CN219576649U - SVG series connection power module and SVG equipment - Google Patents

Abstract

The utility model discloses an SVG series power module and SVG equipment, which comprises a frame body, a first IGBT component, a second IGBT component and a control board, wherein the frame body is provided with a containing cavity, the first IGBT component and the second IGBT component are connected in series to form a double-H bridge circuit, a power supply unit, a control unit, a first driving unit and a second driving unit are integrated on a single control board, the power supply unit is respectively and electrically connected with the first driving unit and the second driving unit to be capable of driving and controlling the operation of the two groups of IGBT components, and the two driving units share one power supply unit and one control unit, so that the structure is simplified, the number and material cost of electronic devices used are reduced, the probability of faults is reduced, the reliability of the power module is improved, meanwhile, the driving control of the two groups of IGBT components is realized by only adopting the single control board, the number of the control boards arranged in the frame body is reduced, and the installation space inside the frame body is saved.

Description

SVG series connection power module and SVG equipment

Technical Field

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

Background

SVG (Static Var Generator ) devices are generally composed of a cascade of several SVG series-connected power modules, which are the core components of the complete machine device. In order to improve the power density, the power module is generally formed by connecting two groups of IGBT components in series to form a double H-bridge circuit, but the existing power module is often required to be correspondingly provided with two control circuit boards in a case, the working states of the two groups of IGBT components are respectively adjusted through the two control circuit boards, and each control circuit board is required to be provided with a corresponding power circuit, a corresponding control circuit and a corresponding driving circuit, so that a plurality of required electronic devices are caused, the cost of materials is high, the structure is complex, the electronic devices on any one control circuit board are abnormal and all cause faults, the reliability of the power module is low, in addition, the space in the case is limited, the two control circuit boards are arranged, the installation space is occupied, the size and the occupied area of equipment are large, and the cost is high.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the SVG series power module provided by the utility model realizes drive control on two groups of IGBT components only through a single control board, can reduce the number of electronic devices and improve the reliability, and is beneficial to saving the cost and the space.

The utility model also provides SVG equipment, which has high reliability and can reduce the volume and the cost.

An SVG series power module in accordance with an embodiment of the first aspect of the present utility model includes: the frame body is provided with a containing cavity; the first IGBT component and the second IGBT component are connected in series, are arranged on the frame body and are positioned in the accommodating cavity; the control panel is arranged on the frame body and is positioned in the accommodating cavity, only one control panel is arranged on the control panel, a power supply unit, a control unit, a first driving unit and a second driving unit are arranged on the control panel, the power supply unit is respectively electrically connected with the control unit, the first driving unit and the second driving unit to supply power, the first driving unit is electrically connected with the first IGBT component, the second driving unit is electrically connected with the second IGBT component, and the control unit is respectively electrically connected with the first driving unit and the second driving unit to control the operation of the first IGBT component and the second IGBT component.

The SVG series power module provided by the embodiment of the utility model has at least the following beneficial effects:

according to the SVG series power module, the first IGBT component and the second IGBT component are connected in series to form the double-H-bridge circuit, the power supply unit, the control unit, the first driving unit and the second driving unit are integrated on the single control board, the power supply unit is used for supplying power, the control unit is respectively electrically connected with the first driving unit and the second driving unit so as to be capable of driving and controlling the operation of the two groups of IGBT components, the two driving units share one power supply unit and one control unit, the structure is simplified, the number of electronic devices and the material cost are reduced, the probability of faults is reduced, the reliability of the power module is improved, meanwhile, the driving control of the two groups of IGBT components is realized by only adopting a single control board, the number of control boards arranged in the frame is reduced, and the installation space inside the frame is saved.

According to some embodiments of the utility model, the first IGBT assembly and the second IGBT assembly are disposed on the water cooled plate.

According to some embodiments of the utility model, the water-cooled plate includes an electrically conductive housing disposed on the frame and in the receiving cavity, the electrically conductive housing having a heat exchange channel with an insulating heat transfer medium therein, the first and second GBT assemblies each being disposed on the electrically conductive housing in an insulating manner, the conductive terminals of the first and second GBT assemblies each being electrically connected to the electrically conductive housing such that the first and second GBT assemblies are connected in series.

According to some embodiments of the utility model, the first GBT component and the second GBT component are disposed on two sides of the water-cooled plate, respectively.

According to some embodiments of the utility model, the first and second GBT assemblies are each disposed below the control board with a gap therebetween, and the control board is disposed on top of the frame, and the capacitor assembly is disposed on the bottom of the frame.

According to some embodiments of the utility model, the capacitor assembly includes a plurality of filter capacitors, the filter capacitors are all elongated, and the filter capacitors are arranged at the bottom of the frame in a side-by-side manner.

According to some embodiments of the utility model, the control panel is horizontally disposed on top of the frame.

According to some embodiments of the utility model, the capacitor assembly further comprises a stacked busbar assembly disposed on the capacitor assembly, the capacitor assembly being electrically connected to the first GBT assembly and the second GBT assembly via the stacked busbar assembly, respectively.

According to some embodiments of the utility model, the device further comprises an optical fiber interface, a water-cooled tube interface, a direct current test interface and an alternating current connection row, wherein the optical fiber interface, the water-cooled tube interface, the direct current test interface and the alternating current connection row are all arranged on the same end face of the frame body.

An SVG device according to an embodiment of the second aspect of the present utility model includes an SVG serial power module as disclosed in any of the above embodiments.

The SVG device provided by the embodiment of the utility model has at least the following beneficial effects:

according to the SVG equipment, the SVG serial power module is adopted, so that the number of control boards and used electronic devices is reduced, the material cost can be effectively saved, the reliability of the whole machine is improved, the installation space in the power module frame body is saved, the volume of the equipment and the occupied area of the equipment are reduced, and the cost of the equipment is reduced.

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 foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a perspective view of one embodiment of a SVG series power module of the present utility model;

FIG. 2 is a schematic diagram of an exploded view of one embodiment of a SVG series power module of the present utility model;

FIG. 3 is a right side view of one embodiment of a SVG series power module of the present utility model;

fig. 4 is a left side view of one embodiment of the SVG serial power module of the present utility model.

Reference numerals:

the device comprises a frame 100, a mounting plate 110, a first IGBT assembly 210, a second IGBT assembly 220, a control board 300, a power supply unit 310, a control unit 320, a first driving unit 330, a second driving unit 340, a water cooling plate 400, a first connection row 510, a second connection row 520, a capacitor assembly 600, a filter capacitor 610, a laminated busbar assembly 700, an optical fiber interface 810, a water cooling pipe interface 820, a direct current test interface 830 and an alternating current connection row 840.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed 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 utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 4, an SVG serial power module according to an embodiment of the present utility model includes a housing 100, a first IGBT assembly 210 and a second IGBT assembly 220, and a control board 300, the housing 100 is provided with a receiving cavity, the first IGBT assembly 210 and the second IGBT assembly 220 connected in series are disposed on the housing 100 and located in the receiving cavity, the control board 300 is disposed on the housing 100 and located in the receiving cavity, only one control board 300 is provided, the control board 300 is provided with a power supply unit 310, a control unit 320, a first driving unit 330 and a second driving unit 340, the power supply unit 310 is electrically connected with the control unit 320, the first driving unit 330 and the second driving unit 340, respectively, to supply power, the first driving unit 330 is electrically connected with the first IGBT assembly 210, the second driving unit 340 is electrically connected with the second IGBT assembly 220, and the control unit 320 is electrically connected with the first driving unit 330 and the second driving unit 340, respectively, to be able to control the operation of the first IGBT assembly 210 and the second IGBT assembly 220.

The power supply unit 310, the control unit 320, the first driving unit 330 and the second driving unit 340 may be selected from conventional components, specifically, the power supply unit 310 may be configured of a voltage regulation chip and an accessory circuit, for regulating voltages to different voltage levels to achieve power supply, the control unit 320 may be configured of a processing chip such as an MCU or a CPU, and an accessory circuit, for performing signal processing according to a control instruction and sending a driving signal to the first driving unit 330 or the second driving unit 340, and the first driving unit 330 and the second driving unit 340 may be configured of a driving chip and an accessory circuit, for receiving the driving signal, performing power amplification, and outputting the driving signal to the first IGBT component 210 and the second IGBT component 220 to control on and off of the IGBT elements, so as to achieve driving control of the first IGBT component 210 and the second IGBT component 220. 1-2, the first IGBT assembly 210 and the second IGBT assembly 220 are connected in series to form a double H-bridge circuit, a power supply unit 310, a control unit 320, a first driving unit 330 and a second driving unit 340 are integrated on a single control board 300, the power supply unit 310 is used for supplying power, the control unit 320 is respectively electrically connected with the first driving unit 330 and the second driving unit 340 so as to be capable of driving and controlling the operation of the two groups of IGBT assemblies, and by sharing one power supply unit 310 and one control unit 320 with the two driving units, the structure is simplified, the number of electronic devices and the material cost are reduced, the probability of faults is reduced, the reliability of the power module is improved, and meanwhile, the driving control of the two groups of IGBT assemblies is realized by only using the single control board 300, the number of the control boards 300 arranged in the frame 100 is reduced, and the installation space inside the frame 100 is saved.

In some embodiments of the present utility model, as shown in fig. 1-4, a water cooling plate 400 is further included that is disposed on the frame 100 and is located in the receiving cavity, and the first IGBT assembly 210 and the second IGBT assembly 220 are both disposed on the water cooling plate 400.

It can be appreciated that the water cooling plate 400 can be used to dissipate heat of the IGBT components, and referring to fig. 1 to 4, two groups of IGBT components share the same water cooling plate 400, which is beneficial to reducing the material cost of the water cooling plate 400.

In some embodiments of the present utility model, as shown in fig. 1-4, the water-cooled plate 400 includes an electrically conductive housing disposed on the frame 100 and located in the receiving cavity, the electrically conductive housing having a heat exchange channel with an insulating heat conducting medium therein, the first IGBT assembly 210 and the second IGBT assembly 220 each being disposed on the electrically conductive housing in an insulating manner, the electrically conductive terminals of the first IGBT assembly 210 and the electrically conductive terminals of the second IGBT assembly 220 each being electrically connected to the electrically conductive housing such that the first IGBT assembly 210 and the second IGBT assembly 220 are connected in series.

The conductive shell of the water cooling plate 400 may be made of aluminum alloy or copper alloy, which not only has conductivity but also has good heat conductivity, and the insulating and heat conducting medium may be deionized water, which is pure water from which impurities in ion form are removed, and the pure water has almost no freely movable positive and negative ions, so that the conductivity is extremely weak, and the insulating and heat conducting plate can be used for realizing insulating and heat exchanging. It should be appreciated that, since the first IGBT assembly 210 and the second IGBT assembly 220 are mounted on the conductive housing of the water cooling plate 400, a large amount of heat generated by the IGBT assemblies during operation can be conducted to the deionized water in the heat exchange channel through the conductive housing to exchange heat, and the flowing deionized water is utilized to carry away the heat, so that rapid water cooling and heat dissipation can be realized. Specifically, referring to fig. 1-4, the conductive terminals of the first IGBT assembly 210 are electrically connected with the conductive housing of the water-cooled plate 400 through the first connection row 510 and the conductive terminals of the second IGBT assembly 220 are electrically connected with the conductive housing of the water-cooled plate 400 through the second connection row 520, so that the first IGBT assembly 210 may be connected in series with the second IGBT assembly 220, wherein the first connection row 510 and the second connection row 520 may be a connection copper bar or a connection aluminum bar, and it is noted that the conductive housing of the water-cooled plate 400 conductively connects the two groups of IGBT assemblies together to form a double H-bridge circuit, which may reduce the length of the connection copper bar or the connection aluminum bar required for the series connection of the two groups of IGBT assemblies, thereby being beneficial to reduce the material cost.

In some embodiments of the present utility model, as shown in fig. 1-4, the first IGBT assembly 210 and the second IGBT assembly 220 are disposed on both sides of the water cooled plate 400, respectively.

Specifically, referring to fig. 1-4, two groups of IGBT components are respectively disposed on two sides of the water-cooling plate 400, so that the surface areas of the two sides of the water-cooling plate 400 can be fully utilized to dissipate heat of the two groups of IGBT components, which is beneficial to reducing the size of the water-cooling plate 400, and preventing the water-cooling plate 400 from occupying too much mounting space inside the frame 100 due to oversized size, thereby effectively reducing the size of the power module and improving the power density.

In some embodiments of the present utility model, as shown in fig. 1-4, a capacitor assembly 600 electrically connected to the first IGBT assembly 210 and the second IGBT assembly 220 is further included, the control board 300 is disposed on top of the frame 100, the capacitor assembly 600 is disposed on bottom of the frame 100, the first IGBT assembly 210 and the second IGBT assembly 220 are both disposed under the control board 300, and a gap is provided between the first IGBT assembly 210 and the second IGBT assembly 220 and the control board 300.

Specifically, referring to fig. 3 to 4, there is a gap between the control board 300 disposed at the top of the frame 100 and the two groups of IGBT components disposed at the middle of the frame 100 and the capacitor component 600 disposed at the bottom, so that a sufficient space is formed between the IGBT components and the capacitor component 600 and the control board 300 to achieve a high-low voltage separation arrangement, which is advantageous in improving the electromagnetic compatibility of the module and the reliability of the whole machine.

In some embodiments of the present utility model, as shown in fig. 1-4, the capacitor assembly 600 includes a plurality of filter capacitors 610, the filter capacitors 610 are elongated, and the filter capacitors 610 are disposed at the bottom of the frame 100 in a side-by-side manner.

1-4, the filter capacitors 610 are arranged at the bottom of the frame 100 in a side-by-side manner, which is beneficial to saving the installation space occupied by the capacitor assembly 600, so that the space at the bottom of the frame 100 is more abundant, and the maintenance operation of technicians is facilitated.

In some embodiments of the present utility model, as shown in fig. 1-4, the control board 300 is horizontally disposed on top of the frame 100.

Specifically, referring to fig. 3 to 4, the mounting plate 110 is disposed at the top of the frame 100, and the control board 300 is horizontally disposed at the top of the frame 100 by using the mounting plate 110, so that the space occupied by the control board 300 in the frame 100 can be reduced, which is beneficial to reducing the overall size of the module.

In some embodiments of the present utility model, as shown in fig. 1 and 3-4, a stacked busbar assembly 700 is further included on the capacitor assembly 600, and the capacitor assembly 600 is electrically connected to the first IGBT assembly 210 and the second IGBT assembly 220 through the stacked busbar assembly 700, respectively.

It should be noted that, because the laminated busbar design is concise and compact, the capacitor assembly 600 is electrically connected with the two groups of IGBT assemblies by adopting the laminated busbar assembly 700, which is beneficial to saving the internal space, and in addition, the laminated busbar assembly 700 can reduce the stray inductance and peak voltage in the circuit, thereby protecting the IGBT assemblies and being easier to dissipate heat and cool.

In some embodiments of the present utility model, as shown in fig. 1, the optical fiber connector 810, the water-cooled tube connector 820, the dc test connector 830 and the ac connection row 840 are all disposed on the same end surface of the frame body 100.

The ac connection row 840 may be a copper connection row or an aluminum connection row, and it should be understood that referring to fig. 1, the optical fiber interface 810, the water-cooled tube interface 820, the dc test interface 830, and the ac connection row 840 are all disposed on the front end surface of the frame body 100, so that a technician is convenient to overhaul and maintain the front of the power module, and the operation is more convenient.

An SVG device according to an embodiment of the second aspect of the present utility model includes an SVG serial power module as disclosed in any of the above embodiments.

It should be noted that, by adopting the above SVG serial power module, the SVG device reduces the number of control boards 300 and used electronic devices, can effectively save material cost and improve reliability of the whole machine, and saves installation space inside the power module frame 100, thereby reducing the volume of the device and the occupied area of the device, and being beneficial to reducing the cost of the device.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

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

Claims (10)

1. An SVG series power module comprising:

a frame (100) provided with a receiving chamber;

a first IGBT assembly (210) and a second IGBT assembly (220) which are connected in series, are arranged on the frame body (100) and are positioned in the accommodating cavity;

the control panel (300) is arranged on the frame body (100) and is located in the accommodating cavity, the control panel (300) is only one, a power supply unit (310), a control unit (320), a first driving unit (330) and a second driving unit (340) are arranged on the control panel (300), the power supply unit (310) is respectively electrically connected with the control unit (320), the first driving unit (330) and the second driving unit (340) to supply power, the first driving unit (330) is electrically connected with the first IGBT component (210), the second driving unit (340) is electrically connected with the second IGBT component (220), and the control unit (320) is respectively electrically connected with the first driving unit (330) and the second driving unit (340) to control the operation of the first IGBT component (210) and the second IGBT component (220).

2. The SVG series power module of claim 1, wherein: the IGBT device further comprises a water cooling plate (400) arranged on the frame body (100) and located in the accommodating cavity, and the first IGBT component (210) and the second IGBT component (220) are both arranged on the water cooling plate (400).

3. The SVG series power module of claim 2, wherein: the water cooling plate (400) comprises a conductive shell arranged on the frame body (100) and located in the accommodating cavity, the conductive shell is provided with a heat exchange channel, an insulating heat conduction medium is arranged in the heat exchange channel, the first IGBT component (210) and the second IGBT component (220) are all arranged on the conductive shell in an insulating mode, and the conductive terminals of the first IGBT component (210) and the conductive terminals of the second IGBT component (220) are all electrically connected with the conductive shell so that the first IGBT component (210) and the second IGBT component (220) are connected in series.

4. The SVG series power module of claim 2, wherein: the first IGBT component (210) and the second IGBT component (220) are respectively arranged on two sides of the water cooling plate (400).

5. The SVG series power module of claim 1, wherein: still include with first IGBT subassembly (210) with capacitor assembly (600) that second IGBT subassembly (220) electricity is connected, control panel (300) set up the top of framework (100), capacitor assembly (600) set up the bottom of framework (100), first IGBT subassembly (210) with second IGBT subassembly (220) all set up in the below of control panel (300) and first IGBT subassembly (210) with have the clearance between second IGBT subassembly (220) and control panel (300).

6. The SVG series power module of claim 5, wherein: the capacitor assembly (600) comprises a plurality of filter capacitors (610), wherein the filter capacitors (610) are all in long strips, and the filter capacitors (610) are vertically arranged at the bottom of the frame body (100) side by side.

7. The SVG series power module of claim 5, wherein: the control board (300) is horizontally arranged at the top of the frame body (100).

8. The SVG series power module of claim 5, wherein: the capacitor assembly (600) is electrically connected with the first IGBT assembly (210) and the second IGBT assembly (220) through the laminated busbar assembly (700).

9. The SVG series power module of claim 1, wherein: the novel water cooling device further comprises an optical fiber interface (810), a water cooling pipe interface (820), a direct current test interface (830) and an alternating current connection row (840), wherein the optical fiber interface (810), the water cooling pipe interface (820), the direct current test interface (830) and the alternating current connection row (840) are all arranged on the same end face of the frame body (100).

10. An SVG device, characterized by: comprising the SVG serial power module of any one of claims 1 to 9.