CN208835750U - A kind of comprehensive direct current system - Google Patents
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- CN208835750U CN208835750U CN201821868698.9U CN201821868698U CN208835750U CN 208835750 U CN208835750 U CN 208835750U CN 201821868698 U CN201821868698 U CN 201821868698U CN 208835750 U CN208835750 U CN 208835750U
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- 230000009466 transformation Effects 0.000 description 9
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- 229910003978 SiClx Inorganic materials 0.000 description 2
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Abstract
The utility model provides a kind of comprehensive direct current system, which includes: high voltage dc bus, middle pressure DC bus, high-voltage power apparatus, middle piezoelectricity source device；The electric energy of train Alternating Current Power Supply contact net is transferred to the load of train by high voltage dc bus and middle pressure DC bus by comprehensive direct current system；High-voltage power apparatus is connected with train Alternating Current Power Supply contact net and high voltage dc bus, for providing direct current for the train load that is connected on high voltage dc bus；Middle piezoelectricity source device is connected to high voltage dc bus and middle pressure DC bus, for providing direct current for the load of train that is connected to middle pressure DC bus.A kind of comprehensive direct current system provided by the utility model, pass through the connection transformational relation between high voltage dc bus, middle pressure DC bus, high-voltage power apparatus, middle piezoelectricity source device, all electrical equipments all will be subjected to grid-connected work according to unified access standard, the coupled relation between different equipments is greatly reduced, the technical threshold of equipment is reduced.
Description
Technical field
The utility model relates to rail vehicle on-board electrical systems field more particularly to a kind of comprehensive direct current systems.
Background technique
In high-speed EMUs, " power decentralized " framework is the technical solution of mainstream.Power decentralized refers to the power of train
Converting means is distributed in multiple compartments, so that multiple compartments all have traction power.
In the prior art, multiple traction convertors and multiple AuCTs usually are distributed in different compartments, to provide
High-speed rail train, the traction power and auxiliary power supply of intercity motor-car.The input of traction convertor be tractive transformer secondary side around
The single-phase alternating current of group.Direct current is converted to by rectifier, is then reverse by the traction invertor in traction convertor
Three phase variable frequency transformation alternating current gives traction electric machine, realizes traction and electric braking.Subordinate inverter in AuCT will be straight
Galvanic electricity is reverse into three-phase alternating current, realizes transformation and isolation through transformer, and the sinusoidal filter constituted through inductance, capacitor filters
Afterwards, all alternating current equipments that power frequency three-phase alternating current is train are obtained to power.The power conversion unit of train is with traction current transformation
Device and AuCT are the system architecture of core.
It is relatively independent between the distinct device of train but in traditional power decentralized framework, lack between power unit
Power connection.System flexibility is insufficient, cannot respond to higher intelligent demand.Certain is realized by transformation under existing system architecture
Though feasible in kind of specific function principle, global optimum room for promotion is had too many difficulties to cope with especially in terms of flexibility than relatively limited.
Utility model content
To improve the coupled relation between different equipments, flexibility ratio is improved, the utility model embodiment provides a kind of comprehensive
Direct current system is closed, which includes: high voltage dc bus, middle pressure DC bus, high-voltage power apparatus, middle piezoelectricity source device；
The comprehensive direct current system is by the high voltage dc bus and medium pressure DC bus by train Alternating Current Power Supply
The electric energy of contact net is transferred to the load of train；
The high-voltage power apparatus is connected with the train Alternating Current Power Supply contact net and the high voltage dc bus, is used for
Train load to be connected on the high voltage dc bus provides direct current；
Medium pressure power supply device is connected to the high voltage dc bus and medium pressure DC bus, for be connected to
The load of the train of middle pressure DC bus provides direct current.
Further, the high-voltage power apparatus includes: Industrial Frequency Transformer, rectifier；
It is connected to train Alternating Current Power Supply contact net by the Industrial Frequency Transformer primary side, secondary side is connected to the rectification
The output end of the rectifier is connected to the high voltage dc bus by device, for providing direct current 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 that the high voltage direct current is female by medium pressure power supply device
Line power supply.
Further, the 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
Power supply device 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.
Further, medium pressure power supply device exports the direct current by circuit topological structure.
Further, further includes: haulage capacity conversion equipment；
The haulage capacity conversion equipment connects the high voltage dc bus, for powering for the high voltage dc bus.
Further, haulage capacity conversion equipment includes: traction invertor and traction electric machine；
The traction electric machine is connected to the high voltage dc bus by the traction invertor.
The utility model embodiment provides a kind of comprehensive direct current system, by high voltage dc bus, middle pressure DC bus,
Connection transformational relation between high-voltage power apparatus, middle piezoelectricity source device, provides a kind of standardized platform of opening: all electrical
Equipment all will carry out grid-connected work according to unified access standard, greatly reduces the coupled relation between different equipments, reduces
The technical threshold of equipment.Promote high-speed rail equipment field more professionally more competent eventually by standardization, it is competing to promote market
Degree of competing and vigor, it is final to significantly reduce equipment cost and maintenance cost, Lifting Convey enterprise operation benefit.And middle pressure auxiliary is born
The rectification link eliminated in tradition access AC system is carried, system is simplified, improves efficiency.The system be equipment level and
The innovation platform of device application.Various research hotspots in recent years, either electric power electric transformer technology or New Type of Carbon
The application of SiClx device all will benefit from the development of the system.Its technical characterstic is given full play in a completely new system, without
It is only to do the other substitution of component-level in existing system, so that will be provided with two sets of internets on the following train, is not only useful for arranging
The real-time ethernet of vehicle control, more there is the energy internet to integrate direct current system as representative.
For the above and other objects, features and advantages of the utility model can be clearer and more comprehensible, preferable reality is cited below particularly
Example is applied, and cooperates institute's accompanying drawings, is described in detail below.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of the comprehensive direct current system of train provided by the embodiment of the utility model；
Fig. 2 is high-voltage power apparatus schematic diagram provided by the embodiment of the utility model；
Fig. 3 is energy storage device schematic diagram provided by the embodiment of the utility model；
Fig. 4 is haulage capacity conversion equipment schematic diagram provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In high-speed EMUs, usually in different compartments, multiple traction convertors and multiple AuCTs are distributed, to mention
For high-speed rail train, the traction power and auxiliary power supply of intercity motor-car.But the alternating current of traction convertor input will pass through rectification
Device is converted to direct current, is then reverse into three phase variable frequency transformation alternating current by the traction invertor in traction convertor, gives
Traction electric machine realizes traction and electric braking.Subordinate inverter in AuCT is by DC inverter at three-phase alternating current, warp
Transformer realizes transformation and isolation, after the sinusoidal filter filtering constituted through inductance, capacitor, obtains power frequency three-phase alternating current as column
All alternating current equipments of vehicle are powered.At this point, in traditional power decentralized framework, it is relatively independent between the distinct device of train, it moves
Lack power connection between power unit.System flexibility is insufficient, cannot respond to higher intelligent demand.
Therefore, to solve the above problems, the utility model embodiment provides a kind of comprehensive direct current system, which includes:
High voltage dc bus, middle pressure DC bus, high-voltage power apparatus, middle piezoelectricity source device；
Comprehensive direct current system passes through high voltage dc bus and middle pressure DC bus for the electric energy of train Alternating Current Power Supply contact net
It is transferred to the load of train；
High-voltage power apparatus is connected with train Alternating Current Power Supply contact net and high voltage dc bus, for be connected to high pressure
Train load on DC bus provides direct current；
Middle piezoelectricity source device is connected to high voltage dc bus and middle pressure DC bus, for be connected to middle pressure DC bus
Train load provide direct current.
Specifically, as shown in FIG. 1, FIG. 1 is the schematic diagram of the comprehensive direct current system of train provided by the embodiment of the utility model,
In figure, it is provided with high voltage dc bus 1, middle pressure DC bus 2 and low-voltage direct bus 3, herein, high pressure on the rail vehicle
DC bus 1, middle pressure DC bus 2 and low-voltage direct bus 3 run through entire train, wherein high voltage dc bus 1, middle straightening
The voltage class of stream bus 2 and low-voltage direct bus 3 is successively decreased, the voltage class 750V or more of high voltage dc bus 1, middle straightening stream
The voltage class of bus 2 is 600V to 700V, and the voltage class of low-voltage direct bus 3 is 110V.
High voltage dc bus 1 is mainly used for traction power, and energy source is in contact net or third-rail feeding.When train is adopted
When with direct current supply, by controlling direct current supply switching device 12, by external dc for being electrically connected to high voltage dc bus 1, it is
It is connected to the train load power supply of high voltage dc bus, wherein during train load on high voltage dc bus includes but is not limited to
The equipment such as piezoelectricity source device 22, haulage capacity conversion equipment 23 and energy storage device 24.It is high when train uses 25kV Alternating Current Power Supply
Piezoelectricity source device 11 is connected with train Alternating Current Power Supply contact net and high voltage dc bus 1, the power supply as high voltage dc bus 1
Device realizes the transformation of voltage and the two-way flow of energy, realizes electrical isolation, to be connected to the column on high voltage dc bus
Vehicle load provides direct current.
Middle piezoelectricity source device is connected to high voltage dc bus and middle pressure DC bus, is arranged in high voltage dc bus and middle pressure
It between DC bus, after middle piezoelectricity source device 22 accesses high voltage dc bus 1, is depressured, is supplied for middle pressure DC bus 2
Electricity.Middle piezoelectricity source device 22 presses the power supply device of DC bus 2 as in, for be connected to it is middle pressure DC bus 2 on middle pressure it is auxiliary
It helps load 33 to provide direct current, realizes the control of voltage and the control of energy flow, realize electrical isolation, have parallel operation
Ability both can be flowed with auto parallel Connection, can also carry out energy scheduling according to Train Control demand.Wherein, middle pressure assistant load
33 various types of cooling blowers, air compressor, the frequency-variable air-conditioners etc. including but not limited to arranged entirely.
The utility model embodiment provides a kind of comprehensive direct current system, by high voltage dc bus, middle pressure DC bus,
Connection transformational relation between high-voltage power apparatus, middle piezoelectricity source device, provides a kind of standardized platform of opening: all electrical
Equipment all will carry out grid-connected work according to unified access standard, greatly reduces the coupled relation between different equipments, reduces
The technical threshold of equipment.Promote high-speed rail equipment field more professionally more competent eventually by standardization, it is competing to promote market
Degree of competing and vigor, it is final to significantly reduce equipment cost and maintenance cost, Lifting Convey enterprise operation benefit.And middle pressure auxiliary is born
The rectification link eliminated in tradition access AC system is carried, system is simplified, improves efficiency.The system be equipment level and
The innovation platform of device application.Various research hotspots in recent years, either electric power electric transformer technology or New Type of Carbon
The application of SiClx device all will benefit from the development of the system.Its technical characterstic is given full play in a completely new system, without
It is only to do the other substitution of component-level in existing system, so that will be provided with two sets of internets on the following train, is not only useful for arranging
The real-time ethernet of vehicle control, more there is the energy internet to integrate direct current system as representative.
Content based on the above embodiment, as a kind of alternative embodiment: high-voltage power apparatus includes: Industrial Frequency Transformer,
Rectifier；
It is connected to train Alternating Current Power Supply contact net by Industrial Frequency Transformer primary side, secondary side is connected to rectifier, will be whole
The output end of stream device is connected to high voltage dc bus, for providing direct current for the load of train.
Specifically, as shown in Fig. 2, Fig. 2 is high-voltage power apparatus schematic diagram provided by the embodiment of the utility model, high-voltage electricity
Source device 11 is the power supply device for connecting train Alternating Current Power Supply contact net and high voltage dc bus 1, in figure, high-voltage power apparatus 11
Including Industrial Frequency Transformer 111, rectifier 112, wherein 111 primary side of Industrial Frequency Transformer connects train Alternating Current Power Supply contact net, i.e.,
25kv Alternating Current Power Supply, secondary side connects rectifier 112, and 112 output end of rectifier is connected to high voltage dc bus 1, for connection
Load to the train of high voltage dc bus 1 provides direct current.High-voltage power apparatus 11 includes but is not limited to by Industrial Frequency Transformer
111 and rectifier 112 form electrical energy changer or electric power electric transformer device.
The utility model embodiment realizes the transformation of voltage by Industrial Frequency Transformer and rectifier in high-voltage power apparatus
With the two-way flow of energy, electrical isolation is realized.
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 piezoelectricity source device.
Specifically, when high-tension line breaks down, energy storage fills as shown in Figure 1, energy storage device 24 is used for the storage of electric energy
24 connection high voltage dc bus 1 are set, for powering for high voltage dc bus 1.Energy storage device 24 presses DC bus in can also connecting
2, according to the power twocouese mobility of middle piezoelectricity source device 22, can power at this time for high voltage dc bus 1.It needs to illustrate
It is that in the utility model embodiment, middle piezoelectricity source device 22 both can be flowed with auto parallel Connection, it can also be according to Train Control need
It asks and carries out energy scheduling.And middle piezoelectricity source device 22 is a kind of electrical energy transformer of isolated form, can design tool according to train demand
There is the function of power one-way flow or two-way flow, to realize the traction of train.
The utility model embodiment by provide energy storage device be high voltage dc bus power, and with middle piezoelectricity source device
It combines, can also power in the case where pressing DC bus in energy storage device connection for high voltage dc bus, quickly realize
Train traction reduces the link of transformation of electrical energy, reduces electric energy loss and operating cost.
The utility model embodiment by provide energy storage device be high voltage dc bus power, and with middle piezoelectricity source device
It combines, the control of voltage and the control characteristic of energy flow can be realized according to middle piezoelectricity source device, so that the traction of train
It is unified in the internet of the energy with auxiliary power supply, numerous current transformers and the power load energy interconnect networking, and framework is flexible, are promoted
Availability reduces electric energy conversion links, improves system effectiveness.
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 straightening by middle piezoelectricity source device by pressing DC bus in the connection of energy storage electrical energy changer
Flow bussed supply.
Specifically, as shown in figure 3, Fig. 3 is energy storage device schematic diagram provided by the embodiment of the utility model.In figure, energy storage
Device includes: energy storage electrical energy changer 241 and energy-storage travelling wave tube 242, and energy-storage travelling wave tube 242 includes but is not limited to power battery, surpasses
Grade capacitor.The control to the flowing of electric energy in energy-storage travelling wave tube 242, energy-storage travelling wave tube 242 may be implemented in energy storage electrical energy changer 241
It is connected to DC bus by energy storage electrical energy changer 241, when energy storage electrical energy changer 241 is connected to high voltage dc bus
1, it is converted according to electric energy, is powered for high voltage dc bus 1.When pressing DC bus 2 in the connection of energy storage electrical energy changer 241, root
According to the power twocouese mobility of middle piezoelectricity source device 22, or high voltage dc bus power supply, to realize train traction.
The utility model embodiment is high voltage dc bus confession by the energy storage electrical energy changer and energy-storage travelling wave tube provided
Electricity, and combined with middle piezoelectricity source device, it also can be height in the case where pressing DC bus in the connection of energy storage electrical energy changer
It presses DC bus powered, 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.
Specifically, as shown in Figure 1, break-up device is arranged on high voltage dc bus, such as high-voltage direct current switch device 21,
Break-up device is set on middle pressure DC bus, such as middle pressure DC switchgear 31.Wherein break-up device can be to have arc extinguishing ability point
Disconnected device can also be the disconnecting switch or other break-up devices of arc extinguishing ability, root such as contactor, breaker, electronic power switch
According to needing for bus to be divided into several sections.Such as: when one end of high voltage dc bus 1 is broken down, close high-voltage direct current switch dress
21 are set, at this time isolated fault end, so that the other end operates normally.It should be noted that for the operation of the comprehensive direct current system of train
Safety and reliability improve the failure Ability of emergency management of DC auxiliary power system, therefore in high voltage dc bus, middle straightening
Break-up device is set on stream bus.It can also be needed not making this setting according to train actual motion.
Break-up device provided by the embodiment of the utility model can carry out Fault Isolation in failure, reach train and transport safely
Row effect.
Content based on the above embodiment, as a kind of alternative embodiment: middle piezoelectricity source device passes through circuit topological structure
Export direct current.
Specifically, middle piezoelectricity source device can pass through LLC resonant type soft-switch, phase-shifting full-bridge topology or other circuit topological structures
Export direct current.The utility model embodiment does not make specific limit to circuit topological structure.
The utility model embodiment is by using middle piezoelectricity source device, convenient for the access of train direct current supply, convenient for energy storage
Equipment access accesses convenient for convertible frequency air-conditioner, avoids the harmonic pollution that uncontrollable rectifier equipment generates system.The internet of information
It is mutually merged with the internet of the energy, achieves following intelligent high-speed rail train.
Content based on the above embodiment, as a kind of alternative embodiment: further include: haulage capacity conversion equipment；
Haulage capacity conversion equipment connects high voltage dc bus, for powering for high voltage dc bus.
Specifically, as shown in Figure 1, load of the haulage capacity conversion equipment 23 as high voltage dc bus 1, realize electric energy and
The conversion of mechanical energy provides tractive force or brake force for train.
The utility model embodiment is mentioned power input high voltage dc bus for train by haulage capacity conversion equipment
For tractive force and brake force.
Content based on the above embodiment, as a kind of alternative embodiment: haulage capacity conversion equipment includes: traction inversion
Device and traction electric machine；
Traction electric machine is connected to high voltage dc bus by traction invertor.
1, specifically, as shown in figure 4, Fig. 4 be haulage capacity conversion equipment schematic diagram provided by the embodiment of the utility model,
Haulage capacity conversion equipment 23 includes: traction invertor 231 and traction electric machine 232, and the load as high voltage dc bus 1,
Tractive force or brake force are provided for train.Wherein, traction electric machine 232 is connected to high voltage dc bus by traction invertor 231,
Realize the conversion of electric energy and mechanical energy.Traction invertor 231 can realize the control of tractive force and electricity power processed to traction electric machine 232
System.It should be noted that haulage capacity conversion equipment 23 includes but is not limited to by traction invertor 231 and 232 groups of traction electric machine
At traction device.The quantity of separate unit traction invertor driving motor is not construed as limiting.Traction electric machine type includes but is not limited to
Asynchronous machine, synchronous motor.
The utility model embodiment is converted to the electronic of traction electric machine by traction invertor and is transferred to high straightening
Bus is flowed, 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 1, charger 32 fills between middle pressure DC bus 2 and low-voltage direct bus 3 in figure
DC bus 2 is pressed in the access of motor 32, after the direct current decompression in middle pressure DC bus 2, is powered for low-voltage direct bus 3.
Low-voltage direct bus 3 runs through entire train, loads 41 and 110V battery 42 for 110V and powers.
The utility model embodiment by charger access in press between DC bus and low-voltage direct bus, charger by pair
Direct current in middle pressure DC bus is depressured mode, and directly as the power supply of low-voltage direct bus, conveniently accessible vehicle-mounted energy storage is set
It is standby, the following boosting by low-voltage direct bus is also convenient for as pulling equipment power supply.
Specific embodiment is applied in the utility model to be expounded the principles of the present invention and embodiment, with
The explanation of upper embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for this field
Those skilled in the art, based on the idea of the present invention, there will be changes in the specific implementation manner and application range, comprehensive
Upper described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. a kind of comprehensive direct current system, which is characterized in that the system includes: high voltage dc bus, middle pressure DC bus, high-voltage electricity
Source device, middle piezoelectricity source device；
The comprehensive direct current system is contacted train Alternating Current Power Supply by the high voltage dc bus and medium pressure DC bus
The electric energy of net is transferred to the load of train；
The high-voltage power apparatus is connected with the train Alternating Current Power Supply contact net and the high voltage dc bus, for being to connect
The train load being connected on the high voltage dc bus provides direct current；
Medium pressure power supply device is connected to the high voltage dc bus and medium pressure DC bus, for be connected to middle pressure
The load of the train of DC bus provides direct current.
2. system according to claim 1, which is characterized in that the high-voltage power apparatus includes: Industrial Frequency Transformer, rectification
Device；
It is connected to train Alternating Current Power Supply contact net by the Industrial Frequency Transformer primary side, secondary side is connected to the rectifier,
The output end of the rectifier is connected to the high voltage dc bus, for providing direct current for the load of train.
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 high voltage dc bus confession by medium pressure power supply device
Electricity.
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 connects medium pressure DC bus by the energy storage electrical energy changer, passes through medium pressure power supply
Device is high voltage dc bus power supply.
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.
6. system according to claim 1, which is characterized in that
Medium pressure power supply device exports the direct current by circuit topological structure.
7. system according to claim 1, which is characterized in that further include: haulage capacity conversion equipment；
The haulage capacity conversion equipment connects the high voltage dc bus, for powering for the high voltage dc bus.
8. system according to claim 7, which is characterized in that haulage capacity conversion equipment includes: traction invertor and leads
Draw motor；
The traction electric machine is connected to the high voltage dc bus by the traction invertor.
9. 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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| Application Number | Priority Date | Filing Date | Title |
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| CN201821868698.9U CN208835750U (en) | 2018-11-13 | 2018-11-13 | A kind of comprehensive direct current system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821868698.9U CN208835750U (en) | 2018-11-13 | 2018-11-13 | A kind of comprehensive direct current system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301811A (en) * | 2018-11-13 | 2019-02-01 | 中国铁路总公司 | A kind of comprehensive direct current system |
| CN111509697A (en) * | 2020-05-07 | 2020-08-07 | 北京泓慧国际能源技术发展有限公司 | Subway regenerative braking energy recovery control system and method based on flywheel energy storage array |
| 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 |
-
2018
- 2018-11-13 CN CN201821868698.9U patent/CN208835750U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301811A (en) * | 2018-11-13 | 2019-02-01 | 中国铁路总公司 | A kind of comprehensive direct current system |
| CN111509697A (en) * | 2020-05-07 | 2020-08-07 | 北京泓慧国际能源技术发展有限公司 | Subway regenerative braking energy recovery control system and method based on flywheel energy storage array |
| 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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