CN216564903U

CN216564903U - Compact power module and distribution network converter

Info

Publication number: CN216564903U
Application number: CN202122931780.XU
Authority: CN
Inventors: 焦洋洋; 贾艳玲; 张宾; 李飞; 姚艳芳; 窦琼珠; 王凯; 陈本乾; 李申
Original assignee: Xuji Group Co Ltd; XJ Electric Co Ltd
Current assignee: Xuji Group Co Ltd; XJ Electric Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-17
Anticipated expiration: 2031-11-26

Abstract

A compact power module and a distribution network converter. The compact power module includes: the device comprises a shell, a radiator, an IGBT drive board, a control board card and a laminated busbar; the shell is made of a fully insulating material; the radiator, the IGBT drive board, the control board card and the laminated busbar are arranged inside the shell; the heat sink is assembled to the frame of the power module; the IGBT is installed on the surface of the radiator; the IGBT driving board is arranged on the IGBT; the laminated busbar is arranged on the IGBT; the control board card is fixed on the insulating plate through the insulating column. The distribution network converter comprises at least one compact power module. The power module provided by the utility model has the advantages of compact structure, reasonable layout, convenience for installation and maintenance and easiness for expansion, and the power module group contained in the converter can be composed of a plurality of high-voltage modules and low-voltage modules, so that the module group containing different numbers of high-voltage modules and low-voltage modules can be matched according to the actual engineering requirements, and the applicability of the power module of the converter is improved.

Description

Compact power module and distribution network converter

Technical Field

The utility model relates to the technical field of inspection robots, in particular to a compact power module and a distribution network converter.

Background

In recent years, as the high-voltage direct-current transmission technology is widely applied to power systems, the application of a direct-current distribution network based on a power electronic converter is more and more extensive. The power module is used as a core component of the power electronic converter, and the power module directly influences the performance, reliability and maintainability of the converter. In the power module, the layout of the power devices not only affects various performance indexes of the converter, but also directly affects the heat dissipation and maintainability of the converter due to the unreasonable layout of the power devices, and causes the problems of unreasonable overall size design of the converter, overhigh cost and the like.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and needs of the prior art, the present invention provides a compact power module and a distribution network converter, which are compact in structure, reasonable in layout, convenient to install and maintain, and easy to expand.

A first aspect of the utility model provides a compact power module comprising: the device comprises a shell, a radiator, an IGBT drive board, a control board card and a laminated busbar;

the shell is made of a fully insulating material;

the radiator, the IGBT drive board, the control board card and the laminated busbar are arranged inside the shell;

the heat sink is assembled to a frame of the power module; the IGBT is installed on the surface of the radiator; the IGBT driving board is arranged on the IGBT; the laminated busbar is arranged on the IGBT; the control board card is fixed on the insulating plate through the insulating column.

Furthermore, the power module also comprises a bypass switch and a control unit thereof, and the bypass switch and the control unit thereof are arranged at the bottom of the frame of the power module.

Further, still include current sensor, set up in the position of being qualified for the next round of competitions.

Furthermore, the device also comprises a harmonic capacitor parallel circuit which is fixed by a copper bar and arranged at the position of the outgoing line.

Furthermore, the control board card comprises a metal shielding cover, and the shielding cover is made of permalloy with copper plated on the surface.

Further, still include the fan, with the radiator cooperation is used.

Further, the power module is a high-voltage power module or a low-voltage power module.

Further, the housing includes side panels, a top cover, a front panel, and a rear panel.

A second aspect of the utility model provides a distribution network converter comprising at least one high voltage power module and at least one low voltage power module; the high-voltage power module or the low-voltage power module is the power module.

Further, the power supply comprises a high-voltage power module, a low-voltage power module and a high-frequency isolation transformer;

the high-voltage power module and the low-voltage power module are arranged back to back, and the high-frequency isolation transformer is arranged between the high-voltage power module and the low-voltage power module.

In summary, the utility model provides a compact power module and a distribution network converter. The compact power module includes: the device comprises a shell, a radiator, an IGBT drive board, a control board card and a laminated busbar; the shell is made of a fully insulating material; the radiator, the IGBT drive board, the control board card and the laminated busbar are arranged inside the shell; the heat sink is assembled to the frame of the power module; the IGBT is installed on the surface of the radiator; the IGBT driving board is arranged on the IGBT; the laminated busbar is arranged on the IGBT; the control board card is fixed on the insulating plate through the insulating column. The distribution network converter comprises at least one compact power module. The power module provided by the utility model has the advantages of compact structure, reasonable layout, convenience for installation and maintenance and easiness for expansion, and the power module group contained in the converter can be composed of a plurality of high-voltage modules and low-voltage modules, so that the module group containing different numbers of high-voltage modules and low-voltage modules can be matched according to the actual engineering requirements, and the applicability of the power module of the converter is improved.

Drawings

Fig. 1 is a schematic structural diagram of a compact high-voltage power module provided by an embodiment of the utility model;

fig. 2 is a schematic view of an external insulating frame of a compact high-voltage power module provided by an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a compact low-voltage power module provided by an embodiment of the utility model;

fig. 4 is a schematic view of an external insulating frame of a compact low-voltage power module provided by an embodiment of the utility model;

fig. 5 is a schematic structural diagram of a distribution network converter provided in the embodiment of the present invention;

fig. 6 is a schematic view of a distribution network converter air duct heat dissipation structure provided by the embodiment of the utility model.

Reference numerals: 1. a heat sink; 2. an IGBT; 3. an IGBT drive board; 4. an absorption capacitance; 5. a resistance; 6. controlling a board card; 7. a bypass switch; 8. a capacitor; 9. laminating the busbars; 10. a current transformer; 11. a side panel; 12. a top cover; 13. a front panel; 14. a rear panel; 15. a high voltage power module; 16. a low voltage power module; 17. a high frequency isolation transformer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

A first aspect of the present invention provides a compact power module, as shown in fig. 1-4, comprising: the device comprises a shell, a radiator 1, an IGBT2, an IGBT drive board 3, a control board card 6 and a laminated busbar 9; the radiator 1, the IGBT2, the IGBT driving board 3, the control board card 6 and the laminated busbar 9 are arranged inside the shell; the heat sink 1 is assembled to the frame of the power module; the IGBT2 is installed on the surface of the radiator 1; the IGBT driving board 3 is installed on the IGBT 2; the laminated busbar 9 is arranged on the IGBT 2; the bottom of the laminated busbar is provided with a capacitor 8 side by side, and the capacitor 8 is fixed with a hole corresponding to the laminated busbar; the control board card 6 is fixed on the insulating plate through the insulating column; the current transformer 10 penetrates through a copper bar at the outlet position and is installed at the rear part of the frame; the absorption capacitor 4 is arranged on the laminated busbar; the resistor 5 is mounted on the heat sink. The power module integrates used electrical components in the box body, meets the electrical performance and adopts a sealing structure.

Furthermore, in the power module structure, the shell is made of an all-insulation material. The insulating material has the advantages of high strength, good formability, small specific gravity and the like. And the insulating shell is adopted, so that the distribution of the internal potential and the electric field of the module can be improved. The insulating shell is made of SMC insulating materials and is assembled and installed. The mounting holes are counter bores, and the bolts are not exposed after being mounted, so that the appearance is ensured.

Furthermore, in the power module structure, the through current adopts the laminated busbar, so that the power module has good electrical performance and can eliminate the impurity-generated inductance; the structure saves space, is simple and quick to assemble and is used for connecting electrical structural members.

Furthermore, the power module structure adopts an independent air duct structure for heat dissipation, and adopts a fan and radiator combined mode, so that the power module structure has high heat dissipation efficiency; the radiator is made of aluminum, so that the radiating area is large, and the heat conduction efficiency is high.

Further, the power module further comprises a bypass switch 7 and a control unit thereof, and the bypass switch and the control unit thereof are installed at the bottom of the frame of the power module.

Further, the device also comprises a current sensor 10 which is arranged at the position of the outgoing line.

Furthermore, the power module structure is reasonable in layout, sequentially comprises a radiator, an IGBT, a control board card and a capacitor from bottom to top, a bypass switch is arranged on the front portion of the power module structure, and a current sensor is arranged at the rear portion of the power module structure.

Furthermore, the harmonic capacitor parallel circuit is further included, is fixed by adopting a copper bar and is arranged at the wire outlet position, so that the electrical connection is realized, and the fixed installation is also realized.

Furthermore, the control board card 6 comprises a metal shielding cover, the shielding cover is made of permalloy plated with copper on the surface, the permalloy has high low-intensity magnetic field magnetic conductive aluminum, the copper has excellent diamagnetism, and the shielding cover made of the special material is used for realizing the electromagnetic interference design and ensuring the stable performance of the control board card.

Furthermore, the power module structure fully considers the assembly and the replacement and adopts a guide rail spot check type installation mode.

Further, still include the fan, with the radiator cooperation is used.

Further, the power module is a high voltage power module or a low voltage power module, wherein fig. 1 and 2 are high voltage power modules, and fig. 3 and 4 are low voltage power modules.

Further, the housing includes side panels 11, a top cover 12, a front panel 13, and a rear panel 14.

A second aspect of the utility model provides a distribution network converter, as shown in fig. 5 and 6, comprising at least one high voltage power module and at least one low voltage power module; the high-voltage power module or the low-voltage power module is the power module.

Fig. 6 is a schematic diagram of heat dissipation of the module set according to the present invention. An axial flow fan is designed at the top of the converter, an air channel is designed on the front panel, forced air is supplied, and the air passes through the internal radiator and the surfaces of the components and takes away heat from the air outlet of the rear panel to realize cooling of the components and the components. This kind of cooling method adopts the fan forced air blast for the air flows, and adjustable radiating fin height of radiator strengthens the radiating efficiency simultaneously.

According to the technical scheme provided by the utility model, on one hand, the power module group contained in the converter can be composed of a plurality of high-voltage modules and low-voltage modules, so that the module group containing different numbers of high-voltage modules and low-voltage modules can be matched according to actual engineering requirements, and the applicability of the power module of the converter is improved; on the other hand, because the converter power module with single-phase integrated design is adopted, the heat dissipation device can be integrated in the converter, so that the internal structure is further and reasonably utilized, the ergonomic design is met, and the aesthetic property and the practicability are better; meanwhile, the heat dissipation device can directly act on the power assembly without a ventilation air duct, so that the heat dissipation effect is improved, and the service life of the converter equipment is prolonged.

In summary, the utility model provides a compact power module and a distribution network converter. The compact power module includes: the device comprises a shell, a radiator, an IGBT drive board, a control board card and a laminated busbar; the shell is made of a fully insulating material; the radiator, the IGBT drive board, the control board card and the laminated busbar are arranged inside the shell; the heat sink is assembled to the frame of the power module; the IGBT is installed on the surface of the radiator; the IGBT driving board is arranged on the IGBT; the laminated busbar is arranged on the IGBT; the control board card is fixed on the insulating plate through the insulating column. The distribution network converter comprises at least one compact power module. The power module provided by the utility model has the advantages of compact structure, reasonable layout, convenience for installation and maintenance and easiness for expansion, and the power module group contained in the converter can be composed of a plurality of high-voltage modules and low-voltage modules, so that the module group containing different combinations of high-voltage modules and low-voltage modules can be matched according to the actual engineering requirements, and the applicability of the power module of the converter is improved.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A compact power module, comprising: the device comprises a shell, a radiator, an IGBT drive board, a control board card and a laminated busbar;

the shell is made of a full-insulation material;

2. The compact power module as claimed in claim 1, further comprising a bypass switch and its control unit mounted at the bottom of the frame of the power module.

3. The compact power module as recited in claim 1, further comprising a current sensor disposed at an outlet line location.

4. The compact power module as claimed in claim 1, further comprising a harmonic capacitor parallel circuit fixed in copper bars and disposed at the outlet position.

5. The compact power module as defined in claim 1 wherein said control board card includes a metal shield made of permalloy with a copper surface.

6. The compact power module as recited in any of claims 1-5, further comprising a fan for use with said heat sink.

7. The compact power module as claimed in any one of claims 1-5, wherein the power module is a high voltage power module or a low voltage power module.

8. The compact power module as claimed in any one of claims 1-5, wherein said housing comprises side panels, a top cover, a front panel and a rear panel.

9. A distribution network converter is characterized by comprising at least one high-voltage power module and at least one low-voltage power module; the high or low voltage power module is a power module according to any one of claims 1-8.

10. The distribution network converter of claim 9, comprising a high voltage power module, a low voltage power module, and a high frequency isolation transformer;