CN109742923B - Large-capacity power cabinet - Google Patents
Large-capacity power cabinet Download PDFInfo
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- CN109742923B CN109742923B CN201811506196.6A CN201811506196A CN109742923B CN 109742923 B CN109742923 B CN 109742923B CN 201811506196 A CN201811506196 A CN 201811506196A CN 109742923 B CN109742923 B CN 109742923B
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Abstract
The invention discloses a large-capacity power cabinet which comprises a power cabinet frame and a plurality of power units arranged in the power cabinet frame, wherein input and output long laminated busbars are arranged on the left and right sides of each power unit, an alternating current input bar and an alternating current output bar are arranged in the power cabinet frame in parallel in the front and at the back of the bottom in the power cabinet frame, a plurality of cooling water inlet pipes are arranged between the right input and output long laminated busbar and the right side surface of the power cabinet frame, and a plurality of cooling water outlet pipes are arranged between the left input and output long laminated busbar and the left side surface of the power cabinet frame; the large-capacity power cabinet disclosed by the invention has the advantages of large capacity, high power density, high modular design degree, compact structure, capability of satisfying front disassembly and assembly, simplicity and convenience in installation and maintenance, strong capacity expansion capability of the cabinet body, simple and attractive whole cabinet arrangement, and suitability for engineering application, and a single cabinet can reach megawatt level.
Description
Technical Field
The invention belongs to the technical field of electrical equipment, and particularly relates to a high-capacity power cabinet, in particular to a variable frequency cabinet which is single-cabinet capacity megawatt, small in size, high in power density, high in modular design degree, easy to disassemble and assemble and convenient to maintain.
Background
The frequency conversion cabinet is a cabinet body widely used in the field of power electronics, and becomes a power dragging mode popularized at present due to good starting performance, speed regulation performance and energy saving effect. In recent years, with the rapid development of economy, the environmental protection requirement of the ship field on ports near shore is higher and higher, and the traditional power supply method after ships are landed is provided by using a ship generator, but the generator has low efficiency and large pollution when running at low speed, and poses serious threats to offshore water bodies and port environments, and violates the national environmental requirements on wharf ports. To this end, ports are commonly powered onshore to provide clean energy for ships in order to solve pollution problems. The shore power supply technology is to switch a generator on a ship into a shore power supply for power supply after the ship is landed. Can effectively reduce the emission of polluted gas and reduce noise.
At present, the shore power supply technology is in the development stage, and the power cabinet is always the key point of research as the most important component of the shore power supply system. In order to provide an onshore power supply for more ship types, the requirements of the port on the power cabinet are higher, on one hand, the capacity is large, on the other hand, the power unit of the cabinet body is easy to disassemble and assemble, convenient to maintain and good in expandability. Therefore, the invention provides the high-capacity power cabinet which has the advantages of large capacity, megawatt level of single cabinet capacity, small volume, high power density, high modular design degree, easiness in assembly and disassembly and convenience in maintenance, capability of determining the number of the power cabinets according to capacity requirements and good capacity expansion performance. The method has high service performance not only in the field of shore power, but also in other occasions with high requirements on capacity.
Disclosure of Invention
The invention aims to design a high-capacity power cabinet according to the defects of the prior art, and aims to solve the problems that the power cabinet in a ship shore power supply system is high in capacity requirement, a power unit of a cabinet body is easy to disassemble and assemble and convenient to maintain, and meanwhile, the expandability is good. The invention is mainly used for a shore power supply system, but has good universality for other occasions with high requirements on power.
The technical scheme adopted by the invention for solving the technical problems is as follows: a large-capacity power cabinet comprises a power cabinet frame and a plurality of power units sequentially arranged in the power cabinet frame from top to bottom, wherein the left side and the right side of each power unit are respectively provided with an input-output long laminated busbar positioned in the power cabinet frame, the front and the back of the bottom in the power cabinet frame are side by side provided with a plurality of alternating current input rows and alternating current output rows respectively connected with the input-output long laminated busbars, a plurality of cooling water inlet pipes communicated with the power units are also arranged between the input-output long laminated busbar on the right side and the right side surface of the power cabinet frame, and a plurality of cooling water outlet pipes communicated with the power units are also arranged between the input-output long laminated busbar on the left side and the left side surface of the power cabinet frame;
the power unit is formed by oppositely mounting a rectification combination unit and an inversion combination unit, the rectification combination unit or the inversion combination unit is formed by an L-shaped laminated busbar, a power module and a supporting capacitor module, and the L-shaped laminated busbar is connected with the input and output long laminated busbar; the support capacitor module is arranged on the inner side of a vertical copper bar of the L-shaped laminated busbar along the vertical direction, and the power module is arranged between the horizontal copper bar of the L-shaped laminated busbar and the support capacitor module along the horizontal direction.
The power module comprises a power module water-cooling plate and a power device arranged on the power module water-cooling plate, the supporting capacitor module comprises a supporting capacitor module frame and a plurality of supporting capacitors arranged on the supporting capacitor module frame, and power module mounting guide rails matched with the power module for use are further arranged at two ends of the supporting capacitor module frame.
The power module water-cooling plate is also provided with a cooling water inlet nozzle and a cooling water outlet nozzle respectively, the cooling water inlet nozzle is communicated with the cooling water inlet pipe, and the cooling water outlet nozzle is communicated with the cooling water outlet pipe.
The L-shaped laminated busbar is provided with a plurality of L-shaped laminated busbar direct current interfaces and L-shaped laminated busbar alternating current interfaces respectively; the input and output long laminated busbar is respectively provided with a plurality of long laminated busbar alternating current output interfaces, long laminated busbar direct current interfaces, long laminated busbar alternating current input interfaces, long laminated busbar external alternating current output interfaces and long laminated busbar external alternating current input interfaces; the L-shaped laminated busbar alternating current interface is connected with the long laminated busbar alternating current output interface or the long laminated busbar alternating current input interface, the L-shaped laminated busbar direct current interface is connected with the long laminated busbar direct current interface, the long laminated busbar external alternating current output interface is connected with the alternating current output bar, and the long laminated busbar external alternating current input interface is connected with the alternating current input bar.
The power device comprises an IGBT, a clamping diode and a discharge resistor.
The invention has the beneficial effects that:
1, the large-capacity power cabinet disclosed by the invention has the advantages of large capacity, wide coverage power range, small volume, compact cabinet body design and high power density, and a single cabinet can reach megawatt level.
2, the high-capacity power cabinet disclosed by the invention has high modular design degree, the structures of six supporting capacitor modules in the high-capacity power cabinet are consistent, the layout of the six power modules is also the same, rectification and inversion are controlled by adjusting and controlling modes, and the whole cabinet body is easy to disassemble and assemble and convenient to maintain.
3, the large-capacity power cabinet body disclosed by the invention has good capacity expansion performance, and can transmit electric energy by a single cabinet or by a plurality of cabinets.
4, the whole cabinet body of the high-capacity power cabinet disclosed by the invention is reasonable in arrangement, attractive in structure and easy to popularize in an engineering mode.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a front view of the present invention with the cabinet removed;
FIG. 5 is a left side view of the present invention with the cabinet removed;
FIG. 6 is a top view of the present invention with the cabinet removed;
FIG. 7 is a side view of the internal power unit of the present invention;
fig. 8 is a side view of the internal rectification block (or inversion block) of the power unit of the present invention;
fig. 9 is a front view of the internal rectification combining unit (or inversion combining unit) of the power unit of the present invention;
FIG. 10 is a front view of an L-shaped laminated busbar of the present invention;
FIG. 11 is a right side view of the L-shaped laminated busbar of the present invention;
FIG. 12 is a front view of the power module of the present invention;
FIG. 13 is a left side view of the power module of the present invention;
FIG. 14 is a front view of the supporting capacitive module of the present invention;
FIG. 15 is a bottom view of the support capacitor module of the present invention;
fig. 16 is a front view of an input/output long laminated busbar according to the present invention;
fig. 17 is an overall structural view of the present invention.
The figures are numbered: the power supply system comprises a power cabinet frame, 2 power units, 3 alternating current input bars, 4 input and output long laminated busbars, 5 alternating current output bars, 6 cooling water inlet pipes, 7 cooling water outlet pipes, 8L-shaped laminated busbars, 9 power modules, 10 supporting capacitor modules, 11L-shaped laminated busbar direct current interfaces, 12L-shaped laminated busbar alternating current interfaces, 13 power module water cooling plates, 14 power devices, 151 cooling water inlet nozzles, 152 cooling water outlet nozzles, 16 supporting capacitor module frames, 17 supporting capacitors, 18 power module mounting guide rails, 19 long laminated busbar alternating current output interfaces, 20 long laminated busbar direct current interfaces, 21 long laminated busbar alternating current input interfaces, 22 long laminated busbar external alternating current output interfaces and 23 long laminated busbar external alternating current input interfaces.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention discloses a large-capacity power cabinet, which is shown in figures 1 to 3 and comprises a power cabinet frame 1 and three power units 2 which are arranged in the power cabinet frame 1 in three layers from top to bottom, the left side and the right side of the power unit 2 are respectively provided with an input and output long laminated busbar 4 positioned in the power cabinet frame 1, six alternating current input bars 3 respectively connected with an input and output long laminated busbar 4 are arranged at the front bottom in the power cabinet frame 1 side by side, six alternating current output bars 5 which are respectively connected with the input and output long laminated busbar 4 are arranged at the rear bottom in the power cabinet frame 1 side by side, two cooling water inlet pipes 6 which are respectively communicated with the power unit 2 are arranged at the inner side corner of the right side surface of the power cabinet frame 1 from bottom to top, and two cooling water outlet pipes 7 which are respectively communicated with the power unit 2 are arranged at the inner side corner of the left side surface of the power cabinet frame 1 from bottom to top.
Referring to fig. 4 to 9, the power unit 2 is formed by oppositely mounting a rectifying combination unit and an inverting combination unit, the rectifying combination unit or the inverting combination unit is formed by an L-shaped laminated busbar 8, a power module 9 and a supporting capacitor module 10, and the L-shaped laminated busbar 8 is connected with the input and output long laminated busbar 4; the support capacitor module 10 is arranged on the inner side of a vertical copper bar of the L-shaped laminated busbar 8 along the vertical direction, and the power module 9 is arranged between the horizontal copper bar of the L-shaped laminated busbar 8 and the support capacitor module 10 along the horizontal direction. The support capacitor modules 10 of the rectification combination unit and the support capacitor modules 10 of the inversion combination unit are arranged back to back, and the power modules 9 of the rectification combination unit and the power modules 9 of the inversion combination unit are arranged in a central symmetry mode on an upper plane and a lower plane formed by the two support capacitor modules 10.
Referring to fig. 12 and 13, the power module 9 includes a power module water-cooling plate 13 and a power device 14 disposed on the power module water-cooling plate 13, the power module water-cooling plate 13 is further provided with a cooling water inlet nozzle 151 and a cooling water outlet nozzle 152, the cooling water inlet nozzle 151 is communicated with the cooling water inlet pipe 6, and the cooling water outlet nozzle 152 is communicated with the cooling water outlet pipe 7; the power device 14 includes an IGBT, a clamping diode, and a discharge resistor.
Referring to fig. 14 and 15, the supporting capacitor module 10 includes a supporting capacitor module frame 16 and a plurality of supporting capacitors 17 disposed on the supporting capacitor module frame 16, power module mounting rails 18 used in cooperation with the power module 9 are further disposed at two ends of the supporting capacitor module frame 16, and the power unit 9 slides in and slides out through the power module mounting rails 18 to be mounted and fixed when being mounted on the upper and lower surfaces of the supporting capacitor module 10.
Referring to fig. 10 and 11, a plurality of L-shaped laminated busbar dc interfaces 11 and L-shaped laminated busbar ac interfaces 12 are respectively disposed on the L-shaped laminated busbar 8. Referring to fig. 16, the input/output long laminated busbar 4 is provided with three long laminated busbar ac output interfaces 19, three long laminated busbar dc interfaces 20, three long laminated busbar ac input interfaces 21, three long laminated busbar external ac output interfaces 22, and three long laminated busbar external ac input interfaces 23, respectively. The long laminated busbar alternating current output interface 19 is an alternating current output interface for connecting the input/output long laminated busbar 4 with the rectification combination unit and is connected with the L-shaped laminated busbar alternating current interface 12 of the rectification combination unit; the long laminated busbar AC input interface 21 is an AC input interface for connecting the input/output long laminated busbar 4 with the inversion combination unit, and is connected with the L-shaped laminated busbar AC interface 12 of the inversion combination unit. The L-shaped laminated busbar DC interface 11 is connected with the long laminated busbar DC interface 20, the long laminated busbar external AC output interface 22 is connected with the AC output bar 5, and the long laminated busbar external AC input interface 23 is connected with the AC input bar 3.
As shown in fig. 17, the whole power transmission relationship of the large-capacity power cabinet of the present invention is: firstly, external six-phase alternating current enters from the bottom of a power cabinet frame 1 and is connected with six alternating current input rows 3 in front of the bottom in the power cabinet frame 1; the six alternating current input bars 3 are connected with two input and output long laminated busbars 4 arranged on the inner sides of two side faces of a power cabinet frame 1 in three groups, wherein three alternating current input bars 3 on the left side are connected with three alternating current input interfaces 23 on the input and output long laminated busbars 4 on the left side in the power cabinet frame 1, which are close to the front part of the power cabinet frame 1, and three alternating current input bars 3 on the right side are connected with three alternating current input interfaces 23 on the input and output long laminated busbars 4 on the right side in the power cabinet frame 1, which are close to the front part of the power cabinet frame 1, so that electric energy is transmitted to the two input and output long laminated busbars 4; two input and output long laminated busbars 4 on two sides in a power cabinet frame 1 transmit electric energy to a rectification combination unit in three power units 2 through an L-shaped laminated busbar 8, the rectification combination unit transmits the electric energy to the two input and output long laminated busbars 4, the two input and output long laminated busbars 4 transmit the electric energy to an inversion combination unit in the three power units 2 through the L-shaped laminated busbar 8, the inversion power unit transmits the electric energy to the two input and output long laminated busbars 4, the two input and output long laminated busbars 4 transmit the electric energy to six alternating current output bars 5 behind the bottom in the power cabinet frame 1, and the six alternating current output bars 5 at the back bottom in the power cabinet frame 1 finally output the alternating current electric energy to the outside.
The large-capacity power cabinet disclosed by the invention has the advantages of large capacity, wide coverage power range, small volume, compact cabinet body design and high power density, and a single cabinet can reach megawatt level.
The high-capacity power cabinet disclosed by the invention has high modular design degree, the structures of the six supporting capacitor modules 10 in the high-capacity power cabinet are consistent, the layout of the six power modules 9 is also the same, rectification and inversion are controlled by adjusting and controlling modes, and the whole cabinet body is easy to disassemble and assemble and convenient to maintain.
The high-capacity power cabinet body disclosed by the invention has good capacity expansion performance, and can transmit electric energy by a single cabinet or by a plurality of cabinets.
The whole cabinet body of the large-capacity power cabinet disclosed by the invention is reasonable in arrangement, attractive in structure and easy to popularize in an engineering mode.
The above-described embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be applied, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the inventive concept of the present invention, and these embodiments are within the scope of the present invention.
Claims (1)
1. A large capacity power cabinet which characterized in that: comprises a power cabinet frame (1) and a plurality of power units (2) which are arranged in the power cabinet frame (1) from top to bottom in sequence, the left side and the right side of the power unit (2) are respectively provided with an input-output long laminated busbar (4) positioned in the power cabinet frame (1), a plurality of alternating current input rows (3) and alternating current output rows (5) which are respectively connected with the input and output long laminated busbar (4) are arranged in parallel at the front and back of the bottom in the power cabinet frame (1), a plurality of cooling water inlet pipes (6) communicated with the power unit (2) are also arranged between the input and output long laminated busbar (4) on the right side and the right side surface of the power cabinet frame (1), and a plurality of cooling water outlet pipes (7) communicated with the power unit (2) are also arranged between the input and output long laminated busbar (4) on the left side and the left side surface of the power cabinet frame (1);
the power unit (2) is formed by oppositely mounting a rectification combination unit and an inversion combination unit, the rectification combination unit or the inversion combination unit is formed by an L-shaped laminated busbar (8), a power module (9) and a supporting capacitor module (10), and the L-shaped laminated busbar (8) is connected with the input and output long laminated busbar (4); the supporting capacitor module (10) is arranged on the inner side of a vertical copper bar of the L-shaped laminated busbar (8) along the vertical direction, and the power module (9) is arranged between a horizontal copper bar of the L-shaped laminated busbar (8) and the supporting capacitor module (10) along the horizontal direction;
the power module (9) comprises a power module water cooling plate (13) and a power device (14) arranged on the power module water cooling plate (13), the power device (14) comprises an IGBT, a clamping diode and a discharge resistor, the support capacitor module (10) comprises a support capacitor module frame (16) and a plurality of support capacitors (17) arranged on the support capacitor module frame (16), and power module mounting guide rails (18) matched with the power module (9) are further arranged at two ends of the support capacitor module frame (16);
the power module water cooling plate (13) is also provided with a cooling water inlet nozzle (151) and a cooling water outlet nozzle (152), the cooling water inlet nozzle (151) is communicated with a cooling water inlet pipe (6), the cooling water outlet nozzle (152) is communicated with a cooling water outlet pipe (7), and the L-shaped laminated busbar (8) is provided with a plurality of L-shaped laminated busbar direct current interfaces (11) and L-shaped laminated busbar alternating current interfaces (12) respectively; the input and output long laminated busbar (4) is respectively provided with a plurality of long laminated busbar alternating current output interfaces (19), long laminated busbar direct current interfaces (20), long laminated busbar alternating current input interfaces (21), long laminated busbar external alternating current output interfaces (22) and long laminated busbar external alternating current input interfaces (23); the L-shaped laminated busbar alternating current interface (12) is connected with the long laminated busbar alternating current output interface (19) or the long laminated busbar alternating current input interface (21), the L-shaped laminated busbar direct current interface (11) is connected with the long laminated busbar direct current interface (20), the long laminated busbar external alternating current output interface (22) is connected with the alternating current output bar (5), and the long laminated busbar external alternating current input interface (23) is connected with the alternating current input bar (3);
the support capacitor modules (10) of the rectification combination unit and the support capacitor modules (10) of the inversion combination unit are arranged back to back, and the power modules (9) of the rectification combination unit and the power modules (9) of the inversion combination unit are arranged in a central symmetry mode on the upper plane and the lower plane formed by the two support capacitor modules (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506196.6A CN109742923B (en) | 2018-12-10 | 2018-12-10 | Large-capacity power cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506196.6A CN109742923B (en) | 2018-12-10 | 2018-12-10 | Large-capacity power cabinet |
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| Publication Number | Publication Date |
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| CN109742923A CN109742923A (en) | 2019-05-10 |
| CN109742923B true CN109742923B (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811506196.6A Active CN109742923B (en) | 2018-12-10 | 2018-12-10 | Large-capacity power cabinet |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211699B (en) * | 2020-01-16 | 2021-11-19 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Power module of multiphase H-bridge high-power-density frequency converter |
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| CN103178721A (en) * | 2013-04-07 | 2013-06-26 | 冶金自动化研究设计院 | High-capacity five-level converter power cabinet |
| CN104201866A (en) * | 2014-09-16 | 2014-12-10 | 北京金自天正智能控制股份有限公司 | Insulated gate bipolar transistor three-level power cabinet |
| CN104270014A (en) * | 2014-07-31 | 2015-01-07 | 深圳市英威腾电气股份有限公司 | Three-level high-power module structure and power conversion unit |
| CN204349816U (en) * | 2014-12-25 | 2015-05-20 | 深圳市英威腾电气股份有限公司 | A kind of three level semiconductor module, lamination copper bar, facies unit circuit and converter |
| CN107800306A (en) * | 2017-11-23 | 2018-03-13 | 北京金自天正智能控制股份有限公司 | A kind of high-power AC and DC drive rectifier cabinet based on heat pipe heat radiation technology |
| CN207588713U (en) * | 2017-10-26 | 2018-07-06 | 西安许继电力电子技术有限公司 | A kind of total power metro traction power supply device power module |
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2018
- 2018-12-10 CN CN201811506196.6A patent/CN109742923B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178721A (en) * | 2013-04-07 | 2013-06-26 | 冶金自动化研究设计院 | High-capacity five-level converter power cabinet |
| CN104270014A (en) * | 2014-07-31 | 2015-01-07 | 深圳市英威腾电气股份有限公司 | Three-level high-power module structure and power conversion unit |
| CN104201866A (en) * | 2014-09-16 | 2014-12-10 | 北京金自天正智能控制股份有限公司 | Insulated gate bipolar transistor three-level power cabinet |
| CN204349816U (en) * | 2014-12-25 | 2015-05-20 | 深圳市英威腾电气股份有限公司 | A kind of three level semiconductor module, lamination copper bar, facies unit circuit and converter |
| CN207588713U (en) * | 2017-10-26 | 2018-07-06 | 西安许继电力电子技术有限公司 | A kind of total power metro traction power supply device power module |
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