CN111137324A - Train and traction control system and method thereof - Google Patents
Train and traction control system and method thereof Download PDFInfo
- Publication number
- CN111137324A CN111137324A CN201811313417.8A CN201811313417A CN111137324A CN 111137324 A CN111137324 A CN 111137324A CN 201811313417 A CN201811313417 A CN 201811313417A CN 111137324 A CN111137324 A CN 111137324A
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- traction
- alternating current
- instruction
- train
- storage battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
- B61C17/12—Control gear; Arrangements for controlling locomotives from remote points in the train or when operating in multiple units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
Abstract
The invention discloses a traction control system, comprising: the control module is used for controlling the traction converter and the bidirectional charger to start after receiving the emergency power supply instruction; the storage battery pack comprises a plurality of storage batteries and is used for outputting direct current; the traction converter is used for converting direct current output by the storage battery pack into alternating current and outputting the alternating current to the traction motor after receiving a traction instruction so as to drive the train to run through the traction motor; and the bidirectional charger is used for converting the direct current output by the storage battery into alternating current and outputting the alternating current to the auxiliary load and/or the traction converter after receiving the traction instruction or the auxiliary instruction so as to facilitate the auxiliary load to work. The emergency power supply is started through the existing storage battery on the train, the autonomous operation of the fault train can be realized, the efficiency is high, and meanwhile, the storage battery supplies power to the auxiliary load, so that the comfort of the fault train in the process of rescue and returning is improved. The invention also discloses a traction control method and a train, which have the beneficial effects.
Description
Technical Field
The invention relates to the field of rail transit, in particular to a train and a traction control system and method thereof.
Background
At present, a train mainly gets power from a power grid through a pantograph to maintain normal operation of the train, when the pantograph of the train has a fault or the train cannot get power from the power grid due to other factors, the train is judged to have the fault, the faulty train cannot operate autonomously and can only be dragged through a rescue locomotive, before the rescue locomotive does not arrive, the faulty train can only wait in situ, the waiting time is long, and the usability and the efficiency of the existing traction scheme are low.
In addition, only after the rescue locomotive drags the failed train to the lowest speed threshold of the rescue power generation, the failed train can utilize the device and the control scheme of the failed train to maintain the auxiliary loads (such as an air conditioner, a cooling system and the like) to work, and when the speed of the failed train is between the standstill and the lowest speed threshold of the rescue power generation, the auxiliary loads on the failed train cannot be put into work, so that the comfort of the failed train in the rescue returning process is seriously influenced in the period of time.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a traction control system and a traction control method, wherein emergency power supply is started through an existing storage battery on a train, so that the autonomous operation of a fault train can be realized, the efficiency is high, and meanwhile, the storage battery supplies power to an auxiliary load, so that the comfort of the fault train in the process of rescue and returning is improved; another object of the present invention is to provide a train comprising the traction control system described above.
In order to solve the above technical problem, the present invention provides a traction control system, including:
the control module is used for controlling the traction converter and the bidirectional charger to start after receiving the emergency power supply instruction;
the storage battery pack comprises a plurality of storage batteries and is used for outputting direct current;
the traction converter is used for converting direct current output by the storage battery pack into alternating current and outputting the alternating current to a traction motor after receiving a traction instruction so as to drive a train to run through the traction motor;
and the bidirectional charger is used for converting the direct current output by the storage battery into alternating current and outputting the alternating current to an auxiliary load and/or the traction converter after receiving the traction instruction or the auxiliary instruction so as to facilitate the auxiliary load to work.
Preferably, the control module includes:
the acquisition unit is used for acquiring the information of the storage battery pack after receiving the emergency power supply instruction;
the starting unit is used for controlling the traction converter and the bidirectional charger to start when the information meets the traction condition; and the bidirectional charger is also used for controlling the bidirectional charger to start when the information meets the load condition.
Preferably, the information of the storage battery pack includes electric quantity of each storage battery and a voltage difference between any two storage batteries.
Preferably, the traction converter comprises:
the auxiliary inverter is used for uncontrollably rectifying the alternating current output by the bidirectional charger into direct current and outputting the direct current to the traction inverter;
and the traction inverter is used for converting the direct current output by the auxiliary inverter into alternating current with variable voltage and variable frequency and outputting the alternating current to the traction motor.
Preferably, the traction converter further comprises:
and the transformer is used for isolating, boosting and outputting the alternating current output by the bidirectional charger to the auxiliary inverter.
Preferably, the traction control system further comprises:
and the display is used for displaying the starting state of the traction converter and the starting state of the bidirectional charger, and the starting state comprises starting success or starting failure.
Preferably, the traction control system further comprises:
the driver controller handle is arranged in a driver cab of the train and is used for outputting the traction instruction;
and the switch is arranged in the cab and used for outputting the auxiliary instruction.
Preferably, the traction control system further comprises:
and the alarm device is used for giving an alarm when the information does not meet the load condition.
In order to solve the above technical problem, the present invention further provides a traction control method applied to the traction control system according to any one of the above aspects, including:
after receiving an emergency power supply instruction, the control module controls the traction converter and the bidirectional charger to start;
after receiving a traction instruction, the traction converter converts direct current output by the storage battery into alternating current and outputs the alternating current to a traction motor so as to drive a train to run through the traction motor;
and after receiving the traction instruction or the auxiliary instruction, the bidirectional charger converts the direct current output by the storage battery into alternating current and outputs the alternating current to an auxiliary load and/or the traction converter so as to facilitate the auxiliary load to work.
In order to solve the technical problem, the invention further provides a train, which comprises the traction control system.
The present invention provides a traction control system, comprising: the control module is used for controlling the traction converter and the bidirectional charger to start after receiving the emergency power supply instruction; the storage battery pack comprises a plurality of storage batteries and is used for outputting direct current; the traction converter is used for converting direct current output by the storage battery pack into alternating current and outputting the alternating current to the traction motor after receiving a traction instruction so as to drive the train to run through the traction motor; and the bidirectional charger is used for converting the direct current output by the storage battery into alternating current and outputting the alternating current to the auxiliary load and/or the traction converter after receiving the traction instruction or the auxiliary instruction so as to facilitate the auxiliary load to work.
Therefore, in practical application, the scheme of the invention is adopted, the existing storage battery on the train is used for starting emergency power supply to drive the traction motor of the train to work, so that the train can run, the automatic running of the fault train can be realized without depending on a rescue locomotive, the efficiency is high, and meanwhile, the storage battery is used for supplying power to an auxiliary load, so that the comfort of the fault train in the process of rescue and returning is improved.
The invention also provides a traction control method and a train, which have the same beneficial effects as the traction control system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a traction control system according to the present invention;
FIG. 2 is a schematic diagram of another traction control system provided by the present invention;
FIG. 3 is a schematic diagram of another traction control system provided by the present invention;
FIG. 4 is a schematic diagram of another traction control system provided by the present invention;
fig. 5 is a flowchart illustrating steps of a traction control system according to the present invention.
Detailed Description
The core of the invention is to provide a traction control system and a method, emergency power supply is started through an existing storage battery on a train, autonomous operation of a fault train can be realized, the efficiency is high, and meanwhile, the storage battery supplies power for an auxiliary load, so that the comfort of the fault train in the process of rescue and returning is improved; another core of the present invention is to provide a train including the traction control system described above.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a traction control system provided in the present invention, including:
the control module 1 is used for controlling the traction converter 2 and the bidirectional charger 3 to start after receiving an emergency power supply instruction;
specifically, after receiving an emergency power supply instruction, the control module 1 firstly determines whether the emergency power supply instruction is valid according to a preset rule, and when the emergency power supply instruction is determined to be valid, the emergency power supply instruction is transmitted to the traction converter 2, the bidirectional charger 3, an air conditioner and other equipment through an MVB (Multifunction Vehicle Bus), after receiving the emergency power supply instruction, the traction converter 2 controls three-phase input establishment, pre-charging and water pump starting to realize starting of the traction converter 2, the bidirectional charger 3 is started after receiving the emergency power supply instruction, and meanwhile, the traction converter 2 and the bidirectional charger 3 can return a ready signal to the control module 1 after the completion of starting, wherein the control module 1 can be specifically an existing network control system in a train.
The storage battery pack G comprises a plurality of storage batteries and is used for outputting direct current;
specifically, the storage battery group G is used for supplying power to the traction converter 2 and the bidirectional charger 3, each storage battery in the storage battery group G is of a parallel connection structure, and when any one storage battery fails, normal power supply of other storage batteries cannot be influenced, so that the reliability of the scheme is improved. In addition, in order to realize balanced power supply of each storage battery, the traction output power of each vehicle needs to be matched.
The traction converter 2 is used for converting direct current output by the storage battery group G into alternating current and outputting the alternating current to a traction motor after receiving a traction instruction so as to drive the train to run through the traction motor;
specifically, the traction converter 2 is an existing device for converting direct current into alternating current on the train, a load of the traction converter is a traction motor, and after receiving a traction instruction, the traction converter 2 converts the direct current output by the storage battery into three-phase alternating current to drive the traction motor to work so as to realize the operation of the train.
And the bidirectional charger 3 is used for converting the direct current output by the storage battery group G into alternating current and outputting the alternating current to the auxiliary load and/or the traction converter 2 after receiving the traction instruction or the auxiliary instruction so as to facilitate the auxiliary load to work.
Specifically, the bidirectional charger 3 can convert alternating current into direct current to provide control power for equipment on the train and supply power for the storage battery, can also convert direct current into alternating current to supply power for each auxiliary load (such as a water pump, an air conditioner and the like) on the train after receiving a traction instruction or an auxiliary instruction, and can also supply power for the traction converter 2 to realize the emergency power supply function of the storage battery.
The present invention provides a traction control system, comprising: the control module is used for controlling the traction converter and the bidirectional charger to start after receiving the emergency power supply instruction; the storage battery pack comprises a plurality of storage batteries and is used for outputting direct current; the traction converter is used for converting direct current output by the storage battery pack into alternating current and outputting the alternating current to the traction motor after receiving a traction instruction so as to drive the train to run through the traction motor; and the bidirectional charger is used for converting the direct current output by the storage battery into alternating current and outputting the alternating current to the auxiliary load and/or the traction converter after receiving the traction instruction or the auxiliary instruction so as to facilitate the auxiliary load to work.
Therefore, in practical application, the scheme of the invention is adopted, the existing storage battery on the train is used for starting emergency power supply to drive the traction motor of the train to work, so that the train can run, the automatic running of the fault train can be realized without depending on a rescue locomotive, the efficiency is high, and meanwhile, the storage battery is used for supplying power to an auxiliary load, so that the comfort of the fault train in the process of rescue and returning is improved.
On the basis of the above-described embodiment:
as a preferred embodiment, the control module 1 comprises:
the acquisition unit is used for acquiring the information of the storage battery pack G after receiving the emergency power supply instruction;
the starting unit is used for controlling the traction converter 2 and the bidirectional charger 3 to start when the information meets the traction condition; and the control module is also used for controlling the bidirectional charger 3 to start when the information meets the load condition.
As a preferred embodiment, the information of the battery pack G includes the charge of each battery and the voltage difference between any two batteries.
Specifically, after receiving the emergency power supply instruction, the control module 1 first obtains information of the storage battery group G, where the information includes electric quantities of the storage batteries and voltage differences between any two storage batteries, it can be understood that the traction condition and the load condition are different, and the requirement of the traction condition on the electric quantities of the storage batteries is higher, assuming that the storage battery group G has 7 storage batteries connected in parallel, when 6 storage batteries with electric quantities of more than 60% exist and the voltage difference between every two storage batteries is less than a preset value, it is determined that the information of the storage battery group G satisfies the traction condition, and when 3 storage batteries with electric quantities of more than 60% exist and the voltage difference between every two storage batteries is less than the preset value, it is determined that the information of the storage battery group G satisfies the load condition. When the traction condition is met, the electric quantity of the storage battery pack G is enough to draw the train to run, meanwhile, the power supply requirement of the auxiliary load can be met, when the load condition is met, the electric quantity of the storage battery pack G is not enough to draw the train to run, the auxiliary load can only be supplied with power, and before the current vehicle speed does not reach the lowest speed threshold value of power generation, the auxiliary load is controlled to work, so that the comfort level in a passenger room is improved.
As a preferred embodiment, the traction converter 2 comprises:
the auxiliary inverter 21 is used for uncontrollably rectifying the alternating current output by the bidirectional charger 3 into direct current and outputting the direct current to the traction inverter 22;
and a traction inverter 22 for converting the direct current output by the auxiliary inverter 21 into alternating current with variable voltage and variable frequency and outputting the alternating current to a traction motor.
Specifically, the traction control system provided by the present invention may include a plurality of structures, the first structure is shown in fig. 2, wherein the traction converter 2 includes a traction inverter 22 and a four-quadrant rectifier, the storage battery G directly supplies power to the intermediate dc link of the traction inverter 22, the traction inverter 22 takes power from the intermediate dc link, inverts the dc power into a voltage-variable and frequency-variable ac power, and controls the traction motor to operate, wherein the intermediate dc link is used for filtering, storing, and releasing electric energy; the second structure is as shown in fig. 3, the direct current output by the storage battery is converted into three-phase alternating current by the bidirectional charger 3, on one hand, the three-phase alternating current is supplied to auxiliary loads (including a cooling system, an air conditioner and the like) on the train, on the other hand, the traction converter 2 is supplied with power, correspondingly, the traction converter 2 comprises an auxiliary inverter 21 besides a traction inverter 22 and a four-quadrant rectifier, the auxiliary inverter 21 is used for outputting the three-phase alternating current output by the bidirectional charger 3 to a middle direct current link after the three-phase alternating current is subjected to uncontrolled rectification, so that the traction inverter 22 can obtain power from the middle direct current link, when the second structure is adopted, the internal wiring of the traction converter 2 is not required to be.
As a preferred embodiment, the traction converter 2 further comprises:
and the transformer 23 is used for isolating, boosting and outputting the alternating current output by the bidirectional charger 3 to the auxiliary inverter 21.
Specifically, in order to increase the allowable running speed of the train, on the basis of the second structure, the transformer 23 for isolating and boosting the three-phase alternating current is further arranged between the bidirectional charger 3 and the auxiliary inverter 21, and a specific structural schematic diagram is shown in fig. 4.
As a preferred embodiment, the traction control system further comprises:
and the display is used for displaying the starting state of the traction converter 2 and the starting state of the bidirectional charger 3, and the starting state comprises starting success or starting failure.
As a preferred embodiment, the traction control system further comprises:
the driver controller handle is arranged in a driver cab of the train and used for outputting a traction instruction;
and the switch is arranged in the cab and used for outputting the auxiliary instruction.
Specifically, the successful starting corresponds to the above ready signal, when the information of the storage battery group G meets the traction condition, the control module 1 controls the traction converter 2 and the bidirectional charger 3 to start, the successful starting is returned to the network control system after the successful starting, and the display displays the prompt information of the successful starting, so that a driver can operate the handle of the driver controller to apply traction after seeing the prompt on the display and output a traction instruction to control the train to run; or when the information of the storage battery pack G meets the load condition, the control module 1 controls the bidirectional charger 3 to start, and returns a successful start to the network control system after the successful start, and the display displays the prompt information of the successful start, so that the driver operates the switch in the cab after seeing the prompt on the display, and outputs an auxiliary instruction to control the air conditioner of the train to work.
As a preferred embodiment, the traction control system further comprises:
and the alarm device is used for giving an alarm when the information does not meet the load condition.
Specifically, when the information of the storage battery pack G does not meet the load condition, the fact that the traction function cannot be achieved due to low electric quantity of the storage battery pack G and the auxiliary load cannot be supplied with power is indicated, in order to avoid driver misoperation on a handle of a driver controller or an air conditioner switch, the traction control system is further provided with an alarm device, when the electric quantity of the storage battery pack G is low or potential safety hazards exist due to large pressure difference among storage batteries, an alarm is given out, and the safety and the reliability of the traction control system are improved.
The alarm device may be a buzzer and/or an indicator light.
In summary, the traction control system provided by the invention mainly depends on the traction converter 2, the storage battery and the bidirectional charger 3, wherein the storage battery supplies power in parallel. The bidirectional charger 3 inverts a direct-current power supply of the storage battery into a three-phase alternating-current power supply, the traction converter 2 and a necessary cooling system on the train work through an alternating-current bus of the train, the three-phase alternating-current power supply is subjected to uncontrolled rectification to an intermediate direct-current link of the traction inverter 22 after being boosted sequentially through the transformer 23 and the auxiliary inverter 21, and the traction motor is driven to work after the traction inverter 22 works.
Referring to fig. 5, fig. 5 is a flowchart illustrating steps of a traction control method according to an embodiment of the present invention, applied to a traction control system according to any one of the above embodiments, including:
step 1: the control module controls the traction converter and the bidirectional charger to start after receiving the emergency power supply instruction;
step 2: after receiving a traction instruction, the traction converter converts direct current output by the storage battery into alternating current and outputs the alternating current to a traction motor so as to drive the train to run through the traction motor;
and step 3: after receiving the traction instruction or the auxiliary instruction, the bidirectional charger converts the direct current output by the storage battery into alternating current and outputs the alternating current to the auxiliary load and/or the traction converter so as to facilitate the auxiliary load to work.
The traction control method provided by the invention has the same beneficial effects as the traction control system.
For the description of the traction control method provided by the present invention, please refer to the above embodiments, and the description of the present invention is omitted here.
Correspondingly, the invention also provides a train, which comprises the traction control system.
The train provided by the invention has the same beneficial effects as the traction control system.
For the introduction of the train provided by the present invention, please refer to the above embodiments, and the present invention is not repeated herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The method disclosed by the embodiment corresponds to the traction control system disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the system part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A traction control system, comprising:
the control module is used for controlling the traction converter and the bidirectional charger to start after receiving the emergency power supply instruction;
the storage battery pack comprises a plurality of storage batteries and is used for outputting direct current;
the traction converter is used for converting direct current output by the storage battery pack into alternating current and outputting the alternating current to a traction motor after receiving a traction instruction so as to drive a train to run through the traction motor;
and the bidirectional charger is used for converting the direct current output by the storage battery into alternating current and outputting the alternating current to an auxiliary load and/or the traction converter after receiving the traction instruction or the auxiliary instruction so as to facilitate the auxiliary load to work.
2. The traction control system of claim 1, wherein the control module comprises:
the acquisition unit is used for acquiring the information of the storage battery pack after receiving the emergency power supply instruction;
the starting unit is used for controlling the traction converter and the bidirectional charger to start when the information meets the traction condition; and the bidirectional charger is also used for controlling the bidirectional charger to start when the information meets the load condition.
3. The traction control system of claim 2, wherein the information on the battery pack includes the charge of each of the batteries and the voltage difference between any two of the batteries.
4. The traction control system of claim 1, wherein the traction converter comprises:
the auxiliary inverter is used for uncontrollably rectifying the alternating current output by the bidirectional charger into direct current and outputting the direct current to the traction inverter;
and the traction inverter is used for converting the direct current output by the auxiliary inverter into alternating current with variable voltage and variable frequency and outputting the alternating current to the traction motor.
5. The traction control system of claim 4, wherein the traction converter further comprises:
and the transformer is used for isolating, boosting and outputting the alternating current output by the bidirectional charger to the auxiliary inverter.
6. The traction control system of claim 2, further comprising:
and the display is used for displaying the starting state of the traction converter and the starting state of the bidirectional charger, and the starting state comprises starting success or starting failure.
7. The traction control system according to any one of claims 1 to 6, further comprising:
the driver controller handle is arranged in a driver cab of the train and is used for outputting the traction instruction;
and the switch is arranged in the cab and used for outputting the auxiliary instruction.
8. The traction control system of claim 2, further comprising:
and the alarm device is used for giving an alarm when the information does not meet the load condition.
9. A traction control method applied to the traction control system according to any one of claims 1 to 8, comprising:
after receiving an emergency power supply instruction, the control module controls the traction converter and the bidirectional charger to start;
after receiving a traction instruction, the traction converter converts direct current output by the storage battery into alternating current and outputs the alternating current to a traction motor so as to drive a train to run through the traction motor;
and after receiving the traction instruction or the auxiliary instruction, the bidirectional charger converts the direct current output by the storage battery into alternating current and outputs the alternating current to an auxiliary load and/or the traction converter so as to facilitate the auxiliary load to work.
10. A train comprising a traction control system according to any one of claims 1 to 8.
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|---|---|---|---|
| CN201811313417.8A CN111137324A (en) | 2018-11-06 | 2018-11-06 | Train and traction control system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811313417.8A CN111137324A (en) | 2018-11-06 | 2018-11-06 | Train and traction control system and method thereof |
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| CN111137324A true CN111137324A (en) | 2020-05-12 |
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| CN201811313417.8A Pending CN111137324A (en) | 2018-11-06 | 2018-11-06 | Train and traction control system and method thereof |
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| CN111994128A (en) * | 2020-08-18 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Grid-connected control method and system for auxiliary inverter of urban rail train |
| CN112644521A (en) * | 2020-12-14 | 2021-04-13 | 中车唐山机车车辆有限公司 | Uninterrupted power supply system of vehicle and vehicle system |
| CN113002597A (en) * | 2021-04-23 | 2021-06-22 | 重庆中车长客轨道车辆有限公司 | Rescue system for dead zone |
| CN113060186A (en) * | 2021-04-23 | 2021-07-02 | 重庆中车长客轨道车辆有限公司 | Rescue method for non-electricity zone |
| CN114684206A (en) * | 2022-04-29 | 2022-07-01 | 中车青岛四方机车车辆股份有限公司 | Storage battery emergency power supply method, system and device and train |
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Application publication date: 20200512 |