CN109367398A - DC auxiliary power system - Google Patents
DC auxiliary power system Download PDFInfo
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- CN109367398A CN109367398A CN201811345495.6A CN201811345495A CN109367398A CN 109367398 A CN109367398 A CN 109367398A CN 201811345495 A CN201811345495 A CN 201811345495A CN 109367398 A CN109367398 A CN 109367398A
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- auxiliary power
- high voltage
- direct current
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- 238000004146 energy storage Methods 0.000 claims description 30
- 238000002955 isolation Methods 0.000 claims description 10
- 230000009466 transformation Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000011017 operating method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
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- 230000010349 pulsation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/02—Electric propulsion with power supply external to the vehicle using dc motors
- B60L9/04—Electric propulsion with power supply external to the vehicle using dc motors fed from dc supply lines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
Abstract
The application provides a kind of DC auxiliary power system, it include: high voltage dc bus, middle pressure DC bus and the low-voltage direct bus of setting on the rail vehicle, the direct current AuCT being connected between high voltage dc bus and middle pressure DC bus, the DC charging motor being connected between middle pressure DC bus and low-voltage direct bus；High voltage dc bus is connected to contact net or third rail, which is the traction electric machine power supply of rail vehicle, and is that middle pressure is DC bus powered through direct current AuCT；Middle pressure DC bus is each middle pressure load supplying on rail vehicle, and is low-voltage direct bussed supply through DC charging motor, and middle pressure load includes convertible frequency air-conditioner；Low-voltage direct bus is the battery and load supplying of the 110V grade of rail vehicle.The application can effectively reduce the link of transformation of electrical energy, reduce electric energy loss and improve the operational efficiency of auxiliary system, can reduce the operating cost of entire auxiliary system and improve its energy-saving effect.
Description
Technical field
This application involves technical field of rail traffic, and in particular to a kind of DC auxiliary power system.
Background technique
Traction-auxiliary system is the important mobile unit of rail vehicle, and trailer system therein is using traction convertor as core
Center device, for providing traction power for whole train；And auxiliary system is then using AuCT as core, for being train
The threephase loads such as whole-vehicle air-conditioner, air compressor, cooling blower and part single-phase load provide AC power source.
The auxiliary system of existing rail vehicle generallys use Industrial Frequency Transformer isolation method, in DC inverter at three-phase
After alternating current, three-phase alternating current is converted to three phase worker power by Industrial Frequency Transformer and exports.Since Industrial Frequency Transformer is unfavorable for subtracting
DC inverter is first single-phase mid-frequency alternating current, through intermediate-frequency transformer by weight, the rear AuCT for developing intermediate frequency topology again
Rectification obtains low-voltage direct after isolation transformation, then exports three phase worker power by three-phase inverter.Referring to Fig. 1, aforementioned two kinds auxiliary
It is load supplying that auxiliary system, which mostly uses the mode of AC output parallel connection, and AC load mainly has air-conditioning, charger, cooling blower etc.
Equipment.
However, any auxiliary system either in the prior art, because charger mostly uses uncontrollable rectifier mode will
380V exchange is whole to carry out dc/dc transformation for direct current again, and on the one hand more level-one rectified power conversions increase loss, another aspect
Uncontrollable rectifier brings harmonic pollution to 380V ac bus, in addition, since current track vehicle is solemn using convertible frequency air-conditioner technology
It so has become a kind of trend, however considers cost factor, convertible frequency air-conditioner front end generallys use uncontrollable rectifier, therefore, and above-mentioned
Charger is the same, equally exists inefficiency and harmonic pollution problems, limits convertible frequency air-conditioner in the popularization and application of rail vehicle.
So that room for promotion of the structure of current auxiliary system when facing energy-efficient urgent need is limited, and in flexibility
Also it has too many difficulties to cope with.
Summary of the invention
For the problems of the prior art, the application provides a kind of DC auxiliary power system, can effectively reduce electric energy
The link of transformation reduces electric energy loss and improves the operational efficiency of auxiliary system, and then can reduce the fortune of entire auxiliary system
Row cost simultaneously improves its energy-saving effect.
In order to solve the above technical problems, the application the following technical schemes are provided:
The application provides a kind of DC auxiliary power system, comprising:
High voltage dc bus, middle pressure DC bus and low-voltage direct bus on the rail vehicle is set, is connected to described
Direct current AuCT between high voltage dc bus and middle pressure DC bus, is connected to medium pressure DC bus and low-pressure direct
Flow the DC charging motor between bus, wherein the voltage class of the high voltage dc bus is 750V or more, medium pressure direct current
The voltage class of bus is 600V between 700V, and the voltage class of the low-voltage direct bus is 110V；
The high voltage dc bus is connected to contact net or third rail, and the high voltage dc bus is used to be the railcar
Traction electric machine power supply, and through the direct current AuCT be medium pressure it is DC bus powered；
Medium pressure DC bus is used to be each middle pressure load supplying on the rail vehicle, and through the DC charging
Machine is the low-voltage direct bussed supply, wherein medium pressure load includes convertible frequency air-conditioner；
The low-voltage direct bus is used for the battery of the 110V grade for the rail vehicle and the load of 110V grade
Power supply.
Further, further includes: the traction invertor being connected on the high voltage dc bus；
The high voltage dc bus is traction invertor power supply；
The traction invertor exports three-phase alternating current, powers for the traction electric machine.
Further, further includes: be connected on the high voltage dc bus and auxiliary for being carried out for the high voltage dc bus
Help the high-voltage energy storage device of power supply.
Further, further includes: at least one high-voltage direct current switch device；
The high-voltage direct current switch device is arranged on the high voltage dc bus, for dividing the high voltage dc bus
Section, and failure sorted isolation is carried out to the high voltage dc bus in the event of a failure.
Further, further includes: be connected on medium pressure DC bus and auxiliary for being carried out for pressure DC bus in this
Help the middle pressure energy storage device of power supply；
If the direct current AuCT has the function of that and fro flow of power, medium pressure energy storage device are also used for as institute
It states high voltage dc bus and auxiliary power supply is provided.
Further, further includes: DC switchgear is pressed at least one；
Medium pressure DC switchgear is arranged on medium pressure DC bus, for dividing medium pressure DC bus
Section, and failure sorted isolation is carried out to medium pressure DC bus in the event of a failure.
Further, further includes: the filter apparatus being connected on the high voltage dc bus, and, with the filter apparatus
The high-voltage switch gear case of connection；
The high-voltage switch gear case is connected to the contact net or third rail.
Further, the direct current AuCT includes input circuit and isolated form DC/DC converter interconnected；
The input circuit is connected to the high voltage dc bus；
The isolated form DC/DC converter is connected to medium pressure DC bus.
Further, the direct current AuCT has multiple, and parallel connection is set between each direct current AuCT
It sets.
Further, the direct current AuCT and DC charging motor be integrated or scattering device.
As shown from the above technical solution, the application provides a kind of DC auxiliary power system, including is arranged in rail vehicle
On high voltage dc bus, middle pressure DC bus and low-voltage direct bus, be connected to the high voltage dc bus and middle straightening stream
Direct current AuCT between bus, the DC charging being connected between medium pressure DC bus and low-voltage direct bus
Machine, wherein the voltage class of the high voltage dc bus is 750V or more, and the voltage class of medium pressure DC bus is 600V
To between 700V, the voltage class of the low-voltage direct bus is 110V；The high voltage dc bus is connected to contact net or
Three rails, and the high voltage dc bus is used to power for the traction electric machine of the rail vehicle, and through the direct current AuCT
It is DC bus powered for medium pressure；Medium pressure DC bus is used to be each middle pressure load supplying on the rail vehicle,
And through the DC charging motor be the low-voltage direct bussed supply, wherein medium pressure load include convertible frequency air-conditioner；It is described low
Pressing DC bus to be used for is the battery of the 110V grade of the rail vehicle and the load supplying of 110V grade.Pass through frequency conversion sky
Setting of the reconciliation DC charging motor in the DC auxiliary power system can save the rectification in tradition access AC system
Link can effectively avoid uncontrollable rectifier load from leading to a series of problems caused by alternating voltage distortion, simplify entire auxiliary
Auxiliary system simultaneously avoids harmonic pollution, can effectively reduce the link of transformation of electrical energy, reduce electric energy loss and improve auxiliary system
Operational efficiency, and then can reduce the operating cost of entire auxiliary system and improve its energy-saving effect, also achieve auxiliary system
The light-weight design of system, convenient for the access of vehicle-mounted energy storage device, it is easier to realize the specific functions such as emergency traction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram that the auxiliary system of existing rail vehicle is illustrated.
Fig. 2 is the high voltage dc bus of DC auxiliary power system in the embodiment of the present application, middle pressure DC bus and low
Press the structural schematic diagram between DC bus.
Fig. 3 is the structural schematic diagram of the DC auxiliary power system of the application.
Fig. 4 is between DC auxiliary power system and rail vehicle in the DC auxiliary power system embodiment of the application
Structural relation schematic diagram.
Fig. 5 is the structural schematic diagram of the traction invertor in the DC auxiliary power system embodiment of the application.
Fig. 6 is the structural schematic diagram of the high-voltage energy storage device in the DC auxiliary power system embodiment of the application.
Fig. 7 is the structural schematic diagram of the high-voltage direct current switch device in the DC auxiliary power system embodiment of the application.
Fig. 8 is the structural schematic diagram of the middle pressure energy storage device in the DC auxiliary power system embodiment of the application.
Fig. 9 is the structural schematic diagram of the middle pressure DC switchgear in the DC auxiliary power system embodiment of the application.
Figure 10 is that the structure of the filter apparatus and high-voltage switch gear case in the DC auxiliary power system embodiment of the application is shown
It is intended to.
Figure 11 is the structural schematic diagram of the direct current AuCT in the DC auxiliary power system embodiment of the application.
Figure 12 is the knot of multiple direct current AuCTs in parallel in the DC auxiliary power system embodiment of the application
Structure schematic diagram.
Figure 13 is that the structure of multiple DC charging motors in parallel in the DC auxiliary power system embodiment of the application is shown
It is intended to.
Figure 14 is the structural schematic diagram of the DC auxiliary power system application example of the application.
Wherein, 1- high voltage dc bus；11- contact net or third rail；12- traction invertor；13- high-voltage direct current switch dress
It sets；14- high-voltage energy storage device；15- filter apparatus；16- high-voltage switch gear case；DC bus is pressed in 2-；21- direct current auxiliary converter
Device；211- input circuit；212- isolated form DC/DC converter；DC switchgear is pressed in 22-；23- convertible frequency air-conditioner；24- is cooling
Blower；25- air compressor；26- frequency converter-blower integration apparatus；Energy storage device is pressed in 27-；3- low-voltage direct bus；
31- DC charging motor；The load of 32-110V grade；The battery of 33-110V grade；4- rail vehicle；41- traction electric machine；
Load is pressed in 42-；5- DC auxiliary power system.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The problem of inefficiency present in auxiliary system in view of existing rail vehicle and harmonic pollution, the application
Embodiment provides a kind of operation effect that can be effectively reduced the link of transformation of electrical energy, reduce electric energy loss and improve auxiliary system
Rate, and then can reduce the operating cost of entire auxiliary system and improve the DC auxiliary power system of its energy-saving effect, this is straight
It flows auxiliary power supply system to be arranged in rail vehicle, using middle pressure DC bus as core, instead of traditional exchange auxiliary power supply
System, referring to fig. 2, middle pressure DC bus 2 and high voltage dc bus 1 and low-voltage direct bus 3 are formd through entire train
Three-level direct current system, and DC auxiliary power system 5 also includes to be connected to the high voltage dc bus 1 and middle pressure DC bus
Direct current AuCT 21 between 2, the DC charging being connected between medium pressure DC bus 2 and low-voltage direct bus 3
Machine 31 can save the rectification link in tradition access AC system, uncontrollable rectifier load can effectively be avoided to lead to alternating current
The caused a series of problems of pressure distortion, simplifies entire auxiliary system and avoids harmonic pollution, can effectively reduce electric energy
The link of transformation reduces electric energy loss and improves the operational efficiency of auxiliary system, and then can reduce the fortune of entire auxiliary system
Row cost simultaneously improves its energy-saving effect.
It is understood that the rail vehicle refer to a kind of traffic travelled in certain tracks in rail traffic or
Haulage vehicle, rail traffic therein are broken generally into state-owned railroads system, inter-city rail transit and urban track traffic three categories.
In a kind of citing, the rail vehicle can be train, and train is general fast train, rapid and bullet train etc..
In one or more embodiments of the application, the high voltage dc bus, middle pressure DC bus and low-voltage direct
The voltage class of bus is successively decreased, wherein the high voltage dc bus refers to that voltage class is 750V or more, for example, described
High voltage dc bus can refer to that voltage class is the DC bus of 1500V or 750V, and the low-voltage direct bus refers to voltage etc.
Grade is the DC bus of 110V, and the voltage class of medium pressure DC bus is 600V to 700V.
Based on foregoing description, in order to effectively reduce the link of transformation of electrical energy, reducing electric energy loss and improve auxiliary system
Operational efficiency, embodiments herein provide a kind of specific embodiment of DC auxiliary power system, described straight referring to Fig. 3
Stream auxiliary power supply system specifically includes following content:
High voltage dc bus 1, middle pressure DC bus 2 and low-voltage direct bus 3 on rail vehicle 4 are set, are connected to
Direct current AuCT 21 between the high voltage dc bus 1 and middle pressure DC bus 2, is connected to medium pressure DC bus
DC charging motor 31 between 2 and low-voltage direct bus 3, wherein the high voltage dc bus 1, middle pressure DC bus 2 and low pressure
The voltage class of DC bus 3 is successively decreased, and the voltage class of the high voltage dc bus 1 is 750V or more, medium pressure direct current
The voltage class of bus 2 is 600V between 700V, and the voltage class of the low-voltage direct bus 3 is 110V；The high straightening
Stream bus 1 is connected to contact net or third rail 11, and the high voltage dc bus 1 is used for the traction electric machine for the rail vehicle 4
Power supply, and be the power supply of medium pressure DC bus 2 through the direct current AuCT 21；Medium pressure DC bus 2 is for being
Each middle 42 power supply of pressure load on the rail vehicle 4, and be the low-voltage direct bus 3 confession through the DC charging motor 31
Electricity, wherein medium pressure load 42 includes convertible frequency air-conditioner 23；The low-voltage direct bus 3 is used for as the rail vehicle 4
The battery 33 of 110V grade and the load 32 of 110V grade are powered.
It is understood that referring to fig. 4, the DC auxiliary power system 5 is arranged in the rail vehicle 4, described
High voltage dc bus 1, middle pressure DC bus 2 and low-voltage direct bus 3 are arranged in the rail vehicle 4 and through entire rail
Road vehicle 4, the direct current AuCT 21 access high voltage dc bus 1, are that middle pressure DC bus 2 is powered after being depressured.
The DC charging motor 31 accesses medium pressure DC bus 2, is low-voltage direct bus after medium pressure DC bus 2 is depressured
3 power supplies.It can also be specifically divided into each medium pressure load 42 in addition to the convertible frequency air-conditioner 23 on the rail vehicle 4
Each threephase load and part single-phase load.
Wherein, the auxiliary of power one way flow can be used according to 4 demand of rail vehicle in the direct current AuCT 21
Current transformer, can also be using the AuCT of power twocouese flowing.The direct current AuCT 21 has Sofe Switch function
Can, it can be LLC resonant type soft-switch, can also be phase-shifting full-bridge topology or other soft switch topologies.
The low-voltage direct bus 3 refers to the bus of 110V grade, is mainly used for the control electricity of all devices on train
With access 110V battery.
As can be seen from the above description, DC auxiliary power system 5 provided by the embodiments of the present application, by convertible frequency air-conditioner 23 and directly
Setting of the current charge machine 31 in the DC auxiliary power system 5 can save the rectification in tradition access AC system
Link can effectively avoid uncontrollable rectifier load from leading to a series of problems caused by alternating voltage distortion, simplify entire auxiliary
Auxiliary system simultaneously avoids harmonic pollution, can effectively reduce the link of transformation of electrical energy, reduce electric energy loss and improve auxiliary system
Operational efficiency, and then can reduce the operating cost of entire auxiliary system and improve its energy-saving effect, also achieve auxiliary system
The light-weight design of system, convenient for the access of vehicle-mounted energy storage device, it is easier to realize the specific functions such as emergency traction.
Further to make the high voltage dc bus be that the traction electric machine of the rail vehicle is reliably powered,
It also include traction invertor 12 in the DC auxiliary power system in a kind of specific embodiment of the application, referring to
Fig. 5, the traction invertor 12 are connected on the high voltage dc bus 1, and the high voltage dc bus 1 is the traction inversion
Device 12 is powered；The traction invertor 12 exports three-phase alternating current, powers for the traction electric machine 41.
It is understood that high voltage dc bus 1 is mainly used for traction power.Its energy source is in contact net or third rail
11 power supplies, traction invertor 12 and direct current AuCT 21 access high voltage dc bus 1 as high-voltage load device.
In a kind of citing, the traction invertor 12 is including at least there are three types of control models, respectively vehicle control mode, frame
Control mode or axis control mode.The traction invertor 12 is used to the direct current energy of high voltage dc bus 1 being transformed into alternating current, is
Traction electric machine 41 is powered, and the traction invertor 12 can be made of inverter bridge, control logic and filter circuit.
For the power supply reliability for further improving the high voltage dc bus, in a kind of specific embodiment of the application
In, it also include high-voltage energy storage device 14 in the DC auxiliary power system, referring to Fig. 6, the high-voltage energy storage device 14 connects
It connects on the high voltage dc bus 1 and for carrying out auxiliary power supply for the high voltage dc bus 1.
It is understood that the high-voltage energy storage device 14 can be power battery device and super-capacitor device, in institute
When stating the access high voltage dc bus 1 of high-voltage energy storage device 14, auxiliary power supply can be carried out for high voltage dc bus 1, to realize
Train traction.
For the safety in operation and reliability for further improving the DC auxiliary power system, it is auxiliary to improve the direct current
The failure Ability of emergency management for helping power supply system, in a kind of specific embodiment of the application, direct current auxiliary power supply system
It also include at least one high-voltage direct current switch device 13 in system, referring to Fig. 7, the high-voltage direct current switch device 13 is arranged in institute
It states on high voltage dc bus 1, it is female to the high voltage direct current for the high voltage dc bus 1 to be segmented, and in the event of a failure
Line 1 carries out failure sorted isolation.
It is understood that it is several sections that the high-voltage direct current switch device 13, which as needed divides high voltage dc bus 1, institute
Stating high-voltage direct current switch device 13 can be the break-up device for having arc extinguishing ability, such as: contactor, breaker, electronic power switch
Or other devices, it can also be the disconnecting switch or other break-up devices of no arc extinguishing ability.
For the power supply reliability for further improving medium pressure DC bus, in a kind of specific embodiment of the application
In, it also include middle pressure energy storage device 27 in the DC auxiliary power system, referring to Fig. 8, medium pressure energy storage device 27 connects
It connects on medium pressure DC bus 2 and for carrying out auxiliary power supply for pressure DC bus 2 in this, if the direct current auxiliary converter
Device 21 has the function of to and fro flow of power, then medium pressure energy storage device 27 is also used for providing for the high voltage dc bus 1 auxiliary
Help power supply.
It is understood that medium pressure DC bus 2 is mainly used for supplying for each middle pressure load 42 of rail vehicle 4
Electricity, the energy source of medium pressure DC bus 2 is in the direct current AuCT 21, wherein the rail vehicle 4 it is each
In middle pressure load 42 in addition to convertible frequency air-conditioner 23, also including at least has the equipment such as cooling blower 24 and air compressor 25, i.e., described
Middle pressure DC bus 2 is that convertible frequency air-conditioner 23, cooling blower 24, air compressor 25 and middle pressure energy storage device 27 are powered, it is described in
Pressure energy storage device 27 stores electric energy, the auxiliary power supply source as medium pressure DC bus 2.
It is understood that medium pressure energy storage device 27 is as with the high-voltage energy storage device 14, or power
Cell apparatus and super-capacitor device can be middle straightening stream when pressing DC bus 2 in the access of medium pressure energy storage device 27
Bus 2 carries out auxiliary power supply, if the direct current AuCT 21 has the function of to and fro flow of power, medium pressure energy storage dress
It sets 27 to be also used for providing auxiliary power supply for the high voltage dc bus 1, to realize train traction.
For the safety in operation and reliability for further improving the DC auxiliary power system, it is auxiliary to improve the direct current
The failure Ability of emergency management for helping power supply system, in a kind of specific embodiment of the application, direct current auxiliary power supply system
It also include pressure DC switchgear 22 at least one in system, referring to Fig. 9, medium pressure DC switchgear 22 is arranged in institute
It states on pressure DC bus 2, it is female to medium pressure direct current for medium pressure DC bus 2 to be segmented, and in the event of a failure
Line 2 carries out failure sorted isolation.
It is understood that it is several sections that medium pressure DC switchgear 22, which as needed divides middle pressure DC bus 2, institute
Stating middle pressure DC switchgear 22 can be the break-up device for having arc extinguishing ability, such as: contactor, breaker, electronic power switch
Or other devices, it can also be the disconnecting switch or other break-up devices of no arc extinguishing ability.
To further improve the reliability and power quality that the DC auxiliary power system obtains electric energy, in the application
A kind of specific embodiment in, also comprising being connected on the high voltage dc bus 1 in the DC auxiliary power system
Filter apparatus 15, and, the high-voltage switch gear case 16 connecting with the filter apparatus 15, referring to Figure 10, the high-voltage switch gear case 16 connects
It is connected to the contact net or third rail 11.
It is mounted on beside city rail (subway, light rail etc.) route it is understood that the third rail refers to, individually
For a track powering.Itself and pantagraph current collector auxiliary work provide electric power support for all above load of rail vehicle 4.
The contact net is the main truss of railway electrification project, is the special form powered to electric locomotive that downline overhead is set up
The transmission line of electricity of formula.It is made of contact suspension, support device, positioning device, several parts of pillar and basis.
To further improve the DC bus powered reliability of medium pressure, in a kind of specific embodiment of the application
In, the direct current AuCT 21 in the DC auxiliary power system include input circuit 211 interconnected and every
Release DC/DC converter 212, referring to Figure 11, the input circuit 211 is connected to the high voltage dc bus 1；The isolated form
DC/DC converter 212 is connected to medium pressure DC bus 2.
It is understood that the direct current AuCT 21 has prime input circuit 211, contact net can be effectively adapted to
Or third rail 11 power when occur network pressure wide variation situation when bad working environments.
For the operational reliability for further improving the DC auxiliary power system, in a kind of specific implementation of the application
In mode, the direct current AuCT 21 in the DC auxiliary power system have it is multiple, referring to Figure 12, and each described
It is arranged in parallel between direct current AuCT 21, it is to be understood that direct current AuCT 21 has parallel operation ability, both
It can be flowed with auto parallel Connection, energy scheduling can also be carried out according to Train Control demand.
In addition, the DC charging motor 31 in the DC auxiliary power system can also have it is multiple, referring to Figure 13, and
It is arranged in parallel between each DC charging motor 31, it is to be understood that DC charging motor 31 has parallel operation ability, both
It can be flowed with auto parallel Connection, energy scheduling can also be carried out according to Train Control demand.
For the lightweight performance for further improving the DC auxiliary power system, in a kind of specific implementation of the application
In mode, the direct current AuCT 21 and DC charging motor 31 are integrally disposed, can also be with scattering device.It is understood that
It is that the DC charging motor 31 and direct current AuCT 21 can be integrated in a cabinet, it can also be individually at case.In addition, described
The equipment such as cooling blower 24 and air compressor 25 in rail vehicle 4 can be integrally disposed, composition frequency converter-blower one
Change equipment 26.Other AC loads can be female by straightening stream in another converter-motor integration equipment design access
Line 2.
To further explain this programme, the application also provides a kind of specific application example of DC auxiliary power system,
Referring to Figure 14, the DC auxiliary power system specifically includes following content:
1, train obtains 1500V or 750V DC voltage by contact net or the power supply of third rail 11, through high-voltage switch gear case 16
High voltage dc bus 1 is accessed with filter apparatus 15.
2, high voltage dc bus 1 runs through entire train, is that direct current AuCT 21 and traction invertor 12 are powered.High pressure
DC switchgear 13 has arc extinguishing ability, and high voltage dc bus 1 is segmented, and failure sorted isolation can be carried out in failure, protects
Demonstrate,proving failure influences to minimize.
3, direct current AuCT 21 accesses high voltage dc bus 1, is that middle pressure DC bus 2 is powered after being depressured.Institute
Stating direct current AuCT 21 includes input circuit 211 interconnected and isolated form DC/DC converter 212；The input electricity
Road 211 is connected to the high voltage dc bus 1；The isolated form DC/DC converter 212 is connected to medium pressure DC bus 2.
Direct current AuCT 21 has parallel operation ability, both can be flowed with auto parallel Connection, can also according to Train Control demand into
The scheduling of row energy.
4, direct current AuCT 21 both can be with power one-way flow, can also be with to and fro flow of power.
5, traction invertor 12 exports three-phase alternating current, powers for traction electric machine 41.Traction invertor 12 can be vehicle control
Mode, frame control mode or axis control mode.
6, high-voltage energy storage device 14 accesses high voltage dc bus 1, can be used as the back-up power source of high voltage dc bus 1.
7, middle pressure DC bus 2 runs through entire train, is DC charging motor 31, convertible frequency air-conditioner 23, frequency converter-blower one
Change equipment 26 and the power supply of middle pressure energy storage device 27.
8, middle pressure energy storage device 27 can power for middle pressure DC bus 2.If direct current AuCT 21 has power bi-directional
Function is flowed, middle pressure energy storage device 27 can power for high voltage dc bus 1.
9, DC charging motor 31 and convertible frequency air-conditioner 23 are directly accessed middle pressure DC bus 2, eliminate uncontrollable rectifier link, letter
Change system, improved efficiency, reduces harmonic pollution.
10, middle pressure DC switchgear 22 has arc extinguishing ability, and middle pressure DC bus 2 is segmented, can be carried out in failure
Failure sorted isolation guarantees that failure influences to minimize.
11, DC bus 2 is pressed in the access of DC charging motor 31, powered after being depressured for low-voltage direct bus 3.
12, low-voltage direct bus 3 runs through entire train, is battery 33 and the load 32 of 110V grade of 110V grade
(the control electricity of such as all devices) power supply.
As can be seen from the above description, the DC auxiliary power system 5 that the application application example provides, DC auxiliary power system
5 application as direct current system in railway transportation equipment field has significant performance advantage, also represents future development side
To, therefore, the application application example provide DC auxiliary power system 5 have it is following the utility model has the advantages that
1) more efficient: to reduce the link of transformation of electrical energy, reduce electric energy loss and operating cost.DC load ratio is higher,
Energy-saving effect is more obvious；
2) more excellent power quality: having evaded uncontrollable rectifier load leads to a series of problems caused by alternating voltage distortion,
It include reducing system effectiveness, introducing harmonic loss and torque pulsation for other AC loads.DC power-supply system is easier to mention
For higher power supply quality；
3) system lightweight:
(3-1) DC power-supply system reduces the capacity requirement of equipment by raising efficiency.
(3-2) can usually be realized using the direct current AuCT 21 of high frequency technique than the exchange AuCT of power frequency
Significant lightweight.
(3-3) direct current transportation is easier to realize power transmission and distribution link loss of weight；
4) the problems such as there is no the idle transmission of AC system, frequency stability；
5) it is convenient for the access of vehicle-mounted energy storage device, it is easier to realize the specific functions such as emergency traction.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for hardware+
For program class embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to side
The part of method embodiment illustrates.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
Although this application provides the method operating procedure as described in embodiment or flow chart, based on conventional or noninvasive
The labour for the property made may include more or less operating procedure.The step of enumerating in embodiment sequence is only numerous steps
One of execution sequence mode, does not represent and unique executes sequence.It, can when device or client production in practice executes
To execute or parallel execute (such as at parallel processor or multithreading according to embodiment or method shown in the drawings sequence
The environment of reason).
Although this specification embodiment provides the method operating procedure as described in embodiment or flow chart, based on conventional
It may include either more or less operating procedure without creative means.The step of being enumerated in embodiment sequence be only
One of numerous step execution sequence mode does not represent and unique executes sequence.Device or end product in practice is held
When row, can be executed according to embodiment or method shown in the drawings sequence or it is parallel execute (such as parallel processor or
The environment of multiple threads, even distributed data processing environment).The terms "include", "comprise" or its any other change
Body is intended to non-exclusive inclusion, so that process, method, product or equipment including a series of elements are not only wrapped
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, product
Or the element that equipment is intrinsic.In the absence of more restrictions, being not precluded is including process, the side of the element
There is also other identical or equivalent elements in method, product or equipment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments., retouching in this specification
In stating, the description of reference term " one embodiment ", " some embodiments ", " example ", " specific example " or " some examples " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained in this specification embodiment
In at least one embodiment or example.In the present specification, schematic expression of the above terms are necessarily directed to identical
Embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiments
Or it can be combined in any suitable manner in example.In addition, without conflicting with each other, those skilled in the art can say this
The feature of different embodiments or examples described in bright book and different embodiments or examples is combined.
The foregoing is merely the embodiments of this specification embodiment, are not limited to this specification embodiment.It is right
For those skilled in the art, this specification embodiment can have various modifications and variations.It is all in this specification embodiment
Any modification, equivalent replacement, improvement and so within spirit and principle, the right that should be included in this specification embodiment are wanted
Within the scope of asking.
Claims (10)
1. a kind of DC auxiliary power system characterized by comprising
High voltage dc bus, middle pressure DC bus and low-voltage direct bus on the rail vehicle is set, the high pressure is connected to
Direct current AuCT between DC bus and middle pressure DC bus, is connected to medium pressure DC bus and low-voltage direct is female
DC charging motor between line, wherein the voltage class of the high voltage dc bus is 750V or more, medium pressure DC bus
Voltage class be 600V between 700V, the voltage class of the low-voltage direct bus is 110V；
The high voltage dc bus is connected to contact net or third rail, and the high voltage dc bus is used for as the rail vehicle
Traction electric machine power supply, and be that medium pressure is DC bus powered through the direct current AuCT；
Medium pressure DC bus is used to be each middle pressure load supplying on the rail vehicle, and is through the DC charging motor
The low-voltage direct bussed supply, wherein medium pressure load includes convertible frequency air-conditioner；
The low-voltage direct bus is used for the battery of the 110V grade for the rail vehicle and the load supplying of 110V grade.
2. DC auxiliary power system according to claim 1, which is characterized in that further include: it is connected to the high straightening
Flow the traction invertor on bus；
The high voltage dc bus is traction invertor power supply；
The traction invertor exports three-phase alternating current, powers for the traction electric machine.
3. DC auxiliary power system according to claim 1, which is characterized in that further include: it is connected to the high straightening
Flow the high-voltage energy storage device on bus and for carrying out auxiliary power supply for the high voltage dc bus.
4. DC auxiliary power system according to claim 1, which is characterized in that further include: at least one high voltage direct current
Switching device；
The high-voltage direct current switch device is arranged on the high voltage dc bus, for the high voltage dc bus to be segmented,
And failure sorted isolation is carried out to the high voltage dc bus in the event of a failure.
5. DC auxiliary power system according to claim 1, which is characterized in that further include: it is straight to be connected to medium pressure
Flow the middle pressure energy storage device on bus and for carrying out auxiliary power supply for pressure DC bus in this；
If the direct current AuCT has the function of that and fro flow of power, medium pressure energy storage device are also used for as the height
DC bus is pressed to provide auxiliary power supply.
6. DC auxiliary power system according to claim 1, which is characterized in that further include: straightening stream at least one
Switching device；
Medium pressure DC switchgear is arranged on medium pressure DC bus, for medium pressure DC bus to be segmented,
And failure sorted isolation is carried out to medium pressure DC bus in the event of a failure.
7. DC auxiliary power system according to claim 1, which is characterized in that further include: it is connected to the high straightening
The filter apparatus on bus is flowed, and, the high-voltage switch gear case being connect with the filter apparatus；
The high-voltage switch gear case is connected to the contact net or third rail.
8. DC auxiliary power system according to claim 1, which is characterized in that the direct current AuCT includes phase
The input circuit and isolated form DC/DC converter to connect；
The input circuit is connected to the high voltage dc bus；
The isolated form DC/DC converter is connected to medium pressure DC bus.
9. DC auxiliary power system according to claim 1, which is characterized in that the direct current AuCT has more
It is a, and be arranged in parallel between each direct current AuCT.
10. DC auxiliary power system according to claim 1, which is characterized in that the direct current AuCT and straight
Current charge machine integrates or scattering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345495.6A CN109367398A (en) | 2018-11-13 | 2018-11-13 | DC auxiliary power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345495.6A CN109367398A (en) | 2018-11-13 | 2018-11-13 | DC auxiliary power system |
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| CN109367398A true CN109367398A (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811345495.6A Pending CN109367398A (en) | 2018-11-13 | 2018-11-13 | DC auxiliary power system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228372A (en) * | 2019-06-18 | 2019-09-13 | 中车大连机车车辆有限公司 | A kind of third rail and lithium battery hybrid power supply circuit |
| CN111332122A (en) * | 2020-03-26 | 2020-06-26 | 深圳市波斯曼技术有限公司 | Power supply system adopting distributed low-power supply module |
| CN111731141A (en) * | 2020-06-05 | 2020-10-02 | 北京北交新能科技有限公司 | Asymmetric auxiliary power supply system for rail transit vehicle and charging method thereof |
| WO2024050981A1 (en) * | 2022-09-09 | 2024-03-14 | 中车长春轨道客车股份有限公司 | Train power supply system, train power supply method, and train |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956598A (en) * | 2017-04-11 | 2017-07-18 | 山东大学 | A kind of electric power electric transformer tractive power supply system for improving power density |
| EP3300982A1 (en) * | 2016-09-29 | 2018-04-04 | Siemens Aktiengesellschaft | Energy supply system for a rail vehicle |
| CN107878228A (en) * | 2017-10-26 | 2018-04-06 | 北京北交新能科技有限公司 | The new auxiliary power supply system and method for a kind of emergent traveling of achievable EMUs |
| CN209063903U (en) * | 2018-11-13 | 2019-07-05 | 中国铁路总公司 | DC auxiliary power system |
-
2018
- 2018-11-13 CN CN201811345495.6A patent/CN109367398A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3300982A1 (en) * | 2016-09-29 | 2018-04-04 | Siemens Aktiengesellschaft | Energy supply system for a rail vehicle |
| CN106956598A (en) * | 2017-04-11 | 2017-07-18 | 山东大学 | A kind of electric power electric transformer tractive power supply system for improving power density |
| CN107878228A (en) * | 2017-10-26 | 2018-04-06 | 北京北交新能科技有限公司 | The new auxiliary power supply system and method for a kind of emergent traveling of achievable EMUs |
| CN209063903U (en) * | 2018-11-13 | 2019-07-05 | 中国铁路总公司 | DC auxiliary power system |
Non-Patent Citations (1)
| Title |
|---|
| 张茂帆;刘瑶;王孔明;杨美传;杨文锐;: "悬挂式单轨列车辅助供电系统方案研究", 铁道机车车辆, no. 02, 25 April 2016 (2016-04-25), pages 100 - 105 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228372A (en) * | 2019-06-18 | 2019-09-13 | 中车大连机车车辆有限公司 | A kind of third rail and lithium battery hybrid power supply circuit |
| CN111332122A (en) * | 2020-03-26 | 2020-06-26 | 深圳市波斯曼技术有限公司 | Power supply system adopting distributed low-power supply module |
| CN111731141A (en) * | 2020-06-05 | 2020-10-02 | 北京北交新能科技有限公司 | Asymmetric auxiliary power supply system for rail transit vehicle and charging method thereof |
| WO2024050981A1 (en) * | 2022-09-09 | 2024-03-14 | 中车长春轨道客车股份有限公司 | Train power supply system, train power supply method, and train |
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