CN216751506U - Cophase power supply power module - Google Patents
Cophase power supply power module Download PDFInfo
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- CN216751506U CN216751506U CN202122816022.3U CN202122816022U CN216751506U CN 216751506 U CN216751506 U CN 216751506U CN 202122816022 U CN202122816022 U CN 202122816022U CN 216751506 U CN216751506 U CN 216751506U
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Abstract
The utility model relates to a same-phase power supply power module which comprises a module bottom frame, an IGBT (insulated gate bipolar transistor) assembly, a bus capacitor, a bypass switch, a frame breaker and a high-voltage power supply, wherein the IGBT assembly is arranged on the module bottom frame; the bus capacitor is fixedly arranged in the middle of the module bottom frame; the IGBT assembly is arranged on the module bottom frame through a guide rail on the module bottom frame and is arranged side by side with the bus capacitor in the transverse direction; the bypass switch and the frame circuit breaker are fixedly arranged at the two longitudinal ends of the module bottom frame; the high-voltage power supply is fixed on the transverse outer side of the bus capacitor. Through the reasonable layout of the components in the equipment, the power density of the whole set of equipment is improved, the overall size of the equipment is reduced, and the device has the advantages of large power density, convenience in maintenance, simple loop, small stray inductance, safety, reliability and the like.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to a same-phase power supply power module.
Background
In the prior art, a unilateral power supply mode of a rail transit traction network, a traditional traction substation wiring mode and phase change connection thereof determine that an electric phase splitting link necessarily exists on the traction network. When a fault occurs due to the adoption of a ground automatic neutral-section passing device, a train can break through a neutral-section link hard to easily cause a short-circuit fault; and the operation of the locomotive can be influenced when the automatic neutral section passing device on the locomotive fails. The electric phase separation link has a great restriction effect on the high-speed heavy-load train. Therefore, the method applies the modern power electronic technology and the microprocessor control technology to develop the in-phase power supply technology with independent intellectual property rights, realizes the innovation of the traction power supply technology, achieves the win-win purpose of railway and power development, and has important significance.
The traction load of the electrified railway is single-phase alternating current load, so that the three phases of a traction power supply system are seriously unbalanced, and reactive current exists. In order to reduce the influence of three-phase unbalance, the traction transformer adopts phase-change connection, so that the voltages of all power supply sections are different, and the power supply sections must be separated by phase-splitting insulators. Due to the load characteristics of the electrified railway, the current power supply system mainly has a plurality of problems, such as the loss of train speed and traction force easily caused by electric phase separation; the capacity of equipment such as a transformer and the like is large, the investment is high, the utilization rate is low, and the basic electricity charge is high; the traction capacity of the locomotive is reduced due to the fluctuation of the voltage, and the locomotive cannot normally run; negative sequence current caused by single-phase load causes torque pulsation of a rotating motor of a power system and vibration of a unit; harmonic waves can cause heating damage of a rotating motor of the power system, and the power generation, transmission and transformation cost is increased; low power factor, high electricity charge, etc.
The power module is used as a core component of the in-phase power supply device, the structural design of the power module is a difficult problem of the design of the whole in-phase power supply system, the voltage is high, the current is large, components are complex, the electrical performance of the power module is good or bad, and the structural layout is reasonable, so that the performance and the overall dimension of the in-phase power supply device are directly determined.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a same-phase power supply module, which improves the power density of the whole set of equipment and reduces the overall size of the equipment through reasonable layout of parts in the equipment, and has the advantages of high power density, convenience in maintenance, simple loop, small stray inductance, safety, reliability and the like.
In order to achieve the above object, according to one aspect of the present invention, there is provided an in-phase power supply module, including a module bottom frame, an IGBT component, a bus capacitor, a bypass switch, a frame breaker, and a high-voltage power supply; wherein, the first and the second end of the pipe are connected with each other,
the bus capacitor is fixedly arranged in the middle of the module bottom frame;
the IGBT assembly is arranged on the module bottom frame through an IGBT assembly guide rail on the module bottom frame and is arranged side by side with the bus capacitor in the transverse direction;
the bypass switch and the frame circuit breaker are fixedly arranged at the two longitudinal ends of the module bottom frame;
the high-voltage power supply is fixed on the transverse outer side of the bus capacitor.
Further, module underframe frame includes IGBT subassembly guide rail, pulley, bypass switch mounting panel and frame circuit breaker mounting panel.
Furthermore, the number of the bus capacitors is two, and the two bus capacitors are arranged in a staggered mode in the longitudinal direction of the module bottom frame.
Furthermore, the number of the IGBT assemblies is two, and the two IGBT assemblies are arranged on the module bottom frame in a staggered mode in the longitudinal direction.
Further, the IGBT assembly comprises a frame, an IGBT device, an IGBT driving board and a laminated busbar; wherein the content of the first and second substances,
the IGBT device is arranged on the frame;
the IGBT driving board and the laminated busbar are fixedly arranged on the IGBT device.
Further, the frame comprises a water cooling plate, a mounting plate and a guide rail; and the IGBT device is fixedly arranged on the water cooling plate.
Furthermore, the IGBT assembly further comprises an SCE plate, a voltage-sharing resistor, a thermistor and a supporting insulating plate; wherein the content of the first and second substances,
the SCE plate is fixedly arranged on the supporting insulating plate;
the voltage-sharing resistor and the thermistor are both fixedly arranged on the water cooling plate.
Furthermore, the bypass switch is fixedly arranged on the cascade side of the module bottom frame through a bypass switch mounting plate; the frame circuit breaker passes through the fixed parallelly connected side that sets up in module underframe frame of frame circuit breaker mounting panel.
In summary, the present invention provides an in-phase power supply module, which includes a module bottom frame, an IGBT component, a bus capacitor, a bypass switch, a frame breaker, and a high voltage power supply; the bus capacitor is fixedly arranged in the middle of the module bottom frame; the IGBT assembly is arranged on the module bottom frame through a guide rail on the module bottom frame and is arranged side by side with the bus capacitor in the transverse direction; the bypass switch and the frame circuit breaker are fixedly arranged at the two longitudinal ends of the module bottom frame; and the high-voltage power supply is fixed on the transverse outer side of the bus capacitor. Through the reasonable layout of the components in the equipment, the power density of the whole set of equipment is improved, the overall size of the equipment is reduced, and the device has the advantages of large power density, convenience in maintenance, simple loop, small stray inductance, safety, reliability and the like.
The utility model has the following beneficial technical effects:
(1) the heat dissipation mode of water cooling heat dissipation is adopted, the appearance and the self strength of the bus capacitor are fully utilized, the water cooling plate is arranged by a guide rail against the capacitor, and no redundant mounting plate is arranged; the water cooling plate not only dissipates heat for the IGBT device and the voltage equalizing resistor, but also takes away partial heat generated by the bus capacitor, and the heat dissipation effect is good.
(2) The power module has high integration level and comprises: IGBT subassembly, utmost point allies oneself with side bypass switch and connect the copper bar, parallelly connected side frame circuit breaker and connect copper bar, electric capacity subassembly, the female arranging of lamination that converges, high voltage power supply, electric current hall etc. cascade side and parallelly connected side are rationally distributed, and the installation is maintained conveniently.
(3) The power module adopts the staggered layout of the bus and the capacitor, saves space, and the IGBT component beside the capacitor is installed by adopting a guide rail, is convenient to insert and pull, is fixed and reliable, is accurate in positioning, and improves the convenience of installation and maintenance.
(4) This power module bottom frame is the bolt combination, and there is the pulley bottom, openly has the handle, when the module overhauls, makes things convenient for the power module plug.
(5) The power module busbar is of a Z-shaped structure and is directly arranged on the two bus capacitors; the IGBT overlapping row is of an L-shaped structure, the copper bar ends of the incoming and outgoing lines are vertically symmetrical and are directly lapped and fastened with the bus bar, and the problems of current equalization and impurity sense of the IGBT are effectively solved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a co-phased power supply module according to the present invention;
fig. 2 is a schematic structural view of a module bottom frame;
fig. 3 is a top view of an in-phase power supply module.
FIG. 4 is a schematic structural diagram of an IGBT assembly; wherein the content of the first and second substances,
fig. 4(a) is a schematic structural diagram of the IGBT module after removing the stacked bus bar, the SCE board, and the fixing member, and fig. 4(b) is a schematic positional diagram of the SCE board of the IGBT module;
FIG. 5 is a schematic structural diagram of a laminated busbar; wherein the content of the first and second substances,
fig. 5(a) is a schematic perspective view of a laminated busbar, and fig. 5(b) is a schematic side view of the laminated busbar;
FIG. 6 is a schematic diagram of a connection structure of copper bars on the parallel side of the in-phase power supply module;
FIG. 7 is a schematic diagram of a soft connection structure on the cascade side of a same-phase power supply module;
fig. 8 is a schematic diagram of a connection structure of a bypass switch on the cascade side of the in-phase power supply module;
fig. 9 is a schematic structural diagram of a co-phased power supply module with a module housing;
fig. 10 is a schematic view of a valve assembly constructed from a plurality of in-phase power supply modules.
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.
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The utility model provides a same-phase power supply power module, which comprises a module bottom frame 1, an IGBT component 2, a bus capacitor 3, a bypass switch 4, a frame breaker 5 and a high-voltage power supply 6, wherein the overall structure schematic diagram of the same-phase power supply power module is shown in figure 1, and the bus capacitor 3 is fixedly arranged in the middle of the module bottom frame 1 as shown in figure 1; the IGBT assembly 2 is arranged on the module bottom frame 1 through an IGBT assembly guide rail 7 on the module bottom frame 1 and is arranged side by side with the bus capacitor 3 in the transverse direction; the bypass switch 4 and the frame circuit breaker 5 are fixedly arranged at the two longitudinal ends of the module bottom frame; the high-voltage power supply 6 is fixed on the transverse outer side of the bus capacitor. The number of the IGBT assemblies 2 is two, and the two IGBT assemblies 2 are arranged on the module bottom frame 1 in a staggered mode in the longitudinal direction. The number of the bus capacitors 3 is two, and the two bus capacitors 3 are arranged in a staggered mode in the longitudinal direction of the module bottom frame 1. The number of the IGBT modules 2 is two, for example, and the two IGBT modules 2 are arranged in a staggered manner in the longitudinal direction of the module bottom frame 1. The number of the high-voltage power supplies 6 is 4, and the high-voltage power supplies are respectively arranged on the outer sides of the IGBT component 2 and the bus capacitor 3.
A schematic structural diagram of a module base frame is shown in fig. 2, and the module base frame 1 comprises IGBT assembly rails 7, pulleys 8, a bypass switch mounting plate 9 and a frame breaker mounting plate 10. The IGBT module guide rails 7 can be used for fixedly mounting the IGBT module 2, the bypass switch mounting plate 9 is used for mounting the bypass switch 4, and the frame breaker mounting plate 10 is used for mounting the frame breaker 5. The bypass switch 5 is fixedly arranged at the cascade side of the module bottom frame 1 through a bypass switch mounting plate 10; the frame circuit breaker 4 is fixedly arranged on the parallel side of the module bottom frame 1 through a frame circuit breaker mounting plate 9, and a top view of the in-phase power supply module is shown in fig. 3.
Fig. 4 shows a schematic structural diagram of the IGBT assembly, where fig. 4(a) is a schematic structural diagram of the IGBT assembly after removing the busbar, the SCE board, and the fixing member, and fig. 4(b) is a schematic positional diagram of the SCE board of the IGBT assembly. As shown in fig. 4, the IGBT component 2 includes a frame, an IGBT device 11, an IGBT driver board, and a laminated busbar 12; the IGBT device 11 is disposed on the frame, the IGBT driver board and the laminated busbar 12 are both fixedly disposed on the IGBT device 11, fig. 5 shows a schematic structural diagram of the laminated busbar, where fig. 5(a) is a schematic structural diagram of a three-dimensional structure of the laminated busbar, and fig. 5(b) is a schematic structural diagram of a bus side of the laminated busbar. The frame comprises a water cooling plate, a mounting plate and a guide rail 13; the IGBT device 11 is fixedly arranged on the water cooling plate. The IGBT component also comprises an SCE plate 14, a voltage equalizing resistor 15, a thermistor 16, an overlapped support plate 17 and a support insulating plate 141; the voltage-sharing resistor 15 and the thermistor 16 are both fixedly arranged on the water cooling plate. The SCE control board 141 is disposed on the supporting insulation board 141. Connecting the driving plate with the IGBT device 11 by using bolts, and leading out optical fibers through the wire grooves; the laminated busbar 12 is fixed on the IGBT device 11, and bolts are fastened and scribed by using specified torque; the SCE board 14 is arranged on the SCE mounting board 142 and integrally fixed above the laminated busbar 12, and the optical fiber port faces outwards, so that the installation and debugging are facilitated; and finally, fixing the voltage-sharing resistor 15 and the thermistor 16 on the water-cooling plate.
In addition, the in-phase power supply module also comprises structural components such as a current hall 18, a connecting copper bar 19, a flexible connection 20, a reinforced connecting plate, an insulator 21, a lifting ring 22 and a module shell cover 23 (which is installed after debugging is finished). Fig. 6 shows a schematic diagram of a connection structure of copper bars on the parallel side of the in-phase power supply power module, fig. 7 shows a schematic diagram of a soft connection structure on the cascade side of the in-phase power supply power module, fig. 8 shows a schematic diagram of a connection structure of a bypass switch on the cascade side of the in-phase power supply power module, fig. 9 shows a schematic diagram of a structure of a module-equipped casing of the in-phase power supply power module, and fig. 10 shows a schematic diagram of a structure of a valve assembly composed of a plurality of in-phase power supply power modules 01. According to the structure of the in-phase power supply module, after the module bottom frame 1 is assembled, 2 bus capacitors 3 are fixed on the bottom frame 1, and the mounting plates (the upper panel and the front panel) and the reinforcing connecting plates of the 2 bus capacitors 3 are fixed by using lifting holes above the bus capacitors 3; fixing the laminated busbar 12 on the bus capacitor 3 by using a copper bolt; 2 IGBT assemblies are fixed on the side surface of the capacitor and the upper surface of an IGBT assembly guide rail 7; respectively fixing 2 capacitor plates and 4 high-voltage power supplies 6 on the module bottom frame 1 at two sides of the bus capacitor 3; then fixing a bypass switch 4 and a frame breaker 5 at two ends of the module bottom frame 1; a fixed support insulator 21; a connecting copper bar 19, a flexible connection 20 and a current Hall 18 are installed; and after debugging is finished, installing the module shell cover 23, the hanging ring 22 and the like.
The way this in-phase supply power module is assembled is given below.
1. Assembling the IGBT assembly:
(1) fixing the water cooling plate, the mounting plate and the guide rail together to form a frame;
(2) fixing an IGBT driving board on the IGBT device;
(3) fixing the driving plate and the IGBT device, and leading out the optical fiber through the wire passing groove;
(4) the laminated busbar is fixed on the IGBT device;
(5) after the supporting insulating plate is adjusted, fastening bolts by using specified torque and scribing;
(6) the SCE board is arranged on the insulating board and integrally fixed above the stacked row, and the optical fiber port faces outwards, so that the installation and debugging are facilitated;
(7) finally, the voltage-sharing resistor and the thermistor are fixed on the water-cooling plate
2. Installing a bus capacitor on the module bottom frame, installing the bus capacitor in a left-right staggered manner, enabling wiring terminals to face each other, and connecting the upper part of the capacitor and a front mounting plate by using bolts;
3. fixing the bus laminated busbar on the left capacitor and the right capacitor by using copper bolts;
4. 2 IGBT assemblies are fixed on the capacitor top mounting plate and the bottom frame through aluminum guide rails and connected with the stacked bolts;
5. fixing 2 capacitor plates and 4 high-voltage power supplies on bottom frames at two sides of the capacitor respectively;
6. fixing a frame circuit breaker on the parallel side of the bottom frame;
7. connecting a parallel side copper bar, a flexible connection, an insulator and the like;
8. installing a fixed current Hall;
9. fixing a bypass switch at the cascade side of the bottom frame;
10. connecting a copper bar, flexibly connecting and installing a current Hall;
11. and after debugging is finished, installing a module shell cover, a hanging ring and the like.
In summary, the present invention provides an in-phase power supply module, which includes a module bottom frame, an IGBT component, a bus capacitor, a bypass switch, a frame breaker, and a high voltage power supply; the bus capacitor is fixedly arranged in the middle of the module bottom frame; the IGBT assembly is arranged on the module bottom frame through a guide rail on the module bottom frame and is arranged side by side with the bus capacitor in the transverse direction; the bypass switch and the frame circuit breaker are fixedly arranged at the two longitudinal ends of the module bottom frame; and the high-voltage power supply is fixed on the transverse outer side of the bus capacitor. Through the reasonable layout of the components in the equipment, the power density of the whole set of equipment is improved, the overall size of the equipment is reduced, and the device has the advantages of large power density, convenience in maintenance, simple loop, small stray inductance, safety, reliability and the like.
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 (8)
1. The in-phase power supply power module is characterized by comprising a module bottom frame, an IGBT component, a bus capacitor, a bypass switch, a frame breaker and a high-voltage power supply; wherein the content of the first and second substances,
the bus capacitor is fixedly arranged in the middle of the module bottom frame;
the IGBT assembly is arranged on the module bottom frame through an IGBT assembly guide rail on the module bottom frame and is arranged side by side with the bus capacitor in the transverse direction;
the bypass switch and the frame circuit breaker are fixedly arranged at the two longitudinal ends of the module bottom frame;
the high-voltage power supply is fixed on the transverse outer side of the bus capacitor.
2. The in-phase power supply power module of claim 1, wherein the module chassis includes IGBT assembly rails, pulleys, a bypass switch mounting plate, and a frame breaker mounting plate.
3. The in-phase power supply module according to claim 2, wherein there are two bus capacitors, and the two bus capacitors are disposed in a staggered manner in a longitudinal direction of the module bottom frame.
4. The in-phase power supply module according to claim 3, wherein said IGBT assemblies are two, and said two IGBT assemblies are arranged in a staggered manner in a longitudinal direction of a module bottom frame.
5. The in-phase power supply power module according to claim 4, wherein the IGBT assembly comprises a frame, IGBT devices, an IGBT driver board, and a laminated busbar; wherein the content of the first and second substances,
the IGBT device is arranged on the frame;
the IGBT driving board and the laminated busbar are fixedly arranged on the IGBT device.
6. The in-phase power supply power module of claim 5, wherein said frame comprises a water-cooled plate, a mounting plate, and a rail; and the IGBT device is fixedly arranged on the water cooling plate.
7. The in-phase power supply power module according to claim 6, wherein said IGBT assembly further comprises an SCE board, a voltage grading resistor, a thermistor, and a supporting insulating board; wherein the content of the first and second substances,
the SCE plate is fixedly arranged on the supporting insulating plate;
the voltage-sharing resistor and the thermistor are both fixedly arranged on the water-cooling plate.
8. The in-phase power supply module according to claim 7, wherein the bypass switch is fixedly arranged on the cascade side of the module bottom frame through a bypass switch mounting plate; the frame circuit breaker passes through the fixed parallelly connected side that sets up in module underframe frame of frame circuit breaker mounting panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122816022.3U CN216751506U (en) | 2021-11-17 | 2021-11-17 | Cophase power supply power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122816022.3U CN216751506U (en) | 2021-11-17 | 2021-11-17 | Cophase power supply power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216751506U true CN216751506U (en) | 2022-06-14 |
Family
ID=81929202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122816022.3U Active CN216751506U (en) | 2021-11-17 | 2021-11-17 | Cophase power supply power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216751506U (en) |
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2021
- 2021-11-17 CN CN202122816022.3U patent/CN216751506U/en active Active
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Effective date of registration: 20221028 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. |