CN103684159B - Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage - Google Patents

Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage Download PDF

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Publication number
CN103684159B
CN103684159B CN201310660478.2A CN201310660478A CN103684159B CN 103684159 B CN103684159 B CN 103684159B CN 201310660478 A CN201310660478 A CN 201310660478A CN 103684159 B CN103684159 B CN 103684159B
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China
Prior art keywords
generation circuit
overvoltage
value
control method
duty cycle
Prior art date
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Application number
CN201310660478.2A
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Chinese (zh)
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CN103684159A (en
Inventor
管明华
谭志勇
姜捷
付明祥
宋维胜
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CRRC Dalian Co Ltd
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CNR Dalian Locomotive and Rolling Stock Co Ltd
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Publication date
Application filed by CNR Dalian Locomotive and Rolling Stock Co Ltd filed Critical CNR Dalian Locomotive and Rolling Stock Co Ltd
Priority to CN201310660478.2A priority Critical patent/CN103684159B/en
Publication of CN103684159A publication Critical patent/CN103684159A/en
Priority to PCT/CN2014/089315 priority patent/WO2015081768A1/en
Priority to AU2014265103A priority patent/AU2014265103B2/en
Priority to NZ702197A priority patent/NZ702197A/en
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Publication of CN103684159B publication Critical patent/CN103684159B/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/26Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
    • H02P9/30Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/26Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
    • H02P9/30Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
    • H02P9/305Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices controlling voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Dc-Dc Converters (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage of the present invention, set auxiliary power generation circuit voltage reference value, detection auxiliary power generation circuit actual voltage value, the two difference is sent into PI regulating calculation, uses PI result of calculation to generate PWM waveform, drive auxiliary generator exciting current, it is characterized in that PWM duty cycle is detected, when PWM duty cycle is more than predetermined value P%, adjusts voltage reference value, and limit PWM output.Promote diesel engine speed, the problem of locomotive-auxiliary generating circuit overvoltage when solving the diesel engine slow-speed of revolution and air compressor machine work, not only ensure that electrical system safety but also meet the needs of locomotive manipulation.

Description

Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage
Technical field
The present invention relates to a kind of control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage, belong to railway locomotive technical field.
Background technology
Diesel locomotive auxiliary power generation circuit is converted into electrical power by exchanging the some mechanical power that export by diesel engine of locomotive of auxiliary generator, and is unidirectional current by rectifier bridge by AC conversion, it is provided that to the use such as locomotive control, partial electric system.When diesel engine shuts down, the accumulator battery that dependence locomotive carries is locomotive control, partial electric system provides electric energy.But battery group capacity is limited, it would be preferable to support the time that locomotive control, partial electric system are run is also limited.Therefore, under normal circumstances, after diesel engine operating, relying on auxiliary power generation circuit is locomotive control, partial electric system provides electric energy, is battery charging simultaneously.If during locomotive operation, auxiliary power generation circuit operation irregularity, then accumulator battery can provide electric energy temporarily, it is possible that cause part to control dysfunction;If operation irregularity frequently occurs auxiliary power generation circuit, the service life reduction of accumulator battery also can be caused.Coke oven controller generally adopts permanent reference mode, by PI control realization to auxiliary generator excitation con-trol, and then controls auxiliary power generation circuit voltage.According to electromotor external characteristics and adjustment characteristic, in the diesel engine slow-speed of revolution especially idling during air compressor machine work, owing to being subject to auxiliary generator capacity and bel-drivenn restriction, auxiliary power generation circuit voltage reduces, control system, in order to reach predetermined voltage reference, can increase excitation, but when reaching certain limit, it is further added by the power of excitation auxiliary power generation without obvious increase, is maintained at a below making voltage on a certain magnitude of voltage of predetermined voltage.This results in exciting current and is in full excited state; if now diesel engine speed improves, will result directly in auxiliary power generation acc power and jump, and then make auxiliary power generation circuit overvoltage; trigger overvoltage protection, and then a series of serious consequences such as locomotive unloading, auxiliary power generation power-off can be caused.Also have by Locomotive Microcomputer Control System, detect air compressor machine state, when air compressor machine works, forbid diesel engine speed regulation.But this will make diesel engine speed regulation be affected, the phenomenons such as speed governing sluggishness occur, makes driver and conductor think diesel engine speed regulation fault by mistake, affect locomotive manipulation.
Summary of the invention
The purpose of the present invention overcomes the deficiency of above-mentioned prior art exactly, it is provided that a kind of control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage.
The object of the present invention is achieved like this: a kind of control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage, set auxiliary power generation circuit voltage reference value (Vref), detection auxiliary power generation circuit actual voltage value (Vaux), the two difference is sent into PI regulating calculation, PI result of calculation is used to generate PWM waveform, drive auxiliary generator exciting current, it is characterized in that PWM duty cycle is detected, when PWM duty cycle is more than predetermined value P%, adjust voltage reference value Vref, and limit PWM output.
In order to realize the purpose of the present invention better, described PWM duty cycle predetermined value P% value is 70%.
In order to realize the purpose of the present invention better, the minima Vref_min value of described voltage reference value adjustable extent is the minimum permission voltage of electrical equipment.
In order to realize the purpose of the present invention better, the restriction scope value of described PWM output duty cycle is 1%-70%.
The solution of the present invention, promotes diesel engine speed, the problem of locomotive-auxiliary generating circuit overvoltage, not only ensure that electrical system safety but also meet the needs of locomotive manipulation when solving the diesel engine slow-speed of revolution and air compressor machine work.
Accompanying drawing explanation
Fig. 1 is the control method theory diagram preventing diesel locomotive auxiliary electricity generation circuit from overvoltage of the embodiment of the present invention.
Fig. 2 is the software flow block diagram of the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 1, the control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage of the present embodiment, its system operation logic is: after system start-up, initially enter frame 1.2 and carry out PWM duty cycle detection, last time, dutycycle compared (P% is preset as 70%) with default dutycycle P%, and exported result to 1.3;Dynamically adjusting at frame 1.3 voltage reference, according to PWM duty cycle comparative result, decide whether to adjust voltage reference, progressively adjusting voltage reference Vref within the specific limits if needing to adjust;Actual voltage value Vaux at frame 1.4 voltage acquisition auxiliary power generation circuit;At frame 1.5 using Vref and Vaux as initial conditions, carry out PI regulating calculation, obtain PWM duty cycle;Limit the actual output of PWM at frame 1.6, excitation system is carried out software protection.
Referring to Fig. 2, prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage, its software flow enters frame 2.2 after system start-up, it is judged that whether a upper cycle P WM dutycycle is more than default dutycycle P% (being preset as 70%): be enter frame 2.3, no entrance frame 2.7.Enter frame 2.3, dynamically adjust Vref, make Vref=Vref_old-Δ V.Enter frame 2.4, it is judged that whether Vref is more than Vref_min (minima of voltage reference adjustable extent, value is the minimum permission voltage of electrical equipment, for instance 64V): be enter frame 2.5, no entrance frame 2.6.Enter frame 2.5, update Vref_old, Vref_old=Vref.Enter frame 2.6, update Vref_old, Vref_old=Vref_min.Enter frame 2.7, detect auxiliary power generation circuit virtual voltage Vaux.Enter frame 2.8, using Vref and Vaux as input, carry out PI regulating calculation, and obtain PWM duty cycle.Entering frame 2.9, carry out PWM duty cycle export-restriction, its maximum restriction scope is at 1%-70%.Enter frame 2.10, drive exciting current.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit;Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement;And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (4)

1. the control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage, set auxiliary power generation circuit voltage reference value (Vref), detection auxiliary power generation circuit actual voltage value (Vaux), the two difference is sent into PI regulating calculation, uses PI result of calculation to generate PWM waveform, drive auxiliary generator exciting current, it is characterized in that PWM duty cycle is detected, when PWM duty cycle is more than predetermined value P%, adjusts voltage reference value Vref, and limit PWM output.
2. the control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage according to claim 1, it is characterised in that described PWM duty cycle predetermined value P% value is 70%.
3. the control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage according to claim 1, it is characterised in that the minima Vref_min value of described voltage reference value adjustable extent is the minimum voltage that electrical equipment allows.
4. the control method preventing diesel locomotive auxiliary electricity generation circuit from overvoltage according to claim 1, it is characterised in that the restriction scope value of described PWM output duty cycle is 1%-70%.
CN201310660478.2A 2013-12-05 2013-12-05 Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage Active CN103684159B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201310660478.2A CN103684159B (en) 2013-12-05 2013-12-05 Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage
PCT/CN2014/089315 WO2015081768A1 (en) 2013-12-05 2014-10-23 Control method for preventing auxiliary electricity generation circuit of internal combustion locomotive from over voltage
AU2014265103A AU2014265103B2 (en) 2013-12-05 2014-10-23 Control method for preventing auxiliary generator circuit of diesel locomotive from overvoltage
NZ702197A NZ702197A (en) 2013-12-05 2014-10-23 Control method for preventing auxiliary generator circuit of diesel locomotive from overvoltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310660478.2A CN103684159B (en) 2013-12-05 2013-12-05 Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage

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CN103684159B true CN103684159B (en) 2016-06-29

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WO (1) WO2015081768A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103684159B (en) * 2013-12-05 2016-06-29 中国北车集团大连机车车辆有限公司 Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage
CN110798108B (en) * 2019-11-07 2021-07-06 陕西航空电气有限责任公司 Grading unloading method for overvoltage suppression device of three-phase variable-frequency alternating-current power generation system
CN113949140B (en) * 2021-11-24 2023-11-10 中车大连机车车辆有限公司 Software control method for preventing storage battery from being charged and overvoltage

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CN102738770A (en) * 2012-06-29 2012-10-17 中国北车集团大连机车车辆有限公司 Unloading overvoltage control method for auxiliary power generation system of locomotive
CN202713220U (en) * 2012-03-15 2013-01-30 戚墅堰机车车辆厂工业公司 Internal combustion locomotive voltage regulator

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CN103684159B (en) * 2013-12-05 2016-06-29 中国北车集团大连机车车辆有限公司 Prevent the control method of diesel locomotive auxiliary electricity generation circuit from overvoltage

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Publication number Priority date Publication date Assignee Title
EP0735641A1 (en) * 1995-03-31 1996-10-02 Mitsubishi Denki Kabushiki Kaisha Charge control system for use in internal combustion engine
CN101951217A (en) * 2010-08-13 2011-01-19 株洲南车时代电气股份有限公司 Diesel locomotive auxiliary engine control device
CN202713220U (en) * 2012-03-15 2013-01-30 戚墅堰机车车辆厂工业公司 Internal combustion locomotive voltage regulator
CN102738770A (en) * 2012-06-29 2012-10-17 中国北车集团大连机车车辆有限公司 Unloading overvoltage control method for auxiliary power generation system of locomotive

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CN103684159A (en) 2014-03-26
WO2015081768A1 (en) 2015-06-11
AU2014265103A1 (en) 2015-06-25
NZ702197A (en) 2017-02-24
AU2014265103B2 (en) 2016-05-05

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