CN209454733U - A kind of EMU bidirectional power supply circuit and EMU - Google Patents
A kind of EMU bidirectional power supply circuit and EMU Download PDFInfo
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- CN209454733U CN209454733U CN201920157128.7U CN201920157128U CN209454733U CN 209454733 U CN209454733 U CN 209454733U CN 201920157128 U CN201920157128 U CN 201920157128U CN 209454733 U CN209454733 U CN 209454733U
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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
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
A kind of EMU bidirectional power supply circuit and EMU, circuit include: two-way AC-DC converter, and the first end of two-way AC-DC converter is connected with the ac bus of EMU, second end is connected with the power accumulator of EMU；DC-DC converter, the input terminal of DC-DC converter is connected with the second end of two-way AC-DC converter, output end is connected with the DC bus of motor-car；Power accumulator, the power supply interface of power accumulator are connected with the DC bus of traction convertor in the second end of two-way AC-DC converter and EMU power supply system respectively；The first control switch between the first end and ac bus of two-way AC-DC converter is set；The second control switch between the power supply interface of power accumulator and the input terminal of DC-DC converter is set；Third control switch between DC bus in the power supply interface and traction convertor of power accumulator is set, is realized in the case where grid cut-off, driving EMU is advanced.
Description
Technical field
The utility model relates to electrical equipment technical fields, and in particular to a kind of EMU bidirectional power supply circuit and motor-car
Group.
Background technique
In the prior art EMU using the high-voltage electricity in power grid as power source, after grid cut-off, EMU without
Middle pressure, EMU runs out of steam, and source is out of service, and original place waits for rescue, and charger is shut down.
EMU can not advance after how solving the problem of grid cut-off, and it is urgently to be resolved to become those skilled in the art
One of the technical issues of.
Utility model content
In view of this, the utility model embodiment provides a kind of EMU bidirectional power supply circuit and EMU, it is dynamic to improve
The utilization efficiency of the power accumulator of EMU in vehicle.
To achieve the above object, the utility model embodiment provides the following technical solutions:
A kind of EMU bidirectional power supply circuit is applied in EMU power supply system, comprising:
Two-way AC-DC converter, the ac bus phase of the first end and EMU of the two-way AC-DC converter
Even, the second end of the two-way AC-DC converter is connected with the power accumulator of EMU；
DC-DC converter, the second end phase of the input terminal of the DC-DC converter and the two-way AC-DC converter
Even, the output end of the DC-DC converter is connected with the DC bus of motor-car；
Power accumulator, the power supply interface of the power accumulator respectively with the two-way AC-DC converter second
The DC bus of traction convertor is connected in end and EMU power supply system；
The first control switch between the first end and the ac bus of the two-way AC-DC converter is set；
The second control between the power supply interface of the power accumulator and the input terminal of the DC-DC converter is set
Switch；
Third between DC bus in the power supply interface and the traction convertor of the power accumulator is set
Control switch.
Preferably, in above-mentioned EMU bidirectional power supply circuit, further includes:
The low tension battery that charging interface is connected with the output end of the DC-DC converter.
Preferably, in above-mentioned EMU bidirectional power supply circuit, further includes:
Diode, the output end of the anode of the diode and the DC-DC converter and the low tension battery
Charging interface is connected, and cathode is connected with the DC bus of the motor-car.
Preferably, in above-mentioned EMU bidirectional power supply circuit, the two-way AC-DC converter, comprising: first is two-way
AC-DC stream transformer and the second two-way AC-DC stream transformer；
The DC-DC converter includes: the first DC-DC converter and the second DC-DC converter；
The first two-way AC-DC stream transformer and first DC-DC converter series connection, constitute the first series arm；
The second two-way AC-DC stream transformer and second DC-DC converter series connection, constitute the second series arm；
First series arm and the second series arm are in parallel.
Preferably, in above-mentioned EMU bidirectional power supply circuit, the first two-way AC-DC stream transformer and second two-way
AC-DC stream transformer is using two-shipper cold standby or the set-up mode of two-node cluster hot backup.
Preferably, in above-mentioned EMU bidirectional power supply circuit, further includes:
For controlling the first control button of the on off operating mode of the first control switch；
For controlling the second control button of the on off operating mode of the second control switch；
For controlling the third control button of the on off operating mode of third control switch.
Preferably, in above-mentioned EMU bidirectional power supply circuit, first control button, the second control button and third control
Key processed is set on EMU operating platform.
A kind of EMU, configured with EMU described in an above-mentioned any one in each compartment in the EMU
Bidirectional power supply circuit.
Preferably, in above-mentioned EMU, the DC bus of the EMU includes:
First DC bus, the second DC bus and third DC bus, first DC bus, the second DC bus
DC bus with third DC bus as EMU；
First contactor on first DC bus is set；
Second contactor on second DC bus is set.
Preferably, in above-mentioned EMU, further includes:
For controlling the 4th control button of the on off operating mode of first contactor；
For controlling the 5th control button of the on off operating mode of second contactor；
4th control button and the 5th control button are set on EMU operating platform.
Based on the above-mentioned technical proposal, above scheme provided by the embodiment of the utility model, when grid cut-off, the traction
Current transformer input terminal no current flows into, at this point, EMU controls the third control switch and close if there is the demand for continuing to travel
It closes, access between the power accumulator and the DC bus of the traction convertor, power accumulator discharges electric energy to described
On the DC bus of traction convertor, with the DC-DC converter that is connected of driving traction electric machine by power in the traction convertor
The releasable electric energy of battery release electricity is sent to the traction drive motor after carrying out inversion, at this point, the traction drive is electric
Machine obtains electricity operation, and EMU is driven to continue to travel.
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 the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of structural schematic diagram of EMU bidirectional power supply circuit disclosed in the embodiment of the present application；
Fig. 2 is a kind of structural schematic diagram of EMU bidirectional power supply circuit disclosed in another embodiment of the application；
Fig. 3 is a kind of operating condition schematic diagram of EMU bidirectional power supply circuit disclosed in another embodiment of the application；
Fig. 4 is a kind of operating condition schematic diagram of EMU bidirectional power supply circuit disclosed in another embodiment of the application；
Fig. 5 is a kind of operating condition schematic diagram of EMU bidirectional power supply circuit disclosed in another embodiment of the application；
Fig. 6 is a kind of operating condition schematic diagram of EMU bidirectional power supply circuit disclosed in another embodiment of the application；
Fig. 7 is a kind of structural schematic diagram of EMU bidirectional power supply circuit disclosed in another embodiment of the application.
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.
It is directed to the low problem of the power accumulator utilization efficiency of EMU in the prior art, it is dynamic that this application discloses one kind
Vehicle group bidirectional power supply circuit, referring to Fig. 1, which may include:
Two-way AC-DC converter 100, DC-DC converter 200 and power accumulator 300；
The first end of the two-way AC-DC converter 100 is connected with the ac bus of EMU, and the two-way friendship-is straight
The second end of stream transformer 100 is connected with the power accumulator 300 of EMU, and the DC bus of the EMU refers to motor-car
Bus in group for powering to AC electric equipment, these AC electric equipments such as cooling blower, cooling pump, main air compressor machine
And air-conditioner set etc.；
The input terminal of the DC-DC converter 200 is connected with the second end of the two-way AC-DC converter 100, described
The output end of DC-DC converter 200 is connected with the DC bus of motor-car, and the DC bus of the EMU refers in EMU
Bus for powering to direct-flow electricity utilization apparatus；
The power supply interface of the power accumulator 300 respectively with the second end of the two-way AC-DC converter 100 and
The DC bus of traction convertor 0 is connected in EMU power supply system, wherein in EMU power supply system, the traction becomes
The input terminal of stream device 0 is connected with power grid, the first output end is connected with the driving traction electric machine of EMU, second output terminal and motor-car
Ac bus be connected, the input end of traction convertor 0 is provided with unidirectional AC-DC converter, the first output end and second defeated
It is respectively arranged with a DC-DC converter at outlet, passes through direct current between the unidirectional AC-DC converter and DC-DC converter
Bus is connected, and the alternating current that power grid exports is converted into being loaded into its DC bus after direct current by the unidirectional AC-DC converter
On, after the DC-DC converter will carry out inversion by the direct current got on the DC bus again, export alternating current extremely respectively
It drives on traction electric machine and the ac bus of EMU；
The first control being arranged between the first end and the ac bus of the two-way AC-DC converter 100 is opened
Close K1；
It is arranged between the power supply interface of the power accumulator 300 and the input terminal of the DC-DC converter 200
Two control switch K2；
It is arranged between the DC bus in the power supply interface and the traction convertor 0 of the power accumulator 300
Third control switch K3.
The course of work of EMU bidirectional power supply circuit disclosed in the embodiment of the present application is illustrated below:
When power grid has electricity, the first control switch K1, the second control switch K2 and third control switch K3 are in normal
Closed state, described in grid cut-off, the first control switch K1, the second control switch K2 and third control switch K3 are disconnected
It opens.
Referring to fig. 2, when power grid has electricity, the first control switch K1 and the second control switch K2 closure, control are controlled
The third control switch K3 is disconnected, at this point, described give driving traction electricity by power network current after the processing of traction convertor 0
Ac bus and the two-way AC-DC converter 100 on machine, motor-car are powered；
When grid cut-off, the first control switch K1, the second control switch K2 and third control switch K3 are disconnected, ginseng
See Fig. 3, no current in the EMU bidirectional power supply circuit.
When grid cut-off, and when the dynamic demand of EMU, referring to fig. 4, the third control switch K3 closure is controlled,
Access between the power accumulator 300 and the DC bus of the traction convertor 0, power accumulator 300 discharge electric energy extremely
On the DC bus of the traction convertor 0, in the traction convertor 0 with the DC-DC converter that is connected of driving traction electric machine
Power accumulator 300 is discharged after the releasable electric energy of electricity carries out inversion and is sent to the traction drive motor, at this point, described lead
Draw driving motor and obtain electricity operation, EMU is driven to continue to travel；
When grid cut-off, and when the DC bus of motor-car there are current needs, referring to Fig. 5, controls second control and opens
K2 conducting is closed, at this time the current situation of the EMU bidirectional power supply circuit are as follows: 300 release current of power accumulator is released
The electric current of releasing flows into the DC-DC converter 200 through the second control switch K2, converts through the DC-DC converter 200
The DC bus of the EMU is flowed into afterwards；
When grid cut-off, and when the ac bus of motor-car there are current needs, referring to Fig. 6, controls first control and opens
K1 and the second control switch K2 conducting is closed, at this time the current situation of the EMU bidirectional power supply circuit are as follows: the power electric power storage
300 release current of pond, the electric current released flow into two-way 100 He of AC-DC converter through the second control switch K2
DC-DC converter 200 flows into the ac bus of motor-car, through the DC-DC after the two-way AC-DC converter 100 is converted
Converter 200 flows into the DC bus of the EMU after converting；
By the above-mentioned course of work as it can be seen that EMU bidirectional power supply circuit disclosed in the above embodiments of the present application, realizes
It is small the grid cut-off the case where, guarantee that EMU can continue to travel, and, it can also be ensured that the direct current electricity consumption in EMU is set
Standby, AC electric equipment being capable of normal use.
Two-way AC-DC converter 100, DC-DC converter 200 and power accumulator disclosed in the above embodiments of the present application
300 can integrate in same housing, which is divided into three cavitys being mutually communicated by wiring hole, and two-way friendship-is straight
Stream transformer 100, DC-DC converter 200 and power accumulator 300 are located in different cavitys, and opposite in the shell
Two sides on be provided with ventilation hole, be provided with radiator fan on one of ventilation hole.
Further, disclosed in the embodiment of the present application in technical solution, the two-way AC-DC converter 100, DC-
The type of DC converter 200 can be according to user demand sets itself, for example, the technical solution disclosed in the embodiment of the present application
In, the two-way AC-DC converter 100 can be controllable three-phase full bridge converters, and the DC-DC converter 200 can be
Phase-shifted full-bridge converter, disclosed in the embodiment of the present application in technical solution, the two-way AC-DC converter 100 is specifically used
In the high voltage direct current that AC380V in ac bus is transformed to DC 650V, the DC-DC converter 200 is used for two-way friendship-
The DC 650V high voltage direct current that direct current transducer 100 exports is reduced to DC 110V low-voltage DC, and is output to the straight of EMU
It flows on bus.
Further, disclosed in apply for embodiment in technical solution, the rated output voltage of the power accumulator 300
DC634V。
Further, disclosed in the embodiment of the present application in technical solution, in order to guarantee the two-way AC-DC converter
100 and DC-DC converter 200 reliability, the two-way AC-DC converter 100 and DC-DC converter 200 can use
Dual redundant design method, that is, there are two two-way AC-DC conversion module, institutes for setting in the two-way AC-DC converter 100
Stating setting in DC-DC converter 200, there are two DC-DC conversion modules, also, between the two two-way AC-DC conversion modules
Using two-shipper cold standby or the design method of two-node cluster hot backup, so that being opened when one of them two-way AC-DC conversion module failure
Move another two-way AC-DC conversion module, wherein two-shipper cold standby refers to that the two-way AC-DC conversion module of Dang Yitai occurs
After failure is out of service, automatically switches to another two-way AC-DC conversion module and use, and two-shipper cold standby then needs manually to cut
Change to another two-way AC-DC modulus of conversion.
The two-way AC-DC conversion module refers to two-way AC-DC stream transformer, and-Fig. 6, described two-way referring to fig. 2
AC-DC converter 100, comprising: the first two-way AC-DC stream transformer 110 and the second two-way AC-DC stream transformer 120；
The DC-DC converter 200 includes: the first DC-DC converter 210 and the second DC-DC converter 220；
The first two-way AC-DC stream transformer 110 and first DC-DC converter 210 series connection, constitute the first series connection
Branch；
The second two-way AC-DC stream transformer 120 and second DC-DC converter 220 series connection, constitute the second series connection
Branch；
First series arm and the second series arm are in parallel；
Also, positive and the described first two-way AC-DC stream transformer 110 of the power supply interface of the power accumulator 300,
The positive output end of second two-way AC-DC stream transformer 120 is connected, the cathode of the power supply interface of the power accumulator 300 and institute
State the first two-way AC-DC stream transformer 110, the negative output terminal of the second two-way AC-DC stream transformer 120 is connected.
It further, can also include low pressure electric power storage in technical solution disclosed in the above embodiments of the present application referring to Fig. 7
Pond 400, the low tension battery are DC110V battery, fill energy by the electric current that the DC-DC converter 300 exports, when
When the DC bus no current of EMU, discharge on DC100V electric energy to the DC bus of the EMU.
Further, disclosed in the embodiment of the present application in technical solution, due to when driving EMU by battery,
Required electric energy is very big, and therefore, the EMU bidirectional power supply circuit of the above embodiments of the present application setting may include multiple
Power accumulator 300 and low tension battery 400, also, an EMU bidirectional power supply electricity is set in each motor train compartment
Road, and a power accumulator 300 and low 2 low tension batteries 400 are included at least in each EMU bidirectional power supply circuit；
Further, due to each compartment the DC-DC converter 300 output end connection be same DC bus, in order to
It prevents current flowing backwards, can also include: that filling for the low tension battery is set in technical solution disclosed in the embodiment of the present application
Electrical interface be connected with the DC bus of the motor-car between diode, the anode of the diode and the DC-DC converter
The charging interface of 200 output end and the low tension battery 400 is connected, and cathode is connected with the DC bus of the motor-car,
To prevent the current flowing backwards in DC bus to the low tension battery 400 and DC-DC converter 200.For example, with reference to figure
2- Fig. 7, the diode include first diode D1 and the second diode D2, the first diode D1 and the first DC-
The positive output end of DC converter 210 and the anode of low tension battery 400 are connected, the DC bus phase of cathode and the EMU
Even, the second diode D2 and the positive output end of second DC-DC converter 220 and the anode of low tension battery 400
It is connected, cathode is connected with the DC bus of the EMU.
Further, for convenience to the first control switch K1, the second control switch K2 and third control switch K3
It is controlled, in technical solution disclosed in the above embodiments of the present application, is additionally provided with for the first control switch K1,
The first control button that the working condition of two control switch K2 and third control switch K3 are controlled, the second control button and
Three control buttons, first control button are used to control the on off operating mode of the first control switch, and second control button is used
In the on off operating mode for controlling the second control switch, the third control button is used to control the on off operating mode of third control switch,
And the work of the first control switch K1, the second control switch K2 and third control switch K3 are controlled in order to facilitate crew
Make state, first control button, the second control button and third control button can be set on EMU operating platform.
In addition to using control button to the first control switch K1, the second control switch K2 and third control switch K3 into
Except the mode that row controls respectively, the application can also be by controller to the first control switch K1, the second control switch
K2 and third control switch K3 carries out whole control, for example, being opened by controller the first control switch K1, the second control
It closes K2 and third control switch K3 and carries out whole control, at this point, can be according to the Working mould of the circuit on the switch controller
Formula demand is configured with multiple operation keys, and each Operation switch directly controls first control switch, the second control switch and the
Three control switches enter a specific operating mode, open for example, the first Operation switch can directly control first control
It closes and third control switch disconnects, by the second control switch on state；Second Operation switch can control described
Third control switch disconnects, first control switch and the second control switch on state, and the third Operation switch can be with
It directly controls the first control switch, the second control switch and third control switch and is switched on state.
Corresponding to above-mentioned EMU bidirectional power supply circuit, disclosed herein as well is a kind of above-mentioned EMU bidirectional power supplies of application
The EMU of circuit has multiple compartments in the EMU, and one the application of configuration is above-mentioned any one each compartment in
EMU bidirectional power supply circuit described in item embodiment.
Further, disclosed in the embodiment of the present application in technical solution, the bus of EMU breaks down in order to prevent,
And the problem of influencing EMU operation, in above-mentioned technical proposal disclosed in the embodiment of the present application, the bus of the EMU can be with
Including a main DC bus BD, the first spare spare DC bus BN2 of DC bus BN1 and second, at this point, EMU is two-way
The output end of DC-DC converter 200 in power supply circuit respectively with the main DC bus BD, the first spare DC bus BN1
Be connected with the second spare DC bus BN2, also, the output end of the DC-DC converter 200 directly with the main DC bus
BD is connected, and is provided with first between the output end of the DC-DC converter 200 and the described first spare DC bus BN1 and contacts
Device K4 is provided with second contactor between the output end of the DC-DC converter 200 and the second spare DC bus BN2
K4；And the 4th control button and the 5th control button are additionally provided on the EMU operating platform, the 4th control is pressed
Key is used to control the on off operating mode of first contactor, and the 5th control button is used to control the on off operating mode of second contactor.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of EMU bidirectional power supply circuit, which is characterized in that be applied in EMU power supply system, comprising:
The first end of two-way AC-DC converter, the two-way AC-DC converter is connected with the ac bus of EMU, institute
The second end for stating two-way AC-DC converter is connected with the power accumulator of EMU；
DC-DC converter, the input terminal of the DC-DC converter are connected with the second end of the two-way AC-DC converter, institute
The output end for stating DC-DC converter is connected with the DC bus of motor-car；
Power accumulator, the power supply interface of the power accumulator respectively with the second end of the two-way AC-DC converter with
And the DC bus of traction convertor is connected in EMU power supply system；
The first control switch between the first end and the ac bus of the two-way AC-DC converter is set；
The second control being arranged between the power supply interface of the power accumulator and the input terminal of the DC-DC converter is opened
It closes；
Third control between DC bus in the power supply interface and the traction convertor of the power accumulator is set
Switch.
2. EMU bidirectional power supply circuit according to claim 1, which is characterized in that further include:
The low tension battery that charging interface is connected with the output end of the DC-DC converter.
3. EMU bidirectional power supply circuit according to claim 2, which is characterized in that further include:
The charging of the output end and the low tension battery of diode, the anode of the diode and the DC-DC converter
Interface is connected, and cathode is connected with the DC bus of the motor-car.
4. EMU bidirectional power supply circuit according to claim 1, which is characterized in that the two-way AC-DC converter,
It include: the first two-way AC-DC stream transformer and the second two-way AC-DC stream transformer；
The DC-DC converter includes: the first DC-DC converter and the second DC-DC converter；
The first two-way AC-DC stream transformer and first DC-DC converter series connection, constitute the first series arm；
The second two-way AC-DC stream transformer and second DC-DC converter series connection, constitute the second series arm；
First series arm and the second series arm are in parallel.
5. EMU bidirectional power supply circuit according to claim 4, which is characterized in that the first two-way AC-DC circulation
Parallel operation and the second two-way AC-DC stream transformer are using two-shipper cold standby or the set-up mode of two-node cluster hot backup.
6. EMU bidirectional power supply circuit according to claim 1, which is characterized in that further include:
For controlling the first control button of the on off operating mode of the first control switch；
For controlling the second control button of the on off operating mode of the second control switch；
For controlling the third control button of the on off operating mode of third control switch.
7. EMU bidirectional power supply circuit according to claim 6, which is characterized in that first control button, second
Control button and third control button are set on EMU operating platform.
8. a kind of EMU, which is characterized in that any configured with a claim 1-7 in each compartment in the EMU
EMU bidirectional power supply circuit described in one.
9. EMU according to claim 8, which is characterized in that the DC bus of the EMU includes:
First DC bus, the second DC bus and third DC bus, first DC bus, the second DC bus and
DC bus of three DC bus as EMU；
First contactor on first DC bus is set；
Second contactor on second DC bus is set.
10. EMU according to claim 9, which is characterized in that further include:
For controlling the 4th control button of the on off operating mode of first contactor；
For controlling the 5th control button of the on off operating mode of second contactor；
4th control button and the 5th control button are set on EMU operating platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920157128.7U CN209454733U (en) | 2019-01-29 | 2019-01-29 | A kind of EMU bidirectional power supply circuit and EMU |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920157128.7U CN209454733U (en) | 2019-01-29 | 2019-01-29 | A kind of EMU bidirectional power supply circuit and EMU |
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| CN209454733U true CN209454733U (en) | 2019-10-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020155804A1 (en) * | 2019-01-29 | 2020-08-06 | 中车长春轨道客车股份有限公司 | Motor train unit emergency traction system |
| GB2590655A (en) * | 2019-12-23 | 2021-07-07 | Siemens Energy AS | Energy distribution system |
-
2019
- 2019-01-29 CN CN201920157128.7U patent/CN209454733U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020155804A1 (en) * | 2019-01-29 | 2020-08-06 | 中车长春轨道客车股份有限公司 | Motor train unit emergency traction system |
| GB2590655A (en) * | 2019-12-23 | 2021-07-07 | Siemens Energy AS | Energy distribution system |
| GB2590655B (en) * | 2019-12-23 | 2022-08-24 | Siemens Energy AS | Energy distribution system |
| US11764583B2 (en) | 2019-12-23 | 2023-09-19 | Siemens Energy AS | Energy distribution system |
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