CN105882569A - Train alternating current-direct current assisting power source system based on light storage complementarity - Google Patents
Train alternating current-direct current assisting power source system based on light storage complementarity Download PDFInfo
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- CN105882569A CN105882569A CN201510236877.5A CN201510236877A CN105882569A CN 105882569 A CN105882569 A CN 105882569A CN 201510236877 A CN201510236877 A CN 201510236877A CN 105882569 A CN105882569 A CN 105882569A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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Abstract
The invention provides a train alternating current-direct current auxiliary power system based on light storage complementarity. The train alternating current-direct current auxiliary power system consists of a thin film solar battery plate group, an electric energy conversion device, an energy storage accumulator battery group, a battery management system, an alternating current bus, a direct current bus, a grid connection device, a train socket system and an energy management system which are laid at the top of a compartment of a train. According to the train alternating current-direct current auxiliary power system disclosed by the invention, energy is obtained by utilizing the thin film solar battery plate group at the top of the compartment of the train, and the obtained energy is converted to provide an alternating current power source and a direct current power source for the compartment, so that when the train travels, power required by a user is provided; electric energy in the solar battery and the electric energy in the energy storage accumulator battery can be transported to an own power source system of the train; besides, the train alternating current-direct current auxiliary power system disclosed by the invention can also obtain electric energy from the own power source system of the train, and store or utilize the obtained electric energy; the train alternating current-direct current auxiliary power system disclosed by the invention can further provide an emergency spare power supply for the train.
Description
Technical field
The present invention relates to field of photovoltaic power generation, relate to a kind of train alternating current-direct current secondary power system complementary based on light storage.
Background technology
China railways mileage total bit is at the forefront in the world, train sum is huge, and annual transmission passenger is up to tens people, along with the progress of science and technology, the smart machines such as mobile phone, iPad, notebook computer are popularized, and passenger is worried because not having charge power supply the most on the road.But, the power supply that train provides is used primarily in the aspects such as train driving, illumination, air-conditioning, and in addition to the charging inlet that the offer of minority senior compartment is a small amount of, remaining compartment does not all configure power interface, can not meet passenger's need for electricity at all.
Summary of the invention
In order to solve the need for electricity of passenger, the invention provides a kind of train alternating current-direct current secondary power system complementary based on light storage, this system mainly includes following function.
1. system provides DC source and the output interface of alternating current power supply for each compartment, for passenger.
2. system provides and the grid-connecting apparatus of train own power source system, realize being incorporated into the power networks of secondary power system and train own power source system, secondary power system both can input electric energy to train own power source system, reduces the input power of train own power source, reaches energy-conservation purpose；Secondary power system can obtain electric energy from train own power source system again, supplies train jack system or by electrical power storage in accumulator battery.Achieve the two-way flow of energy, improve the reliability of secondary power system.
The most in case of emergency, this secondary power system can be the stand-by power supply that train provides in short-term.
Specifically, the energy source of this accessory power supply is in the thin-film solar cell panel being laid on railway car top, the electric energy of thin-film solar cell panel output preferentially supplies train jack system electricity consumption and accumulator battery, unnecessary electric energy is incorporated in train own power source system by grid-connecting apparatus, the input power in the oil consumption of minimizing diesel locomotive or pantograph.In case of emergency, stopping the power supply of train jack system, the electric energy of the storage in the electric energy exported by solar panel and energy storage battery group is incorporated in train as stand-by power supply, maintains the power supply of train a period of time.Additionally, when sun-generated electric power and the exportable power of accumulator battery are close to 0, secondary power system also can obtain electric energy supply train jack system from train own power source system and use, it is also possible to the electrical power storage obtained in energy storage battery group.
Fig. 1 is the schematic appearance in the train joint compartment being mounted with thin-film solar cell panel.
Wherein, 28 is the external structure in compartment, and car body is rectangular-shaped, and car body top is curved.29 thin-film solar cell panels being mounted in roof, it is clear that thin-film solar cell panel mounting means from figure, profile and the roof profile of thin-film solar cell panel are completely the same, present arc, cell panel profile adapts to the contour structures of roof completely, being close to roof, this configuration design and mounting means meet the streamlined line discipline design of train, train will not be produced additional friction in train operation.The mounting means of polylith thin-film solar cell panel can also be clearly visible that, they parallel longitudinal layouts from figure.
Fig. 2 is the system construction drawing of the present invention.
System is made up of the thin-film solar cell panel group 1 being laid on railway car top, electrical energy changer 2, energy storage battery group 8, battery management system 27, ac bus 13, dc bus 12, grid-connecting apparatus 5, train jack system 3 and EMS 11.
Wherein electric power conversion apparatus 2 includes: DC-DC device 6, bi-directional DC-DC device 7, direct current output DC-DC device 9, single phase ac output DC-AC device 10；Grid-connecting apparatus 5 includes net-connected controller 22, two-way grid-connected converter 21 and grid-connected switch 25；Train jack system 3 includes the jack system in each joint compartment, and often the jack system configuration of joint compartment is the most identical, and compartment jack system 18 includes: direct current overcurrent protective switch 14, AC overcurrent protection switch 15, direct current output USB 15, AC single phase socket 17.
System structure and operation principle are as follows:
The thin-film solar cell panel group 1 at train top, is formed by polylith thin-film solar cell panel series and parallel.Wherein the cell panel mounting means at train top is: thin-film solar cell panel profile is identical with car body top, adapts to the contour structures of roof completely, curved, is close to car body top and fixes；Polylith thin-film solar cell panel uses the mode that side by side parallel is arranged.A polylith thin-film solar cell panel battery substring in series of the thin-film solar cell panel group 1 at train top, a train can be arranged multiple battery substring, then be connected in parallel on bus rod 26 by all battery substrings of car body top.
Electric power conversion apparatus 2 includes: DC-DC device 6, bi-directional DC-DC device 7, direct current output DC-DC device 9, single phase ac output DC-AC device 10.Wherein the input side of device 6 connects bus rod 26, and outlet side is connected node 20,6 and realized the maximum power output of thin-film solar cell panel group 1 by MPPT algorithm, and controls the voltage of node 20 in rated range；Device 7 side connects node 20, and opposite side connects energy storage battery group 8, and device 7 is according to the instruction of EMS 11, to 8 charge or discharge；Device 9 input side connects node 20, and outlet side connects dc bus 12, and device 9 starts or stops to DC bus powered according to the instruction of 11；Device 10 input side connects node 20, and outlet side connects ac bus 13, and device 10 starts or stops according to the instruction of 11 and powers to ac bus.
Energy storage battery group 8 is consisted of series-parallel mode a number of accumulator, energy storage battery group 8 is placed in the space do not concentrated due to train itself, therefore energy storage battery group 8 uses distributed way at the energy storage battery often saving compartment installation certain capacity, they carry out connection in series-parallel according to the requirement of electric pressure and stored energy capacitance, connect the outlet side of DC-DC device 7 eventually through bus rod；Battery management system 27 is responsible for being monitored and controlled the duty of each accumulator in energy storage battery group 8, the most also can exchange data with EMS 11.
Dc bus 12 attachment means 9, provides DC source for each compartment, and equipped with voltage sensor on 12,11 can gather voltage data on 12.Ac bus 13 attachment means 10, provides single phase alternating current power supply for each compartment, and equipped with voltage sensor on 13,11 can gather voltage data on 13.
Train jack system 3 includes the jack system in each compartment of train; the configuration of the jack system in each compartment is the most identical; compartment jack system 18 includes: direct current overcurrent protective switch 14, AC overcurrent protection switch 16, direct current output USB 15, AC single phase socket 17.Direct current overcurrent protective switch 14 side connects dc bus 12, and opposite side connects USB 15,15 and provides the user direct current output USB.AC overcurrent protection switch 16 side connects ac bus 13, and opposite side connects AC single phase socket 17,17 and provides the user exchange accessory power outlet.Multiple USB and AC single phase socket is had in 18.
Grid-connecting apparatus 5 includes: two-way grid-connected converter 21, grid-connected switch 25, net-connected controller 22, and the most two-way grid-connected converter 21 side connects node 20, and opposite side connects node 25；Grid-connected switch 25 side connects node 21, and opposite side connects and site 24；Net-connected controller 22 controls the mode of operation of 21 and 25 according to the instruction of 11, it is achieved secondary power system and the energy in bidirectional flow of train electrical origin system.
EMS 11 gathers the information of 27, it is thus achieved that the SOC information of 8；11 gather and the voltage of site 24, the information of module 6, dc bus 12 and the output of the voltage of ac bus 13,9 and 10, compare according to the data collected and judge, controlling the work of 6,7,9,10,22.
Under normal circumstances, solar panel 1 is that output only supplies compartment jack system, and the electric energy of i.e. 1 output supplies train jack system through device 9 and 10, putting the control strategy to following situation is before this:
If the voltage of dc bus 12 and ac bus 13 is in the respective range of nominal tension and 1 peak power that currently can export is more than total electric power of train jack system, then 11 send instruction to 7, make device 7 to 8 chargings, if the SOC of energy storage battery group 8 reaches 100%, then 11 sending instruction to 22,22 control 21 and 25 is transported to the excess power in secondary power system in train own power source system.
If the voltage of dc bus 12 and ac bus 13 is in the respective range of nominal tension and 1 peak power that currently can export is equal to total electric power of train jack system, then 11 send instruction arresting stop 7 to the charging of accumulator battery 8 to 7；11 sending instruction to 22,22 control 21 and 25 disconnects secondary power system and train own power source system simultaneously.
If the voltage of dc bus 12 or ac bus 13 has reached maximum less than the power of the respective range of nominal tension and 1 output, illustrate that underpower that current solar panel group 1 exports is to meet system electricity consumption, therefore 11 instruction is sent to 7, control device 7 to discharge to accumulator battery 8, make bus 12 and 13 voltage stabilization in the respective range of nominal tension；If 8 in electric discharge, but the S0C value of 8 less than 10% or 12,13 voltage the most not in the respective range of nominal tension, then 11 send instruction to 22,22 control 21 and 25 is transported to the electric energy in train own power source system in secondary power system, the jack system electricity consumption in supply compartment, so that bus 12 and 13 voltage stabilization is in the respective range of nominal tension, 11 also can send instruction to 7 in addition, device 7 may utilize the electric energy of train own power source system to 8 chargings in secondary power system.
If 11 detect that also site 24 voltage is less than the rated voltage of train own power source system, then 11 send instruction to 9 and 10, stop 9 and 10 and work；11 send instruction to 7, make device 7 to 8 electric discharges；11 send instruction to device 22,22 control 21 and 25 is transported to the electric energy in secondary power system in train own power source system, realizing thin-film solar cell panel 1 and accumulator battery 8 delivers the power in train own power source system in the way of maximum power output, secondary power system provides stand-by power supply in short-term for train.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, can more completely be more fully understood that the present invention, and easily learn the advantage that many of which is adjoint, but accompanying drawing described herein is used for providing a further understanding of the present invention, constituting the part of the present invention, the schematic description and description of the present invention is used for explaining the present invention, it is not intended that inappropriate limitation of the present invention, wherein:
Fig. 1 is the schematic appearance in the train joint compartment being mounted with thin-film solar cell panel
Fig. 2 is the system construction drawing of the present invention.
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Detailed description of the invention
Obviously, the many modifications and variations that those skilled in the art are done based on spirit of the invention belong to protection scope of the present invention.
Embodiment:
As in figure 2 it is shown, system includes: be laid on the thin-film solar cell panel group 1 at railway car top, electrical energy changer 2, energy storage battery group 8 and battery management system 27, ac bus 13, dc bus 12, grid-connecting apparatus 5, train jack system 3 and EMS 11.
In actually used, the mounting means of thin-film solar cell panel 1 such as Fig. 1 shows, selects one block of relatively conventional flexible thin-film solar cell plate: 1080mm * 790mm * 2mm, voltage 12V, peak power 150 W, two pieces of cell panel series connection to obtain 24V battery substring.The compartment number of a usual train is 16～20 joints, the size about 25m*3m*4m in a usual joint compartment, then about 27 battery substrings can be laid in a joint compartment, taking the compartment number that train can lay solar panel is 16, then a train can spread 432 battery substrings altogether, and solar panel is output as 24V about 64.8kW.
The voltage controlling node 20 is 48V, bi-directional DC-DC device 7 is 24V to the charging voltage of accumulator battery 8, direct current output DC-DC device 9 exports 5V DC voltage, makes dc bus 12 voltage stabilization, and DC-AC device 10 exports 220V alternating voltage and makes ac bus 13 voltage stabilization.
Two-way grid-connected converter 21 is made up of four quadrant convertor, and according to 11 instructions sent, 22 control 21 mode of operations, it is achieved secondary power system and the energy in bidirectional flow of train own power source system.
Train jack system 3 includes: the jack system in each joint compartment, the jack system configuration in each joint compartment is the most identical, USB in each jack system obtains voltage output direct current 5V from dc bus 12, and single phase ac socket obtains voltage output single-phase 220V exchange from ac bus 13.In railway car: 2 USB and 2 single-phase alternating current supply sockets constitute an insert row, 20 insert rows are installed in a compartment.Overcurrent protective switch 14 and 16 is separately mounted to the total input-wire position of socket, each installation 1.
When system is run, EMS 11 gathers the information of 27, it is thus achieved that the SOC information of 8；11 gather and the voltage of site 24, the information of module 6, dc bus 12 and the output of the voltage of ac bus 13,9 and 10, compare according to the data collected and judge, controlling the mode of operation of 6,7,9,10,22.
Under normal circumstances, thin-film solar cell panel group 1 output only supplies compartment jack system, putting the control strategy to following situation is before this:
If in rated range 218～222V and the peak power that currently can export of solar panel group 1 is more than total electric power of train jack system for the voltage that the voltage of dc bus 12 is equal to 5V, ac bus 13, then 11 charge to accumulator battery 8 to 7 transmission charging instruction, until the SOC value of 8 arrives 100%.If the SOC value of 8 arrives 100%, 11 send instruction to 7 stops the charging of 8,11 send instruction to 22 simultaneously, 22 control 21 and 25 is transported to the excess power in secondary power system in train own power source system, i.e. remaining for solar panel power is input in train own power source system, for train, thus decrease the input power of train own power source, reach energy-conservation purpose.
If in rated range 218～222V and the peak power that currently can export of solar panel group 1 is equal to total electric power of train jack system for the voltage that the voltage of dc bus 12 is equal to 5V, ac bus 13, then 11 sends instruction to 7 and stop the charge or discharge of accumulator batteries 8.11 sending instruction to 22,22 control 21 and 25 disconnects secondary power system and train own power source system simultaneously.
If the voltage of dc bus 12 is less than 218V less than the voltage of 5V or ac bus 13, and the power of solar panel group 1 output has reached maximum, illustrate that underpower that current solar panel group 1 exports is to meet system electricity consumption, therefore 11 discharge to accumulator battery 8 to 7 transmission electric discharge instructions, make bus 12 and 13 voltage stabilization in the respective range of nominal tension；If 8 in electric discharge, but the S0C value of 8 less than 10% or 12,13 voltage the most not in the respective range of nominal tension, then 11 send instruction to 22,22 control 21 and 25, electric energy in train own power source system is transported in secondary power system, so that bus 12 and 13 voltage stabilization is in the respective range of nominal tension；In addition 11 also can send charging instruction to 7, utilize the electric energy of train own power source system to charge to the energy storage battery group 8 in secondary power system.
If 11 detect that also site 24 voltage is less than the rated voltage of train own power source system, 11 send electric discharge instruction to 7 discharges to accumulator battery 8；11 send instruction to 22, and 22 control 21 and 25, and the electric energy stored in electric energy solar panel group 1 exported and energy storage battery group 8 is transported in train own power source system in the way of maximum power output, provide instantaneous stand-by power supply for train.
Above a kind of train alternating current-direct current secondary power system complementary based on light storage provided by the present invention is described in detail, above by reference to accompanying drawing, the exemplary embodiment of the application is described.Those skilled in the art should understand that; purpose that the embodiment above is merely to illustrate that and the example lifted; rather than be used for limiting; all made under teachings of the present application and claims any amendment, equivalent etc., should be included in this application claims in the range of.
Claims (13)
1. one kind based on the complementary train alternating current-direct current secondary power system of light storage, it is characterised in that: include a set of being laid on the thin-film solar cell panel group 1 at train top, electric power conversion apparatus 2, energy storage battery group 8, battery management system 27, dc bus 12, ac bus 13, grid-connecting apparatus 5, train jack system 3 and EMS 11；Wherein electric power conversion apparatus 2 includes: DC-DC device 6, bi-directional DC-DC device 7, direct current output DC-DC device 9, single phase ac output DC-AC device 10；Grid-connecting apparatus 5 includes: net-connected controller 22, two-way grid-connected converter 21 and grid-connected switch 25；Train jack system 3 includes: the jack system in each joint compartment; often the jack system configuration of joint compartment is the most identical, and compartment jack system 18 includes: direct current overcurrent protective switch 14, AC overcurrent protection switch 15, direct current output USB 15, AC single phase socket 17.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterised in that: the thin-film solar cell panel group 1 at train top is formed by polylith thin-film solar cell panel series and parallel；Wherein the cell panel mounting means at train top is: thin-film solar cell panel profile is identical with car body top, adapts to the contour structures of roof completely, curved, is close to car body top and fixes；Polylith thin-film solar cell panel uses the mode that side by side parallel is arranged.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterized in that: a polylith thin-film solar cell panel battery substring in series of the thin-film solar cell panel group 1 at train top, multiple battery substring can be arranged on a time train, more all battery substrings of car body top are connected in parallel on bus rod 26.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterised in that: electric power conversion apparatus 2 includes: DC-DC device 6, bi-directional DC-DC device 7, direct current output DC-DC device 9, single phase ac output DC-AC device 10；Wherein the input side of device 6 connects bus rod 26, and outlet side is connected node 20,6 and realized the maximum power output of thin-film solar cell panel group 1 by MPPT algorithm, and controls the voltage of node 20 in rated range；Device 7 side connects node 20, and opposite side connects energy storage battery group 8, and device 7 is according to the instruction of EMS 11, to 8 charge or discharge；Device 9 input side connects node 20, and outlet side connects dc bus 12, and device 9 starts or stops to DC bus powered according to the instruction of 11；Device 10 input side connects node 20, and outlet side connects ac bus 13, and device 10 starts or stops according to the instruction of 11 and powers to ac bus.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterized in that: energy storage battery group 8 is consisted of series-parallel mode a number of accumulator, energy storage battery group 8 is placed in the space do not concentrated due to train itself, therefore energy storage battery group 8 uses distributed way at the energy storage battery often saving compartment installation certain capacity, they carry out connection in series-parallel according to the requirement of electric pressure and stored energy capacitance, connect the outlet side of DC-DC device 7 eventually through bus rod；Battery management system 27 is responsible for being monitored and controlled the duty of each accumulator in energy storage battery group 8, the most also can exchange data with EMS 11.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterised in that: dc bus 12 attachment means 9, provide DC source for each compartment, equipped with voltage sensor on 12,11 can gather voltage data on 12；Ac bus 13 attachment means 10, provides single phase alternating current power supply for each compartment, and equipped with voltage sensor on 13,11 can gather voltage data on 13.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1; it is characterized in that: train jack system 3 includes: the jack system in each compartment of train; the configuration of the jack system in each compartment is the most identical; compartment jack system 18 includes: direct current overcurrent protective switch 14, AC overcurrent protection switch 16; direct current output USB 15, AC single phase socket 17；14 sides connect dc bus 12, and opposite side connects USB 15；16 sides connect ac bus 13, and opposite side connects AC single phase socket 17；Multiple direct current output USB and AC single phase socket is had in 18.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterized in that: grid-connecting apparatus 5 includes: two-way grid-connected converter 21, grid-connected switch 25, net-connected controller 22, the most two-way grid-connected converter 21 side connects node 20, and opposite side connects node 25；Grid-connected switch 25 side connects node 21, and opposite side connects and site 24；Net-connected controller 22 controls the mode of operation of 21 and 25 according to the instruction of 11, it is achieved secondary power system and the energy in bidirectional flow of train electrical origin system.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterized in that: EMS 11 gathers the information of 6,7,9,10,12,13,24,27, control the work of 6,7,9,10,22 according to the information collected.
The train alternating current-direct current secondary power system complementary based on light storage the most according to claim 1, it is characterised in that: the power of thin-film solar cell panel group 1 output preferentially supplies compartment jack system 3 and uses, the most preferentially supply 9 and 10；EMS 11 gathers output general power, the output of 1 and MPPT information, the SOC(dump energy of 8 of 9 and 10), 12 and 13 information of voltage compare judgement, if the voltage of 12 and 13 in the respective range of nominal tension and 1 also have excess power fan-out capability, then 11 send instruction to 7, make device 7 to 8 chargings, if the SOC of energy storage battery group 8 arrives 100%, then 11 sending instruction to 22,22 control 21 and 25 is transported to the excess power in secondary power system in train own power source system.
The 11. train alternating current-direct current secondary power systems complementary based on light storage according to claim 1, it is characterized in that: if the power of 1 output is the least even close to 0, then 11 send instruction to 7, device 7 is made to be operated in the discharge mode of energy storage battery 8, the electric energy supply train jack system 3 stored 8 li；If the voltage of dc bus 12 and ac bus 13 is not the most in the respective range of nominal tension, then 11 sending instruction to 22,22 control 21 and 25 is transported to the electric energy in train own power source system in secondary power system, supplies train jack system electricity consumption.
The 12. train alternating current-direct current secondary power systems complementary based on light storage according to claim 1, it is characterized in that: EMS 11 gathers and the voltage of site 24 compares judgement, if the voltage of 24 is less than the rated voltage of train own power source system, secondary power system is using the power supply of the emergency power supply maintenance train a period of time as train；11 send instruction to 9 and 10, stop 9 and 10 work；11 send instruction to 7, make device 7 be operated in the discharge mode of energy storage battery 8；11 send instruction to device 22, and 22 control 21 and 25 is transported to the electric energy in secondary power system in train own power source system；The mode of thin-film solar cell panel 1 and accumulator battery 8 maximum power output delivers the power in train own power source system.
The 13. train alternating current-direct current secondary power systems complementary based on light storage according to claim 1, it is characterized in that: EMS 11 can send instruction to 22,22 control 21 and 25 is transported to the electric energy in train own power source system in secondary power system, 11 send instruction to 7, device 7 is made to charge to 8, can be the electrical power storage being input in secondary power system from train own power source system in 8.
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| CN106828123B (en) * | 2017-02-10 | 2023-04-07 | 西南交通大学 | High-speed railway traction power supply system with distributed photovoltaic power supply and control method |
| CN109239536A (en) * | 2017-07-10 | 2019-01-18 | 比亚迪股份有限公司 | The Insulation Inspection System of train and train |
| CN109412216A (en) * | 2017-08-16 | 2019-03-01 | 比亚迪股份有限公司 | Train and its vehicle-mounted charging device |
| CN108808818A (en) * | 2018-06-20 | 2018-11-13 | 中国能源建设集团甘肃省电力设计院有限公司 | A kind of facility powered for train and maintenance gang house using photovoltaic generation and energy storage device |
| CN113752834A (en) * | 2020-06-03 | 2021-12-07 | 株洲中车时代电气股份有限公司 | Train self-powered system and method and train |
| DE102022113348A1 (en) | 2022-05-25 | 2023-11-30 | Wilhelm Seifermann | Mobile solar power plants for feeding electricity into rail transport and/or storing electricity |
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|---|---|
| CN105882569B (en) | 2018-03-06 |
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