CN107911033A - Optimize the design method and locomotive unsteady flow power cell of main circuit totality stray inductance - Google Patents
Optimize the design method and locomotive unsteady flow power cell of main circuit totality stray inductance Download PDFInfo
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- CN107911033A CN107911033A CN201711388371.1A CN201711388371A CN107911033A CN 107911033 A CN107911033 A CN 107911033A CN 201711388371 A CN201711388371 A CN 201711388371A CN 107911033 A CN107911033 A CN 107911033A
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- 238000013461 design Methods 0.000 title claims abstract description 41
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 48
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims description 9
- 238000005457 optimization Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- 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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of design method and locomotive unsteady flow power cell for optimizing main circuit totality stray inductance, the main circuit connection of this method uses composite bus bar, and in the design of power module and current transformer Support Capacitor busbar, carry out considering for whole system stray inductance design parameter, meet the requirement of each several part stray inductance, and cancel absorbing circuit.The present invention be directed to influence of the main circuit stray inductance to switching device, the optimum design method of proposition main circuit stray inductance, and applies in the designing and developing of diesel locomotive unsteady flow power cell.The design can reduce the use of switching device absorbing circuit, while switching device reliability service is ensured, reduce design cost, reduce the volume and weight of device, the design of locomotive converter system is more optimized.
Description
Technical field
The invention belongs to technical field of diesel locomotive, is related to locomotive unsteady flow power cell, especially a kind of optimization main circuit
The design method and locomotive unsteady flow power cell of overall stray inductance.
Background technology
The development of locomotive AC drive technology, it is increasingly wide as the current transformer application of switching device using high-power IGBT
It is general.With the raising of current transformer power grade, the requirement to abilities such as pressure-resistant, overcurrent, insulation and heat dissipations is harsher, often needs
Powerful switching device, large-sized passive element and cooling system are used, causes the connecting wire ruler between switching device
Very little increase, distance between conductors lengthen, so that the stray parameter increase of main circuit line.Dc bus stray parameter may cause
Device and equipment damage, have a great influence system reliability and runnability, especially in transient state commutation course.
Diesel locomotive alternating-current actuating system is that single diesel engine unit generates electricity, and diesel engine dragging main generator, exports three-phase alternating current
Voltage, through uncontrollable rectifier circuit, chopper circuit, intermediate DC link, inverter circuit, driving traction electric machine leads so as to complete locomotive
Draw control, system main circuit principle is as shown in Figure 1.
Because the limitation in locomotive space, also for the maintenance for facilitating main circuit, existing converter plant power cell is gradual
Start to use modular design, by the multiple switch device of main circuit and its drive circuit, radiator, main circuit line etc.
Integrated, form power cell.Power cell main circuit line also begins to widely used stack bus bar technology and replaces traditional electricity
Cable twisted wire mode, by increasing the overlapping coupling area between positive and negative busbar, reduces the stray inductance of main circuit, at the same using compared with
The connection between high current, high-voltage switch device is realized in small space, reduces system cost, improves equipment dependability and matter
Amount.
Due to realize different circuit functions, main circuit of electric locomotive include rectification unit, copped wave unit intermediate DC link,
Inverter circuit etc., thus as the composite bus bar of main circuit connection, also including polytype, such as：Rectification+compound the mother of copped wave module
Row, inverter module composite bus bar and with the capacitor bus-bar of intermediate supports capacitance connection etc..In conventional product design, design
The division of labor is thinner, but because the difference of division of design, as the designer of power module, only considers that module self compounding busbar is miscellaneous
Scattered inductance parameters, and design of the designer of converter cabinet for capacitor bus-bar, usually only consider the reasonability of structure, because not having
Have and be directly connected with switching device, its electric property cannot be considered.As the whole converter plant after being completed,
To avoid overall stray inductance parameter from causing damage to switching device, it is necessary to increase absorbing circuit.
In the prior art, although single power module stray inductance meets the requirements, but the stray electrical inductance value of whole system
The requirement of switching device is not still met, it is therefore desirable to additionally increase absorbing circuit, ensure the reliability service of switching device.Inhale
Receive the use of circuit so that the volume and weight increase of power cell, occupied space is big, causes that system is too fat to move, design cost increases
Add.
The content of the invention
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art, there is provided one kind optimization main circuit totality stray inductance
Design method and locomotive unsteady flow power cell.
The purpose of the present invention is what is be achieved through the following technical solutions：
8. present invention firstly provides a kind of design method for optimizing main circuit totality stray inductance：Main circuit connection is using multiple
Busbar is closed, and in the design of power module and current transformer Support Capacitor busbar, carries out whole system stray inductance design parameter
Consider, meet the requirement of each several part stray inductance, and cancel absorbing circuit.
Further, in above method：According to device layout and structural requirement, the composite bus bar of individual module is designed, is gone forward side by side
Row simulation analysis and experiment, make the stray inductance of the composite bus bar of individual module meet the application demand of device；Then will be single
The composite bus bar of module assembles carry out associative simulation with current transformer Support Capacitor composite bus bar, according to simulation result, adjustment
Device layout so as to adjust the structure of composite bus bar, change the shape of composite bus bar output terminal, the shapes and sizes of faying surface with
And the connection mode of lead-out terminal, while making the stray inductance of the composite bus bar of individual module minimum, make main circuit system
Stray inductance is minimum.
The present invention also proposes a kind of locomotive unsteady flow work(of the design method based on above-mentioned optimization main circuit totality stray inductance
Rate unit：DC output end, direct-flow input end, the capacitance of inverter module composite bus bar of rectification+copped wave module composite bus bar are multiple
The output terminal terminal for closing busbar uses back-to-back connection mode；Capacitance composite bus bar connects rectification+copped wave module composite bus bar
Output, and the input of inverter module composite bus bar；Intermediate loop Support Capacitor is positioned close to power module dc bus
Terminals.
Further, it is arranged on above-mentioned rectification+copped wave module composite bus bar in rectification+chopped power module, the rectification+
Chopped power module includes the bridge arm of rectification circuit and the copped wave branch of chopper circuit, i.e. every group of bridge arm and all the way copped wave branch group
Into rectification+chopped power phase module.
The upper rectification circuit is made of the bridge arm of three groups of independences.Above-mentioned inverter circuit can by three independent three phase full bridges
Control inverted power module composes in parallel.
Above-mentioned chopper circuit is made of the copped wave branch of three tunnel independences.
The invention has the advantages that：
The design method and locomotive unsteady flow power cell of the optimization main circuit totality stray inductance of the present invention are to be directed to main electricity
Influence of the road stray inductance to switching device, proposes the optimum design method of main circuit stray inductance, and applies in diesel locomotive
In the designing and developing of unsteady flow power cell.The design can reduce the use of switching device absorbing circuit, ensure switching device
While reliability service, design cost is reduced, reduces the volume and weight of device, makes the design of locomotive converter system more
Optimization.
Further, the present invention is saved space, is easily installed maintenances using low sense composite bus bar technology, reduce maintenance into
This.
Further, present system, the main circuit stray inductance design of integration, ensure switching device reliability service.
Further, present invention eliminates IGBT absorption circuits, power cell cost is reduced, reduces volume and weight.
Brief description of the drawings
Fig. 1 is diesel locomotive alternating-current actuating system main circuit schematic diagram；
Fig. 2 is the main circuit topology figure of the present invention；
Fig. 3 is power cell schematic layout pattern of the present invention；
Fig. 4 is converter cabinet composite bus bar structure diagram of the present invention；
Fig. 5 is 1 structure diagram of rectification module composite bus bar of the present invention；
Fig. 6 is 2 structure diagram of inverter module composite bus bar of the present invention.
Wherein：1 is rectification+copped wave module composite bus bar；2 be inverter module composite bus bar；3 be capacitance composite bus bar；4 are
Capacitance.
Embodiment
Big-power transducer switching device is in switching process, due to from DC energy storage capacitance to IGBT device dc bus
On stray inductance and IGBT module own inductance influence, very high peak voltage can be produced, this peak voltage, can make device
Part overheats, or even makes IGBT out of control and damaged more than the load rated safety workspace of device.It is, therefore, necessary to it will be produced in switching process
Raw peak voltage is limited in allowed band, and one of method just uses stack bus bar technology, reduces DC loop power generatrix
Distributed inductance.
Find in the design, what stray inductance turned off power device influences not only by spuious inside single power module
Inductance effect, power module and Support Capacitor are connected to a part for main circuit, its stray inductance also can cause shadow to device
Ring.For several power modules after the completion of converter cabinet connection, the overall stray inductance of system is not the compound mother of several power modules
The simple superposition of stray inductance is arranged, different faying surfaces is designed has considerable influence to the stray inductance of system.
Therefore, present invention firstly provides a kind of design method for optimizing main circuit totality stray inductance, this method to be specially：
Main circuit connection uses composite bus bar, and in the design of power module and current transformer Support Capacitor busbar, carries out whole system
Stray inductance design parameter is considered, and meets the requirement of each several part stray inductance, and cancels absorbing circuit, so that further letter
Change apparatus structure, mitigate weight, reduce volume, reduce cost.
In the method for the invention：According to device layout and structural requirement, the composite bus bar of individual module is designed, and is carried out
Simulation analysis and experiment, make the stray inductance of the composite bus bar of individual module meet the application demand of device；Then by single mould
The composite bus bar of block assembles carry out associative simulation with current transformer Support Capacitor composite bus bar, according to simulation result, adjuster
Part layout so as to adjust the structure of composite bus bar, change the shape of composite bus bar output terminal, the shapes and sizes of faying surface and
The connection mode of lead-out terminal, while making the stray inductance of the composite bus bar of individual module minimum, makes the miscellaneous of main circuit system
It is minimum to dissipate inductance.
The present invention also proposes a kind of locomotive unsteady flow work(of the design method based on above-mentioned optimization main circuit totality stray inductance
Rate unit, as shown in Figure 4：DC output end, the inverter module of rectification+copped wave module composite bus bar 1 (structure is as shown in Figure 5) are multiple
Direct-flow input end, the output terminal terminal of capacitance composite bus bar 3 for closing busbar 2 (structure is as shown in Figure 6) use back-to-back connection
Mode；The output of the connection rectification+copped wave module composite bus bar 1 of capacitance composite bus bar 3, and inverter module composite bus bar 2 are defeated
Enter；Intermediate loop Support Capacitor is positioned close to power module dc bus terminals, facilitates capacitor bus-bar and power module
Connection, reduces the use of transition busbar, optimizes stray inductance.
It is arranged on rectification+copped wave module composite bus bar 1 of the present invention in rectification+chopped power module, rectification+copped wave work(
Rate module includes the bridge arm of rectification circuit and the copped wave branch of chopper circuit, i.e. every group of bridge arm and all the way rectification of copped wave branch composition
+ chopped power module.
As shown in Figures 2 and 3, locomotive unsteady flow power cell of the present invention further includes rectification circuit, chopper circuit and inversion electricity
Road；Rectification circuit is in parallel by three groups of bridge arms, forms a complete rectified three-phase circuit；Chopper circuit includes three and independent cuts
Ripple branch, every copped wave branch route single tube and copped wave resistance concatenation form.One group of rectifying bridge arm and all the way copped wave branch composition one
A traction rectifier and copped wave phase module, after three phase module parallel connections, then be connected across intermediate DC link dc bus it is positive and negative
Both ends；Intermediate DC link is connected to inverter circuit；Inverter circuit is composed in parallel by three inverted power modules.Rectification circuit,
Chopper circuit and inverter circuit are arranged in the cabinet of diesel locomotive converter cabinet, and three are provided with cabinet and is used independently of each other
With the air passage of heat dissipation, a traction rectifier and copped wave phase module and an inverted power module are provided with each independent ventiduct.
Inverted power module is three-phase inversion power cell.Three-phase inversion power cell is connected with motor.
Whole converter cabinet includes three rectifications and copped wave phase power module and three three-phase inversion power cells.It is so whole
Converter cabinet only includes two kinds of module, and the system type of design is conducive to the exchange of power cell, and convenient installation is safeguarded.
Three mutually independent air channel structure layouts are identical, and the heat sink part of module is placed in three air passages, module
Miscellaneous part is isolated in the front portion in air passage, and air passage by sealing strip.This uniform layout type is conducive to power module
Design selection and heat dissipation design.
The present invention each power cell further included radiator, switching device, driving plate, adaptation board, it is low sense composite bus bar,
The components such as combined screen shield plate, according to system command, complete the functions such as IGBT switch change-overs, driving and protection, heat dissipation, and final reality
Now the three-phase alternating current of input is driven traction electric machine, complete locomotive traction function by handing over orthogonal change.
Claims (7)
- A kind of 1. design method for optimizing main circuit totality stray inductance, it is characterised in that main circuit connection uses composite bus bar, And in the design of power module and current transformer Support Capacitor busbar, considering for whole system stray inductance design parameter is carried out, Meet the requirement of each several part stray inductance, and cancel absorbing circuit.
- 2. the design method of optimization main circuit totality stray inductance according to claim 1, it is characterised in that according to device Layout and structural requirement, design the composite bus bar of individual module, and carry out simulation analysis and experiment, make the compound mother of individual module The stray inductance of row meets the application demand of device；Then by the composite bus bar of individual module and the compound mother of current transformer Support Capacitor Row assembles carry out associative simulation, and according to simulation result, adjusting device layout is so as to adjust the structure of composite bus bar, change again The connection mode of the shape of busbar output terminal, the shapes and sizes of faying surface and lead-out terminal is closed, makes the compound of individual module While the stray inductance of busbar is minimum, make the stray inductance of main circuit system minimum.
- A kind of 3. locomotive unsteady flow power list based on the design method for optimizing main circuit totality stray inductance described in claim 2 Member, it is characterised in that DC output end, the direct current of inverter module composite bus bar (2) of rectification+copped wave module composite bus bar (1) Input terminal, the output terminal terminal of capacitance composite bus bar (3) use back-to-back connection mode；Capacitance composite bus bar (3) connection is whole The output of stream+copped wave module composite bus bar (1), and the input of inverter module composite bus bar (2)；Intermediate loop Support Capacitor is set Put close to power module dc bus terminals.
- 4. locomotive unsteady flow power cell according to claim 3, it is characterised in that the rectification+compound mother of copped wave module It is arranged on row (1) in rectification+chopped power module, the rectification+chopped power module includes the bridge arm of rectification circuit and cuts The copped wave branch of wave circuit, i.e. every group of bridge arm and all the way copped wave branch composition rectification+chopped power phase module.
- 5. locomotive unsteady flow power cell according to claim 4, it is characterised in that the rectification circuit is by three groups of independence Bridge arm forms.
- 6. locomotive unsteady flow power cell according to claim 4, it is characterised in that the inverter circuit is independent by three The controllable inverted power module of three phase full bridge composes in parallel.
- 7. locomotive unsteady flow power cell according to claim 4, it is characterised in that the chopper circuit is by three tunnel independences Copped wave branch forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711388371.1A CN107911033B (en) | 2017-12-20 | 2017-12-20 | Design method for optimizing total stray inductance of main circuit and locomotive variable-current power unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711388371.1A CN107911033B (en) | 2017-12-20 | 2017-12-20 | Design method for optimizing total stray inductance of main circuit and locomotive variable-current power unit |
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| CN107911033A true CN107911033A (en) | 2018-04-13 |
| CN107911033B CN107911033B (en) | 2024-03-26 |
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Cited By (2)
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| CN110797852A (en) * | 2019-10-12 | 2020-02-14 | 中车永济电机有限公司 | High-pressure protection system for diesel locomotive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797852A (en) * | 2019-10-12 | 2020-02-14 | 中车永济电机有限公司 | High-pressure protection system for diesel locomotive |
| CN113014118A (en) * | 2021-04-21 | 2021-06-22 | 株洲中车时代电气股份有限公司 | Current transformer |
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| CN107911033B (en) | 2024-03-26 |
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