CN218920245U - Novel electrolytic capacitor type power unit module - Google Patents
Novel electrolytic capacitor type power unit module Download PDFInfo
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- CN218920245U CN218920245U CN202223048407.0U CN202223048407U CN218920245U CN 218920245 U CN218920245 U CN 218920245U CN 202223048407 U CN202223048407 U CN 202223048407U CN 218920245 U CN218920245 U CN 218920245U
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- rectifier bridge
- direct current
- main shell
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Abstract
The utility model relates to a novel electrolytic capacitor type power unit module, wherein a direct current capacitor is arranged below a unit main shell and is connected with an IGBT (insulated gate bipolar transistor) and a three-phase rectifier bridge through a direct current bus bar, so that the distance between the positive bus bar and the negative bus bar of the direct current bus bar is shortest; insulating plates are used for isolation between the positive and negative of the IGBT connection rows, so that the insulating requirement between the positive and negative rows is met, and the stray inductance of the busbar is reduced; an insulating plate is arranged at the end of the rectifier bridge connecting row and the end of the incoming cable, so that the electric gap requirement between the input cable and the connecting row is ensured; the output copper bar is fixed with the main shell of the unit through an insulator, so that the output copper bar is ensured not to deform when being stressed. The utility model reduces the installation procedure on the basis of meeting the electric performance of the power unit, and has the characteristics of small volume, low cost, high assembly and maintenance efficiency and the like.
Description
Technical Field
The utility model relates to a power unit module in a high-voltage frequency converter in the field of power electronics, in particular to a novel electrolytic capacitor type power unit module.
Background
With the rapid development of modern power electronics technology, the development of power semiconductor technology is promoted. The power unit module of the traditional high-voltage frequency converter is large in structural size and poor in stability, the main loop of the power unit module is formed by a rectifying module, IGBT, direct-current capacitors and the like, the rectifying module is connected with the direct-current capacitors through cables, wiring is irregular, manufacturability is poor, if the direct-current capacitors are connected with the IGBT through a laminated busbar structure, cost is high, universality is poor, special manufacturer customization is needed, if the direct-current capacitors are connected through copper bars, the capacitors are large in number, the parallel connection and serial connection are designed in a connecting mode, the installation is complex, stray inductance of the busbar loop is large, and the running reliability of equipment is reduced.
Disclosure of Invention
In order to solve the problems, the utility model provides a novel electrolytic capacitor type power unit module, which has the technical scheme that:
the device comprises a box body, wherein the box body consists of a unit main shell, an L-shaped side plate and a straight side plate, and a radiator, a three-phase rectifier bridge, an IGBT (insulated gate bipolar transistor), an insulating plate, a rectifier bridge connecting row, an IGBT connecting row, a direct current bus row, a cement resistor, a direct current capacitor, a bypass contactor, a transformer and a control driving plate are arranged in the box body;
an output copper bar, a three-phase rectifier bridge, an IGBT, a rectifier bridge connecting bar and an IGBT connecting bar are arranged on one side of the radiator; the three-phase rectifier bridge and the IGBT are respectively fixed on the radiator, the three-phase rectifier bridge is connected with the direct current capacitor through a rectifier bridge connecting row, and the IGBT is connected with the direct current capacitor through an IGBT connecting row;
one end of the output copper bar is connected with the IGBT, and the other end extends out of the box body and is fixed with the main shell through an insulator; insulating plates II are used for isolating between the positive and negative of the IGBT connection row; an insulating board I is arranged at the end of the rectifying bridge connecting row and the input cable;
the direct-current capacitor is arranged below the inside of the main shell, is connected with the IGBT and the three-phase rectifier bridge through the direct-current bus bar, and is provided with the cement resistor above;
the transformer is arranged at the front lower part of the main shell and is arranged at the front end of the direct-current capacitor;
the bypass contactor is fixed at the rear side in the main shell and is positioned between the radiator and the control driving plate;
the control driving plate is fixed on the left upper side of the main shell and the right upper part of the direct current capacitor.
Further, one side of the main shell is an L-shaped side plate, the other side of the main shell is a straight side plate, and the main shell is fixed with the main shell by using a matching bolt.
Further, the handle and the quick fuse are further arranged on the outer side of the main shell, the handle is fixed on the outer front face of the main shell, and the quick fuse is fixed on the front face of the main shell through the insulator.
The beneficial effects of the utility model are as follows: the utility model relates to a novel electrolytic capacitor type power unit module, wherein a direct current capacitor is arranged below a unit main shell and is connected with an IGBT (insulated gate bipolar transistor) and a three-phase rectifier bridge through a direct current bus bar, so that the distance between the positive bus bar and the negative bus bar of the direct current bus bar is shortest; insulating plates are used for isolation between the positive and negative of the IGBT connection rows, so that the insulating requirement between the positive and negative rows is met, and the stray inductance of the busbar is reduced; an insulating plate is arranged at the end of the rectifier bridge connecting row and the end of the incoming cable, so that the electric gap requirement between the input cable and the connecting row is ensured; the output copper bar is fixed with the main shell of the unit through an insulator, so that the output copper bar is ensured not to deform when being stressed. The utility model reduces the installation procedure on the basis of meeting the electric performance of the power unit, and has the characteristics of small volume, low cost, high assembly and maintenance efficiency and the like.
Drawings
FIG. 1 is a schematic view of the present utility model;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic diagram of a DC bus bar;
FIG. 4 is a schematic diagram of a DC capacitor connected to a heat sink;
as shown in the figure, the main housing 1, the radiator 2, the three-phase rectifier bridge 3.1, the igbts 3.2, the insulating board 4 (i.e. the insulating board I4.1, the insulating board II 4.2), the rectifier bridge connection row 5.1, the igbt connection row 5.2, the direct current bus bar 6, the cement resistor 7, the direct current capacitor 8, the bypass contactor 9, the transformer 10, the control driving board 11, the insulator 12, the flash fuse 13, the input cable 14, the handle 15, the output copper bar 16, the 17L-shaped side boards, the 18 direct current side boards.
Detailed Description
As shown in the figure, the novel electrolytic capacitor type power unit module comprises a box body, wherein the box body consists of a main shell 1, an L-shaped side plate 17 and a straight side plate 18, a radiator 2, a three-phase rectifier bridge 3.1, an IGBT3.2, an insulating plate I4.1, an insulating plate II4.2, a rectifier bridge connecting row 5.1, an IGBT connecting row 5.2, a direct current bus row 6, a cement resistor 7, a direct current capacitor 8, a bypass contactor 9, a transformer 10 and a control driving plate 11 are arranged in the box body, and an insulator 12, a fast fuse 13, an input cable 14, a handle 15 and an output copper bar 16 are arranged at the front side of the box body.
The heat dissipation window of the heat radiator faces outwards and is positioned on the front side of the main shell and faces to the handle and the quick melting side. An output copper bar, a three-phase rectifier bridge, an IGBT, a rectifier bridge connecting bar and an IGBT connecting bar are arranged on one side of the radiator; the three-phase rectifier bridge and the IGBT are respectively fixed on the radiator, the three-phase rectifier bridge is connected with the direct current capacitor through the rectifier bridge connecting row, the IGBT is connected with the direct current capacitor through the IGBT connecting row, the effect is that the input realizes three-phase rectification, namely three-phase alternating current is changed into direct current, meanwhile, the three-phase input alternating current is protected through fast melting, the capacitor is used as energy storage and filtering to provide support for inversion, and the IGBT device realizes direct current inversion through PWM control output.
One end of the output copper bar is connected with the IGBT, and the other end extends out of the box body and is fixed with the main shell through an insulator; insulating plates II are used for isolating between the positive and negative of the IGBT connection row; an insulating board I is arranged at the end of the rectifying bridge connecting row and the input cable; the bottom of the direct-current capacitor is fixedly arranged below the inside of the main shell through bolts, is connected with the IGBT and the three-phase rectifier bridge through a direct-current bus bar, and is provided with a cement resistor above the direct-current capacitor; the direct-current capacitor optimizes the connection mode of the direct-current bus bar 6, and ensures that the distance between the positive bus bar and the negative bus bar is shortest; the transformer is arranged at the front lower part of the main shell of the unit and is arranged at the front end of the direct-current capacitor. The bypass contactor is fixed on the rear side of the unit main shell and is positioned between the radiator and the control driving plate; insulating board II4.2 is used for isolating between the positive and negative of the IGBT connecting row 5.2, so that the insulating requirement between the positive and negative rows is met, and the busbar stray inductance is reduced. And an insulating plate I4.1 is arranged at the end of the rectifying bridge connecting row 5.1 and the end of the input cable 14, so that the electric gap requirement is ensured. The output copper bar is fixed with the main shell through an insulator, so that the output copper bar is guaranteed not to deform when being stressed.
The utility model reduces the installation procedure on the basis of meeting the electric performance of the power unit, and has the characteristics of small volume, low cost, high assembly and maintenance efficiency and the like.
The foregoing description is only examples of the utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and examples of the utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.
Claims (3)
1. The novel electrolytic capacitor type power unit module comprises a box body, wherein the box body consists of a unit main shell, an L-shaped side plate and a straight side plate, and is characterized in that a radiator, a three-phase rectifier bridge, an IGBT, an insulating plate, a rectifier bridge connection row, an IGBT connection row, a direct current bus row, a cement resistor, a direct current capacitor, a bypass contactor, a transformer and a control driving plate are arranged in the box body;
an output copper bar, a three-phase rectifier bridge, an IGBT, a rectifier bridge connecting bar and an IGBT connecting bar are arranged on one side of the radiator; the three-phase rectifier bridge and the IGBT are respectively fixed on the radiator, the three-phase rectifier bridge is connected with the direct current capacitor through a rectifier bridge connecting row, and the IGBT is connected with the direct current capacitor through an IGBT connecting row;
one end of the output copper bar is connected with the IGBT, and the other end extends out of the box body and is fixed with the main shell through an insulator; insulating plates II are used for isolating between the positive and negative of the IGBT connection row; an insulating board I is arranged at the end of the rectifying bridge connecting row and the input cable;
the direct-current capacitor is arranged below the inside of the main shell, is connected with the IGBT and the three-phase rectifier bridge through the direct-current bus bar, and is provided with the cement resistor above;
the transformer is arranged at the front lower part of the main shell and is arranged at the front end of the direct-current capacitor;
the bypass contactor is fixed at the rear side in the main shell and is positioned between the radiator and the control driving plate;
the control driving plate is fixed on the left upper side of the main shell and the right upper part of the direct current capacitor.
2. The novel electrolytic capacitor type power cell module as claimed in claim 1, wherein one side of the main housing is an L-shaped side plate and the other side is a straight side plate, and is fixed to the main housing using a matching bolt.
3. The novel electrolytic capacitor type power unit module as claimed in claim 1, wherein a handle and a fuse are further installed on the outer side of the main housing, the handle is fixed on the outer front surface of the main housing, and the fuse is fixed on the front surface of the main housing through an insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223048407.0U CN218920245U (en) | 2022-11-17 | 2022-11-17 | Novel electrolytic capacitor type power unit module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223048407.0U CN218920245U (en) | 2022-11-17 | 2022-11-17 | Novel electrolytic capacitor type power unit module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218920245U true CN218920245U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223048407.0U Active CN218920245U (en) | 2022-11-17 | 2022-11-17 | Novel electrolytic capacitor type power unit module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218920245U (en) |
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2022
- 2022-11-17 CN CN202223048407.0U patent/CN218920245U/en active Active
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