CN109217314A - A kind of alternating current-direct current mixed support power supply system - Google Patents
A kind of alternating current-direct current mixed support power supply system Download PDFInfo
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- CN109217314A CN109217314A CN201811345494.1A CN201811345494A CN109217314A CN 109217314 A CN109217314 A CN 109217314A CN 201811345494 A CN201811345494 A CN 201811345494A CN 109217314 A CN109217314 A CN 109217314A
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- 238000004378 air conditioning Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/02—Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention provides a kind of alternating current-direct current mixed support power supply system, alternating current-direct current mixed support power supply system includes: middle pressure energy source router, high voltage dc bus, middle pressure DC bus, middle pressure ac bus；Alternating current-direct current mixed support power supply system is train and the load supplying of train by middle pressure energy source router；Middle pressure energy source router is connected to high voltage dc bus, middle pressure DC bus, middle pressure ac bus, by being connected to middle pressure ac bus, for providing alternating current for the load of train, by being connected to middle pressure DC bus, for providing direct current for the load of train.The embodiment of the present invention is by middle pressure energy source router instead of traditional exchange auxiliary power supply system, having evaded uncontrollable rectifier load leads to a series of problems caused by alternating voltage distortion, includes reducing system effectiveness, introducing harmonic loss and torque pulsation for other AC loads.
Description
Technical field
The present invention relates to rail vehicle on-board electrical systems field more particularly to a kind of alternating current-direct current mixed support power supply systems
System.
Background technique
With the development in pluralism of train and railway technology, rail traffic shows more and more types, not only throughout
In the land transport of long range, also it is widely used in the urban public transport of short-distance and medium-distance.Wherein, traction-auxiliary system is
The important mobile unit of rail vehicle, trailer system provide traction power using traction convertor as core apparatus, for vehicle, auxiliary
System is threephase loads and the part single-phase loads such as whole-vehicle air-conditioner, air compressor, cooling blower using AuCT as core
AC power source is provided.DC inverter at three-phase alternating current, is realized through transformer and is become by the subordinate inverter in AuCT
Pressure and isolation obtain power frequency three-phase alternating current after the sinusoidal filter filtering constituted through inductance, capacitor, are all friendships of train
Flow device power supply.It is load supplying that auxiliary system, which mostly uses the mode of AC output parallel connection to form 380V ac bus, and exchange is negative
Load mainly has the equipment such as air-conditioning, charger, cooling blower.And in city rail vehicle, the loads such as convertible frequency air-conditioner and charger are adopted more
It is first direct current by 380V AC rectification with the mode of uncontrollable rectifier, then carries out the transformation of electrical energy of rear stage again.
However the use of the rectification link of the prior art, transformation of electrical energy link is on the one hand increased, system effectiveness is reduced,
On the other hand the problem of causing harmonic pollution and voltage distortion.And system is assisted using the framework limitation of single 380V ac bus
The promotion for performance of uniting, also has too many difficulties to cope in flexibility.
Summary of the invention
In order to reduce the link of transformation of electrical energy, electric energy loss is reduced, the flexibility of auxiliary system performance is improved, the present invention is real
Apply example and provide a kind of alternating current-direct current mixed support power supply system, the system include: middle pressure energy source router, high voltage dc bus,
Middle pressure DC bus, middle pressure ac bus；
The alternating current-direct current mixed support power supply system is train and the load supplying of train by middle pressure energy source router；
Medium pressure energy source router is connected to high voltage dc bus, middle pressure DC bus, middle pressure ac bus, passes through company
It is connected to middle pressure ac bus, for providing alternating current for the load of train, by being connected to middle pressure DC bus, for being train
Load provide direct current.
Further, middle pressure energy source router includes: middle pressure alternating current unit, middle pressure direct current component；
Medium pressure energy source router is connected to middle pressure ac bus by medium pressure alternating current unit, for for train
Load provides alternating current, and medium pressure energy source router is connected to middle pressure DC bus by medium pressure direct current component, is used for
Direct current is provided for the load of train.
Further, further includes: energy storage device；
The energy storage device connects the high voltage dc bus, for powering for the high voltage dc bus；Or
The energy storage device connects medium pressure DC bus, is the high voltage direct current by medium pressure energy source router
Bussed supply.
Further, energy storage device includes: energy storage electrical energy changer and energy-storage travelling wave tube；
The energy-storage travelling wave tube is connected to high voltage dc bus by the energy storage electrical energy changer, for being the high pressure
It is DC bus powered；Or
The energy-storage travelling wave tube connects medium pressure DC bus by the energy storage electrical energy changer, passes through medium pressure
Energy source router is high voltage dc bus power supply.
Further, further includes:
Break-up device is set on the high voltage dc bus, for being segmented to the high voltage dc bus；
Break-up device is set on medium pressure DC bus, for being segmented to medium pressure DC bus；
Break-up device is set on medium pressure ac bus, for being segmented to medium pressure ac bus.
Further, middle pressure alternating current unit, middle pressure direct current component export the alternating current and institute by circuit topological structure
State direct current.
Further, further includes: traction invertor and traction electric machine；
The traction electric machine is connected to the high voltage dc bus by the traction invertor.
Further, further includes: charger；
Medium pressure DC bus is connected to low-voltage direct bus by the charger, and the charger is to medium pressure
Direct current decompression in DC bus, for being low-voltage direct bussed supply.
A kind of alternating current-direct current mixed support power supply system provided in an embodiment of the present invention, is connected to by middle pressure energy source router
High voltage dc bus, middle pressure DC bus, middle pressure ac bus, realize the transformation of voltage and the control of energy, provide for train
The effect of alternating current-direct current hybrid power supply.
For above and other objects, features and advantages of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate institute's accompanying drawings, it is described in detail below.
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 only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is middle pressure energy source router electrical schematic provided in an embodiment of the present invention；
Fig. 2 is middle pressure energy source router structural block diagram provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of alternating current-direct current mixed support power supply system provided in an embodiment of the present invention；
Fig. 4 is energy storage device structure block diagram provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In rail vehicle carrying is defeated, traction-auxiliary system is the important mobile unit of rail vehicle, trailer system with
Traction convertor is core apparatus, provides traction power for vehicle, and auxiliary system is that vehicle is empty using AuCT as core
The threephase loads such as tune, air compressor, cooling blower and part single-phase load provide AC power source.However frequency air-conditioning and charger
It is first direct current by 380V AC rectification that equal loads, which mostly use the mode of uncontrollable rectifier, and the electric energy for then carrying out rear stage again becomes
It changes, will increase transformation of electrical energy link in this way, reduce system effectiveness and flexibility.
Application of the middle pressure DC auxiliary power system as direct current system in railway transportation equipment field, has significant property
Energy advantage, represents future thrust.Therefore, to solve the above problems, the embodiment of the present invention provides a kind of alternating current-direct current mixing
Auxiliary power supply system, alternating current-direct current mixed support power supply system include: middle pressure energy source router, high voltage dc bus, middle straightening stream
Bus, middle pressure ac bus；
Alternating current-direct current mixed support power supply system is train and the load supplying of train by middle pressure energy source router；
Middle pressure energy source router is connected to high voltage dc bus, middle pressure DC bus, middle pressure ac bus, by being connected to
Middle pressure ac bus, for providing alternating current for the load of train, by being connected to middle pressure DC bus, for bearing for train
It carries and direct current is provided.
Specifically, input, output, conversion, the storage of different energy sources carrier may be implemented in energy source router, different energy are realized
Organic perforation of interconnection complementation, the production and consumptive link of source form, realizes the fusion of different characteristic energy flow.As shown in Figure 1,
Fig. 1 is middle pressure energy source router electrical schematic provided in an embodiment of the present invention, in embodiments of the present invention, the alternating current-direct current provided
Mixed support power supply system is core with middle pressure energy source router 104, is that DC bus 102 and middle pressure ac bus are pressed in train
103 power supply device is mainly used for providing required alternating current and straight for middle pressure ac bus 103 and middle pressure DC bus 102
Galvanic electricity.High voltage dc bus is mainly used for traction power, and energy source is in contact net or third-rail feeding.It needs to illustrate
It is to be provided with high voltage dc bus 101, middle pressure DC bus 102, middle pressure ac bus 103 on the rail vehicle, wherein high
The voltage class of pressure DC bus 101 to middle pressure ac bus 103 is successively decreased, the voltage class 750V of high voltage dc bus 101 with
On, it is middle pressure DC bus 102 voltage class be 600V to 700V, it is middle pressure ac bus 103 voltage class be 300V extremely
400V。
In the embodiment of the present invention, middle pressure energy source router has at least three port, be separately connected high voltage dc bus 101,
Middle pressure DC bus 102 and middle pressure ac bus 103, realize the transformation of voltage and the control of energy.Middle pressure DC bus is column
The power supply of vehicle DC load, middle pressure ac bus are the power supply of train AC load.Herein, high voltage dc bus is through entire column
Vehicle is mainly used for various high voltage direct current load supplyings, including but not limited to traction invertor, the equipment such as traction electric machine.Middle straightening
It flows bus and runs through entire train, be mainly used for various middle straightening current loads 106 and power, including but not limited to convertible frequency air-conditioner etc. is set
It is standby.Middle pressure ac bus runs through entire train, and predominantly various middle pressure AC loads 107 are powered, including but not limited to air pressure
The equipment such as contracting machine, cooling blower and water pump.
The embodiment of the present invention, instead of traditional exchange auxiliary power supply system, has been evaded and not having be controlled by middle pressure energy source router
Rectification load leads to a series of problems caused by alternating voltage distortion, includes reducing system effectiveness, being other AC loads
Introduce harmonic loss and torque pulsation.
Content based on the above embodiment, as a kind of alternative embodiment: middle pressure energy source router includes: that middle pressure exchange is single
First, middle pressure direct current component；
Middle pressure energy source router is connected to middle pressure ac bus by middle pressure alternating current unit, for providing for the load of train
Alternating current, middle pressure energy source router is connected to middle pressure DC bus by middle pressure direct current component, for providing for the load of train
Direct current.
Specifically, Fig. 2 is middle pressure energy source router structural block diagram provided in an embodiment of the present invention, as shown in Fig. 2, middle pressure energy
Source router includes: middle pressure direct current component 201 and middle pressure alternating current unit 202, and middle pressure energy source router passes through middle pressure alternating current unit
202 are connected to middle pressure ac bus, and middle pressure alternating current unit 202 inputs alternating current by circuit topological structure and circuit rule
To middle pressure ac bus, alternating current is provided to be connected to the load of train of middle pressure ac bus.Middle pressure energy source router passes through
Middle pressure direct current component 201 is connected to middle pressure DC bus, and middle pressure direct current component 201 is made by circuit topological structure and circuit rule
DC supply input is obtained to middle pressure DC bus, provides direct current to be connected to the load of train of middle pressure DC bus.The present invention
The structure of middle pressure energy source router in embodiment is not limited to form shown in Fig. 2, as long as can be middle pressure DC bus and middle pressure
Power supply needed for ac bus provides, within the protection scope of the embodiment of the present invention.
The embodiment of the present invention is by middle pressure direct current component, and middle pressure alternating current unit provides power supply for train load, using high frequency
The direct current AuCT of technology usually can realize significant lightweight than the exchange AuCT of power frequency.Direct current transportation energy
The stronger realization power transmission and distribution link loss of weight of power.
Content based on the above embodiment, as a kind of alternative embodiment: further include: energy storage device；
Energy storage device connects high voltage dc bus, for powering for high voltage dc bus；Or
DC bus is pressed in energy storage device connection, is high voltage dc bus power supply by middle pressure energy source router.
Specifically, as shown in figure 3, Fig. 3 is the signal of alternating current-direct current mixed support power supply system provided in an embodiment of the present invention
Figure.Energy storage device 301 is used for the storage of electric energy, and when high-tension line breaks down, energy storage device 301 connects high voltage dc bus
101, for powering for high voltage dc bus 101.Energy storage device 301 presses DC bus 102 in can also connecting, according to middle pressure energy source
The power twocouese mobility of router 104 can power at this time for high voltage dc bus 101.It should be noted that in this hair
In bright embodiment, middle pressure energy source router 104 both can be flowed with auto parallel Connection, can also carry out energy according to Train Control demand
Scheduling.And middle pressure energy source router 104 is a kind of electrical energy transformer of isolated form, and it can be according to train demand, designing has power
One-way flow or the function of two-way flow, to realize the traction of train.
The embodiment of the present invention by provide energy storage device be high voltage dc bus power, and with middle pressure energy source router phase
In conjunction with, energy storage device connection in press DC bus in the case where also can for high voltage dc bus power, quickly realize column
Vehicle traction, reduces the link of transformation of electrical energy, reduces electric energy loss and operating cost.
Content based on the above embodiment, as a kind of alternative embodiment: energy storage device includes: energy storage electrical energy changer
And energy-storage travelling wave tube；
Energy-storage travelling wave tube is connected to high voltage dc bus by energy storage electrical energy changer, for supplying for high voltage dc bus
Electricity；Or
Energy-storage travelling wave tube is high pressure by middle pressure energy source router by pressing DC bus in the connection of energy storage electrical energy changer
It is DC bus powered.
Specifically, as shown in figure 4, Fig. 4 is energy storage device structure block diagram provided in an embodiment of the present invention, in figure, energy storage dress
Setting includes: energy storage electrical energy changer 401 and energy-storage travelling wave tube 402, and energy-storage travelling wave tube 402 includes but is not limited to power battery, super
Capacitor.The control to the flowing of electric energy in energy-storage travelling wave tube 402 may be implemented in energy storage electrical energy changer 401, and energy-storage travelling wave tube 402 is logical
It crosses energy storage electrical energy changer 401 and is connected to DC bus, when energy storage electrical energy changer 401 is connected to high voltage dc bus
When, it is converted according to electric energy, is powered for high voltage dc bus.Straightening stream is female in the connection of energy source device energy electrical energy changer 401
When line, according to the power twocouese mobility of middle pressure energy source router, or high voltage dc bus power supply, to realize column
Vehicle traction.
The embodiment of the present invention is high voltage dc bus power supply by the energy storage electrical energy changer and energy-storage travelling wave tube provided, and
It is combined with middle pressure energy source router, also can be high straightening in the case where pressing DC bus in the connection of energy storage electrical energy changer
Bussed supply is flowed, quickly provides tractive force for train.
Content based on the above embodiment, as a kind of alternative embodiment: further include:
Break-up device is set on high voltage dc bus, for being segmented to high voltage dc bus；
Break-up device is set on middle pressure DC bus, is segmented for centering pressure DC bus；
Break-up device is set on middle pressure ac bus, is segmented for centering pressure ac bus.
Specifically, settable break-up device can in terms of high voltage dc bus, middle pressure DC bus, middle pressure ac bus
To there is arc extinguishing ability break-up device, such as contactor, breaker, electronic power switch, can also for arc extinguishing ability disconnecting switch or
Bus is divided into several sections as needed by other break-up devices.As shown in figure 3, Fig. 3 mesohigh DC bus 101, middle straightening stream are female
Line 102, middle pressure ac bus 103 are respectively arranged with high-voltage direct current switch device 11, middle pressure DC switchgear 21, the exchange of middle pressure
Switching device 31, to by bus section.Such as: when one end of high voltage dc bus 101 is broken down, close high voltage direct current
Switching device 11, isolated fault end at this time, so that the other end operates normally.It should be noted that for the comprehensive direct current system of train
Safety in operation and reliability, improve the failure Ability of emergency management of DC auxiliary power system, high voltage dc bus, in
Break-up device is set in terms of pressing DC bus, middle pressure ac bus, can also be needed not making this setting according to train actual motion.
Break-up device provided in an embodiment of the present invention can carry out Fault Isolation in failure, reach safe train operation effect
Fruit.
Content based on the above embodiment, as a kind of alternative embodiment: middle pressure alternating current unit, middle pressure direct current component pass through
Circuit topological structure exports alternating current and direct current.
Specifically, the middle pressure alternating current unit and middle pressure direct current component in middle pressure energy source router can be opened by LLC resonance soft
Pass, phase-shifting full-bridge topology or other circuit topological structures export direct current, are provided simultaneously with defeated by circuit topologies such as three-phase inversions
Alternating current out, such as: three-phase alternating current.The embodiment of the present invention does not make specific limit to circuit topological structure.
The embodiment of the present invention provides power supply by a variety of circuit topological structures for middle pressure DC bus and middle pressure ac bus,
It optimizes power quality, make system lightweight, facilitation.
Content based on the above embodiment, as a kind of alternative embodiment: further include: traction invertor and traction electric machine；
Traction electric machine is connected to high voltage dc bus by traction invertor.
Specifically, as shown in figure 3, traction invertor 105a and traction electric machine 105b is as the negative of high voltage dc bus 101
It carries, traction electric machine 105b is connected to high voltage dc bus 101 by traction invertor 105a in figure, realization electric energy and mechanical energy
Conversion, provides tractive force or brake force for train.The embodiment of the present invention does not make the quantity of separate unit traction invertor driving motor
It limits, traction electric machine type includes but is not limited to asynchronous machine and synchronous motor.
The embodiment of the present invention by traction invertor to traction electric machine it is electronic converted and be transferred to high voltage direct current mother
Line provides tractive force and brake force for train.
Content based on the above embodiment, as a kind of alternative embodiment: further include: charger；
Middle pressure DC bus is connected to low-voltage direct bus by charger, and the direct current in DC bus is pressed in charger centering
Electricity decompression, for being low-voltage direct bussed supply.
Specifically, as shown in figure 3, in figure, charger 23 be located at middle pressure DC bus 102 and low-voltage direct bus 104 it
Between, DC bus 102 is pressed in the access of charger 23, is that low-voltage direct is female after the direct current decompression in middle pressure DC bus 102
Line 104 is powered.Low-voltage direct bus 104 runs through entire train, and it is 110V that the voltage class of low-voltage direct bus 104, which is 110V,
41 and 110V battery 42 is loaded to power.
The embodiment of the present invention by charger access in press between DC bus and low-voltage direct bus, charger passes through centering pressure
Direct current in DC bus is depressured mode, directly as the power supply of low-voltage direct bus, conveniently accessible vehicle-mounted energy storage device,
Convenient for future by the boosting of low-voltage direct bus be pulling equipment power.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (8)
1. a kind of alternating current-direct current mixed support power supply system, which is characterized in that during the alternating current-direct current mixed support power supply system includes:
Pressure energy source router, high voltage dc bus, middle pressure DC bus, middle pressure ac bus；
The alternating current-direct current mixed support power supply system is train and the load supplying of train by middle pressure energy source router；
Medium pressure energy source router is connected to high voltage dc bus, middle pressure DC bus, middle pressure ac bus, by being connected to
Middle pressure ac bus, for providing alternating current for the load of train, by being connected to middle pressure DC bus, for bearing for train
It carries and direct current is provided.
2. system according to claim 1, which is characterized in that medium pressure energy source router include: middle pressure alternating current unit,
Middle pressure direct current component；
Medium pressure energy source router is connected to middle pressure ac bus by medium pressure alternating current unit, for the load for train
Alternating current is provided, medium pressure energy source router is connected to middle pressure DC bus by medium pressure direct current component, for being column
The load of vehicle provides direct current.
3. system according to claim 1, which is characterized in that further include: energy storage device；
The energy storage device connects the high voltage dc bus, for powering for the high voltage dc bus；Or
The energy storage device connects medium pressure DC bus, is the high voltage dc bus by medium pressure energy source router
Power supply.
4. system according to claim 3, which is characterized in that the energy storage device include: energy storage electrical energy changer and
Energy-storage travelling wave tube；
The energy-storage travelling wave tube is connected to high voltage dc bus by the energy storage electrical energy changer, for being the high voltage direct current
Bussed supply；Or
The energy-storage travelling wave tube is connected to middle pressure DC bus by the energy storage electrical energy changer, passes through medium pressure energy road
It is high voltage dc bus power supply by device.
5. system according to claim 1, which is characterized in that further include:
Break-up device is set on the high voltage dc bus, for being segmented to the high voltage dc bus；
Break-up device is set on medium pressure DC bus, for being segmented to medium pressure DC bus；
Break-up device is set on medium pressure ac bus, for being segmented to medium pressure ac bus.
6. system according to claim 2, which is characterized in that medium pressure alternating current unit, middle pressure direct current component pass through electricity
Road topological structure exports the alternating current and the direct current.
7. system according to claim 1, which is characterized in that further include: traction invertor and traction electric machine；
The traction electric machine is connected to the high voltage dc bus by the traction invertor.
8. system according to claim 1, which is characterized in that further include: charger；
Medium pressure DC bus is connected to low-voltage direct bus by the charger, and the charger is to medium pressure direct current
Direct current decompression in bus, for being low-voltage direct bussed supply.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110942692A (en) * | 2019-11-08 | 2020-03-31 | 中车长春轨道客车股份有限公司 | Intelligent debugging and training system and method for auxiliary power supply of urban railway passenger car |
| CN112124152A (en) * | 2020-09-22 | 2020-12-25 | 中车株洲电力机车有限公司 | Power supply circuit and power supply control method for locomotive auxiliary system |
| CN113552403A (en) * | 2021-07-12 | 2021-10-26 | 中国国家铁路集团有限公司 | Three-phase output voltage and current distortion real-time monitoring method for train inverter |
| CN114629119A (en) * | 2020-12-10 | 2022-06-14 | 武威电建实业有限公司 | Power distribution cabinet for power alternating current-direct current hybrid distribution network |
| CN114906015A (en) * | 2022-04-21 | 2022-08-16 | 西南交通大学 | Alternating current-direct current traction power supply structure and control method for electrified railway |
| 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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