CN104796009A - Bilaterally-symmetric high-capacity rectifying power unit - Google Patents
Bilaterally-symmetric high-capacity rectifying power unit Download PDFInfo
- Publication number
- CN104796009A CN104796009A CN201510210822.7A CN201510210822A CN104796009A CN 104796009 A CN104796009 A CN 104796009A CN 201510210822 A CN201510210822 A CN 201510210822A CN 104796009 A CN104796009 A CN 104796009A
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- water
- plate
- igbt
- power unit
- drive
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention relates to a rectifying unit for locomotive traction power convertor circuits, in particular to a bilaterally-symmetric high-capacity rectifying power unit in a stacked modular design. Based on a water-cooled substrate, IGBTs (insulated gate array bipolar transistors) are mounted on double sides, with each side provided with four IGBTs; a combined busbar is in a parallel symmetric structure attached to the IGBTs; two composite shield plates are added to the outsides of two sides of the combined busbar; each of the composite shield plates is provided with a drive plate and configuration plate directly mounted on the IGBTs; the drive plates and the configuration plates are connected through a harness; the water-cooled substrate is provided with a quick water connector and a positioning pin; the water connector is disposed at the rear of a power unit; a main circuit is externally connected with an electrical terminal disposed at the front of the power unit; power connectors in bilateral symmetry are dispose on the upper portion of the front of the power unit. The problem that the existing rectifying power unit is complex in electrical connection and water connection, needs large space and accordingly is large in system size and poor in reliability is solved.
Description
Technical field
The present invention relates to for the rectification unit in locomotive traction power conversion circuit, be specially bilaterally symmetric Large Copacity rectified power unit.
Background technology
Along with the development of locomotive AC technology, employing high-power IGBT is that the current transformer application of switch element is increasingly extensive, the conveniently maintenance of main circuit, a kind of multiple IGBT device of main circuit are carried out installation integrated, form power cell, power cell major function comprises the connection of main circuit, the switch control rule of device and heat radiation.According to the difference of main circuit function and capacity, the structure of power cell also has all kinds, adopts different heat radiations, wiring and component layouts structure, and what can make power cell has different embodiments at aspect of performance.
The pattern of existing Large Copacity rectified power unit many employings phase module, namely forms a phase of power transformation circuit, and structure adopts dissymmetric mode more.Because each rectified power unit can only form a phase of power transformation circuit, so for whole power transformation circuit, just need more power cell, make the electrical connection of main circuit be connected complexity with water, take up room large, cause system too fat to move, poor reliability.And structure adopts dissymmetric mode, the drive singal transmission line between drive plate and IGBT can be made to lengthen, cause the instability of signal, thus affect the reliability of whole system work.And the many cables that also adopts of existing Large Copacity rectified power unit transmit driving and feedback signal.Because the switch change-over of Large Copacity rectified power unit carrying high-voltage great-current, cause convertor equipment inside to have stronger electromagnetic interference, driving and feedback signal belong to low-voltage signal, and anti-interference is poor, can be interfered in strong electromagnetic environment, cause transmission and Received signal strength to make mistakes.The pattern of independent insulation board or metallic plate isolation is separately adopted more than on Large Copacity rectified power cellular construction.Employing insulation board is isolated, although ensure that electric clearance and the creepage distance of system, insulation board does not have electromagnetic shielding action separately, causes the electromagnetic interference of switch main circuit to reveal, causes the unsteadiness of other electronic circuits such as drive plate.The mode adopting independent metallic plate to isolate, has good electromagnetic shielding action, but in order to ensure electric clearance and creepage distance, just needs to leave very large space in both sides, causes parts to take up space too large problem.
Summary of the invention
The present invention to be connected complexity to solve the electrical connection of existing rectified power unit with water, take up room greatly and cause the problem of the too fat to move and poor reliability of system, provides bilaterally symmetric Large Copacity rectified power unit.
The present invention adopts following technical scheme to realize: bilaterally symmetric Large Copacity rectified power unit, comprise framework, water-cooling base plate is provided with in framework, two sides of water-cooling base plate are separately installed with four IGBT, IGBT on each side is in parallel between two, form a brachium pontis of rectification circuit, each IGBT is supporting configuration plate, the both sides of water-cooling base plate are also all provided with composite bus bar respectively, composite bus bar is connected with the main circuit terminal of the IGBT of its side, place, the outside of each composite bus bar is provided with composite shielding plate, each composite shielding plate is also provided with two drive plates for driving IGBT, each drive plate drives the IGBT of a pair parallel connection, drive plate is connected with wire harness with configuration plate, drive plate is provided with optical fiber interface, the rear side of water-cooling base plate is provided with two water swivels, one is water supply connector, another is water out adapter, the electric terminal of composite bus bar is arranged on framework front panel place, the front panel of framework is provided with power connector, the outside of drive plate all there is also mounted outer guard plate.
Useful effect of the present invention is:
1) adopt Bilateral Symmetry modularized design, save space, be convenient to safeguard and change, reduce maintenance cost;
2) adopt composite shielding plate technique, meet shielding demand, save space and improve anti-Electro Magnetic Compatibility;
3) adopt optical fiber transmission signal, improve anti-interference, improve the reliability driven;
4) adopt the layout split before and after rapid water joint and electrical connection, effectively make use of space, make power cell external electrical terminal layout more reasonable.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of rectified power unit.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the end view of Fig. 2.
Embodiment
Bilaterally symmetric Large Copacity rectified power unit, comprise framework, water-cooling base plate is provided with in framework, two sides of water-cooling base plate are separately installed with four IGBT, IGBT on each side is in parallel between two, form a brachium pontis of rectification circuit, each IGBT is supporting configuration plate, the both sides of water-cooling base plate are also all provided with composite bus bar respectively, composite bus bar is connected with the main circuit terminal of the IGBT of its side, place, the outside of each composite bus bar is provided with composite shielding plate, each composite shielding plate is also provided with two drive plates for driving IGBT, each drive plate drives the IGBT of a pair parallel connection, drive plate is connected with wire harness with configuration plate, drive plate is provided with optical fiber interface, the rear side of water-cooling base plate is provided with two water swivels, one is water supply connector, another is water out adapter, the electric terminal of composite bus bar is arranged on framework front panel place, the front panel of framework is provided with power connector, the outside of drive plate all there is also mounted outer guard plate.
During concrete enforcement, power cell is based on water-cooling base plate, the high-power IGBT of 4 130mm*190mm encapsulation is respectively installed on water-cooling base plate two surfaces, with the installing hole on water-cooling base plate four angles for relying on the framework installing whole device, in the auxiliary electrical terminal plane of 8 IGBT, each installation one piece configuration plate, realize the voltage stabilizing of IGBT gate drive signals, the functions such as Vce voltage detecting, four IGBT of every side have installed one piece of composite bus bar, utilize bolt by the G of four IGBT inside composite bus bar and its, E main circuit terminal couples together, composition rectifying conversion main circuit, composite bus bar laminated insulation is isolated, the external electric terminal of its three conductive layers extends to the front panel of framework, be respectively AC input terminal S3 (A), S4 (B) and DC output terminal S1 (DC+), S2 (DC-), design and installation insulating supporting seat on the front panel of framework, the electric terminal that composite bus bar stretches out covers the surface of insulating supporting seat, the embedded M12 nut of insulating supporting seat, for busbar electric terminal, outer bolt is connected.The outside of both sides composite bus bar installs two blocks of composite shielding plates additional, composite shielding plate is made up of metallic plate, insulation board and external application insulating barrier, and its surrounding is exposed metal edges edge, is connected with metal frame, can play shielding action, inside it, connecting portion is insulating Design.On the composite shielding plate of both sides, respectively installed two pieces of drive plates, for driving homonymy four IGBT, each drive plate drives two IGBT in parallel, and the input and output of drive plate signal adopt the mode of Fiber connection.The rear side of water-cooling base plate has installed two rapid water joints, one is water inlet, another is delivery port, reliably dock to make device energy and water system, cooled plate is also provided with alignment pin, alignment pin can play guiding and positioning action, and water system is reliably docked under the situation that can't see joint.Above framework front panel, symmetrical power connector is set, introducing device of being powered by the 15V of system.Module both sides are design and installation outer guard plate also, can play protective action to drive plate.Power cell is externally mechanically connected employing 3 fixed forms, is provided with installing hole in power cell front panel bottom side, adopts bolt to be connected with system framework, on power cell front panel top, is provided with 1 long bolt and is fixedly connected with system framework.
The circuit theory diagrams of power cell as shown in Figure 1, in figure, S3 (A) and S4 (B) is AC input terminal, H1a, H2a, H1b, H2b, B1a, B2a, B1b, B2b is 8 high pressure IGBTs, the main circuit of composition rectification unit, by the switch change of IGBT, realize the conversion of AC-to DC, H1a wherein in parallel, H2a and B1a in parallel, B2a forms a brachium pontis of rectification circuit, all the other IGBT form another brachium pontis, each IGBT installs one block of configuration plate, configuration plate realizes the voltage stabilizing of IGBT gate drive signals, the functions such as Vce voltage detecting, rectified power unit is provided with four pieces of drive plates, often organizing two IGBT in parallel adopts one piece of drive plate to control, IGBT is sent to after the drive singal isolated variable that system sends by drive plate, control it to turn on and off, status signal whether working properly for IGBT is fed back to system simultaneously, so that system is protected in time when switch is abnormal.15V power supply supplies the drive plate of rectified power unit by converter system, is drive plate circuit supply.IB1, FB1, IH1, FH1, IH2, FH2, IB2, FB2 are the interface of the external optical fiber of drive plate, comprise drive singal interface and feedback signal interface.The DC output terminal that S1 (DC+), S2 (DC-) are main circuit.
Claims (1)
1. bilaterally symmetric Large Copacity rectified power unit, it is characterized in that comprising framework, water-cooling base plate is provided with in framework, two sides of water-cooling base plate are separately installed with four IGBT, IGBT on each side is in parallel between two, form a brachium pontis of rectification circuit, each IGBT is supporting configuration plate, the both sides of water-cooling base plate are also all provided with composite bus bar respectively, composite bus bar is connected with the main circuit terminal of the IGBT of its side, place, the outside of each composite bus bar is provided with composite shielding plate, each composite shielding plate is also provided with two drive plates for driving IGBT, each drive plate drives the IGBT of a pair parallel connection, drive plate is connected with wire harness with configuration plate, drive plate is provided with optical fiber interface, the rear side of water-cooling base plate is provided with two water swivels, one is water supply connector, another is water out adapter, the electric terminal of composite bus bar is arranged on framework front panel place, the front panel of framework is provided with power connector, the outside of drive plate all there is also mounted outer guard plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210822.7A CN104796009A (en) | 2015-04-29 | 2015-04-29 | Bilaterally-symmetric high-capacity rectifying power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210822.7A CN104796009A (en) | 2015-04-29 | 2015-04-29 | Bilaterally-symmetric high-capacity rectifying power unit |
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| CN104796009A true CN104796009A (en) | 2015-07-22 |
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| CN201510210822.7A Pending CN104796009A (en) | 2015-04-29 | 2015-04-29 | Bilaterally-symmetric high-capacity rectifying power unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018103126A1 (en) * | 2016-12-09 | 2018-06-14 | 中车永济电机有限公司 | Auxiliary converter power unit |
| CN108233725A (en) * | 2016-12-09 | 2018-06-29 | 中车永济电机有限公司 | Traction power module |
| US10064302B2 (en) | 2017-01-17 | 2018-08-28 | Caterpillar Inc. | Power inverter with balanced power flow for multiple electrical machines |
| CN108616219A (en) * | 2016-12-09 | 2018-10-02 | 中车永济电机有限公司 | Four-quadrant power module |
| CN109951054A (en) * | 2017-12-20 | 2019-06-28 | 西安中车永电电气有限公司 | A kind of composite bus bar and power cell of preposition HV Terminal |
| CN112311249A (en) * | 2019-07-30 | 2021-02-02 | 中车株洲电力机车研究所有限公司 | Extensible power device |
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| CN102931866A (en) * | 2012-10-24 | 2013-02-13 | 保定红星高频设备有限公司 | Inverter assembly and inverter power supply |
| CN204231210U (en) * | 2014-09-28 | 2015-03-25 | 北车大连电力牵引研发中心有限公司 | Traction inversion module and traction invertor |
| CN204517678U (en) * | 2015-04-29 | 2015-07-29 | 永济新时速电机电器有限责任公司 | Bilaterally symmetric Large Copacity rectified power unit |
-
2015
- 2015-04-29 CN CN201510210822.7A patent/CN104796009A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931866A (en) * | 2012-10-24 | 2013-02-13 | 保定红星高频设备有限公司 | Inverter assembly and inverter power supply |
| CN204231210U (en) * | 2014-09-28 | 2015-03-25 | 北车大连电力牵引研发中心有限公司 | Traction inversion module and traction invertor |
| CN204517678U (en) * | 2015-04-29 | 2015-07-29 | 永济新时速电机电器有限责任公司 | Bilaterally symmetric Large Copacity rectified power unit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018103126A1 (en) * | 2016-12-09 | 2018-06-14 | 中车永济电机有限公司 | Auxiliary converter power unit |
| CN108233725A (en) * | 2016-12-09 | 2018-06-29 | 中车永济电机有限公司 | Traction power module |
| CN108233729A (en) * | 2016-12-09 | 2018-06-29 | 中车永济电机有限公司 | Auxiliary converter power cell |
| CN108616219A (en) * | 2016-12-09 | 2018-10-02 | 中车永济电机有限公司 | Four-quadrant power module |
| US10064302B2 (en) | 2017-01-17 | 2018-08-28 | Caterpillar Inc. | Power inverter with balanced power flow for multiple electrical machines |
| CN109951054A (en) * | 2017-12-20 | 2019-06-28 | 西安中车永电电气有限公司 | A kind of composite bus bar and power cell of preposition HV Terminal |
| CN112311249A (en) * | 2019-07-30 | 2021-02-02 | 中车株洲电力机车研究所有限公司 | Extensible power device |
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Application publication date: 20150722 |