CN101977005A - Hot-redundant control system of AC auxiliary excitation of locomotive - Google Patents
Hot-redundant control system of AC auxiliary excitation of locomotive Download PDFInfo
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- CN101977005A CN101977005A CN 201010507202 CN201010507202A CN101977005A CN 101977005 A CN101977005 A CN 101977005A CN 201010507202 CN201010507202 CN 201010507202 CN 201010507202 A CN201010507202 A CN 201010507202A CN 101977005 A CN101977005 A CN 101977005A
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Abstract
The invention relates to a hot-redundant control system of the AC auxiliary excitation of a locomotive. A first singlechip and a second singlechip are respectively provided with an excitation control module; the excitation control module of a host machine which is one of the first singlechip and the second singlechip acquires a PWM (Pulse-Width Modulation) signal according to the frequency parameters, the voltage parameters and the current parameters of an AC excited motor and a preset rule, transmits to the AC excited motor through an excitation output interface and controls the AC excited motor to work; the first singlechip and the second singlechip are connected with an excitation switch; and when the singlechip which is used as the host machine breaks down, the other singlechip is automatically started to be used as the host machine. The invention realizes the hot-redundant control of the AC auxiliary excitation of the locomotive by arranging two singlechips without occupying larger space of the locomotive and is easy to realize.
Description
Technical field
The present invention relates to locomotive and exchange the auxilliary excitation field of sending out, particularly a kind of locomotive exchanges the auxilliary hot redundancy control system of excitation of sending out.
Background technology
Along with the fast development of economy, railway traffic is more and more important, and the transport task of carrying is also more and more heavier.For transporting goods greatly, a row train often need dispose tens compartments and many locomotives, and many locomotive collaborative works are for this row train provides very strong driving force.When how to guarantee to break down, a plurality of locomotives still can collaborative work, is the technical barrier that need overcome but in this case.
Generally speaking, under many locomotive double heading situations, have only the foremost locomotive that the driver and conductor is just arranged, the multi-locomotive of back does not have the driver and conductor, if the auxilliary excitation of sending out of the interchange of the power set of multi-locomotive breaks down, can not manually fix a breakdown, just make easily that the auxilliary excitation fault locomotive of sending out takes place to exchange can not come into operation, and has a strong impact on the operation of this row train.Therefore, need to adopt exchange the auxilliary hot Redundancy Design of excitation of sending out, guarantee the interchange of locomotive auxilliary send out excitation if wherein one group normal, locomotive operation is just unaffected, improves the reliability and the security of operation of locomotive.
At present, exchanging the auxiliary generator excitation control method at locomotive mainly is PLC+IGBT (InsulatedGate Bipolar Transistor insulated gate twin-stage transistor npn npn) control mode.PLC gathers the parameters such as rotating speed, interchange auxiliary generator voltage and current signal that exchange auxiliary generator, calculates by control, and output pwm signal is regulated auxiliary generator exciting current size by IGBT again to IGBT.Two groups of IGBT cold standby redundancy each other can be set in this control mode, be difficult for realizing that heat is redundant.And the IGBT bulky, caloric value is big, and it is redundant each other that two groups of IGBT are set in limited locomotive inner space, and it is excessive to cause taking the locomotive inner space, is not easy to install, and is difficult to heat radiation, realizes problems such as cost is too high.
Summary of the invention
The purpose of this invention is to provide a kind of locomotive and exchange the auxilliary hot redundancy control system of excitation of sending out, the present invention is less because of the single-chip microcomputer volume, and heat dissipation capacity is little, and be convenient to install, two groups of chip microcontroller exchange additive excitation to locomotive hot Redundant Control is set, need not take the bigger space of locomotive, be easy to realize.
A kind of locomotive of the present invention exchanges the auxilliary hot redundancy control system of excitation of sending out, and comprises two interconnective first single-chip microcomputers and second singlechip, and field switch, and first single-chip microcomputer is connected with AC excitation motor respectively with second singlechip; Be provided with frequency signal input interface, voltage signal input interface and current information input interface on first single-chip microcomputer and the second singlechip separately, be respectively applied for relevant operational factors such as the frequency parameter that obtains AC excitation motor, voltage parameter, current parameters; First single-chip microcomputer and second singlechip are provided with the excitation control module, it in first single-chip microcomputer and the second singlechip excitation control module of the single-chip microcomputer of main frame, frequency parameter, voltage parameter, current parameters according to AC excitation motor, by default rule, obtain pwm control signal, be sent to AC excitation motor by the excitation output interface, the work of control AC excitation motor; First single-chip microcomputer is connected with field switch with second singlechip, and when breaking down for host SCM, startup is a main frame for another single-chip microcomputer automatically.
Preferably, first single-chip microcomputer and second singlechip have the fault self-checking module, whether the fault self-checking module detects self-operating and breaks down, in this way, by master and slave two digital input interfaces of fault output interface output operation normal signal to another single-chip microcomputer, stop host work, starting another sheet machine is main frame; As not, do not detect fault, be that main unit works on.
Preferably, first monolithic connect with second singlechip on be respectively equipped with the excitation feedback module, the excitation feedback module connects the coil of AC excitation motor, during as the fault output interface output operation normal signal of the single-chip microcomputer of main frame, whether the excitation feedback module detects the work of stream excitation electromotor according to the excitation feedback signal normal, in this way, do not adjust; As not, the single-chip microcomputer of adjusting work is a slave.
Preferably, first monolithic connect with second singlechip on be respectively equipped with monitoring module, the monitoring module that is in the single-chip microcomputer of stand-by state detects the single-chip microcomputer operation irregularity as main frame, wait for setting cycle after, automatically switch to the working cell main frame.
Preferably, described setting cycle is 3 WATCH DOG cycles.
Compared with prior art, the present invention has the following advantages:
The present invention is less because of the single-chip microcomputer volume, and heat dissipation capacity is little, and is convenient to install, and the hot Redundant Control of two groups of chip microcontroller to locomotive interchange additive excitation is set, and need not take the bigger space of locomotive, is easy to realize.
The present invention detects by fault output, and excitation detection feedback, three kinds of modes of Working Status Monitoring guarantee that two single-chip microcomputers can normally switch, and realizes that safer locomotive exchanges the auxilliary hot Redundant Control of excitation of sending out.
Description of drawings
Fig. 1 is the auxilliary hot redundancy control system schematic diagram of excitation of sending out for locomotive of the present invention exchanges;
Fig. 2 is auxilliary another schematic diagram of the hot redundancy control system of excitation of sending out for locomotive of the present invention exchanges.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Exchanging the auxilliary concrete operation principle of excitation of sending out is to detect locomotive to exchange auxiliary generator and alternative electric generation on off state, after detecting the alternative electric generation switch closure, exchanging the auxiliary generator rotating speed and rise to certain speed, control PWM copped wave excitation, begin generating, again by FEEDBACK CONTROL such as electric current and voltages, being feedback controlled to closed loop PID regulates automatically, control system is according to exchanging auxiliary generator rotational speed setup alternative electric generation desired value, detect simultaneously and exchange the auxiliary power generation value of feedback, automatically the duty ratio of control PWM ripple is regulated the exciting current that exchanges auxiliary generator.
The present invention designs the auxilliary hot redundancy control system of excitation of sending out of two groups of identical interchanges; comprise that one group of master control set and one group are from the control device; any one group of device fault; will automatically switch to another group; guarantee to have one group of device normally to devote oneself to work; improve the reliability of locomotive, guarantee the security of operation of locomotive.
Consult Fig. 1 and Fig. 2, locomotive of the present invention is shown exchanges the auxilliary hot redundancy control system schematic diagram of excitation of sending out, comprise two interconnective single-chip microcomputer 10A and single-chip microcomputer 10B, and field switch 12, wherein the structure of single-chip microcomputer 10A and single-chip microcomputer 10B is identical with operation principle.
Single-chip microcomputer 10A is connected with AC excitation motor 11 respectively with single-chip microcomputer 10B.Be provided with frequency signal input interface, voltage signal input interface and current signal input interface on single-chip microcomputer 10A and the single-chip microcomputer 10B separately, be respectively applied for relevant operational factors such as the frequency parameter that obtains AC excitation motor 11, voltage parameter, current parameters.
Single-chip microcomputer 10A and single-chip microcomputer 10B inside are provided with excitation control module 101, the excitation control module 101 of work single-chip microcomputer is according to frequency parameter, voltage parameter, the current parameters of AC excitation motor 11, by default rule, obtain pwm control signal, be sent to AC excitation motor 11 by the excitation output interface, 11 work of control AC excitation motor.
Single-chip microcomputer 10A is connected with field switch 12 with single-chip microcomputer 10B, and field switch 12 comprises the A/O/B third gear switch, switches to the A shelves, single-chip microcomputer 10A work, and single-chip microcomputer 10B is standby; Switch to the B shelves, single-chip microcomputer 10B work, single-chip microcomputer 10A is standby; Switch to 0 grade, single-chip microcomputer 10A and all break-ofves of single-chip microcomputer 10B.
Single-chip microcomputer 10A communicates by letter by RS485 with single-chip microcomputer 10B, mutually shares and the various data messages of monitoring, when monitoring one group when unusual, can accomplish clog-free automatic switchover.
During work, single-chip microcomputer 10A controls AC excitation motor 11 as mainboard work.Single-chip microcomputer 10B is in stand-by state.If single-chip microcomputer 10A breaks down, cisco unity malfunction, referring to table 1, single-chip microcomputer 10B starts, and begins AC excitation motor 11 is controlled.
Less because of the single-chip microcomputer volume, and heat dissipation capacity is little, and is convenient to install, and two groups of chip microcontroller is set locomotive is exchanged the hot Redundant Control of additive excitation, need not take the bigger space of locomotive, is easy to realize.
For realizing locomotive is exchanged the better control of additive excitation, also has fault self-checking module 102 on single-chip microcomputer 10A and the single-chip microcomputer 10B, whether fault self-checking module 102 detects self-operating and breaks down, in this way, by master and slave two digital input interfaces of fault output interface output operation normal signal (as " 1 ") to another single-chip microcomputer; Stop worker's host work, starting another single-chip microcomputer is main frame.As not, there is not detection failure, for host scm works on.
Monolithic connects on 10A and the single-chip microcomputer 10B and also is respectively equipped with excitation feedback control module 101, excitation control module 101 connects the coil of AC excitation motor 11, when the fault output interface output operation normal signal of the single-chip microcomputer of working, whether detect 11 work of stream excitation electromotor according to the excitation feedback signal normal, in this way, do not adjust; As not, the single-chip microcomputer of adjusting work is a slave, and another single-chip microcomputer is a main frame simultaneously.
Monolithic connects on 10A and the single-chip microcomputer 10B and also is respectively equipped with monitoring module 103, and the monitoring module 103 that is in the single-chip microcomputer of stand-by state detects the single-chip microcomputer operation irregularity as main frame, wait for setting cycle after, automatically switch to the working cell main frame.
Referring to table 1, single-chip microcomputer 10A and single-chip microcomputer 10B control logic mapping table are shown.
Table 1
According to table 17 kinds of situations are arranged, but 1,2,3, with 5,6,7 symmetries, therefore labor is carried out for four kinds in the front:
1), the working signal of single-chip microcomputer 10A is " 1 ", the working signal of single-chip microcomputer 10A is " 0 ", " A " shelves of field switch 12 electric, master and slave two digital input interfaces of single-chip microcomputer 10A obtain " 1 " and " 0 " signal respectively; Master and slave two digital input interfaces of single-chip microcomputer 10B also obtain " 1 " and " 0 " respectively, the fault output interface of single-chip microcomputer 10A and single-chip microcomputer 10B all is " 0 ", single-chip microcomputer 10A does not have fault, and single-chip microcomputer 10A work is main frame, and single-chip microcomputer 10B is " slave " and supervision single-chip microcomputer 10A.
2), the position of field switch 12 is the same, single-chip microcomputer 10A self detects, because of self reason causes single-chip microcomputer 10A fault, the fault output interface input " 1 " of single-chip microcomputer 10A, like this, two digital input interfaces of single-chip microcomputer 10A and single-chip microcomputer 10B all are " 1 ", and master-slave mode begins conversion, the work of single-chip microcomputer 10B catcher is main frame, single-chip microcomputer 10A fault.
3), the position of field switch 12 is the same, because of specific self reason (not installing as CPU software reset or A group) causes single-chip microcomputer 10A fault, but the fault output interface of single-chip microcomputer 10A output " 0 ", continue to detect the excitation feedback signal, it is normal all to detect the excitation feedback signal as single-chip microcomputer 10A and single-chip microcomputer 10B, single-chip microcomputer 10A work is main frame, and single-chip microcomputer 10B is " slave "; It is undesired all to detect the excitation feedback signal as single-chip microcomputer 10A and single-chip microcomputer 10B, and single-chip microcomputer 10B work is main frame, and single-chip microcomputer 10A is " slave ".
Simultaneously, also communicate by letter and judge by RS485, normal condition single-chip microcomputer 10A work is main frame, and single-chip microcomputer 10B is " slave ", as single-chip microcomputer 10A unusual (as the CPU software reset), single-chip microcomputer 10B monitors that single-chip microcomputer 10A is unusual, single-chip microcomputer 10B waits for 3 WATCH DOG cycles, and in 3 WATCH DOG cycles, it is normal that single-chip microcomputer 10A can recover, still work is main frame, and single-chip microcomputer 10A is " slave "; Single-chip microcomputer 10B waits for 3 WATCH DOG cycles, monitors that single-chip microcomputer 10A is unusual, and single-chip microcomputer 10B takes over work, and single-chip microcomputer 10A is a slave.
4), the position of field switch 12 is in " 0 ", two passages of two numeral inputs of single-chip microcomputer 10A and single-chip microcomputer 10B all are " 0 ", single-chip microcomputer 10A and single-chip microcomputer 10B do not work.
The present invention detects by fault output, and excitation detection feedback, three kinds of modes of Working Status Monitoring guarantee that two single-chip microcomputers can normally switch, and realizes that safer locomotive exchanges the auxilliary hot Redundant Control of excitation of sending out.
The above only is a preferred implementation of the present invention, does not constitute the qualification to protection range of the present invention.Any any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (5)
1. a locomotive exchanges the auxilliary hot redundancy control system of excitation of sending out, and it is characterized in that, comprises two interconnective first single-chip microcomputers and second singlechip, and field switch, and first single-chip microcomputer is connected with AC excitation motor with second singlechip; Be provided with frequency signal input interface, voltage signal input interface and current information input interface on first single-chip microcomputer and the second singlechip separately, be respectively applied for relevant operational factors such as the frequency parameter that obtains AC excitation motor, voltage parameter, current parameters;
First single-chip microcomputer and second singlechip are provided with the excitation control module, it in first single-chip microcomputer and the second singlechip excitation control module of the single-chip microcomputer of main frame, frequency parameter, voltage parameter, current parameters according to AC excitation motor, by default rule, obtain pwm control signal, be sent to AC excitation motor by the excitation output interface, the work of control AC excitation motor;
First single-chip microcomputer is connected with field switch with second singlechip, and when breaking down for host SCM, startup is a main frame for another single-chip microcomputer automatically.
2. the system as claimed in claim 1, it is characterized in that, first single-chip microcomputer and second singlechip have the fault self-checking module, whether the fault self-checking module detects self-operating and breaks down, in this way, by master and slave two digital input interfaces of fault output interface output operation normal signal to another single-chip microcomputer, stop host work, starting another single-chip microcomputer is main frame; As not, there is not detection failure, for host scm works on.
3. system as claimed in claim 2, it is characterized in that, first monolithic connect with second singlechip on be respectively equipped with the excitation feedback module, the excitation feedback module connects the coil of AC excitation motor, during as the fault output interface output operation normal signal of the single-chip microcomputer of main frame, whether the excitation feedback module detects the work of stream excitation electromotor according to the excitation feedback signal normal, in this way, do not adjust; As not, the single-chip microcomputer of adjusting work is a slave.
4. system as claimed in claim 2, it is characterized in that, first monolithic connect with second singlechip on be respectively equipped with monitoring module, the monitoring module that is in the single-chip microcomputer of stand-by state detects the single-chip microcomputer operation irregularity as main frame, after waiting for setting cycle, automatically switch to the working cell main frame.
5. system as claimed in claim 4 is characterized in that, described setting cycle is 3 WATCH DOG cycles.
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| CN 201010507202 CN101977005A (en) | 2010-09-27 | 2010-09-27 | Hot-redundant control system of AC auxiliary excitation of locomotive |
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| CN 201010507202 CN101977005A (en) | 2010-09-27 | 2010-09-27 | Hot-redundant control system of AC auxiliary excitation of locomotive |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103001316A (en) * | 2012-12-28 | 2013-03-27 | 广东康菱动力科技有限公司 | Intelligent control system for emergency generating set |
| CN103036306A (en) * | 2012-11-29 | 2013-04-10 | 湖北航达科技有限公司 | Digital dual-redundancy generator control system |
| CN104617839A (en) * | 2015-02-16 | 2015-05-13 | 中国北方车辆研究所 | Excitation device controlling method |
| CN105116798A (en) * | 2015-08-05 | 2015-12-02 | 苏州快诺优物联网技术有限公司 | Intelligent cabinet door controller with emergency standby function and working method |
| CN105425579A (en) * | 2015-12-23 | 2016-03-23 | 中车大连机车车辆有限公司 | Redundancy control method of locomotive |
| CN105529974A (en) * | 2016-01-26 | 2016-04-27 | 株洲南车时代电气股份有限公司 | Excitation control system for auxiliary generator of diesel locomotive and control method |
| CN106253417A (en) * | 2016-10-18 | 2016-12-21 | 江苏联通动力电池驱动系统有限公司 | A kind of double loop redundancy active equalization battery management system and control method thereof |
| CN110865587A (en) * | 2019-12-05 | 2020-03-06 | 中车大连电力牵引研发中心有限公司 | Input/output device based on discrete high-speed redundancy switching |
| CN112087047A (en) * | 2020-08-28 | 2020-12-15 | 广东瓦格耐电力科技有限公司 | Double-control system of generator set and control method thereof |
| CN114545842A (en) * | 2022-04-27 | 2022-05-27 | 长江三峡能事达电气股份有限公司 | Autonomous controllable distributed excitation control module |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036306A (en) * | 2012-11-29 | 2013-04-10 | 湖北航达科技有限公司 | Digital dual-redundancy generator control system |
| CN103001316A (en) * | 2012-12-28 | 2013-03-27 | 广东康菱动力科技有限公司 | Intelligent control system for emergency generating set |
| CN104617839B (en) * | 2015-02-16 | 2017-12-01 | 中国北方车辆研究所 | A kind of control method of excitation unit |
| CN104617839A (en) * | 2015-02-16 | 2015-05-13 | 中国北方车辆研究所 | Excitation device controlling method |
| CN105116798A (en) * | 2015-08-05 | 2015-12-02 | 苏州快诺优物联网技术有限公司 | Intelligent cabinet door controller with emergency standby function and working method |
| CN105425579A (en) * | 2015-12-23 | 2016-03-23 | 中车大连机车车辆有限公司 | Redundancy control method of locomotive |
| CN105425579B (en) * | 2015-12-23 | 2017-12-29 | 中车大连机车车辆有限公司 | locomotive redundancy control method |
| CN105529974B (en) * | 2016-01-26 | 2018-12-11 | 株洲南车时代电气股份有限公司 | A kind of diesel locomotive auxiliary generator exciter control system and control method |
| CN105529974A (en) * | 2016-01-26 | 2016-04-27 | 株洲南车时代电气股份有限公司 | Excitation control system for auxiliary generator of diesel locomotive and control method |
| CN106253417A (en) * | 2016-10-18 | 2016-12-21 | 江苏联通动力电池驱动系统有限公司 | A kind of double loop redundancy active equalization battery management system and control method thereof |
| CN110865587A (en) * | 2019-12-05 | 2020-03-06 | 中车大连电力牵引研发中心有限公司 | Input/output device based on discrete high-speed redundancy switching |
| CN112087047A (en) * | 2020-08-28 | 2020-12-15 | 广东瓦格耐电力科技有限公司 | Double-control system of generator set and control method thereof |
| CN112087047B (en) * | 2020-08-28 | 2023-04-28 | 广东瓦格耐电力科技有限公司 | Dual-control system of generator set and control method thereof |
| CN114545842A (en) * | 2022-04-27 | 2022-05-27 | 长江三峡能事达电气股份有限公司 | Autonomous controllable distributed excitation control module |
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Application publication date: 20110216 |