CN112874302A - Method for controlling an auxiliary converter of a rail vehicle and rail vehicle - Google Patents
Method for controlling an auxiliary converter of a rail vehicle and rail vehicle Download PDFInfo
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- CN112874302A CN112874302A CN201911203668.5A CN201911203668A CN112874302A CN 112874302 A CN112874302 A CN 112874302A CN 201911203668 A CN201911203668 A CN 201911203668A CN 112874302 A CN112874302 A CN 112874302A
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
- B61L15/0018—Communication with or on the vehicle or vehicle train
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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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention discloses a method for controlling an auxiliary converter of a railway vehicle and the railway vehicle, wherein the railway vehicle comprises N carriages, each carriage is provided with the auxiliary converter, each auxiliary converter comprises a transformer module and an integrated controller, the integrated controllers are communicated through a bus, N is an integer larger than 1, and the method comprises the following steps: acquiring a required current value of the whole vehicle; authorizing the integrated controllers of the N sections of carriage converters according to a preset sequence so as to sequentially control the corresponding converters to output auxiliary currents; and starting the converters of the N carriages until the total auxiliary current value reaches the required current value of the whole vehicle or the total auxiliary current value reaches the required current value of the whole vehicle. The method can reduce the mutual communication of the whole vehicle and improve the response speed.
Description
Technical Field
The invention relates to the technical field of rails, in particular to a method for controlling an auxiliary converter of a rail vehicle and the rail vehicle.
Background
In the related art, 2-3 controllers are usually adopted for the track auxiliary converter to control the corresponding circuit modules to work, but each circuit module needs to be independently provided with a controller to perform one-to-one control and independently operate, so that the circuit cost is high, the communication between the circuit modules is complex, and the safety and reliability are poor.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a method of controlling a railway vehicle auxiliary converter, which can reduce mutual communication between a plurality of car controllers and improve response speed.
The other purpose of the invention is to provide a rail vehicle.
In order to solve the above problem, an embodiment of the first aspect of the present invention provides a method for controlling an auxiliary converter of a rail vehicle, where the rail vehicle includes N cars, each car is provided with an auxiliary converter, each auxiliary converter includes a transformer module and an integrated controller, the integrated controller communicates through a bus, where N is an integer greater than 1, and the method includes: acquiring a required current value of the whole vehicle; authorizing the integrated controllers of the N carriages of the converters according to a preset sequence to sequentially control the corresponding converters to output auxiliary current until the total auxiliary current value reaches the required current value of the whole vehicle, or starting the converters of the N carriages.
According to the method for controlling the auxiliary current transformer of the railway vehicle, the integrated controller in each compartment controls the current transformer of the corresponding compartment to start, the communication between the compartments is realized through a bus, namely, a plurality of independent controllers of each compartment are integrated, the auxiliary current control is realized based on the integrated controller of each current transformer, the corresponding current transformers are controlled to start according to the preset sequence, the mutual communication between the independent controllers can be reduced, the control is realized through the integrated controller of each compartment, the response speed is improved, and the working modules of the compartments are adjusted according to the power supply responsibility, so that the working efficiency of the whole vehicle is improved.
An embodiment of a second aspect of the present invention provides a rail vehicle, including: n sections of carriages and buses; each section of the carriage is provided with an auxiliary converter, each auxiliary converter comprises a transformer module and an integrated controller, and the integrated controllers communicate through the buses to realize the method for controlling the auxiliary converters of the railway vehicle, wherein N is an integer greater than 1.
According to the rail vehicle provided by the embodiment of the invention, the method for controlling the auxiliary converter of the rail vehicle is adopted, so that the cost can be saved, and the safety and the reliability can be improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of an auxiliary converter according to an embodiment of the present invention;
fig. 2 is a circuit topology diagram of an auxiliary converter according to an embodiment of the invention;
FIG. 3 is a flow chart of a method of controlling a rail vehicle auxiliary converter according to one embodiment of the present invention;
FIG. 4 is a layout diagram of a multi-section car auxiliary converter according to one embodiment of the present invention;
FIG. 5 is a block diagram of a multi-car integrated controller according to one embodiment of the present invention;
FIG. 6 is a block diagram of a vehicle according to an embodiment of the invention;
FIG. 7 is a block diagram of an integrated controller controlling multiple transformers according to one embodiment of the present invention;
fig. 8 is a block diagram of an integrated controller controlling an integrated transformer according to an embodiment of the present invention.
Reference numerals:
a rail vehicle 100; an auxiliary converter 10; n sections of the carriages 20; a bus 30;
a power supply 1; a first inverter circuit 2; a second inverter circuit 3; an integrated transformer 4; an independent transformer S4; a first conversion circuit 5; a second conversion circuit 6; an integrated controller 7; a third conversion circuit 8; a precharge circuit 9; a high-voltage electric unit 11; a power consuming load 12; a low-voltage electric unit 13; PDU 14.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In order to solve the above problems, a method for controlling an auxiliary inverter of a railway vehicle according to an embodiment of the first aspect of the present invention is described below with reference to the accompanying drawings, which can reduce mutual communication between inverter controllers and improve response speed for a railway vehicle having multiple cars.
In an embodiment of the invention, the rail vehicle comprises a plurality of cars, for example N cars, each car being provided with an auxiliary converter, each auxiliary converter comprising a transformer module and an integrated controller, the integrated controllers communicating via a vehicle bus. The structure of the auxiliary converter on which the present invention is based will be explained below.
Fig. 1 is a block diagram showing a structure of an auxiliary converter in each car, and as shown in fig. 1, the auxiliary converter 10 includes a first inverter circuit 2, a second inverter circuit 3, an integrated transformer 4, a first conversion circuit 5, a second conversion circuit 6, an integrated controller 7, a third conversion circuit 8, and a pre-charge circuit 9. The power supply 1 is used for supplying power to the auxiliary converter 10; the input end of the first inverter circuit 2 is connected with the power supply 1 and is used for converting an input direct current signal into an alternating current signal; the input end of the second inverter circuit 3 is connected with the power supply 1 and used for converting an input direct current signal into an alternating current signal; the first end of the integrated transformer 4 is connected with the output end of the first inverter circuit 2, and the second end of the integrated transformer 4 is connected with the output end of the second inverter circuit 3; a first end of the first conversion circuit 5 is connected with a third end of the integrated transformer 4, and a second end of the first conversion circuit 5 is connected with a high-voltage unit 11, such as a high-voltage battery pack, a load powered by a higher voltage, and the like, for converting an input electrical signal; a first end of the second conversion circuit 6 is connected with a fourth end of the integrated transformer 4, and a second end of the second conversion circuit 6 is connected with an electric load 12 for converting an input electric signal; a first end of the third conversion circuit 8 is connected with a fifth end of the integrated transformer 4, and a second end of the third conversion circuit 8 is connected with a low-voltage unit 13, such as a low-voltage battery pack, a load requiring a lower voltage for power supply, and the like, for converting an input electrical signal; the integrated controller 7 is connected to the first inverter circuit 2, the second inverter circuit 3, the first conversion circuit 4, and the second conversion circuit 5, respectively, and is configured to control the first inverter circuit 2, the second inverter circuit 3, the first conversion circuit 5, the second conversion circuit 6, and the third conversion circuit 8 according to bus information of the rail vehicle.
Further, as shown in fig. 2, for a circuit topology diagram of the auxiliary converter in each car, DC supplies power to the DC source, and when the car operates, the first switch K1 is first activated, the first resistor R1 precharges the rear-end circuit, the second switch K2 is activated, and the signals are transmitted to the first inverter circuit 2 and the second inverter circuit 3 through the fuses F1 and F2, and the specific operation mode is as follows: the integrated controller 7 controls the Q1\ Q2\ Q3\ Q4 first inverter circuit 2 to work, the electric signal is output to the first conversion circuit 5, the second conversion circuit 6 and the third conversion circuit 8 through the integrated transformer 4, and the switch tube Qn in the three circuit modules can be selectively controlled through the integrated controller 7, so that one circuit module can be controlled to work, or any two circuit modules or all three circuit modules work, or the integrated controller 7 controls the Q5\ Q6\ Q7\ Q8 second inverter circuit 3 to work, the electric signal is output to the first conversion circuit 5, the second conversion circuit 6 and the third conversion circuit 8 through the integrated transformer 4, and the switch tube Qn in the three circuit modules can be selectively controlled through the integrated controller 7, so that one circuit module, or any two circuit modules or all three circuit modules can be controlled to work, or, the integrated controller 7 controls the Q1\ Q2\ Q3\ Q4 first inverter circuit 2 and the Q5\ Q6\ Q7\ Q8 second inverter circuit 3 to work alternately, the electric signal is output to the first conversion circuit 5, the second conversion circuit 6 and the third conversion circuit 8 through the integrated transformer 4, and the switch tube Qn in the three circuit modules can be selectively controlled through the integrated controller 7, so that one circuit module can be controlled to work, or any two circuit modules can be controlled, or all three circuit modules can be controlled to work, or the integrated controller 7 controls the high-voltage electric unit, namely the battery, connected with the first conversion circuit 5 to supply power, controls the Q9\ Q10 to make the first conversion circuit 5 output the electric signal to the integrated transformer 4, then the electric signal is transmitted to other circuit modules through the integrated transformer 4, and the switch tube Qn in each circuit module can be selectively controlled through the integrated controller 7, therefore, any one circuit module or any combination thereof can be controlled to perform work output, or the integrated controller 7 controls the low-voltage unit, namely the low-voltage battery, connected with the third conversion circuit 8 to supply power, and controls the Q13\ Q14\ Q15\ Q16 to enable the third conversion circuit 8 to output an electric signal to the integrated transformer 4, and then the electric signal is supplied to other circuit modules through the integrated transformer 4, and the switching tube Qn in each circuit module can be selectively controlled through the integrated controller 7, so that any one circuit module or any combination thereof can be controlled to perform work output.
Wherein, the first inverter circuit 2 and the second inverter circuit 3 are respectively connected with the power supply through the fuses F1 and F2, share the front-end capacitor and the resistor, F1 is connected in parallel with F2, if the F1 or F2 in the track auxiliary converter 10 fails, the effective circuit can transmit the electric signal to the failed circuit through the integrated transformer 4, recover the function of the failed circuit, and do not affect the normal operation of the track auxiliary converter 10, and if the F1 and the F2 fail simultaneously, the circuit modules can be switched with each other through the rear-stage circuit modules, namely, the first switching circuit 5 or the third switching circuit 8 supplies power, the integrated transformer 4 carries out reverse electric energy feedback, and the switching tube Qn in each circuit module can be controlled through the integrated controller 7, thereby selectively controlling the input electric signal of the circuit modules, realizing the functions of other circuit modules, enabling the circuit modules to be mutually multiplexed, and not affecting the normal operation of the track auxiliary converter 10, the safety and reliability of the track auxiliary converter 10 are improved, and when the track auxiliary converter 10 works, the first inverter circuit 2 and the second inverter circuit 3 can be controlled to perform staggered work, that is, the on-time of the switching tubes in the first inverter circuit 2 and the second inverter circuit 3 is subjected to phase staggering treatment, so that the ripple effect is reduced, and the EMC (Electro Magnetic Compatibility) interference is reduced.
Based on the structural block diagram and the circuit topology diagram of the auxiliary converter of the above embodiment and its modifications, the method for controlling the auxiliary converter of the rail vehicle of the embodiment of the present invention is explained below. In the embodiment of the present invention, for the arrangement of the transformer module in the auxiliary converter 10, an integrated transformer as proposed in the above embodiments may be adopted, or a plurality of independent transformers may be adopted, and for convenience of description, the above embodiment of the auxiliary converter is only an example of the integrated transformer, and is not a limitation to the specific structure and the protection scope of the present invention.
Fig. 3 is a flowchart of a method for controlling an auxiliary converter of a rail vehicle according to an embodiment of the present invention. As shown in fig. 3, the method of controlling the auxiliary inverter of the railway vehicle according to the embodiment of the present invention at least includes steps S1-S3. The rail vehicle comprises N carriages, wherein N is an integer larger than 1.
And step S1, acquiring the current value required by the whole vehicle.
Specifically, the whole vehicle main control device can determine the whole vehicle required current value according to the running working condition of the vehicle, and start the whole vehicle required current value to the whole vehicle bus. And then the integrated controller of the auxiliary converter of each compartment can obtain the current value required by the whole vehicle through the bus.
And step S2, sequentially authorizing the integrated controllers of the N sections of car converters according to a preset sequence so as to sequentially control the corresponding converters to output auxiliary currents.
Specifically, the preset sequence may be a sequence of physical positions of the cars, such as car 1, car 2, car 3 … to car N, or an authorized sequence may be set according to odd and even numbers of the cars to improve the balance of the start of the auxiliary converter, or a start sequence of the auxiliary converter may be set according to other requirements or specific situations.
For example, when the auxiliary converters need to be started, the auxiliary converters of N cars are controlled to be started according to a preset sequence, for example, the integrated controller of the auxiliary converter of car 1 is authorized to start the auxiliary converter of car 1, when the current required by the whole car cannot be met, the integrated controller of the auxiliary converter of car 3 is further authorized to drive the integrated controller of the auxiliary converter of car 3 to start the auxiliary converter of car 2, and so on, the auxiliary converters of odd cars can be set to be started first, and then the auxiliary converters of even cars can be started. Alternatively, the starting may be performed in the order of the cars, or in another order, and the preset order is not particularly limited herein.
And step S3, until the total auxiliary current value reaches the total vehicle demand current value, or until the converters of the N carriages are all started.
Specifically, when the auxiliary converter is started, the currently authorized integrated controller obtains a total auxiliary current value, and when the total auxiliary current value reaches a current value required by the whole vehicle, the subsequent auxiliary converter is not required to be started; or, if the currently authorized integrated controller determines that the output current value of the auxiliary converter corresponding to the carriage exceeds the set auxiliary current threshold value of the carriage, the currently authorized integrated controller determines that the total auxiliary current value cannot reach the required current of the whole vehicle, and then the currently authorized integrated controller continues to request the starting of the auxiliary converters in sequence until the required current of the whole vehicle is met. Or the converters in the N carriages are all started, and then warning is carried out or the load of the whole vehicle is requested to be reduced.
According to the method for controlling the auxiliary current transformer of the railway vehicle, the integrated controller in each compartment controls the current transformer of the corresponding compartment to start, the communication between the compartments is realized through a bus, namely, a plurality of independent controllers of each compartment are integrated, the auxiliary current control is realized based on the integrated controller of each current transformer, the corresponding current transformers are controlled to start according to the preset sequence, the mutual communication between the independent controllers can be reduced, the control is realized through the integrated controller of each compartment, the response speed is improved, and the working modules of the compartments are adjusted according to the power supply responsibility, so that the working efficiency of the whole vehicle is improved.
Further, in some embodiments, authorizing the integrated controllers of the N car converters according to the preset sequence to sequentially control the corresponding converters to output the auxiliary current may be implemented in the following manner. Specifically, the integrated controller of the nth car converter controls the converter of the nth car to start, and when the current value of the auxiliary current output by the converter of the nth car exceeds the current threshold value of the converter of the nth car, a current request is sent to a bus, wherein N is an integer and is less than or equal to N. The integrated controller of the (n + 1) th car converter receives the current request, controls the (n + 1) th car converter to start, and sends the current request to the bus when determining that the auxiliary current value output by the converter of the (n + 1) th car exceeds the current threshold value of the (n + 1) th car converter, wherein the (n + 1) th car is a sequential car of the (n) th car arranged according to a preset sequence. And analogizing until the total auxiliary current value reaches the required current value of the whole vehicle, or until the converters of the N carriages are all started.
Specifically, according to the structural block diagram of the auxiliary converter shown in fig. 1, the auxiliary converter is arranged in a car of a railway vehicle, that is, a plurality of independent controllers in each car are integrated to form an integrated controller, the integrated controller in the car controls the corresponding auxiliary converter to start, and a plurality of independent controllers are not required to operate and control independently, so that a plurality of independent controllers are not required to communicate with each other in each auxiliary converter, the response speed is increased, and the integrated controller performs the intercommunication between the cars through a bus.
The integrated controller of the converter of the nth compartment controls the converter of the nth compartment to start, the integrated controller of the nth compartment judges whether an auxiliary current value output by the converter meets a current value required by a finished vehicle, if so, the integrated controller of the nth compartment starts the rail vehicle to operate according to the auxiliary current value output by the converter of the nth compartment, if not, when the integrated controller of the nth compartment determines that the auxiliary current value output by the converter exceeds a current threshold value of the converter of the nth compartment, a current request is sent to a bus, according to bus information and a preset sequence, the integrated controller of the converter of the (n + 1) th compartment receives the current request and controls the converter of the (n + 1) th compartment to start, and the integrated controller of the (n + 1) th compartment judges whether the auxiliary current value output by the converter meets the current value required by the finished vehicle or not, if so, and starting the rail vehicle to run by using the auxiliary current value superposed and output by the converter of the nth compartment and the converter of the (N + 1) th compartment together, if the auxiliary current value is not met, sending a current request to a bus when the integrated controller of the (N + 1) th compartment determines that the output auxiliary current value exceeds the current threshold value of the converter of the (N + 1) th compartment, enabling the integrated controller in the next compartment to control the converter to start according to a preset sequence, and repeating the steps until the total auxiliary current value reaches the current value required by the whole vehicle, or starting the converters of the N compartments.
For example, as shown in fig. 4 and fig. 5, which are distribution diagrams of an auxiliary converter and an integrated controller in a car, respectively, in fig. 6, the auxiliary converter 10 is referred to as an auxiliary transformer for short, a master control sequence is defaulted when a rail vehicle starts to operate, and mutual monitoring is performed, that is, the auxiliary transformer 1 starts to operate and monitor in the sequence of the auxiliary transformer 1, the auxiliary transformer 2, and the auxiliary transformer 3 to the auxiliary transformer n, and the auxiliary transformer 1 starts to operate and monitor the auxiliary transformer 2 when a load increases, and a current threshold is set at the same time. Specifically, at the initial running stage of the rail vehicle, the integrated controller defaulting to the auxiliary converter 1 controls the auxiliary converter to start to work, if the output current of the auxiliary converter exceeds the upper limit, namely the output current exceeds the set current threshold, the auxiliary converter defaulting to the auxiliary converter 1 sends current request information to a bus, at the moment, the integrated controller defaulting to the 2 sequence controls the auxiliary converter to start to work … … in the same way until the total auxiliary current value reaches the required current value of the whole vehicle, or until the converters of the N carriages are started.
When the load of the railway vehicle is small, the auxiliary converter of one carriage or part of carriages can be selected to work, namely the current value required by the current railway vehicle is met, so that mutual communication is reduced, the working loss is reduced, and the operating efficiency is improved.
According to the method for controlling the auxiliary current transformer of the railway vehicle, a plurality of independent controllers in the auxiliary current transformer are integrated, namely a plurality of original independent transformers are integrated, for example, three independent transformers are integrated, the integrated controller in the embodiment of the invention is used for controlling the current transformers in corresponding carriages to be started sequentially through the integrated controller according to a preset starting sequence of the current transformers, and the mutual communication among all the carriages is realized through a bus, so that not only are circuit modules saved and the cost reduced, but also the mutual communication among the independent controllers is reduced, namely the mutual communication in the whole vehicle is reduced, the control mode of the whole vehicle is more flexible, the response speed is improved, meanwhile, according to the current value requirement of the whole vehicle, the starting work of partial current transformers can be selected and controlled, the loss of the whole vehicle is reduced, and a plurality of carriages are responsible for adjusting work modules according to power supply, the operation efficiency is improved.
In an embodiment, the method for controlling the auxiliary converter of the rail vehicle according to the embodiment of the invention further includes controlling the started converter to stop outputting the auxiliary current according to a reverse order of the preset order when the current value required by the whole vehicle is reduced until the total auxiliary current value is reduced to the current value required by the whole vehicle. For example, the rail vehicle starts operation in the sequence of auxiliary transformer 1, auxiliary transformer 2, auxiliary transformer 3-auxiliary transformer n by default, if the current finished vehicle starts the auxiliary current transformer defaulted to auxiliary transformer 1-auxiliary transformer 5 according to the preset sequence, when the current value of the current required current of the finished vehicle is detected to be reduced, namely the current value of the current required current of the rail vehicle is smaller than the set current threshold value, the current transformer defaulted to auxiliary transformer 5 is controlled to stop operation, and stop information is sent to the bus, if the current value of the current required current of the finished vehicle is still reduced, the current transformer defaulted to auxiliary transformer 4 is controlled to stop operation in the reverse sequence, and the stop information is sent to the bus, and so on until the total auxiliary current value is reduced to the current value required by.
In an embodiment, the method for controlling the auxiliary converter of the railway vehicle further includes that when the converters of the N cars are all started and the total auxiliary current value is smaller than the current value required by the whole vehicle, the integrated controller which finally starts the converters in the N cars sends warning information to the bus.
In an embodiment, the method for controlling the auxiliary converter of the railway vehicle further includes that the integrated controller of the (n + 1) th car converter judges that the (n + 1) th car converter executes starting according to the bus information, and if the starting success information fed back by the (n + 1) th car converter is not received within a preset time, the (n + 1) th car converter is controlled to start, and failure information of the (n + 1) th car converter is sent to the bus.
Or after the integrated controller of the nth compartment converter controls the converter to start, determining that the converter fails to start according to the auxiliary current value output by the nth compartment converter, and feeding back start failure information to the bus, and after the integrated controller of the n +1 th compartment converter receives the start failure information fed back by the nth compartment converter, controlling the n +1 th compartment converter to start and sending the failure information of the nth compartment converter to the bus. Further, the integrated controller of the nth car converter determines that the number of times of failed start-up of the nth car converter reaches a preset number of times, and then sends start-up failure information to the bus.
Specifically, for the failure detection mode of the track auxiliary converter, a starting time threshold value can be set in the track auxiliary converter, if the track auxiliary converter defaulting to the auxiliary converter 2 is started, the track auxiliary converter defaulting to the auxiliary converter 3 does not receive starting success information fed back by the converter defaulting to the auxiliary converter 2 within a preset time, the converter defaulting to the auxiliary converter 3 is controlled to be started, the converter failure information defaulting to the auxiliary converter 2 is sent to a bus, or the track auxiliary converter defaulting to the auxiliary converter 2 is still unsuccessful after multiple starting attempts, starting failure information is fed back to the bus, the track auxiliary converter defaulting to the auxiliary converter 3 is controlled to be started, and meanwhile the track auxiliary converter failure information defaulting to the auxiliary converter 2 is sent. In the embodiment, a plurality of detection conditions may be set, and the conditions may be set according to needs or actual situations so as to control the operation of the rail vehicle.
In an embodiment, the method for controlling the auxiliary current transformer of the railway vehicle further comprises the steps that the integrated controller of each carriage current transformer obtains the current value required by the whole vehicle from the bus, and sends the identity information, the current transformer state and the current transformer output auxiliary current value to the bus.
The method for controlling the auxiliary current transformer of the rail vehicle according to the embodiment of the present invention is further described in detail with reference to fig. 4 and 5, each car is provided with an auxiliary current transformer, and each car has its own Identity information, that is, the ID (Identity information) of each car is sequentially set in the order of car 1, car 2, and car 3 to car n, when the rail vehicle is running, the integrated controller of each rail auxiliary current transformer is required to send its own current transformer state and the auxiliary current value output by the current transformer to the bus, the multiple cars receive the information, and the integrated controller of each car current transformer obtains the current value required by the entire vehicle from the bus. A master control sequence is defaulted when a rail vehicle starts and runs, the rail vehicle is started in sequence according to bus information and is monitored mutually, a current threshold value is set simultaneously, namely according to the ID of each carriage, the converter is controlled to start and work and is monitored by an integrated controller defaulted as a carriage 1, when a load is increased, namely the converter of the carriage 1 cannot meet the current requirement of the whole vehicle by default, a current request is sent to a bus, the integrated controller defaulted as a carriage 2 receives the bus information to start, namely, an auxiliary transformer 1 is started, an auxiliary transformer 2 is analogized, until the total auxiliary current value reaches the current value required by the whole vehicle, if the total auxiliary converter does not meet the current requirement of the rail vehicle in all work, the last rail auxiliary converter sends an alarm to the bus. And meanwhile, when the current is lower than the current threshold value, namely when the load is reduced, the car converters are closed one by one according to the reverse sequence of the preset sequence, if one converter fails, failure information is sent and rearranged by the master control, if the master control fails, the integrated controller in the next car is started to be used as the master control according to the default sequence, and the like, so that the normal operation of the railway vehicle is realized.
In summary, according to the method for controlling the auxiliary converter of the rail vehicle of the embodiment of the invention, the circuit modules are reduced, the circuit modules are saved, the cost is reduced, the circuit is integrated, the circuit size can be reduced, the arrangement of the whole vehicle is facilitated, meanwhile, the converter in the corresponding compartment is controlled to start sequentially through the integrated controller according to the preset starting sequence of the converter, the communication between each compartment is realized through the bus, the mutual communication between the independent controllers is reduced, namely the mutual communication in the whole vehicle is reduced, the control mode of the whole vehicle is more flexible, the response speed and the safety reliability are improved, the converter can be selected to start to work according to the power supply requirement of the whole vehicle, the loss of the whole vehicle is reduced, and the working modules are adjusted according to the power supply charge of a plurality of compartments, the operation efficiency is improved.
The second embodiment of the present invention proposes a rail vehicle, as shown in fig. 6, which includes N cars 20 and a bus 30. Wherein, each carriage 20 is provided with an auxiliary converter 10, and N is an integer greater than 1.
Specifically, as shown in fig. 1, each auxiliary converter 10 includes a transformer module and an integrated controller 7, and the integrated controller 7 communicates through a bus to implement the method for controlling the auxiliary converter of the rail vehicle provided in the above embodiment.
Further, as shown in fig. 7, the transformer module of each auxiliary converter 10 may comprise a plurality of independent transformers S4, such as three, or, as shown in fig. 8, the transformer module of each auxiliary converter 10 may comprise one integrated transformer 4. Specifically, the Power source 1, such as a Power supply network, supplies Power to the auxiliary converter 10, and distributes and transmits an electrical signal through a PDU14(Power Distribution Unit), so that the integrated controller 7 can control a plurality of transformers S4 or one integrated transformer 4 to supply the voltage required by the electric loads 12 at the rear end according to the bus information of the rail vehicle 100.
According to the rail vehicle 100 of the embodiment of the present invention, by adopting the method for controlling the auxiliary converter of the rail vehicle of the above-mentioned embodiment, that is, integrating a plurality of, for example, three independent controllers as the integrated controller in the embodiment of the present invention, the circuit module and the volume of the rail auxiliary converter 10 are reduced, the cost is saved, the layout of the whole vehicle is facilitated, meanwhile, the auxiliary converter 10 in the corresponding compartment is controlled to start by the integrated controller 7, the communication between each compartment 20 is realized by the bus, the mutual communication between the plurality of independent controllers is reduced, that is, the mutual communication in the whole vehicle is reduced, so that the safety, reliability and the operation efficiency are improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A method of controlling a rail vehicle auxiliary converter, wherein the rail vehicle comprises N cars, each car having an auxiliary converter disposed thereon, each auxiliary converter comprising a transformer module and an integrated controller, the integrated controllers communicating via a bus, wherein N is an integer greater than 1, the method comprising:
acquiring a required current value of the whole vehicle;
authorizing the integrated controllers of the N sections of carriage converters according to a preset sequence so as to sequentially control the corresponding converters to output auxiliary currents;
and starting the converters of the N carriages until the total auxiliary current value reaches the required current value of the whole vehicle or the total auxiliary current value reaches the required current value of the whole vehicle.
2. The method of controlling a rail vehicle auxiliary converter according to claim 1, wherein authorizing the integrated controllers of the N car converters according to a preset sequence to sequentially control the corresponding converters to output auxiliary current comprises:
the method comprises the steps that an integrated controller of an nth compartment converter controls a converter of the nth compartment to start, and when it is determined that an auxiliary current value output by the converter of the nth compartment exceeds a current threshold value of the converter of the nth compartment, a current request is sent to a bus, wherein N is an integer and is less than or equal to N;
and the integrated controller of the (n + 1) th car converter receives the current request, controls the (n + 1) th car converter to start, and sends the current request to the bus when determining that the auxiliary current value output by the converter of the (n + 1) th car exceeds the current threshold value of the (n + 1) th car converter, wherein the (n + 1) th car is a sequential car of the (n) th car arranged according to a preset sequence.
3. The method of controlling a rail vehicle auxiliary converter according to claim 1, characterized in that the method further comprises:
and when the current value required by the whole vehicle is reduced, controlling the started converter to stop outputting the auxiliary current according to the reverse sequence of the preset sequence until the total auxiliary current value is reduced to the current value required by the whole vehicle.
4. The method of controlling a rail vehicle auxiliary converter according to claim 1, characterized in that the method further comprises:
and when the current transformers of the N sections of carriages are all started and the total auxiliary current value is smaller than the required current value of the whole vehicle, the integrated controller which finally starts the current transformers in the N sections of carriages sends warning information to the bus.
5. The method of controlling a rail vehicle auxiliary converter according to claim 2, characterized in that the method further comprises:
and the integrated controller of the (n + 1) th compartment converter judges that the (n) th compartment converter is started according to bus information, and if the starting success information fed back by the (n) th compartment converter is not received within preset time, the (n + 1) th compartment converter is controlled to be started, and failure information of the (n) th compartment converter is sent to the bus.
6. The method of controlling a rail vehicle auxiliary converter according to claim 2, characterized in that the method further comprises:
after the integrated controller of the nth compartment converter controls the converter to be started, the start failure of the converter is determined according to the auxiliary current value output by the nth compartment converter, and then start failure information is fed back to the bus;
and the integrated controller of the (n + 1) th compartment converter receives the starting failure information fed back by the (n + 1) th compartment converter, controls the (n + 1) th compartment converter to start and sends the failure information of the (n + 1) th compartment converter to the bus.
7. The method of controlling a rail vehicle auxiliary converter according to claim 6, characterized in that the method further comprises:
and the integrated controller of the nth compartment converter determines that the number of times of starting failure of the nth compartment converter reaches a preset number of times, and then sends the starting failure information to the bus.
8. A rail vehicle, comprising:
n sections of carriages and buses;
each said car is provided with an auxiliary converter, each said auxiliary converter comprising a transformer module and an integrated controller, said integrated controller communicating over said bus to implement the method of controlling a rail vehicle auxiliary converter of any of claims 1-7, wherein N is an integer greater than 1.
9. The rail vehicle of claim 8, characterized in that the transformer module of each auxiliary converter comprises a plurality of transformers.
10. The rail vehicle according to claim 8, characterized in that the transformer module of each auxiliary converter comprises an integrated transformer.
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| CN201911203668.5A CN112874302B (en) | 2019-11-29 | 2019-11-29 | Method for controlling a rail vehicle auxiliary converter and rail vehicle |
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| CN103825278A (en) * | 2012-11-15 | 2014-05-28 | 通用电气公司 | Power quality control |
| CN106274492A (en) * | 2015-05-27 | 2017-01-04 | 中车大连电力牵引研发中心有限公司 | Auxiliary converter device used for rail vehicle and rail vehicle |
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