one embodiment of a series power module of the present invention.

Reference numerals:

frame 100, water-cooling board 200, first IGBT subassembly 310, second IGBT subassembly 320, first electric capacity subassembly 410, second electric capacity subassembly 420, first copper bar subassembly 510, second copper bar subassembly 520, third copper bar subassembly 530, first mounting panel 610, second mounting panel 620, first control panel 710, second control panel 720, fixed subassembly 800, interface module 900, optical fiber interface 910, direct current test interface 920.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the positional or orientational descriptions referred to, for example, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, a series power module according to an embodiment of the present invention includes a frame body 100, a water-cooled plate 200, a power component, a first capacitor component 410, a second capacitor component 420, and a connecting component, where the frame body 100 is provided with a cavity, the water-cooled plate 200, the power component, the first capacitor component 410, and the second capacitor component 420 are all disposed in the cavity of the frame body 100, the power component includes a first IGBT component 310 and a second IGBT component 320, the first IGBT component 310 and the second IGBT component 320 are respectively disposed on two sides of the water-cooled plate 200, the first capacitor component 410 is connected to a dc connection end of the second IGBT component 320, and the second capacitor component 420 is connected to a dc connection end of the first IGBT component 310; the connection members provided on the frame 100 are connected to the ac connection terminals of the first IGBT module 310 and the second IGBT module 320, respectively, to connect the first IGBT module 310 and the second IGBT module 320 in series.

The frame 100 may be made of aluminum-clad zinc plates or hot-dip galvanized plates, and taking the aluminum-clad zinc plates as an example, the frame 100 may be a closed square box structure formed by a plurality of aluminum-clad zinc plates, and the box structure is hollow to form a cavity. The water cooling plate 200 is arranged in the cavity of the frame 100, and because the power assembly can generate a large amount of heat during working, the water cooling plate 200 filled with glycol and pure water can cool the power assembly by water cooling, thereby being beneficial to improving the working stability and the service life of the power assembly. The first IGBT component 310 and the second IGBT component 320 of the power component are respectively disposed on two sides of the water-cooling plate 200, the power component may include a plurality of IGBT pipes, in some embodiments, the first IGBT component 310 and the second IGBT component 320 may each include four IGBT pipes, wherein the source and the drain of each two IGBT pipes are connected in series with each other to form one IGBT leg, the first IGBT component 310 and the second IGBT component 320 each include two IGBT legs, and the two IGBT legs of the first IGBT component 310 are connected in parallel with the second capacitor component 420, the two IGBT legs of the second IGBT component 320 are connected in parallel with the first capacitor component 410, the connection components are respectively connected with the ac connection terminal of one of the IGBT legs of the first IGBT component 310 and the ac connection terminal of one of the IGBT legs of the second IGBT component 320 to connect the first IGBT component 310 and the second IGBT component 320 in series, so that the first IGBT component 310 and the second IGBT component 320 are connected in series to form one series power module, only need set up an interchange inlet wire copper bar and an interchange outlet wire copper bar on series connection power module's framework 100 and all cascade the two sets of IGBT subassemblies that series connection power module is located water-cooling board 200 both sides to the SVG equipment in, can reduce the cascade number of times of power module so that follow-up whole erection joint operation of SVG equipment, can reduce again and exchange the cost of arranging the material in order to reduce the module of inlet wire copper bar.

In some embodiments of the present invention, as shown in fig. 1-4, the first capacitor assembly 410 is disposed above the water-cooled plate 200, and the second capacitor assembly 420 is disposed below the water-cooled plate 200, so that the internal structure of the series power module is more compact by arranging two sets of capacitor assemblies and two sets of IGBT assemblies around the water-cooled plate 200, which is beneficial to further reduce the volume of the series power module.

In some embodiments of the present invention, as shown in fig. 1 to 4, the IGBT further includes a first mounting plate 610 and a second mounting plate 620, the first mounting plate 610 is vertically disposed on the top of the frame 100, the second mounting plate 620 is vertically disposed on the bottom of the frame 100 facing away from the first mounting plate 610, each of the first capacitor assembly 410 and the second capacitor assembly 420 includes a plurality of capacitors disposed side by side, each of the plurality of capacitors is elongated, one end of each capacitor is electrically connected to one end of the capacitor, the other end of each capacitor is disposed with a mounting end, the capacitors in the first capacitor assembly 410 and the capacitors in the second capacitor assembly 420 are disposed in opposite directions, the mounting ends of the plurality of capacitors of the first capacitor assembly 410 are connected to the first mounting plate 610, the electrical connection ends of the plurality of capacitors of the first capacitor assembly 410 are connected to the dc connection end of the second IGBT assembly 320, the mounting ends of the plurality of capacitors of the second capacitor assembly 420 are connected to the second mounting plate 620, the electrical connection terminals of the plurality of capacitors of the second capacitor assembly 420 are connected to the dc connection terminal of the first IGBT assembly 310.

Wherein, the plurality of capacitors of the first capacitor module 410 can be electrically connected to the second IGBT module 320 through the laminated busbar, the plurality of capacitors of the second capacitor module 420 can be electrically connected to the first IGBT module 310 through the laminated busbar, the capacitors of the first capacitor module 410 and the capacitors of the second capacitor module 420 are oppositely mounted above and below the water-cooling plate 200 through the first mounting plate 610 and the second mounting plate 620, so that the capacitors in the first capacitor module 410 and the capacitors in the second capacitor module 420 form a structure symmetrical about the water-cooled plate 200, thereby enabling the water-cooling plate 200, the power components and the capacitors in the series power module to be more compact in structure with respect to each other, and the connecting distance between the capacitor and the power assembly is shortened so as to reduce the consumption of the laminated busbar required for connecting the capacitor and the power assembly, and the cost of the series power module is further reduced.

In some embodiments of the present invention, as shown in fig. 1 to 4, the present invention further includes a control component disposed in the cavity of the frame body 100, the control component is connected to the power component, the control component is located at one end of the frame body 100, and the water-cooling plate 200 and the power component are located at one end of the frame body 100 away from the control component. Because the operational environment of control assembly is low voltage direct current, and electric wire netting high voltage alternating current is connected with power component through coupling assembling, sets up control assembly and power component respectively at the both ends that framework 100 kept away from each other, is favorable to reducing the interference of electric wire netting high voltage alternating current to control assembly, improves the reliability.

In some embodiments of the present invention, as shown in fig. 1-4, the control assembly includes a first control board 710 and a second control board 720, the first control board 710 is connected to the control terminal of the first IGBT assembly 310, and the second control board 720 is connected to the control terminal of the second IGBT assembly 320.

The first control board 710 is connected to the control end of the first IGBT component 310 to control the on-off state of the first IGBT component 310, and the second control board 720 is connected to the control end of the second IGBT component 320 to control the on-off state of the second IGBT component 320, so as to connect the capacitor component to the power grid to achieve the reactive compensation effect.

In some embodiments of the present invention, as shown in fig. 1 to 4, the connecting assembly includes a first copper bar assembly 510, a second copper bar assembly 520, and a third copper bar assembly 530, the first copper bar assembly 510 is connected to the ac connection end of the first IGBT assembly 310, the second copper bar assembly 520 is connected to the ac connection end of the second IGBT assembly 320, a fixing assembly 800 is disposed between the control assembly and the water-cooling plate 200, and the third copper bar assembly 530 penetrates through the fixing assembly 800 and is connected to the ac connection ends of the first IGBT assembly 310 and the second IGBT assembly 320, respectively, so as to connect the first IGBT assembly 310 and the second IGBT assembly 320 in series.

Wherein, in some embodiments, the first IGBT component 310 and the second IGBT component 320 located at both sides of the water-cooling plate 200 each comprise two IGBT branches connected in parallel, each IGBT branch is formed by connecting the source and drain of two IGBT tubes in series and the connection point of the two IGBT tubes in each IGBT branch forms an ac connection end, the first copper bar component 510 is connected to the ac connection end of one of the IGBT branches of the first IGBT component 310, the second copper bar component 520 is connected to the ac connection end of one of the IGBT branches of the second IGBT component 320, the ac connection end of the other one of the IGBT branches of the first IGBT component 310 and the ac connection end of the other one of the IGBT branches of the second IGBT component 320 are connected in series by the third copper bar component 530, the third copper bar assembly 530 passes through the fixing assembly 800 disposed behind the water-cooling plate 200 to connect the first IGBT assembly 310 and the second IGBT assembly 320 located at both sides of the water-cooling plate 200 in series into a whole.

In some embodiments of the present invention, as shown in fig. 1 to 4, the first copper bar assembly 510 and the second copper bar assembly 520 penetrate through the wall surface of one end of the frame 100 and extend to the outside of the frame 100, and the first copper bar assembly 510 and the second copper bar assembly 520 outside the frame 100 are not parallel. Taking fig. 1 and fig. 3 as an example for illustration, the first copper bar assembly 510 may be vertically perpendicular to the outer wall surface of one end of the frame 100, the second copper bar assembly 520 may be horizontally perpendicular to the same outer wall surface of the frame 100, the first copper bar assembly 510 and the second copper bar assembly 520 are not parallel, one of the copper bar assemblies is used as an ac incoming copper bar of the series power module, the other copper bar assembly is used as an ac outgoing copper bar of the series power module, since the two copper bar assemblies are not parallel, incoming and outgoing lines can be conveniently distinguished, thereby effectively avoiding accidents caused by misconnection of the ac incoming and outgoing copper bars when the series power modules are cascaded.

In some embodiments of the present invention, as shown in fig. 5, the connector assembly 900 is further included, and the connector assembly 900 is disposed on an end wall surface of the frame body 100 facing away from the first copper bar assembly 510 and the second copper bar assembly 520.

In some embodiments of the present invention, as shown in fig. 5, the interface module 900 includes a fiber interface 910 and a dc test interface 920, the fiber interface 910 is connected to the first control board 710 and the second control board 720, respectively, and the dc test interface 920 is connected to the first capacitor module 410 and the second capacitor module 420, respectively.

Wherein, optical fiber interface 910 and direct current test interface 920 all set up on the one end wall face that deviates from first copper bar subassembly 510 and second copper bar subassembly 520 at framework 100, optical fiber interface 910 and the general transmission low voltage electricity of direct current test interface 920, first copper bar subassembly 510 and second copper bar subassembly 520 transmission high-voltage alternating current, copper bar subassembly and the interface module 900 of the transmission low voltage electricity that will transmit high voltage electricity set up respectively on the both ends wall face that framework 100 kept away from each other in order to realize the separation setting of high voltage electricity and low voltage electricity, be favorable to improving the interference killing feature of module. Specifically, the optical fiber interface 910 is connected to the first control board 710 and the second control board 720, the first control board 710 and the second control board 720 can control the operation of the power component according to a control instruction received by the optical fiber interface 910, and the dc test interface 920 is connected to the first capacitor component 410 and the second capacitor component 420, respectively, so as to facilitate visual and effective detection and evaluation of dc withstand voltage parameters of the first capacitor component 410 and the second capacitor component 420 by a service person.

According to the SVG equipment of the embodiment of the second aspect of the utility model, the series power module is adopted, so that the power density of the SVG equipment is effectively improved and the volume of the equipment is reduced, the occupied area of the SVG equipment is favorably reduced, the cost of the power module required by the cascade of the SVG equipment is reduced, the overall cost of the equipment is greatly reduced, the installation and maintenance are more convenient, the SVG equipment adopting the series power module can meet the application requirements of more fields, especially when an old passive filtering compensation device is transformed into the SVG, the limitation of the original field to the occupied area of the SVG equipment can be effectively eliminated, the consumption of pipelines, insulating materials and container steel can be reduced, and the cost of transforming the SVG is greatly reduced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A series power module is characterized in that, comprising:

The frame body (100) is provided with a cavity;

a water cooling plate (200), arranged in the cavity of the frame body (100);

A power assembly, disposed in the cavity of the frame body (100), the power assembly includes a first IGBT assembly (310) and a second IGBT assembly (320), the first IGBT assembly (310) and the The second IGBT components (320) are respectively arranged on both sides of the water cooling plate (200);

A first capacitor assembly (410) and a second capacitor assembly (420) arranged in the housing (100) of the frame body (100), the direct current between the first capacitor assembly (410) and the second IGBT assembly (320) the connection end is connected, and the second capacitor component (420) is connected to the DC connection end of the first IGBT component (310);

A connection assembly, disposed on the frame body (100), the connection assembly is respectively connected with the AC connection ends of the first IGBT assembly (310) and the second IGBT assembly (320) to connect the first IGBT assembly (310) is connected in series with the second IGBT assembly (320).

2. A series-connected power module according to claim 1, characterized in that: the first capacitor assembly (410) is arranged above the water cooling plate (200), and the second capacitor assembly (420) is arranged below the water cooling plate (200).

3. The series-connected power module according to claim 2, characterized in that: further comprising a first mounting plate (610) and a second mounting plate (620), wherein the first mounting plate (610) is erected to set the The top of the frame body (100), the second mounting plate (620) is erected on the bottom of the frame body (100) away from the first mounting plate (610), the first capacitor assembly (410) and the Each of the second capacitor components (420) includes a plurality of capacitors arranged side by side, the plurality of capacitors are all elongated, one end of the capacitor is provided with an electrical connection end, and the other end of the capacitor is provided with a mounting end , the capacitors in the first capacitor assembly (410) and the capacitors in the second capacitor assembly (420) are set opposite to each other, and a plurality of the capacitors in the first capacitor assembly (410) The mounting end of the IGBT is connected to the first mounting board (610), the electrical connection ends of the capacitors of the first capacitor assembly (410) are connected to the DC connection end of the second IGBT assembly (320), The mounting ends of the capacitors of the second capacitor component (420) are connected to the second mounting board (620), and the electrical connection ends of the capacitors of the second capacitor component (420) are connected to the second mounting plate (620). The DC connection end of the first IGBT assembly (310) is connected.

4. A series-connected power module according to claim 1, characterized in that it further comprises a control assembly arranged in the cavity of the frame body (100), the control assembly is connected with the power assembly, and the control assembly is connected to the power assembly. The control assembly is located at one end of the frame body (100), and the water cooling plate (200) and the power assembly are located at the end of the frame body (100) away from the control assembly.

5. A series-connected power module according to claim 4, characterized in that: the control assembly comprises a first control board (710) and a second control board (720), the first control board (710) and the The control terminal of the first IGBT assembly (310) is connected, and the second control board (720) is connected to the control terminal of the second IGBT assembly (320).

6 . The series-connected power module according to claim 5 , wherein the connection assembly comprises a first copper bar assembly ( 510 ), a second copper bar assembly ( 520 ) and a third copper bar assembly ( 530 ). 7 . , the first copper bar assembly (510) is connected to the AC connection end of the first IGBT assembly (310), and the second copper bar assembly (520) is connected to the AC connection of the second IGBT assembly (320) A fixing component (800) is arranged between the control component and the water cooling plate (200), and the third copper bar component (530) penetrates the fixing component (800) and is respectively connected with the first The AC connection terminals of the IGBT assembly (310) and the second IGBT assembly (320) are connected to connect the first IGBT assembly (310) and the second IGBT assembly (320) in series.

7. The series-connected power module according to claim 6, wherein the first copper bar assembly (510) and the second copper bar assembly (520) pass through one end of the frame body (100) The wall surface extends to the outside of the frame body (100), and the first copper bar assembly (510) and the second copper bar assembly (520) located outside the frame body (100) are not parallel.

8. The series-connected power module according to claim 7, further comprising an interface assembly (900), wherein the interface assembly (900) is disposed on the frame body (100) away from the first copper bar The assembly (510) and one end wall of the second copper bar assembly (520).

9. The serial power module according to claim 8, wherein the interface assembly (900) comprises an optical fiber interface (910) and a DC test interface (920), and the optical fiber interface (910) is respectively connected to the The first control board (710) is connected with the second control board (720), and the DC test interface (920) is connected with the first capacitor assembly (410) and the second capacitor assembly (420) respectively .

10. An SVG device, characterized in that it comprises a series-connected power module according to any one of claims 1 to 9.