CN105553362A - Internal combustion locomotive main generator excitation control device - Google Patents
Internal combustion locomotive main generator excitation control device Download PDFInfo
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- CN105553362A CN105553362A CN201510902947.6A CN201510902947A CN105553362A CN 105553362 A CN105553362 A CN 105553362A CN 201510902947 A CN201510902947 A CN 201510902947A CN 105553362 A CN105553362 A CN 105553362A
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- excitation
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- combustion engine
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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
- H02P9/38—Self-excitation by current derived from rectification of both output voltage and output current of generator
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses an internal combustion locomotive main generator excitation control device comprising a power supply module, a first signal acquisition module used for acquiring voltage and current signals, a second signal acquisition module used for acquiring a frequency signal, an excitation current acquisition control module used for acquiring an excitation current signal of an internal combustion locomotive main generator and automatically adjusting the excitation current signal value of the internal combustion locomotive main generator, a switching input and output module used for detecting the current running mode of the internal combustion locomotive main generator and acquiring a corresponding switching signal, and a main control unit used for getting the current excitation control sampling data of the internal combustion locomotive main generator based on the voltage and current signals, the frequency signal and the excitation current signal and making the excitation current acquisition control module automatically adjust the excitation current signal value to achieve predetermined target excitation control data based on the current running mode and the excitation control sampling data of the internal combustion locomotive main generator. The device is of high system reliability, the signal at the output end is stable, and the fault protection function is perfect.
Description
Technical field
The present invention relates to locomotive excitation con-trol technology, relate to a kind of safeguard of main engine of combustion engine excitation controlling device specifically.
Background technology
Main generator is the main equipment of diesel locomotive, is dragged by diesel engine, sends three-phase alternating current supply locomotive traction motor and uses.Exciter control system is an important component part of main generator; according to the requirement of diesel engine, main generator and traction electric machine; regulate the exciting current of main generator; control the power invariability of the output of main generator; when main generator or traction electric machine fault, complete main generator defencive function.Good excitation con-trol mechanism is the important leverage that diesel locomotive normally runs.The quality of excitation system performance index is directly connected to main generator and can traction electric machine safe and stable operation.Although traditional analog exciter control system can meet the requirement of diesel locomotive, its governing speed is slow, hardware configuration is too complicated, and reliability reduces, and extensibility can not meet the requirement of current system.Along with the development of Digital Electronic Technique, the superior microcontroller of Performance And Reliability continues to bring out, and exciter control system is also more and more intelligent.
Summary of the invention
In view of the defect that prior art exists, the object of the invention is to provide a kind of safeguard of main engine of combustion engine excitation controlling device, it is high that this device has system reliability, and safeguard of main engine of combustion engine output end signal is stablized, and failure protection function waits effect comprehensively.
To achieve these goals, technical scheme of the present invention:
A kind of safeguard of main engine of combustion engine excitation controlling device, described safeguard of main engine of combustion engine excitation controlling device connects safeguard of main engine of combustion engine, it is characterized in that:
Described safeguard of main engine of combustion engine excitation controlling device comprises
For providing the supply module of power supply for device;
For gathering the first signal acquisition module of safeguard of main engine of combustion engine output end voltage current signal;
For gathering the secondary signal acquisition module of safeguard of main engine of combustion engine output frequency signal;
For gathering the exciting current signal of safeguard of main engine of combustion engine energized circuit, and automatically adjust the exciting current acquisition control module of the exciting current signal value of safeguard of main engine of combustion engine energized circuit based on the control signal of main control unit;
For detecting safeguard of main engine of combustion engine present mode of operation, and gather the On-off signal output module of corresponding on-off model;
Based on the excitation con-trol sampled data of above-mentioned voltage and current signal, frequency signal and exciting current signal acquisition Current internal combustion engines car owner generator, and in conjunction with safeguard of main engine of combustion engine present mode of operation and described excitation con-trol sampled data, control exciting current acquisition control module and automatically adjust exciting current signal value to reach the main control unit of predetermined target excitation con-trol data, described excitation con-trol sampled data comprises the exciting current of the voltage effective value of safeguard of main engine of combustion engine system, current effective value active power, reactive power and current energized circuit; Described target excitation con-trol data comprise constant voltage excitation con-trol data, constant current excitation con-trol data, invariable power excitation con-trol data, voltage restriction excitation con-trol data, current limit excitation con-trol data, Power Limitation excitation con-trol data.
Further; described safeguard of main engine of combustion engine excitation controlling device also comprises default detection and protection module; for real-time detection apparatus running status, namely the fault data that notes abnormalities carries out fault data storage and reports to the police to central control unit VCU, simultaneously trigger fault defencive function.
Further, described safeguard of main engine of combustion engine excitation controlling device also comprises communication module, and described communication module comprises ethernet communication module and MVB communication module; Described ethernet communication module is used for download online and upgrades corresponding control program, so that user's target setting excitation con-trol data; Described MVB communication module is used for central control unit VCU real time communication and uploads excitation con-trol sampled data.
Further, described safeguard of main engine of combustion engine excitation controlling device by built-in sensors supply module for each voltage/current sensor in this safeguard of main engine of combustion engine excitation controlling device provides power supply.
Further, described safeguard of main engine of combustion engine excitation controlling device adopts redundancy structure, comprises main control unit and the Standby control unit with described main control unit redundancy each other.
Compared with prior art, beneficial effect of the present invention:
The present invention is carried out closed loop cycle collection by each signal of combustion motor car owner generator output end and is regulated energized circuit circuit, effective guarantee safeguard of main engine of combustion engine output runs according to predetermined target excitation con-trol data, improves device reliability and operation stability etc.
Accompanying drawing explanation
Fig. 1 is safeguard of main engine of combustion engine excitation controlling device circuit theory schematic diagram of the present invention;
The circuit theory diagrams that Fig. 2 the first ac signal acquisition module of the present invention is corresponding;
The circuit theory diagrams that Fig. 3 the first direct current signal acquisition module of the present invention is corresponding;
The circuit theory diagrams that Fig. 4 secondary signal of the present invention acquisition module is corresponding.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.
Safeguard of main engine of combustion engine excitation controlling device mainly completes the control of main generator output voltage (middle dc voltage), electric current, power; traction control torque and the given control of torque LOADING RATES; low constant speed control; Redundant Control; main generator excitation loop and three-phase output protection, realize the functions such as exchanges data by MVB and VCU, TCU equipment.
The present invention devises the safeguard of main engine of combustion engine excitation controlling device based on closed-loop control, it is by each signal sampling module acquires and analyze excitation con-trol sampled data, and based on field circuit regulating and controlling, in conjunction with the target excitation con-trol data preset, complete safeguard of main engine of combustion engine automatic magnetic exciting and control adjustment process.
As shown in Figure 1, described device connects safeguard of main engine of combustion engine, and it comprises
For providing the supply module of power supply for device;
For gathering the first signal acquisition module of the voltage and current signal of safeguard of main engine of combustion engine, described voltage and current signal comprises d. c. voltage signal, DC current signal, ac voltage signal and ac current signal, described first signal acquisition module also directly can be divided into the first direct current signal acquisition module and the first ac signal acquisition module, corresponding circuit theory diagrams are as shown in Fig. 2-Fig. 3, 12 ADC chip settling signals at a high speed are all adopted to gather in figure, described first its ac input signal of ac signal acquisition module 0-1V decays 12 times by attenuator circuit as shown in Figure 2, signal after decay is exported to amplifier by analog switch ADG619 and is carried out one-level and amplify 5.5 times, signal adds that 100mV is biased to be entered secondary amplifier and carry out amplification 2 times again, signal carries out RMS-DC converter by real effective chip AD637 after exporting, ADC chip MC3201 is entered after conversion.MC3201 is communicated with main control unit (comprising STM32F407) by SPI interface.AD a reference source is exported by LM4120 to provide, and exports 2.048V, precision 0.2%; As shown in Figure 3, described first its direct-flow input signal of direct current signal acquisition module 0-1V decays 12 times by attenuator circuit, signal after decay is exported to amplifier by analog switch ADG619 and is carried out one-level and amplify 5.5 times, signal adds that 100mV is biased to be entered secondary amplifier and carry out amplification 2 times again, and signal enters AD (MC3201) by active power filtering after exporting.12 ADC chip MC3201 are communicated with main control unit by SPI interface, and adding biased is drift for eliminating front-end circuit.
For gathering the secondary signal acquisition module of the frequency signal of safeguard of main engine of combustion engine output, corresponding circuit theory diagrams as shown in Figure 4,12 ADC chip settling signals are at a high speed adopted to gather in figure, its frequency signal enters Direct driver high speed photo coupling by current-limiting resistance, and the timer pin that high speed photo coupling output enters into STM32F407 through 74LVC14 carries out frequency collection.
For gathering the exciting current signal of safeguard of main engine of combustion engine, and automatically adjust the exciting current acquisition control module of the exciting current signal value of safeguard of main engine of combustion engine based on the control signal of main control unit;
For detecting safeguard of main engine of combustion engine present mode of operation, and gather the On-off signal output module of corresponding on-off model, described operational mode comprises safeguard of main engine of combustion engine running status and operational mode, described safeguard of main engine of combustion engine running status comprises stopped status, trystate, no-load running state, band year state, and described operational mode comprises constant-pressure operation, constant current operation, output-constant operation mode;
Based on above-mentioned voltage and current signal, the excitation con-trol sampled data of frequency signal and exciting current signal acquisition Current internal combustion engines car owner generator, and in conjunction with safeguard of main engine of combustion engine present mode of operation and described excitation con-trol sampled data, control exciting current acquisition control module and automatically adjust exciting current signal value to reach the main control unit of predetermined target excitation con-trol data, based on the signal feedback process of excitation con-trol sampled data to complete the automatic adjustment to exciting current, to constant voltage, constant current, the adjustment of invariable power pattern, and voltage restriction, current limit, the automatic magnetic excitings such as Power Limitation control adjustment process.
Described excitation con-trol sampled data comprises the excitation data (mainly exciting current) of the voltage effective value of safeguard of main engine of combustion engine system, current effective value active power, reactive power and current energized circuit; Described target excitation con-trol data comprise constant voltage value, constant current, invariable power value, voltage limit (as restriction ceiling voltage can not higher than certain voltage value), current limit value, power limit.
Described safeguard of main engine of combustion engine excitation controlling device also comprises default detection and protection module, and for real-time detection apparatus running status, namely the fault data that notes abnormalities carries out fault data storage and report to the police to host computer.
Described safeguard of main engine of combustion engine excitation controlling device also comprises communication module, and described communication module comprises ethernet communication module and MVB communication module; Described ethernet communication model calling host computer, upgrades corresponding control program, so that user's target setting excitation con-trol data realize system firmware and application software upgrade simultaneously for download online; Described MVB communication module, is connected to the MVB of microcomputer network control system, with diesel locomotive control system Seamless integration-, for uploading excitation con-trol sampled data with VCU real time communication.
Described safeguard of main engine of combustion engine excitation controlling device by built-in sensors supply module for each voltage/current sensor in this safeguard of main engine of combustion engine excitation controlling device provides power supply.
Described safeguard of main engine of combustion engine excitation controlling device adopts redundancy structure, comprises main control unit and the Standby control unit with described main control unit redundancy each other.
Described main control unit and Standby control unit can adopt 32 RISC kernels of the up-to-date Cortex-M4F of ARM, and possess the process chip STM32F407 of floating point unit (FPU), master clock frequency, up to 168MHz, is enough to the engineering operation of tackling any complexity.
On hardware implementing, described excitation controlling device can adopt standard compliant 3U84TE casing structure, the excitation controller identical by two cover software and hardwares forms, adopt hot backup redundancy to improve system serviceability, adopt front leading-out mode and guarantee that real very software and hardware redundancy accomplished by two cover controllers, trouble-free quick automatic switching by technological means such as the communication technology, heartbeat detection and level signal redundancy detection.Often overlap excitation controller and comprise C-PS-1 sensor electrical source plate (on it integrated sensor supply module), C-PS-2 chassis power supply plate (on it integrated supply module), C-CPU-1 host CPU plate (on it integrated main control unit), C-DRV-1 excitation drive plate (on it integrated exciting current acquisition control module), C-AI-1 analog-to-digital conversion plate (integrated first signal acquisition module on it, secondary signal acquisition module), the circuit board plug-ins such as C-SIG-1 signal regulating panel (on it integrated switch amount input/output module), each circuit board is 3U normal structure (100 × 160mm).
Host CPU plate Redundancy Design, PWM port redundancy can also be adopted to design and input/output signal Redundancy Management simultaneously
(1) host CPU plate Redundancy Design
Two pieces of identical host CPU boards are contained in each controller inside, and work in hot standby mode, one piece is main control unit, and another block is standby control unit.When main control unit breaks down, system will automatically switch on standby control unit, can return to the original operating state of excitation unit after having switched, the handoff procedure between two host CPU plates at certain hour, as completed in 10ms.
(2) PWM port redundancy controls
PWM exports and is jointly completed by host CPU plate and C-DRV-1 excitation drive plate.Host CPU plate provides control command, and C-DRV-1 excitation drive plate realizes power drive; Every block C-DRV-1 excitation drive plate output loop is by respective Control, and when there is power device (metal-oxide-semiconductor) short circuit of drive plate, corresponding relay open circuit, cuts off out of order excitation drive plate output loop.
(3) input/output signal Redundancy Management
When transducer exports the analog signal for current mode, data acquisition is carried out by entering into respective C-AI-1 analog-to-digital conversion plate after the process of C-SIG-1 signal regulating panel simultaneously, namely realize on-off model to gather separately, exciting current of exciter signal gathers separately, locomotive speed gathers separately, and 0 ~ 50VDC input and output process separately.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (5)
1. a safeguard of main engine of combustion engine excitation controlling device, described safeguard of main engine of combustion engine excitation controlling device connects safeguard of main engine of combustion engine, it is characterized in that:
Described safeguard of main engine of combustion engine excitation controlling device comprises
For providing the supply module of power supply for device;
For gathering the first signal acquisition module of safeguard of main engine of combustion engine output end voltage current signal;
For gathering the secondary signal acquisition module of safeguard of main engine of combustion engine output frequency signal;
For gathering the exciting current signal of safeguard of main engine of combustion engine energized circuit, and automatically adjust the exciting current acquisition control module of the exciting current signal value of safeguard of main engine of combustion engine energized circuit based on the control signal of main control unit;
For detecting safeguard of main engine of combustion engine present mode of operation, and gather the On-off signal output module of corresponding on-off model;
Based on the excitation con-trol sampled data of above-mentioned voltage and current signal, frequency signal and exciting current signal acquisition Current internal combustion engines car owner generator, and in conjunction with safeguard of main engine of combustion engine present mode of operation and described excitation con-trol sampled data, control exciting current acquisition control module and automatically adjust exciting current signal value to reach the main control unit of predetermined target excitation con-trol data, described excitation con-trol sampled data comprises the exciting current of the voltage effective value of safeguard of main engine of combustion engine system, current effective value active power, reactive power and current energized circuit; Described target excitation con-trol data comprise constant voltage excitation con-trol data, constant current excitation con-trol data, invariable power excitation con-trol data, voltage restriction excitation con-trol data, current limit excitation con-trol data, Power Limitation excitation con-trol data.
2. safeguard of main engine of combustion engine excitation controlling device according to claim 1, is characterized in that:
Described safeguard of main engine of combustion engine excitation controlling device also comprises default detection and protection module; for real-time detection apparatus running status; namely the fault data that notes abnormalities carries out fault data storage and reports to the police to central control unit VCU, simultaneously trigger fault defencive function.
3. safeguard of main engine of combustion engine excitation controlling device according to claim 1, is characterized in that:
Described safeguard of main engine of combustion engine excitation controlling device also comprises communication module, and described communication module comprises ethernet communication module and MVB communication module; Described ethernet communication module is used for download online and upgrades corresponding control program, so that user's target setting excitation con-trol data; Described MVB communication module is used for central control unit VCU real time communication and uploads excitation con-trol sampled data.
4. safeguard of main engine of combustion engine excitation controlling device according to claim 1, is characterized in that:
Described safeguard of main engine of combustion engine excitation controlling device by built-in sensors supply module for each voltage/current sensor in this safeguard of main engine of combustion engine excitation controlling device provides power supply.
5. safeguard of main engine of combustion engine excitation controlling device according to claim 1, it is characterized in that: described safeguard of main engine of combustion engine excitation controlling device adopts redundancy structure, comprise main control unit and the Standby control unit with main control unit redundancy each other.
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| CN201510902947.6A CN105553362B (en) | 2015-12-09 | 2015-12-09 | Safeguard of main engine of combustion engine excitation controlling device |
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| CN201510902947.6A CN105553362B (en) | 2015-12-09 | 2015-12-09 | Safeguard of main engine of combustion engine excitation controlling device |
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| CN105553362B CN105553362B (en) | 2018-06-26 |
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Cited By (6)
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| CN106451359A (en) * | 2016-10-20 | 2017-02-22 | 重庆赛能软件技术有限公司 | Electric generator static excitation device multi-slave redundancy protection method |
| CN110082589A (en) * | 2019-06-26 | 2019-08-02 | 潍柴动力股份有限公司 | A kind of generator power test macro and method |
| CN111917359A (en) * | 2020-08-05 | 2020-11-10 | 中车大连机车车辆有限公司 | Control method for motor voltage of train alternating current auxiliary transmission system |
| CN112825464A (en) * | 2019-11-20 | 2021-05-21 | 株洲中车时代电气股份有限公司 | Excitation control device configured with multi-network redundancy |
| CN113406908A (en) * | 2021-06-04 | 2021-09-17 | 中国人民解放军海军工程大学 | Novel high-power motor excitation device and control system and control method thereof |
| CN113472268A (en) * | 2021-06-04 | 2021-10-01 | 中国人民解放军海军工程大学 | High-power motor excitation device and control method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451359A (en) * | 2016-10-20 | 2017-02-22 | 重庆赛能软件技术有限公司 | Electric generator static excitation device multi-slave redundancy protection method |
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| CN112825464A (en) * | 2019-11-20 | 2021-05-21 | 株洲中车时代电气股份有限公司 | Excitation control device configured with multi-network redundancy |
| CN112825464B (en) * | 2019-11-20 | 2023-03-14 | 株洲中车时代电气股份有限公司 | Excitation control device configured with multi-network redundancy |
| CN111917359A (en) * | 2020-08-05 | 2020-11-10 | 中车大连机车车辆有限公司 | Control method for motor voltage of train alternating current auxiliary transmission system |
| CN113406908A (en) * | 2021-06-04 | 2021-09-17 | 中国人民解放军海军工程大学 | Novel high-power motor excitation device and control system and control method thereof |
| CN113472268A (en) * | 2021-06-04 | 2021-10-01 | 中国人民解放军海军工程大学 | High-power motor excitation device and control method |
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