CN110798109A - Locomotive multi-module frequency converter alternating current auxiliary system and method - Google Patents
Locomotive multi-module frequency converter alternating current auxiliary system and method Download PDFInfo
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- CN110798109A CN110798109A CN201910980319.8A CN201910980319A CN110798109A CN 110798109 A CN110798109 A CN 110798109A CN 201910980319 A CN201910980319 A CN 201910980319A CN 110798109 A CN110798109 A CN 110798109A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/36—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using armature-reaction-excited machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/44—Control of frequency and voltage in predetermined relation, e.g. constant ratio
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Abstract
The invention discloses an alternating-current auxiliary system of a locomotive multi-module frequency converter, which comprises a central processing unit, the central processing unit and a frequency converter control unit, wherein the output end of the frequency converter control unit is electrically connected with the input end of a rotating speed sensor through a lead, the output end of the rotating speed sensor is electrically connected with the input end of a data receiving module through a lead, and the output end of the data receiving module is electrically connected with the input end of a first computing module through a lead. The locomotive multi-module frequency converter alternating-current auxiliary system and the method can realize the control of the operation of the auxiliary load through the arrangement of the plurality of frequency converters and the accurate control of the output of the frequency converters, when any one of the three frequency converters breaks down, relevant adjustment can be made through the frequency converter control unit, the stability of the operation of the system is ensured, meanwhile, the safety detection unit can detect the frequency converter fault, and the maintenance and the processing of follow-up managers are facilitated.
Description
Technical Field
The invention relates to the technical field of locomotives, in particular to an alternating current auxiliary system and method for a multi-module frequency converter of a locomotive.
Background
The frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the working power supply frequency mode of the motor, and mainly comprises a rectification unit (alternating current to direct current), a filtering unit, an inversion unit (direct current to alternating current), a braking unit, a driving unit, a detection unit microprocessing unit and the like.
The control equipment in the locomotive at present adopts the mode that the generator directly supplies power more, and this kind of mode utilization ratio of electric energy is low, can not control auxiliary generator's output voltage according to the concrete running condition of locomotive for auxiliary system operation poor stability is unfavorable for the normal operating of follow-up locomotive.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an alternating current auxiliary system and method for a locomotive multi-module frequency converter, which solve the problems that the utilization rate of electric energy is low and the output voltage of an auxiliary generator cannot be controlled according to the specific running condition of a locomotive by adopting a direct power supply mode of a generator.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a locomotive multi-module frequency converter alternating-current auxiliary system comprises a central processing unit, the central processing unit and a frequency converter control unit, wherein the output end of the frequency converter control unit is electrically connected with the input end of a rotating speed sensor through a lead, the output end of the rotating speed sensor is electrically connected with the input end of a data receiving module through a lead, the output end of the data receiving module is electrically connected with the input end of a first computing module through a lead, the output end of the first computing module is electrically connected with the input end of the central processing unit through a lead, the input end of the frequency converter control unit is electrically connected with the output end of an auxiliary load unit through a lead, the input end of the auxiliary load unit is electrically connected with the output end of the central processing unit through a lead, and the output end of the frequency converter control unit is electrically connected with the input end of a second, and the output of the second calculation module passes through the input electric connection of wire and central processing unit, the input of auxiliary load unit passes through the output electric connection of wire and detection module, the input of auxiliary load unit passes through the output electric connection of wire and converter, and the input of converter passes through the output electric connection of wire and central processing unit, the output of converter passes through the input electric connection of wire and voltage frequency regulation module, and the output of voltage frequency regulation module passes through the input electric connection of wire and central processing unit.
Preferably, the central processing unit is in bidirectional connection with the safety detection unit in a wireless manner, and the safety detection unit is in bidirectional connection with the frequency converter in a wireless manner.
Preferably, the output end of the central processing unit is electrically connected with the input end of the excitation adjusting module through a wire, and the output end of the excitation adjusting module is electrically connected with the input end of the matching module through a wire.
Preferably, the output end of the matching module is electrically connected with the input end of the central processing unit through a wire, the output end of the central processing unit is electrically connected with the input end of the storage unit, the storage unit is in bidirectional connection with the data retrieval extraction module through a wireless mode, and the input end of the data retrieval extraction module is electrically connected with the output end of the central processing unit through a wire.
Preferably, the output end of the data retrieval and extraction module is electrically connected with the input end of the wireless transmission module through a wire, and the input end of the wireless transmission module is electrically connected with the output end of the central processing unit through a wire.
Preferably, the wireless transmission module is in bidirectional connection with the display terminal wirelessly, and the frequency converter comprises a first frequency converter, a second frequency converter and a third frequency converter.
Preferably, the safety detection unit comprises a fault detection and analysis module, and the output end of the fault detection and analysis module is electrically connected with the input end of the integration processing module through a lead.
The invention also discloses an alternating current auxiliary method of the locomotive multi-module frequency converter, which specifically comprises the following steps:
s1, detecting the rotating speed of a diesel engine on the locomotive by controlling a rotating speed sensor through a frequency converter control unit, receiving a detected rotating speed result through a data receiving module, sending the detected rotating speed result to the inside of a first calculating module, and calculating the output voltage value of an auxiliary generator in the first calculating module;
s2, according to the output voltage value in S1, the central processing unit adjusts the excitation of the generator through the excitation adjusting module, and enables the output voltage of the generator to be matched with the rotating speed of the diesel engine through the matching module;
s3, detecting the auxiliary load unit through the detection module, controlling the second calculation module to calculate the data by the frequency converter control unit, calculating to obtain the output frequency, sending the data to the storage unit through the central processing unit for storage, and adjusting the output voltage frequency through the voltage frequency adjustment module by the frequency converter according to the calculation result data so as to control the auxiliary load;
s4, fault detection and analysis can be carried out on the first frequency converter, the second frequency converter and the third frequency converter in the frequency converter through a fault detection and analysis module in the safety detection unit, fault analysis results can be integrated through an integration processing module and sent to a display terminal through a wireless transmission module to be displayed;
and S5, if the calculation data in the storage unit is to be checked, the data in the storage unit can be retrieved and extracted through the data retrieval and extraction module and sent to the display terminal through the wireless transmission module for display, so that the whole work is completed.
Advantageous effects
The invention provides an alternating current auxiliary system and method for a locomotive multi-module frequency converter. The method has the following beneficial effects:
(1) the output end of the frequency converter control unit is electrically connected with the input end of the rotating speed sensor through a lead, the output end of the rotating speed sensor is electrically connected with the input end of the data receiving module through a lead, the output end of the data receiving module is electrically connected with the input end of the first computing module through a lead, the output end of the first computing module is electrically connected with the input end of the central processing unit through a lead, the input end of the frequency converter control unit is electrically connected with the output end of the auxiliary load unit through a lead, the input end of the auxiliary load unit is electrically connected with the output end of the central processing unit through a lead, the output end of the frequency converter control unit is electrically connected with the input end of the second computing module through a lead, and the output end of the second computing module is electrically connected with the input end of the central processing unit through a lead, the input end of the auxiliary load unit is electrically connected with the output end of the detection module through a lead, the input end of the auxiliary load unit is electrically connected with the output end of the frequency converter through a lead, the input end of the frequency converter is electrically connected with the output end of the central processing unit through a lead, the output end of the frequency converter is electrically connected with the input end of the voltage frequency regulation module through a lead, the output end of the voltage frequency regulation module is electrically connected with the input end of the central processing unit through a lead, the central processing unit is in bidirectional connection with the safety detection unit through wireless, the safety detection unit is in bidirectional connection with the frequency converter through wireless, the output end of the central processing unit is electrically connected with the input end of the excitation regulation module through a lead, the output end of the excitation regulation module is electrically connected with the input end of the matching module through a lead, and the output, the operation of setting control auxiliary load through a plurality of converters can be realized, the output of accurate control converter, when any one converter breaks down in the three converter, all can make relevant adjustment through converter control unit, guarantees the stability of system operation, and the safety inspection unit detectable converter trouble is located simultaneously, has made things convenient for follow-up managers' maintenance to handle.
(2) The output end of the central processing unit is electrically connected with the input end of the storage unit, the storage unit is in bidirectional connection with the data retrieval extraction module in a wireless mode, the input end of the data retrieval extraction module is electrically connected with the output end of the central processing unit in a wire mode, the related data calculated by the first calculation module and the second calculation module can be stored in time, the retrieval extraction is convenient to the display terminal, and the subsequent searching and using are convenient.
Drawings
FIG. 1 is a schematic block diagram of the architecture of the system of the present invention;
FIG. 2 is a schematic block diagram of the structure of the frequency converter of the present invention;
fig. 3 is a schematic block diagram of the structure of the safety detection unit of the present invention.
In the figure: 1-a central processing unit, 2-a frequency converter control unit, 3-a rotating speed sensor, 4-a data receiving module, 5-a first calculating module, 6-an auxiliary load unit, 7-a second calculating module, 8-a detecting module, 9-a frequency converter, 91-a first frequency converter, 92-a second frequency converter, 93-a third frequency converter, 10-a voltage frequency adjusting module, 11-a safety detecting unit, 111-a fault detecting and analyzing module, 112-an integrated processing module, 12-an excitation adjusting module, 13-a matching module, 14-a storage unit, 15-a data retrieving and extracting module, 16-a display terminal and 17-a wireless transmission module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, an embodiment of the present invention provides a technical solution: a locomotive multi-module frequency converter alternating current auxiliary system comprises a central processing unit 1, wherein the central processing unit 1 is used as an operation and control core of a computer system and is a final execution unit for information processing and program operation, the CPU has great development on logic structure, operation efficiency and function extension since self generation, the model of the central processing unit 1 is ARM9, the central processing unit 1 and a frequency converter control unit 2, the output end of the frequency converter control unit 2 is electrically connected with the input end of a rotating speed sensor 3 through a lead, the output end of the rotating speed sensor 3 is electrically connected with the input end of a data receiving module 4 through a lead, the output end of the data receiving module 4 is electrically connected with the input end of a first computing module 5 through a lead, the output end of the first computing module 5 is electrically connected with the input end of the central processing unit 1 through a lead, the input end of the frequency converter control unit 2 is electrically connected with the output end of an auxiliary load unit 6 through a lead, the input end of the auxiliary load unit 6 is electrically connected with the output end of the central processing unit 1 through a wire, the output end of the frequency converter control unit 2 is electrically connected with the input end of the second calculation module 7 through a wire, the output end of the second calculation module 7 is electrically connected with the input end of the central processing unit 1 through a wire, the input end of the auxiliary load unit 6 is electrically connected with the output end of the detection module 8 through a wire, the input end of the auxiliary load unit 6 is electrically connected with the output end of the frequency converter 9 through a wire, the input end of the frequency converter 9 is electrically connected with the output end of the central processing unit 1 through a wire, the output end of the frequency converter 9 is electrically connected with the input end of the voltage frequency adjusting module 10 through a wire, and the output end of the voltage frequency adjusting module 10 is electrically connected with the.
In the invention, the central processing unit 1 is in bidirectional connection with the safety detection unit 11 through wireless, and the safety detection unit 11 is in bidirectional connection with the frequency converter 9 through wireless.
In the invention, the output end of the central processing unit 1 is electrically connected with the input end of the excitation adjusting module 12 through a lead, and the output end of the excitation adjusting module 12 is electrically connected with the input end of the matching module 13 through a lead.
In the invention, the output end of the matching module 13 is electrically connected with the input end of the central processing unit 1 through a wire, the output end of the central processing unit 1 is electrically connected with the input end of the storage unit 14, the storage unit 14 is in bidirectional connection with the data retrieval and extraction module 15 through a wireless cable, and the input end of the data retrieval and extraction module 15 is electrically connected with the output end of the central processing unit 1 through a wire, so that the related data calculated by the first calculation module 5 and the second calculation module 7 can be stored in time, and is convenient to retrieve and extract to the display terminal 16, and the subsequent searching and use are convenient.
In the invention, the output end of the data retrieval extraction module 15 is electrically connected with the input end of the wireless transmission module 17 through a lead, the input end of the wireless transmission module 17 is electrically connected with the output end of the central processing unit 1 through a lead, the wireless transmission module 17 is a module for carrying out wireless transmission by utilizing a wireless technology, and is widely applied to the fields of computer wireless network, wireless communication, wireless control and the like, and the wireless transmission module 17 mainly comprises a transmitter, a receiver and a controller.
In the invention, the wireless transmission module 17 is in bidirectional connection with the display terminal 16 wirelessly, and the frequency converter 9 comprises a first frequency converter 91, a second frequency converter 92 and a third frequency converter 93.
In the present invention, the safety detection unit 11 includes a fault detection and analysis module 111, and an output end of the fault detection and analysis module 111 is electrically connected to an input end of the integrated processing module 112 through a wire.
The invention also discloses an alternating current auxiliary method for the locomotive multi-module frequency converter, which can realize that the operation of an auxiliary load is controlled by setting a plurality of frequency converters 9, the output of the frequency converters 9 is accurately controlled, when any one frequency converter 9 of three frequency converters 9 has a fault, relevant adjustment can be made through the frequency converter control unit 2, the stability of the operation of the system is ensured, meanwhile, the safety detection unit 11 can detect the fault of the frequency converter 9, and the maintenance and the processing of subsequent managers are facilitated, and the method specifically comprises the following steps:
s1, the frequency converter control unit 2 controls the rotation speed sensor 3 to detect the rotation speed of the diesel engine on the locomotive, the data receiving module 4 receives the detected rotation speed result and sends the detected rotation speed result to the first calculating module 5, and the output voltage value of the auxiliary generator is calculated in the first calculating module 5;
s2, according to the output voltage value in S1, the central processing unit 1 adjusts the excitation of the generator through the excitation adjusting module 12, and enables the output voltage of the generator to be matched with the rotating speed of the diesel engine through the matching module 13;
s3, the auxiliary load unit 6 is detected through the detection module 8, the frequency converter control unit 2 controls the second calculation module 7 to calculate the data, the output frequency is obtained through calculation, the data are sent to the storage unit 14 through the central processing unit 1 to be stored, and the frequency converter 9 adjusts the output voltage frequency through the voltage frequency adjustment module 10 according to the calculation result data, so that the auxiliary load is controlled;
s4, the failure detection and analysis module 111 inside the safety detection unit 11 can perform failure detection and analysis on the first frequency converter 91, the second frequency converter 92, and the third frequency converter 93 in the frequency converter 9, the integration processing module 112 can integrate and process the failure analysis results, and the integrated and processed results are sent to the display terminal 16 through the wireless transmission module 17 for display;
s5, if the calculation data in the storage unit 14 is to be checked, the data in the storage unit 14 can be retrieved and extracted by the data retrieval and extraction module 15, and sent to the display terminal 16 for display by the wireless transmission module 17, so as to complete the whole work.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a locomotive multimode converter exchanges auxiliary system, includes central processing unit (1), central processing unit (1) and converter the control unit (2), the input electric connection of wire and revolution speed sensor (3), its characterized in that are passed through to the output of converter the control unit (2): the output end of the rotating speed sensor (3) is electrically connected with the input end of the data receiving module (4) through a lead, the output end of the data receiving module (4) is electrically connected with the input end of the first computing module (5) through a lead, the output end of the first computing module (5) is electrically connected with the input end of the central processing unit (1) through a lead, the input end of the frequency converter control unit (2) is electrically connected with the output end of the auxiliary load unit (6) through a lead, the input end of the auxiliary load unit (6) is electrically connected with the output end of the central processing unit (1) through a lead, the output end of the frequency converter control unit (2) is electrically connected with the input end of the second computing module (7) through a lead, and the output end of the second computing module (7) is electrically connected with the input end of the central processing unit (1) through a lead, the input of auxiliary load unit (6) passes through the output electric connection of wire and detection module (8), the input of auxiliary load unit (6) passes through the output electric connection of wire and converter (9), and the input of converter (9) passes through the output electric connection of wire and central processing unit (1), the output of converter (9) passes through the input electric connection of wire and voltage frequency regulation module (10), and the output of voltage frequency regulation module (10) passes through the input electric connection of wire and central processing unit (1).
2. The locomotive multi-module frequency converter alternating-current auxiliary system according to claim 1, characterized in that: the central processing unit (1) is in bidirectional connection with the safety detection unit (11) in a wireless mode, and the safety detection unit (11) is in bidirectional connection with the frequency converter (9) in a wireless mode.
3. The locomotive multi-module frequency converter alternating-current auxiliary system according to claim 1, characterized in that: the output end of the central processing unit (1) is electrically connected with the input end of the excitation adjusting module (12) through a lead, and the output end of the excitation adjusting module (12) is electrically connected with the input end of the matching module (13) through a lead.
4. The locomotive multi-module frequency converter alternating-current auxiliary system according to claim 3, characterized in that: the output end of the matching module (13) is electrically connected with the input end of the central processing unit (1) through a wire, the output end of the central processing unit (1) is electrically connected with the input end of the storage unit (14), the storage unit (14) is in bidirectional connection with the data retrieval extraction module (15) through wireless, and the input end of the data retrieval extraction module (15) is electrically connected with the output end of the central processing unit (1) through a wire.
5. The locomotive multi-module frequency converter alternating-current auxiliary system according to claim 4, wherein: the output end of the data retrieval and extraction module (15) is electrically connected with the input end of the wireless transmission module (17) through a lead, and the input end of the wireless transmission module (17) is electrically connected with the output end of the central processing unit (1) through a lead.
6. The locomotive multi-module frequency converter alternating-current auxiliary system according to claim 5, characterized in that: the wireless transmission module (17) is in bidirectional connection with the display terminal (16) in a wireless mode, and the frequency converter (9) comprises a first frequency converter (91), a second frequency converter (92) and a third frequency converter (93).
7. The locomotive multi-module frequency converter alternating-current auxiliary system according to claim 2, characterized in that: the safety detection unit (11) comprises a fault detection and analysis module (111), and the output end of the fault detection and analysis module (111) is electrically connected with the input end of the integrated processing module (112) through a lead.
8. An alternating current auxiliary method for a locomotive multi-module frequency converter is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, controlling a rotating speed sensor (3) to detect the rotating speed of a diesel engine on the locomotive through a frequency converter control unit (2), receiving a detected rotating speed result through a data receiving module (4), sending the detected rotating speed result to the inside of a first calculating module (5), and calculating the output voltage value of an auxiliary generator in the first calculating module (5);
s2, according to the output voltage value in S1, the central processing unit (1) adjusts the excitation of the generator through an excitation adjusting module (12), and enables the output voltage of the generator to be matched with the rotating speed of the diesel engine through a matching module (13);
s3, the auxiliary load unit (6) is detected through the detection module (8), the frequency converter control unit (2) controls the second calculation module (7) to calculate the data, the output frequency is calculated, the data are sent to the storage unit (14) through the central processing unit (1) to be stored, and the frequency converter (9) adjusts the output voltage frequency through the voltage frequency adjustment module (10) according to the calculation result data, so that the auxiliary load is controlled;
s4, fault detection and analysis can be carried out on a first frequency converter (91), a second frequency converter (92) and a third frequency converter (93) in a frequency converter (9) through a fault detection and analysis module (111) in the safety detection unit (11), fault analysis results can be integrated through an integration processing module (112), and the integrated fault analysis results are sent to a display terminal (16) through a wireless transmission module (17) to be displayed;
s5, if the calculation data in the storage unit (14) needs to be checked, the data in the storage unit (14) can be retrieved and extracted through the data retrieval and extraction module (15), and the data are sent to the display terminal (16) through the wireless transmission module (17) to be displayed, so that the whole work is completed.
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| CN201910980319.8A CN110798109A (en) | 2019-10-15 | 2019-10-15 | Locomotive multi-module frequency converter alternating current auxiliary system and method |
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| CN201910980319.8A CN110798109A (en) | 2019-10-15 | 2019-10-15 | Locomotive multi-module frequency converter alternating current auxiliary system and method |
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Cited By (1)
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| CN113945781A (en) * | 2021-09-06 | 2022-01-18 | 上海宝康电子控制工程有限公司 | Frequency converter detection system and method |
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Application publication date: 20200214 |