CN214045400U - Cophase power supply power unit - Google Patents
Cophase power supply power unit Download PDFInfo
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- CN214045400U CN214045400U CN202022608098.2U CN202022608098U CN214045400U CN 214045400 U CN214045400 U CN 214045400U CN 202022608098 U CN202022608098 U CN 202022608098U CN 214045400 U CN214045400 U CN 214045400U
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- igbt
- laminated busbar
- power supply
- capacitor bank
- bus capacitor
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Abstract
The utility model discloses a cophase power supply power unit, include: the device comprises a box body, a water-cooled radiator, an IGBT module, a laminated busbar and a busbar capacitor bank; the water-cooled radiator is vertically fixed at the upper part of the middle of the box body; the IGBT module comprises a cascade side IGBT unit and a parallel side IGBT unit, and the cascade side IGBT and the parallel side IGBT are fixed on the water-cooled radiator back to back; the bus capacitor group is transversely arranged at the lower part of the water-cooled radiator, and the IGBT module is connected with the bus capacitor group through the laminated busbar; the laminated busbar comprises: the IGBT laminated busbar and the bus capacitor bank laminated busbar which are connected with each other are connected with the IGBT module, and the bus capacitor bank laminated busbar is connected with the bus capacitor bank. The laminated busbar is divided into two IGBT laminated busbars and a busbar capacitor group laminated busbar, so that the defect of large size is overcome, the structural compactness of the laminated busbar is improved, and the cost of a power unit is reduced.
Description
Technical Field
The utility model relates to a power equipment field, in particular to cophase power supply power unit.
Background
The electric railway generally adopts a single-phase power frequency alternating current system which is supplied by a public power system, and in order to ensure that single-phase traction load is uniformly distributed in a three-phase power system as far as possible, the electric railway usually adopts a scheme of alternating phase sequence and split-phase partition power supply. With the increase of the demand of high-speed railways and heavy haul railways in China on the capacity of a power supply grid, the influence on the unbalance of the power grid is increased. Compared with the alternate phase sequence and subsection partition traction power supply mode, the in-phase traction power supply mode can cancel the electric phase splitting at the outlet of the traction substation, eliminate the power supply bottleneck, increase the power supply capacity and enhance the energy-saving effect, and meanwhile, can effectively treat the negative sequence current to meet the electric energy quality requirement mainly based on the national standard limit of the three-phase voltage unbalance degree, and is an ideal traction power supply mode for the electrified railway.
The existing in-phase power supply power unit on the market has the following defects: 1. the number of power units in the power cabinet is large, the installation is inconvenient and the cost is high; 2. the power unit mostly adopts air cooling heat dissipation, the heat dissipation effect is poor, and the capacity of a single module is small; 3. the power cabinet provided with the power unit has large volume and large floor area.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cophase power supply power unit, female arranging of IGBT stromatolite through arranging the stromatolite and dividing into two and female arranging of generating line electric capacity group stromatolite is female, overcome the great defect of original whole stromatolite female size, promoted its compact structure nature under the prerequisite of guaranteeing power unit dependable performance, reduced power unit's cost.
In order to solve the above technical problem, an embodiment of the present invention provides an in-phase power supply unit, include: the device comprises a box body, a water-cooled radiator, an IGBT module, a laminated busbar and a busbar capacitor bank;
the water-cooled radiator is vertically fixed at the upper part of the middle of the box body;
the IGBT module comprises a cascade side IGBT unit and a parallel side IGBT unit, and the cascade side IGBT and the parallel side IGBT are fixed on the water-cooled radiator back to back;
the bus capacitor bank is transversely arranged at the lower part of the water-cooled radiator, and the IGBT module is connected with the bus capacitor bank through the laminated busbar;
the laminated busbar comprises: the IGBT laminated busbar and the bus capacitor bank laminated busbar are connected with each other, the IGBT laminated busbar is connected with the IGBT module, and the bus capacitor bank laminated busbar is connected with the bus capacitor bank.
Further, the IGBT laminated busbar and/or the bus capacitor bank laminated busbar are connected by an L-shaped copper bar.
Furthermore, the bottom of the box body is provided with a plurality of rollers; and/or
The front of the box body is provided with a handle, and one side opposite to the handle is provided with a guide pin.
Further, the in-phase power supply unit further includes: a bypass switch;
the bypass switch is connected with the outlet row of the cascade side IGBT unit in parallel.
Further, the in-phase power supply unit further includes: a vacuum contactor;
the vacuum contactor is arranged at the outlet end of the IGBT on the parallel side in series.
Further, the in-phase power supply unit further includes: a fuse;
the fuse is arranged at the leading-out terminal of the IGBT on the parallel side in series.
Further, the case includes: a housing and a base;
the upper part of the shell is provided with a plurality of first heat dissipation holes;
and a plurality of second heat dissipation holes are formed in the lower part of the base.
Further, the in-phase power supply unit further includes: the device comprises an insulating plate, a power supply plate and an SCE control plate;
the insulating plate is fixedly arranged on the bus capacitor stacking row;
the insulation board is fixedly connected with the power panel and the SCE control panel;
the power panel is connected with the direct current bus;
the SCE control panel is connected with the bypass switch, detects direct-current voltage, and sends out a fault signal according to a fault state to control the on/off of the bypass switch.
Further, the in-phase power supply unit further includes: a bleeder resistor;
the bleeder resistor is arranged on one side of the water-cooling radiator.
The embodiment of the utility model provides an above-mentioned technical scheme has following profitable technological effect:
the laminated busbar is divided into two IGBT laminated busbars and a busbar capacitor group laminated busbar, so that the defect that the size of the original integral laminated busbar is large is overcome, the structure compactness of the power unit is improved on the premise of ensuring the reliable performance of the power unit, and the cost of the power unit is reduced.
Drawings
Fig. 1 is a front side isometric view of an in-phase power supply unit provided by an embodiment of the present invention;
fig. 2 is a rear side view of an in-phase power supply unit according to an embodiment of the present invention;
fig. 3 is a right side view of an in-phase power supply unit according to an embodiment of the present invention;
fig. 4 is a left side view of an in-phase power supply unit provided by an embodiment of the present invention;
fig. 5 is a bottom view of the in-phase power supply unit according to an embodiment of the present invention.
Reference numerals:
1. the device comprises a box body, 1.1, a handle, 1.2, a roller, 1.3, a guide pin, 2, a water-cooling radiator, 3, an IGBT module, 4, an IGBT laminated busbar, 4, a bus capacitor group, 6, a bus capacitor group laminated busbar, 7, a connecting copper bar, 8, a bypass switch, 9, a vacuum contactor, 10, a fuse, 11, a bleeder resistor, 12, a cascade side outlet line bar, 13, a parallel side outlet line bar, 14, an SCE control board, 15, a power supply board, 16 and a vacuum contactor drive board.
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 detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative 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.
Fig. 1 is a front axial view of an in-phase power supply unit according to an embodiment of the present invention.
Fig. 2 is a rear side view of the cophase power supply unit according to the embodiment of the present invention.
Fig. 3 is a right side view of an in-phase power supply unit according to an embodiment of the present invention.
Fig. 4 is a left side view of the cophase power supply unit provided by the embodiment of the present invention.
Fig. 5 is a bottom view of the in-phase power supply unit according to an embodiment of the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, an embodiment of the present invention provides an in-phase power supply unit, including: the device comprises a box body, a water-cooled radiator, an IGBT module, a laminated busbar and a busbar capacitor bank; the water-cooled radiator is vertically fixed at the upper part of the middle of the box body; the IGBT module comprises a cascade side IGBT unit and a parallel side IGBT unit, and the cascade side IGBT and the parallel side IGBT are fixed on the water-cooled radiator back to back; the bus capacitor group is transversely arranged at the lower part of the water-cooled radiator, and the IGBT module is connected with the bus capacitor group through the laminated busbar; the laminated busbar comprises: the IGBT laminated busbar and the bus capacitor bank laminated busbar which are connected with each other are connected with the IGBT module, and the bus capacitor bank laminated busbar is connected with the bus capacitor bank.
Further, the IGBT laminated busbar and the bus capacitor bank laminated busbar are connected through an L-shaped copper bar.
Specifically, the bottom of the box body is provided with a plurality of rollers; and/or a handle is arranged on the front surface of the box body, and a guide pin is arranged on one side opposite to the handle.
Specifically, the in-phase power supply unit further includes: a bypass switch; the bypass switch is connected in parallel with the cascade side IGBT unit.
Specifically, the in-phase power supply unit further includes: a vacuum contactor; the vacuum contactor is connected in series with the outlet end of the IGBT on the parallel side.
Specifically, the in-phase power supply unit further includes: a fuse; the fuse is arranged at the outlet end of the IGBT on the parallel side in series.
For the radiating effect who improves the box, the box includes: a housing and a base; the upper part of the shell is provided with a plurality of first heat dissipation holes; the lower part of the base is provided with a plurality of second heat dissipation holes.
Specifically, the in-phase power supply unit further includes: insulation board, power strip and SCE control panel. The insulating plate is fixedly arranged on the bus capacitor stacking row; the insulation board is fixedly connected with the power panel and the SCE control panel; the power panel is connected with the direct current bus; the SCE control board is connected with the bypass switch, detects the direct-current voltage, and sends out a fault signal according to the fault state to control the on-off of the bypass switch.
Specifically, the in-phase power supply unit further includes: a bleeder resistor; the bleeder resistor is arranged on one side of the water-cooling radiator.
The utility model provides an in a specific implementation mode, a cophase power supply unit's power unit includes box 1, water-cooling radiator 2, IGBT module 3, the female row 4 of IGBT stromatolite, electric capacity group 5, the female row 6 of electric capacity group stromatolite, connection copper bar 7, bypass switch 8, vacuum contactor 9, fuse 10, bleeder resistance 11, cascade side outlet wire row 12, parallelly connected side outlet wire row 13, SCE control panel 14, power strip 15, vacuum contactor drive plate 16. The water-cooled radiator 2 is vertically fixed on the middle upper part of the box body 1 through a supporting plate on the box body 1, two cascade side IGBT modules and two parallel side IGBT modules are fixed on the water-cooled radiator 2, and the two cascade side IGBT modules and the two parallel side IGBT modules are respectively connected together through an IGBT laminated busbar 4. The capacitor bank 5 is fixed on the lower part of the water-cooled radiator 2 through a supporting plate on the box body 1 and is connected together through a capacitor bank laminated busbar 6, and the IGBT laminated busbar 4 and the capacitor bank laminated busbar 6 are connected together through a section of L-shaped connecting copper bar 7. The lower part of the capacitor bank laminated busbar 6 is supported by an insulator, so that the capacitor bank 5 is fixed more firmly. An insulating plate is fixed on the right side of the capacitor bank laminated busbar 6, and two SCE control panels 14 and a power panel 15 are fixed on the insulating plate. The bypass switch 8 is fixed inside the front panel of the case 1, and two terminals are connected in parallel with the cascade side outlet 12. Vacuum contactor 9 passes through the support on the box 1 to be fixed at the box 1 left side and leans on the rear position, stretches outside the module behind parallel side outlet wire row 13 one utmost point and the vacuum contactor 9 series connection, and series fuse 10, parallel side outlet wire row 13 another utmost point directly stretches outside the module. The bleeder resistor 11 is fixed on the back of the water-cooled radiator 2, and the vacuum contactor driving plate 16 is fixed on the supporting plate of the water-cooled radiator 9 through a rivet nut column.
As shown in fig. 1, 2 and 5, the box body 1 is composed of a shell and a base, wherein the shell is formed by bending a whole plate, so that the box is attractive and high in strength; the base is equipped with gyro wheel 1.2, and preceding is equipped with handle 1.1, makes things convenient for the module to push in and take out, is equipped with guide pin 1.3 at the back, and is favorable to spacing when the module assembly. The lower part of the base is provided with heat dissipation holes, which is beneficial to heat dissipation of the capacitor bank. Two square holes are formed in the upper portion of the shell, heat dissipation is facilitated, and meanwhile the copper bar is convenient to assemble.
As shown in fig. 2, the bypass switch 8 is connected in parallel to the cascade side of the power unit, and when the power unit itself fails, the bypass switch 8 may be closed, so that the unit exits from operation, and the system may still form a current loop through the bypass switch 8 to continue to operate.
As shown in fig. 2, the vacuum contactor 9 and the fuse 10 are connected in series on the parallel side of the power unit, and when the system meets the operation condition, the vacuum contactor 9 can be closed automatically, so that grid-connected operation is realized. When the fault current of the power unit is too large, the fuse 10 cuts off a loop to prevent the fault from further expanding, and meanwhile, the fuse 10 is arranged outside the power unit and is convenient to replace.
As shown in fig. 3, the power unit adopts a mode of dividing the IGBT laminated busbar 4 and the capacitor bank laminated busbar 6 into two parts and connecting the two parts through the L-shaped connecting copper bar 7, so that the original design scheme of connecting the whole laminated busbar is replaced, the size of the laminated busbar is greatly reduced, and the cost of the power unit is reduced.
As shown in fig. 1, the dc power board 15 inside the power unit is connected to a dc bus, and when the bus voltage reaches a power starting voltage of 300V to 3000V, the dc power module is automatically started to supply power to the driving circuit board and the protection circuit board in the power unit.
As shown in fig. 1, the SCE control board 14 inside the power unit is used to detect the dc voltage in the power unit, send out a fault signal according to the fault state of the power unit, and control the input of the bypass switch to switch the power unit out of the operating system, so as to ensure that the fault of the power unit does not affect the operation of the system.
As shown in figure 1, the power unit IGBT module 3 is composed of an IGBT and a drive plate, and the module is compact in structure, attractive in appearance and high in energy density.
The embodiment of the utility model provides a aim at protecting a cophase power supply power unit, include: the device comprises a box body, a water-cooled radiator, an IGBT module, a laminated busbar and a busbar capacitor bank; the water-cooled radiator is vertically fixed at the upper part of the middle of the box body; the IGBT module comprises a cascade side IGBT unit and a parallel side IGBT unit, and the cascade side IGBT and the parallel side IGBT are fixed on the water-cooled radiator back to back; the bus capacitor group is transversely arranged at the lower part of the water-cooled radiator, and the IGBT module is connected with the bus capacitor group through the laminated busbar; the laminated busbar comprises: the IGBT laminated busbar and the bus capacitor bank laminated busbar which are connected with each other are connected with the IGBT module, and the bus capacitor bank laminated busbar is connected with the bus capacitor bank. The technical scheme has the following effects:
the laminated busbar is divided into two IGBT laminated busbars and a busbar capacitor group laminated busbar, so that the defect that the size of the original integral laminated busbar is large is overcome, the structure compactness of the power unit is improved on the premise of ensuring the reliable performance of the power unit, and the cost of the power unit is reduced.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. 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 (9)
1. A power cell with in-phase power supply, comprising: the device comprises a box body, a water-cooled radiator, an IGBT module, a laminated busbar and a busbar capacitor bank;
the water-cooled radiator is vertically fixed at the upper part of the middle of the box body;
the IGBT module comprises a cascade side IGBT unit and a parallel side IGBT unit, and the cascade side IGBT and the parallel side IGBT are fixed on the water-cooled radiator back to back;
the bus capacitor bank is transversely arranged at the lower part of the water-cooled radiator, and the IGBT module is connected with the bus capacitor bank through the laminated busbar;
the laminated busbar comprises: the IGBT laminated busbar and the bus capacitor bank laminated busbar are connected with each other, the IGBT laminated busbar is connected with the IGBT module, and the bus capacitor bank laminated busbar is connected with the bus capacitor bank.
2. The in-phase supply power unit of claim 1,
the IGBT laminated busbar and the bus capacitor bank laminated busbar are connected through an L-shaped copper bar.
3. The in-phase supply power unit of claim 1,
the bottom of the box body is provided with a plurality of rollers;
the front of the box body is provided with a handle, and one side opposite to the handle is provided with a guide pin.
4. The in-phase power supply power unit of claim 1, further comprising: a bypass switch;
the bypass switch is connected with the outlet row of the cascade side IGBT unit in parallel.
5. The in-phase power supply power unit of claim 1, further comprising: a vacuum contactor;
the vacuum contactor is arranged at the outlet end of the IGBT on the parallel side in series.
6. The in-phase power supply power unit of claim 1, further comprising: a fuse;
the fuse is arranged at the leading-out terminal of the IGBT on the parallel side in series.
7. The in-phase supply power unit of claim 1,
the box body comprises: a housing and a base;
the upper part of the shell is provided with a plurality of first heat dissipation holes;
and a plurality of second heat dissipation holes are formed in the lower part of the base.
8. The in-phase power supply power unit of claim 4, further comprising: the device comprises an insulating plate, a power supply plate and an SCE control plate;
the insulating plate is fixedly arranged on the bus capacitor stacking row;
the insulation board is fixedly connected with the power panel and the SCE control panel;
the power panel is connected with the direct current bus;
the SCE control panel is connected with the bypass switch, detects direct-current voltage, and sends out a fault signal according to a fault state to control the on/off of the bypass switch.
9. The in-phase power supply power unit of claim 1, further comprising: a bleeder resistor;
the bleeder resistor is arranged on one side of the water-cooling radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022608098.2U CN214045400U (en) | 2020-11-12 | 2020-11-12 | Cophase power supply power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022608098.2U CN214045400U (en) | 2020-11-12 | 2020-11-12 | Cophase power supply power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214045400U true CN214045400U (en) | 2021-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022608098.2U Active CN214045400U (en) | 2020-11-12 | 2020-11-12 | Cophase power supply power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214045400U (en) |
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2020
- 2020-11-12 CN CN202022608098.2U patent/CN214045400U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221019 Address after: No. 4138, Sunshine Avenue, Xuchang Economic Development Zone, Henan 461000 Patentee after: Henan Xuji Power Electronics Co.,Ltd. Patentee after: XJ Group Corp. Patentee after: XJ ELECTRIC Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XJ Group Corp. Patentee before: XJ ELECTRIC Co.,Ltd. |
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| TR01 | Transfer of patent right |