CN112874302B - Method for controlling a rail vehicle auxiliary converter and rail vehicle - Google Patents
Method for controlling a rail vehicle auxiliary converter and rail vehicle Download PDFInfo
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- CN112874302B CN112874302B CN201911203668.5A CN201911203668A CN112874302B CN 112874302 B CN112874302 B CN 112874302B CN 201911203668 A CN201911203668 A CN 201911203668A CN 112874302 B CN112874302 B CN 112874302B
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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 train for signalling purposes
- B61L15/0018—Communication with or on the vehicle or 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
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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 carriage converters according to a preset sequence so as to sequentially control the corresponding converters to output auxiliary current; 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 problems, an embodiment of a 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, and 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 converter 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 the 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 regulated 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 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 layout 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; an electricity 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 a railway vehicle auxiliary converter according to an embodiment of the present invention will be described below with reference to the accompanying drawings, which can reduce mutual communication between converter controllers and improve response speed for a railway vehicle with 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 an auxiliary converter in each car, DC is a direct current source for supplying power, and when the car works, the first switch K1 is firstly closed, the first resistor R1 is used for precharging the back-end circuit, then the second switch K2 is closed, 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 working 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 can be controlled to work, or any two circuit modules or all three circuit modules work, or, the integrated controller 7 controls the first inverter circuit 2 of Q1\ Q2\ Q3\ Q4 and the second inverter circuit 3 of Q5\ Q6\ Q7\ Q8 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 switching 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, 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 enable the first conversion circuit 5 to output the electric signal to the integrated transformer 4, and then the electric signal is transmitted 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, therefore, any one circuit module or any combination of the circuit modules can be controlled to carry out work output, or the integrated controller 7 controls a low-voltage unit, namely a low-voltage battery, connected with the third conversion circuit 8 to supply power, and controls Q13\ Q14\ Q15\ Q16 to enable the third conversion circuit 8 to output an electric signal to the integrated transformer 4, then the electric signal is transmitted to other circuit modules through the integrated transformer 4, and the switching tubes Qn in each circuit module can be selectively controlled through the integrated controller 7, so that any one circuit module or any combination of the circuit modules can be controlled to carry out work output.
The first inverter circuit 2 and the second inverter circuit 3 are respectively connected with a power supply through fuses F1 and F2, a front-end capacitor and a front-end resistor are shared, the F1 and the F2 are connected in parallel, if the F1 or the F2 in the track auxiliary converter 10 fails, an effective circuit can transmit an electric signal to the failed circuit through the integrated transformer 4, the function of the failed circuit is recovered, the normal operation of the track auxiliary converter 10 is not influenced, if the F1 and the F2 fail simultaneously, the circuit modules can be switched with each other through a rear-stage circuit module, namely, the first inverter circuit 5 or the third inverter circuit 8 supplies power and carries out reverse electric energy feedback through the integrated transformer 4, the switch tube Qn in each circuit module can be controlled through the integrated controller 7, so that the electric signal input of the circuit modules can be selectively controlled, the functions of other circuit modules are realized, the circuit modules are multiplexed with each other, the normal operation of the track auxiliary converter 10 is not influenced, the safety and reliability of the track auxiliary converter 10 is improved, and when the track auxiliary converter 10 operates, the first inverter circuit 2 and the second inverter circuit 3 can be controlled to carry out interleaved operation, namely, the electromagnetic interference of the inverter circuit 2 and the electromagnetic interference in the track auxiliary converter is reduced, and the electromagnetic interference in the electromagnetic interference (electromagnetic 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 rail vehicle according to the embodiment of the present invention at least includes steps S1 to S3. The rail vehicle comprises N carriages, wherein N is an integer larger than 1.
And S1, acquiring a required current value of 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 S2, sequentially authorizing the integrated controllers of the N carriage converters according to a preset sequence so as to sequentially control the corresponding converters to output auxiliary current.
Specifically, the preset sequence may be in the sequence of the physical positions of the cars, such as car 1, car 2, car 3 \8230tocar N, or may be in the order of odd and even numbers of cars to set the authorized sequence to improve the balance of the start of the auxiliary converters, or to set the start sequence of the auxiliary converters 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 S3, 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, 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 a request is made to reduce the load of the whole vehicle.
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 as follows. 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 the 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 nth compartment converter 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 the current value required by the whole vehicle, if so, the integrated controller of the nth compartment converter starts the rail vehicle to run by 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 the current threshold value of the converter of the nth compartment, the integrated controller of the (N + 1) th compartment converter sends a current request to a bus, and according to the bus information and a preset sequence, the integrated controller of the (N + 1) th compartment converter 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 whole vehicle, if so, the current value output by the converter of the (N) th compartment and the current value output by the converter of the (N + 1) th compartment are overlapped to start the rail vehicle to run, if not, 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, a current request is sent to a bus, the integrated controller in the next compartment controls the converter to start according to a preset sequence, and so on until the total auxiliary current value reaches the current value required by the whole vehicle, or the converters of the N compartments are all started.
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 converter for short, a master control sequence is defaulted when a railway vehicle starts to operate, mutual monitoring is performed, that is, the auxiliary converter 1 starts to operate and monitor in the sequence of auxiliary converter 1, auxiliary converter 2, auxiliary converter 3 to auxiliary converter n, and when a load increases, the auxiliary converter 1 starts to operate and monitor the auxiliary converter 2, 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 transformer 1 controls the auxiliary converter to start to work, if the output current of the auxiliary converter exceeds the upper limit, namely the set current threshold is exceeded, the auxiliary converter defaulting to the auxiliary transformer 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, 823082308230, and so on until the total auxiliary current value reaches the required current value of the whole vehicle, or until the converters of N carriages are started.
When the load of the railway vehicle is small, the auxiliary converter of one of the carriages or part of the carriages can be selected to work, namely the required current value of the current railway vehicle is met, so that the 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, the integrated controllers serve as the integrated controllers in the embodiment of the invention, the current transformers in corresponding carriages are sequentially controlled to be started through the integrated controllers according to a preset current transformer starting sequence, and communication between each carriage is realized through a bus, so that circuit modules are saved, the cost is reduced, 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 a part of current transformers can be selected to be controlled, the loss of the whole vehicle is reduced, and a plurality of carriages are responsible for adjusting work modules according to power supply, and 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 the finished vehicle.
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 nth car converter is started according to the bus information, and if the starting success information fed back by the nth car converter is not received within a preset time, the (n + 1) th car converter is controlled to be started, and failure information of the nth 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, when the integrated controller of the nth car converter determines that the number of times of failed start-up of the nth car converter reaches the preset number, the integrated controller 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 variety of detection conditions can be set, and the conditions can 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.
In the following, a method for controlling an auxiliary current transformer of a railway vehicle according to an 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, an Identity profile (ID) of each car is sequentially set in the order of car 1, car 2, and car 3 to car n, when a railway vehicle is running, an integrated controller of each auxiliary current transformer needs to send its own current transformer state and an auxiliary current value output by the current transformer to a bus, a plurality of cars receive information, and an integrated controller of each car current transformer obtains a 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 starts an auxiliary transformer 2, and so on, 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 in the embodiment of the invention, the original plurality of independent controllers are integrated, so that the number of circuit modules is reduced, the circuit modules are saved, the cost is reduced, the circuit size can be reduced, the arrangement of the whole vehicle is facilitated, meanwhile, the converters in corresponding compartments are sequentially controlled to be started through the integrated controllers according to the preset starting sequence of the converters, the communication between each compartment is realized through a bus, the mutual communication among the plurality of 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 and reliability are improved, the converter can be selected to be started to work according to the power supply requirement of the whole vehicle, the loss of the whole vehicle is reduced, and the working modules of the plurality of compartments are adjusted according to the power supply, so that the operation efficiency is improved.
In a second embodiment of the present invention, a rail vehicle is provided, as shown in fig. 6, the rail vehicle includes N cars 20 and a bus 30. Wherein each car 20 is provided with an auxiliary converter 10, 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 individual 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 supply 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 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 auxiliary converter 10 of the rail vehicle are reduced, thereby saving the cost and facilitating the layout of the entire vehicle, and meanwhile, the integrated controller 7 controls the auxiliary converter 10 in the corresponding compartment to start, and the communication between each section of the compartment 20 is realized through the bus, thereby reducing the mutual communication between the plurality of independent controllers, that is, reducing the mutual communication in the entire vehicle, and further improving the safety, reliability and operation efficiency.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 present 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 present 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 (9)
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 carriage converters according to a preset sequence so as 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 until the converters of N carriages are all started;
wherein, authorize the integrated control ware of N section carriage converters according to predetermineeing the order to control in order and correspond converter output auxiliary current, include:
the method comprises the steps that an integrated controller of a converter of an nth compartment controls the converter of the nth compartment to be started, 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 compartment converter receives the current request, controls the (n + 1) th compartment 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 compartment exceeds the current threshold value of the (n + 1) th compartment converter, wherein the (n + 1) th compartment is a sequential compartment of the (n) th compartment which is arranged according to a preset sequence.
2. The method of controlling a rail vehicle auxiliary converter according to claim 1, further comprising:
and when the vehicle demand current value is reduced, controlling the started converter to stop outputting the auxiliary current according to the reverse order of the preset sequence until the total auxiliary current value is reduced to the vehicle demand current value.
3. The method of controlling a rail vehicle auxiliary converter according to claim 1, further comprising:
and when the converters of the N carriages are all started and the total auxiliary current value is smaller than the total vehicle demand current value, the integrated controller which finally starts the converters in the N carriages sends warning information to the bus.
4. The method of controlling a rail vehicle auxiliary converter according to claim 1, further comprising:
and the integrated controller of the (n + 1) th compartment converter judges that the nth compartment converter is started according to bus information, and if successful starting information fed back by the nth compartment converter is not received within preset time, the (n + 1) th compartment converter is controlled to be started, and failure information of the nth compartment converter is sent to the bus.
5. The method of controlling a rail vehicle auxiliary converter according to claim 1, further comprising:
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.
6. The method of controlling a rail vehicle auxiliary converter according to claim 5, 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.
7. A rail vehicle, comprising:
n sections of carriages and buses;
-each of said cars is provided with an auxiliary converter, each of said auxiliary converters comprising a transformer module and an integrated controller, said integrated controller communicating via said bus to implement the method of controlling a rail vehicle auxiliary converter of any of claims 1-6, wherein N is an integer greater than 1.
8. The rail vehicle of claim 7, characterized in that the transformer module of each auxiliary converter comprises a plurality of transformers.
9. The rail vehicle according to claim 7, 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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| 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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| CN112874302B true CN112874302B (en) | 2022-10-18 |
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| US9042129B2 (en) * | 2012-11-15 | 2015-05-26 | General Electric Company | System and method for controlling power in a distribution system |
| CN106274492B (en) * | 2015-05-27 | 2018-10-26 | 中车大连电力牵引研发中心有限公司 | Auxiliary converter device and rail vehicle used for rail vehicle |
| CN105004953B (en) * | 2015-07-21 | 2018-01-09 | 南车株洲电力机车研究所有限公司 | A kind of method for detecting current transformer working condition |
| CN108001466B (en) * | 2017-10-30 | 2022-03-29 | 青岛四方庞巴迪铁路运输设备有限公司 | Auxiliary alternating current power supply method for double-heading operation of railway vehicle |
| CN108649608B (en) * | 2018-05-31 | 2021-01-22 | 中国铁道科学研究院集团有限公司 | Auxiliary converter for rail train and starting control method thereof |
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