CN106347143B - Electric vehicle and its pass through the control system and control method between third rail non-Electric region - Google Patents
Electric vehicle and its pass through the control system and control method between third rail non-Electric region Download PDFInfo
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- CN106347143B CN106347143B CN201610877238.1A CN201610877238A CN106347143B CN 106347143 B CN106347143 B CN 106347143B CN 201610877238 A CN201610877238 A CN 201610877238A CN 106347143 B CN106347143 B CN 106347143B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses the control methods between a kind of non-Electric region by third rail, comprising the following steps: obtains vehicle working condition；When the vehicle is in traction or zero-bit operating condition, into next step；When the rate of descent of the intermediate-bus voltage of the vehicle reaches default rate of descent, control high-speed circuit breaker is disconnected；It controls traction invertor and disconnects short circuit contactor；When detecting that the intermediate-bus voltage restores normal value, it is closed the high-speed circuit breaker.Invention additionally discloses the control systems between a kind of non-Electric region by third rail；In addition, invention additionally discloses a kind of electric vehicles with the control system.Above-mentioned control method, avoids the intermediate bus bar of vehicle by biggish dash current, between effectively ensuring that vehicle passes through third rail non-Electric region.
Description
Technical field
Control method the present invention relates to control technology field, in particular between a kind of non-Electric region by third rail.This hair
A kind of bright control system further related between the non-Electric region by third rail；In addition, the invention further relates to one kind to have the control system
Electric vehicle.
Background technique
It is typically provided between more non-Electric region using the urban track traffic of third-rail feeding and carries out insulation disjunction, non-Electric region
Between length generally differed at 2-40 meters.City rail vehicle its power supply when between by non-Electric region can be interrupted temporarily, at present there is no
Known effective measures can effectively solve it and cross non-Electric region problem.
Electric car is to guarantee that its power supply takes the continuity of stream, generally using the fixed characteristic of organizing into groups of its more piece vehicle by permutation vehicle
High-voltage electrical apparatus bus is connected (big mother) or each marshalling high-voltage electrical apparatus busbar connection (small mother), makes the pantagraph current collector of power car
The distance between be more than length between non-Electric region, when car electric in this way passes through between non-Electric region the pantagraph current collector of an at least section power car by
Flowing its power supply will not interrupt, between so that it is passed through non-Electric region.
Electric engineering car due to being single-unit vehicle independent operating, the distance between two pantagraph current collectors by single-unit vehicle length limitation,
When length is more than the distance between two pantagraph current collectors between non-Electric region, the power supply of electric engineering car is certain to temporarily interrupt, and influences
Electric engineering car operates normally.
Summary of the invention
The object of the present invention is to provide the control method between a kind of non-Electric region by third rail, which be may insure
Vehicle passes through between third rail non-Electric region.The present invention also provides the control systems between a kind of non-Electric region by third rail；In addition,
The present invention also provides a kind of electric vehicles with the control system.
To achieve the above object, the present invention provides the control method between a kind of non-Electric region by third rail, including following step
It is rapid:
Obtain vehicle working condition；
When the vehicle is in traction or zero-bit operating condition, into next step；
When the rate of descent of the intermediate-bus voltage of the vehicle reaches default rate of descent, control high-speed circuit breaker is disconnected；
It controls traction invertor and disconnects short circuit contactor；
When detecting that the intermediate-bus voltage restores normal value, it is closed the high-speed circuit breaker.
Relative to above-mentioned background technique, control method provided by the invention, when vehicle is in traction or zero-bit operating condition, and vehicle
The rate of descent of intermediate-bus voltage when reaching default rate of descent, it is believed that vehicle enters between non-Electric region, and controls high speed
Breaker disconnects, and controls traction invertor and disconnect short circuit contactor, so, with can ensuring vehicle normal table capable
It sails in non-Electric region, avoids the intermediate bus bar of vehicle by biggish dash current, effectively ensure that vehicle passes through third
Between rail non-Electric region.
Preferably, described when detecting that the intermediate-bus voltage restores normal value, it is closed the high-speed circuit breaker
After step, further includes:
Control the traction invertor closure pre-charge contactor；
When the precharge is completed, it is closed the short circuit contactor, and disconnects the pre-charge contactor.
Preferably, it further comprises the steps of:
When the vehicle is in electric braking operating condition, into next step；
Obtain the intermediate-bus voltage value of electric braking moment；
Predetermined registration operation is carried out according to the voltage value to be within preset range to control the voltage value.
Preferably, the step of intermediate-bus voltage value for obtaining electric braking moment specifically:
Control traction invertor and subordinate inverter record the intermediate-bus voltage value of electric braking moment respectively.
Preferably, described to be within preset range according to voltage value progress predetermined registration operation with controlling the voltage value
The step of specifically include:
When the voltage value rises to preset upper limit voltage value, control braking resistor is connected, to control the voltage value
Within upper range；
When the voltage value drops to pre-determined lower limit voltage value, control subordinate inverter is out of service, described in control
Voltage value is within lower range.
The present invention also provides the control systems between a kind of non-Electric region by third rail, comprising:
Operating condition obtains module: for obtaining vehicle working condition；
First judgment module: for judging whether the vehicle is in traction or zero-bit operating condition；
Disconnect module: for when the rate of descent of the intermediate-bus voltage of the vehicle reaches default rate of descent, control to be high
Fast breaker disconnects；And it controls traction invertor and disconnects short circuit contactor；
Closure module: when detecting that the intermediate-bus voltage restores normal value, it is closed the high-speed circuit breaker.
Preferably, further includes:
Preliminary filling module: for controlling the traction invertor closure pre-charge contactor；And when the precharge is completed, it is closed
The short circuit contactor, and disconnect the pre-charge contactor.
Preferably, further includes:
Second judgment module: for judging that the vehicle is in electric braking operating condition；
Voltage obtains module: for obtaining the intermediate-bus voltage value of electric braking moment；
Control module: for according to the voltage value carry out predetermined registration operation with control the voltage value be in preset range it
It is interior.
Preferably, further includes:
Upper limit voltage control module: for controlling braking resistor when the voltage value rises to preset upper limit voltage value
It connects, to control the voltage value within upper range；
Lower voltage limit control module: for controlling auxiliary inversion when the voltage value drops to pre-determined lower limit voltage value
Device is out of service, to control the voltage value within lower range.
The present invention also provides a kind of electric vehicles, including the control between the non-Electric region described in any of the above embodiments by third rail
System.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is vehicle major loop electronic schematic diagram provided by the embodiment of the present invention；
Fig. 2 is provided by the embodiment of the present invention by the flow chart of the control method between third rail non-Electric region；
Fig. 3 is provided by the embodiment of the present invention by the structural block diagram of the control system between third rail non-Electric region.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make those skilled in the art more fully understand the present invention program, with reference to the accompanying drawing and it is embodied
The present invention is described in further detail for mode.
Fig. 1, Fig. 2 and Fig. 3 are please referred to, Fig. 1 is vehicle major loop electronic schematic diagram provided by the embodiment of the present invention；
Fig. 2 is provided by the embodiment of the present invention by the flow chart of the control method between third rail non-Electric region；Fig. 3 is that the present invention is implemented
Pass through the structural block diagram of the control system between third rail non-Electric region provided by example.
Control method between a kind of non-Electric region by third rail provided by the invention, mainly includes the following steps that, such as explanation
Shown in book attached drawing 2:
S1, vehicle working condition is obtained；
S2, traction is in or when zero-bit operating condition when the vehicle, into next step；
S3, when the rate of descent of the intermediate-bus voltage of the vehicle reaches default rate of descent, control high-speed circuit breaker is disconnected
It opens；
S4, control traction invertor disconnect short circuit contactor；
S5, when detecting that the intermediate-bus voltage restores normal value, be closed the high-speed circuit breaker.
Before introducing control method of the invention, as shown in Figure of description 1, Fig. 1 is provided by the embodiment of the present invention
Vehicle major loop electronic schematic diagram；As can be seen that after vehicle (such as electric engineering car) enters between non-Electric region, due to
Pantagraph current collector 1 can not be flowed, and after power supply interrupts, the intermediate-bus voltage variation of major loop is more complex, mainly be transported by vehicle
Row operating condition influences: under traction, zero-bit operating condition, due to the common consumption of traction invertor 6 and subordinate inverter 11, intermediate bus bar
Voltage can rapid decrease；Under electric braking operating condition, intermediate-bus voltage variation be towed inverter 6 generation electrical braking power and
Subordinate inverter 11 consumes joint effect, if electrical braking power is greater than subordinate inverter 11 and consumes medium voltage by rising, if electric
Braking power is less than subordinate inverter 11 and consumes medium voltage for decline.In addition to this, current-limiting resistance 10 and short circuit contactor 5 be simultaneously
Connection, and current-limiting resistance 10 is connected with pre-charge contactor 4.
When electric engineering car is again introduced between electric region, if high-speed circuit breaker 2 does not disconnect, due to traction invertor 6
The presence of internal Support Capacitor 9, intermediate bus bar will generate biggish dash current, when third rail network pressure and intermediate-bus voltage
When difference is excessive, large inrush current will lead to high-speed circuit breaker 3 because of the automatic disjunction of overcurrent, and being also possible to when serious can scaling loss fusing
Device 2.
Third rail non-Electric region is generally shorter, and the time that electric engineering car passes through is also very short, heavy current impact generate when
Between the delay time that enters between electric region with electric engineering car it is very small.Under the premise of no ground signal gives warning in advance, to
Pass through non-Electric region, electric engineering car is to the judgement of non-Electric region and takes the time requirement for the treatment of measures very high.
By above-mentioned, control method between the non-Electric region provided by the present invention by third rail, in traction and electric braking work
Under condition, after locomotive enters between non-Electric region, due to drawing the consumption with assistant load, intermediate-bus voltage meeting rapid decrease, voltage
The minimum extreme value of rate of descent is generally present under zero-bit operating condition, and traction invertor 6 judges that voltage rate of descent reference value should be less than this
Value when the rate of descent of intermediate-bus voltage reaches default rate of descent, first draws and directly disconnects high-speed circuit breaker 3 after blocking, and to
Network control system 8 is transmitted across signal between non-Electric region, and network control system 8 stops output high-speed circuit breaker after receiving the signal
3 close commands.
In above process, work can currently be used according to electric engineering car by traction invertor 6 and subordinate inverter 11
Condition is independently controlled.
Under traction and zero-bit operating condition, 6 real-time monitoring intermediate-bus voltage rate of descent of traction invertor, if decline is very fast,
Then determine that electric engineering car enters non-Electric region, forbid high-speed circuit breaker 3 to be closed by hardware by it, while being controlled to locomotive network
System 8 is transmitted across signal between non-Electric region.
After 3 disjunction of high-speed circuit breaker, traction invertor 6 disconnects short circuit contactor 5, and subordinate inverter 11 is automatically stopped work
Make.
Network control system 8 receives crossing between non-Electric region for traction invertor 6 and resets the closure of high-speed circuit breaker 3 after signal and refer to
It enables, and sends confirmation signal to traction invertor 6；Traction invertor 6 is closed after confirming by hardware permission high-speed circuit breaker 3 again
It closes, high-speed circuit breaker 3 is still in off-state.
Traction invertor 6 issued between non-Electric region after signal, if network control system 8 detects network pressure within a certain period of time
Restore, is then closed high-speed circuit breaker 3 automatically again.
After high-speed circuit breaker 3 is closed, traction invertor 6 is closed pre-charge contactor 4, is pre-charged, and precharge is completed
Afterwards, it is closed short circuit contactor 5 and disconnects pre-charge contactor 4, export tractive force again；The automatic work again of subordinate inverter 11
Make.Crossing between non-Electric region successfully terminates, and electric engineering car continues to operate normally.
That is, network control system 8 can monitor that network pressure is restored after electric engineering car is again introduced between electric region
Normally control high-speed circuit breaker 3 is closed again.First closure precharge connects after traction invertor 6 detects the closure of high-speed circuit breaker 3
Tentaculum 4 carries out the electric treatment of current limliting preliminary filling to Support Capacitor 9, and after the completion of precharge, the control closure of short circuit contactor 5 is simultaneously switched off
Pre-charge contactor 4, and release traction block and export tractive force again.Electric engineering car by time of non-Electric region generally compared with
Short, network control system 8 controls high-speed circuit breaker 3, and closure increases time restriction automatically, and security reliability can be improved.
Under electric braking operating condition, when the power caused by the electric braking is less than assistant load and consumes, intermediate bus bar at this time
Voltage value can decline, and when subordinate inverter 11 detects decline relative value to a certain range, subordinate inverter 11, which is blocked, to be exported, when
When voltage is restored to higher than initial value, subordinate inverter 11 is lifted a blockade, to reach the decline of control intermediate-bus voltage value
Range.When the power caused by the electric braking is greater than assistant load and consumes, the voltage value of the intermediate bus bar of major loop can rise, when
Traction invertor 11, which detects, rises relative value to a certain range, and traction invertor 6 controls braking resistor investment, to reach control
The lifting range of the voltage value of intermediate bus bar processed.Since intermediate network pressure is maintained within a certain range, electric engineering car passes through no electricity
The power failure in area does not influence its normal operation.
In above process, when the voltage value of intermediate bus bar rises to preset upper limit voltage value, control braking resistor is connect
It is logical, to control the voltage value within upper range；When the voltage value of intermediate bus bar drops to pre-determined lower limit voltage value, control
Subordinate inverter processed is out of service, to control the voltage value within lower range.
It should be noted that preset upper limit voltage value described above, pre-determined lower limit voltage value, upper range and lower limit
Range can not make concrete restriction depending on the concrete condition of different locomotives herein.
From the above, it is seen that the voltage value that control method of the invention is all based on the intermediate bus bar of locomotive is foundation,
It is controlled respectively according to locomotive operation operating condition.
Under electric braking operating condition, traction invertor 6 and subordinate inverter 11 can simultaneously separate records electric braking moments
Intermediate-bus voltage value (intermediate-bus voltage is equal to third rail network pressure when electric braking applies), if voltage rises to preset upper limit
When voltage value, traction invertor 6 controls braking resistor 7 and puts into, and medium voltage is maintained in upper range；If voltage decline is super
When crossing lower voltage limit value, subordinate inverter 11 temporarily ceases work, and medium voltage is maintained in lower range.Due to intermediate female
In the range of the network pressure of line maintains third rail network pressure, electric engineering car does not influence its normal fortune by the power failure of non-Electric region
Row.
The control system the non-Electric region provided in an embodiment of the present invention by third rail is introduced below, is described below
Control system can mutually be compareed with control method described above.
Control system between a kind of non-Electric region by third rail provided by the invention, specifically includes that
Operating condition obtains module 100: for obtaining vehicle working condition；
First judgment module 200: for judging whether the vehicle is in traction or zero-bit operating condition；
Disconnect module 300: for controlling when the rate of descent of the intermediate-bus voltage of the vehicle reaches default rate of descent
High-speed circuit breaker disconnects；And it controls traction invertor and disconnects short circuit contactor；
Closure module 400: when detecting that the intermediate-bus voltage restores normal value, it is closed the high-speed circuit breaker.
Preferably, further includes:
Preliminary filling module: for controlling the traction invertor closure pre-charge contactor；And when the precharge is completed, it is closed
The short circuit contactor, and disconnect the pre-charge contactor.
Preferably, further includes:
Second judgment module: for judging that the vehicle is in electric braking operating condition；
Voltage obtains module: for obtaining the intermediate-bus voltage value of electric braking moment；
Control module: for according to the voltage value carry out predetermined registration operation with control the voltage value be in preset range it
It is interior.
Preferably, further includes:
Upper limit voltage control module: for controlling braking resistor when the voltage value rises to preset upper limit voltage value
It connects, to control the voltage value within upper range；
Lower voltage limit control module: for controlling auxiliary inversion when the voltage value drops to pre-determined lower limit voltage value
Device is out of service, to control the voltage value within lower range.
The present invention also provides a kind of electric vehicles, including the control between the non-Electric region described in any of the above embodiments by third rail
System.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, similar portion may refer to each other between each embodiment.For the device disclosed in the embodiment, by
It is corresponded to the methods disclosed in the examples in it, so description is relatively simple, reference may be made to the description of the method.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is executed in a manner of hardware or software actually, specific application and design constraint depending on technical solution.Specially
Industry personnel can use different methods to achieve the described function each specific application, but this realization should not be recognized
It is beyond the scope of this invention.
Between electric vehicle provided by the present invention and its pass through the control system and controlling party third rail non-Electric region above
Method is described in detail.Used herein a specific example illustrates the principle and implementation of the invention, above
The explanation of embodiment is merely used to help understand method and its core concept of the invention.It should be pointed out that for the art
Those of ordinary skill for, without departing from the principle of the present invention, can also to the present invention carry out it is several improvement and repair
Decorations, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (5)
1. the control method between a kind of non-Electric region by third rail, which comprises the following steps:
Obtain vehicle working condition；
When the vehicle is in traction or zero-bit operating condition, into next step；
When the rate of descent of the intermediate-bus voltage of the vehicle reaches default rate of descent, control high-speed circuit breaker is disconnected；
It controls traction invertor and disconnects short circuit contactor；
When detecting that the intermediate-bus voltage restores normal value, it is closed the high-speed circuit breaker；
Control the traction invertor closure pre-charge contactor；
When the precharge is completed, it is closed the short circuit contactor, and disconnects the pre-charge contactor；
It further comprises the steps of:
When the vehicle is in electric braking operating condition, into next step；
Obtain the intermediate-bus voltage value of electric braking moment；
Predetermined registration operation is carried out according to the voltage value to be within preset range to control the voltage value；
The step of intermediate-bus voltage value for obtaining electric braking moment specifically:
Control traction invertor and subordinate inverter record the intermediate-bus voltage value of electric braking moment respectively.
2. control method according to claim 1, which is characterized in that it is described according to the voltage value carry out predetermined registration operation with
The step of voltage value is within preset range is controlled to specifically include:
When the voltage value rises to preset upper limit voltage value, control braking resistor is connected, to control the voltage value upper
Within the scope of limit；
When the voltage value drops to pre-determined lower limit voltage value, control subordinate inverter is out of service, to control the voltage
Value is within lower range.
3. the control system between a kind of non-Electric region by third rail characterized by comprising
Operating condition obtains module: for obtaining vehicle working condition；
First judgment module: for judging whether the vehicle is in traction or zero-bit operating condition；
Disconnect module: for controlling high quick-break when the rate of descent of the intermediate-bus voltage of the vehicle reaches default rate of descent
Road device disconnects；And it controls traction invertor and disconnects short circuit contactor；
Closure module: when detecting that the intermediate-bus voltage restores normal value, it is closed the high-speed circuit breaker；
Preliminary filling module: for controlling the traction invertor closure pre-charge contactor；And when the precharge is completed, described in closure
Short circuit contactor, and disconnect the pre-charge contactor；
Further include:
Second judgment module: for judging that the vehicle is in electric braking operating condition；
Voltage obtains module: for obtaining the intermediate-bus voltage value of electric braking moment；
Control module: it is within preset range for carrying out predetermined registration operation according to the voltage value with controlling the voltage value.
4. control system according to claim 3, which is characterized in that further include:
Upper limit voltage control module: connecting for when the voltage value rises to preset upper limit voltage value, controlling braking resistor,
To control the voltage value within upper range；
Lower voltage limit control module: for when the voltage value drops to pre-determined lower limit voltage value, control subordinate inverter to be stopped
It only runs, to control the voltage value within lower range.
5. a kind of electric vehicle, which is characterized in that pass through third rail non-Electric region including such as claim 3 or 4 is described in any item
Between control system.
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| CN201610877238.1A CN106347143B (en) | 2016-10-08 | 2016-10-08 | Electric vehicle and its pass through the control system and control method between third rail non-Electric region |
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| CN201610877238.1A CN106347143B (en) | 2016-10-08 | 2016-10-08 | Electric vehicle and its pass through the control system and control method between third rail non-Electric region |
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| CN109910612B (en) * | 2017-12-12 | 2021-03-26 | 比亚迪股份有限公司 | Protection control method and device for high-speed circuit breaker, traction control system and train |
| CN110626219B (en) * | 2018-06-21 | 2023-03-21 | 株洲中车时代电气股份有限公司 | Traction system main circuit and control method thereof and railway vehicle |
| US10992147B2 (en) * | 2019-09-25 | 2021-04-27 | GM Global Technology Operations LLC | Diagnostic method for electric propulsion system with reconfigurable battery system |
| CN111016674B (en) * | 2019-12-06 | 2021-05-11 | 中车株洲电力机车有限公司 | Power supply control system and power supply control method of locomotive |
| CN112721958B (en) * | 2021-01-15 | 2022-11-25 | 中车青岛四方机车车辆股份有限公司 | Traction auxiliary system and method suitable for power outage area and vehicle |
| CN112758112B (en) * | 2021-01-21 | 2022-07-15 | 中车青岛四方机车车辆股份有限公司 | Urban rail train power supply processing method, device and system, storage medium and processor |
| CN113135124B (en) * | 2021-04-23 | 2022-07-08 | 重庆中车长客轨道车辆有限公司 | Power supply switching system of railway vehicle |
| CN113489315B (en) * | 2021-06-30 | 2022-09-09 | 中车大连电力牵引研发中心有限公司 | Intermittent power supply traction controller based on integrated design |
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| FR2924990B1 (en) * | 2007-12-12 | 2018-06-22 | Herve Benjamin Afriat | POWER SUPPLY SYSTEM FOR ELECTRIC TRACTION VEHICLE HAVING ONBOARD ENERGY STORAGE |
| FR2932129B1 (en) * | 2008-06-06 | 2010-07-30 | Alstom Transport Sa | ELECTRICAL POWER SUPPLY FOR RAIL VEHICLE TRACTION CHAIN |
| CN102514500B (en) * | 2011-12-27 | 2014-04-16 | 南车株洲电力机车有限公司 | Method for controlling dual power engineering maintenance vehicle to pass area without electricity |
| CN102991363B (en) * | 2012-12-07 | 2015-08-05 | 南车株洲电力机车有限公司 | A kind of storage battery of city rail vehicle and pantograph tractive power supply system |
| CN105235536B (en) * | 2015-11-04 | 2017-11-28 | 株洲中车时代电气股份有限公司 | A kind of motor train unit traction system and energy control method |
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