CN109980767A - A kind of double dynamical powering mode seamless handover method of locomotive - Google Patents
A kind of double dynamical powering mode seamless handover method of locomotive Download PDFInfo
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- CN109980767A CN109980767A CN201711448673.3A CN201711448673A CN109980767A CN 109980767 A CN109980767 A CN 109980767A CN 201711448673 A CN201711448673 A CN 201711448673A CN 109980767 A CN109980767 A CN 109980767A
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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims abstract description 67
- 230000005284 excitation Effects 0.000 claims description 39
- 230000005611 electricity Effects 0.000 claims description 36
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 2
- 101150110971 CIN7 gene Proteins 0.000 description 14
- 101100286980 Daucus carota INV2 gene Proteins 0.000 description 14
- 101150110298 INV1 gene Proteins 0.000 description 14
- 101100397044 Xenopus laevis invs-a gene Proteins 0.000 description 14
- 101100397045 Xenopus laevis invs-b gene Proteins 0.000 description 14
- 230000009977 dual effect Effects 0.000 description 6
- 239000002283 diesel fuel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C13/00—Locomotives or motor railcars characterised by their application to special systems or purposes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses a kind of double dynamical powering mode seamless handover method of locomotive, it adjusts initial power supply source and/or switches the output voltage of power supply source, make the output voltage of initial power supply source lower than switching power supply source, and the voltage value of initial power supply source is higher than the operating voltage of the first inverter and the second inverter, keeps the first inverter and the second inverter is in normal operating condition；Switching power supply source is connected, is connected simultaneously with Support Capacitor by switching power supply source and initial power supply source, is charged by the higher switching power supply source of voltage value, and initial power supply source is no longer powered substantially；After the voltage value of Support Capacitor is stablized, initial power supply source is cut off, completes the switching between different dynamic source.The present invention realizes the change of power source by adjusting the voltage difference between two kinds of different power supply sources; at least one power source charges to Support Capacitor at any time; it keeps the first inverter and the second inverter in operating status, need not be shut down when switching power, realize seamless switching.
Description
Technical field
The present invention relates to locomotive power supply technical fields, further relate to a kind of double dynamical powering mode seamless switching of locomotive
Method.
Background technique
In dual powered locomotive, current transformer tool is double dynamical there are two types of power resources, i.e. diesel engine power supply and contact net power supply
Any one power source is used to input when locomotive operation as power, dual powered locomotive needs the problem of switching in face of power source.
As shown in Figure 1, being the main circuit schematic diagram of dual powered locomotive；First inverter INV1 and the second inverter INV2 points
It is other to power to two traction electric machine M；When circuit is powered by contact net, contact net is by four-quadrant module QC1 to Support Capacitor
Cd charging, the voltage of Support Capacitor Cd is adjusted by four-quadrant module QC1；When circuit is powered by diesel engine, diesel engine passes through elder generation
It is closed excitation contactor KM4, then diesel engine output voltage is adjusted by excitation con-trol unit, and pass through uncontrollable rectification module
CON1 converts alternating current to direct current, charges to Support Capacitor Cd.
Currently, before dual powered locomotive switching power source, it is necessary to first shut down, block the first inverter INV1 and the second inversion
The output of device INV2 restarts another power source after whole shutdown.
When switching to diesel engine powering mode by contact net powering mode, it is necessary to first block the first inverter INV1 and
The output of two inverter INV2 is then turned off main disconnected MCB, falls pantograph；Starting diesel engine is powered to intermediate loop later, when
When intermediate supports capacitor Cd both end voltage reaches target voltage again, the first inverter INV1 and the second inversion could be put into again
Device INV2.
When switching to contact net powering mode by diesel engine powering mode, it is necessary to first block the first inverter INV1 and
The output of two inverter INV2 is then turned off excitation contactor KM4, stops diesel engine；Pantograph is risen later, closes co-host break
MCB, after four-quadrant QC1 starting, intermediate supports capacitor Cd both end voltage Ud reaches near target voltage, could put into the again
One inverter INV1 and the second inverter INV2.
Traditional handoff procedure must temporary stoppage, to power source switching after locomotive could operation again, locomotive must
It must stop that power source switching could be completed, cannot achieve and work continuously.
Summary of the invention
The present invention provides a kind of double dynamical powering mode seamless handover method of locomotive, completes under non-stop-machine state different
Switching between power source realizes that seamless switching, concrete scheme are as follows:
A kind of double dynamical powering mode seamless handover method of locomotive, comprising:
It adjusts initial power supply source and/or switches the output voltage of power supply source, keep the output voltage of the initial power supply source low
In the switching power supply source, and the voltage value of the initial power supply source is higher than the work electricity of the first inverter and the second inverter
Pressure；
The switching power supply source is connected, is led simultaneously with Support Capacitor by the switching power supply source and the initial power supply source
It is logical；
After the voltage value of the Support Capacitor is stablized, the initial power supply source is cut off.
Optionally, after cutting off the initial power supply source, the voltage value of the switching power supply source is adjusted, the Support Capacitor is made
Voltage value stablize in normal working voltage.
Optionally, when the initial power supply source is diesel engine, and the switching power supply source is contact net, the diesel oil is reduced
The output voltage of machine makes it below the normal working voltage, and the output voltage of the contact net is kept to be equal to the normal work
Make voltage；
When the initial power supply source is contact net, and the switching power supply source is diesel engine, the defeated of the contact net is kept
Voltage is equal to the normal working voltage out, promotes the output voltage of the diesel engine, makes it higher than the normal working voltage.
Optionally, when the initial power supply source is diesel engine, and the switching power supply source is contact net:
Excitation duty ratio is adjusted by excitation con-trol unit, reduces the output voltage of the diesel engine to Chai Huan electricity target value
(Ud-N) V (Ud is the normal working voltage, and N is positive number), makes the medium voltage of the Support Capacitor reach the Chai Huan electricity
Target value, and whether the medium voltage for detecting the Support Capacitor is stable in the Chai Huan electricity target value；
If so, rising pantograph, and detect whether the pantograph normally rises；
If so, close co-host break, and detect the master it is disconnected whether normally closed；
If so, starting four-quadrant module, and detect whether the four-quadrant module normally starts；
If so, controlling the medium voltage of the Support Capacitor by the four-quadrant module, make the Support Capacitor
Medium voltage reaches the normal working voltage, and whether the voltage for detecting the Support Capacitor reaches the normal work electricity
Pressure；
If so, disconnecting the excitation contactor of the diesel engine, and detect the whether positive normal off of the excitation contactor
It opens；
If so, stopping the diesel engine, and detect whether the diesel engine normally stops；
If so, terminating.
Optionally, when starting four-quadrant module, it is first closed pre-charge contactor, passes through pre-charge resistance and the four-quadrant
Support Capacitor described in the diode pair of the IBGT parallel connection of module is limited to be pre-charged；When the voltage at the Support Capacitor both ends reaches
When being closed threshold voltage, the short circuit contactor in parallel with the pre-charge contactor and the pre-charge resistance is reclosed.
Optionally, when the initial power supply source is contact net, and the switching power supply source is diesel engine:
The feedback power for limiting four-quadrant module makes it be much smaller than the generated output of the diesel engine；
Start the diesel engine, and detects whether the diesel engine normally starts；
If so, closure excitation contactor, and detect the excitation contactor whether normally closed；
If so, adjusting excitation duty ratio by excitation con-trol unit, output voltage to the electricity for promoting the diesel engine is changed
Bavin target value (Ud+N) V (Ud is the normal working voltage, and N is positive number), makes the medium voltage of the Support Capacitor reach institute
It states electricity and changes bavin target value, and whether the medium voltage for detecting the Support Capacitor is stable changes bavin target value in the electricity；
If so, stopping the four-quadrant module, and detect whether the four-quadrant module shuts down；
If so, it is disconnected to disconnect master, and detect whether the master is disconnected normally disconnects；
If so, falling pantograph, and detect whether the pantograph normally declines；
If so, adjusting excitation duty ratio by excitation con-trol unit, stablize the medium voltage of the Support Capacitor
The normal working voltage.
Optionally, if any deterministic process result be it is no, terminate handover operation.
The present invention provides a kind of double dynamical powering mode seamless handover methods of locomotive, comprising the following steps: adjusts initial
Power supply source and/or the output voltage for switching power supply source make the output voltage of initial power supply source lower than switching power supply source, and initially
The voltage value of power supply source is higher than the operating voltage of the first inverter and the second inverter, and only initial power supply source is to support electricity at this time
Capacity charge is still able to maintain the first inverter and the second inverter in normal operating condition, switches power supply source at this time and not yet connects
It is logical, power is not provided to the first inverter and the second inverter；Switching power supply source is connected, by switching power supply source and initial power supply source
Be connected simultaneously with Support Capacitor, but since the output voltage of switching power supply source is greater than initial power supply source, Support Capacitor by
The higher switching power supply source charging of voltage value, and initial power supply source is no longer powered substantially；After the voltage value of Support Capacitor is stablized,
Initial power supply source is cut off, the switching between different dynamic source is completed.
The present invention realizes the change of power source by adjusting the voltage difference between two kinds of different power supply sources, at any time extremely
A few power source charges to Support Capacitor, keeps the first inverter and the second inverter in operating status, in switching power
Shi Bubi is shut down, and realizes seamless switching.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the main circuit schematic diagram of dual powered locomotive；
Fig. 2 is the flow chart that contact net powering mode switches to diesel engine powering mode；
Fig. 3 is the flow chart that contact net powering mode switches to diesel engine powering mode.
Specific embodiment
Core of the invention is to provide a kind of double dynamical powering mode seamless handover method of locomotive, in non-stop-machine state
The lower switching completed between different dynamic source, realizes seamless switching.
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing and specifically
Embodiment, explanation is described in detail to the double dynamical powering mode seamless handover method of locomotive of the invention.
The present invention provides a kind of double dynamical powering mode seamless handover methods of locomotive, comprising the following steps:
It adjusts initial power supply source and/or switches the output voltage of power supply source, be lower than the output voltage of initial power supply source and cut
Power supply source is changed, and the voltage value of initial power supply source is higher than the operating voltage of the first inverter INV1 and the second inverter INV2；
Initial power supply source can individually be adjusted or switch any one in power supply source, initial power supply source and switching power supply can also be adjusted simultaneously
Source makes the voltage value of the initial power supply source in power supply state originally lower than the voltage value for the switching power supply source for needing to switch；This
When only initial power supply source charge to Support Capacitor Cd, be still able to maintain at the first inverter INV1 and the second inverter INV2
In normal operating condition, switches power supply source at this time and not yet connect, the first inverter INV1 and the second inverter INV2 is not provided
Power.
Switching power supply source is connected, is connected simultaneously with Support Capacitor Cd by switching power supply source and initial power supply source；But due to
The output voltage for switching power supply source is greater than initial power supply source, therefore Support Capacitor Cd is filled by the higher switching power supply source of voltage value
Electricity, and initial power supply source is no longer powered substantially；Initial power supply source remains normally state in closing course.
After the voltage value of Support Capacitor Cd is stablized, initial power supply source is cut off；Complete the switching between different dynamic source
Process.
The present invention realizes the change of power source by adjusting the voltage difference between two kinds of different power supply sources, at any time extremely
A rare power source charges to Support Capacitor Cd, and the first inverter INV1 and the second inverter INV2 is kept to be in operation shape
State need not be shut down when switching between different power sources, realize seamless switching.
On the basis of above scheme, after cutting off initial power supply source, the voltage value of switching power supply source is adjusted, makes support electricity
The voltage value for holding Cd is stablized in normal working voltage.Because the output voltage of switching power supply source may be not equal to normal working voltage,
It needs to stablize the voltage value of Support Capacitor Cd in normal working voltage to guarantee the first inverter when the handover procedure is completed
INV1 and the second inverter INV2 is operated normally.
Handover operation includes two kinds of situations, and one is being contact net power supply by diesel engine power switching, another kind is by connecing
Net-fault power switching is diesel engine power supply.
It is contact when initial power supply source is diesel engine, and switching power supply source is contact net, namely by diesel engine power switching
Net power supply, reduces the output voltage of diesel engine, makes it below normal working voltage, and the output voltage for being kept in contact net is equal to normally
Operating voltage.Core of the invention is to control the output voltage between diesel engine and contact net, makes it there are a difference, because
This is above-mentioned only as a preferred solution, and other voltage corresponding relationships, such as the output voltage of diesel engine etc. can also be used
It is higher than normal working voltage in the output voltage of normal working voltage, contact net.
It is diesel oil when initial power supply source is contact net, and switching power supply source is diesel engine, namely by contact net power switching
Machine power supply, the output voltage for being kept in contact net are equal to normal working voltage, promote the output voltage of diesel engine, make it higher than normal
Operating voltage.Similarly, it is above-mentioned only as a preferred solution, other voltage corresponding relationships can also be used, such as contact
The output voltage of net is lower than normal working voltage, and the output voltage of diesel engine is equal to normal working voltage.
As shown in Figure 1, being the main circuit schematic diagram of dual powered locomotive；Traditional handover operation includes two kinds of situations:
1) contact net takes electricity
After pantograph rises, close co-host break MCB, be delayed certain time, with detect pantograph whether normal engagement；Normally
After engagement, it is first closed pre-charge contactor KM1, passes through the two of the IBGT of pre-charge resistance Rchr and four-quadrant module QC1 parallel connection
Pole pipe is pre-charged to intermediate loop Support Capacitor Cd, because there are pre-charge resistance Rchr, the voltage on Support Capacitor Cd is slow
It is slow to rise；After Cd both end voltage reaches certain value (short circuit contactor closure threshold voltage), short circuit contactor KM2 is reclosed,
Be delayed certain time, with detect short circuit contactor KM2 whether normal engagement；After normal engagement, start four-quadrant module QC1, it will
Intermediate loop Support Capacitor Cd both end voltage controls near target value.
2) diesel engine takes electricity
After diesel engine starting, it is first closed diesel engine output contactor KM3, recloses excitation contactor KM4, diesel engine is opened
The power generation of beginning excitation；The three-phase alternating voltage of diesel engine output is converted to direct current by uncontrollable rectification module CON1, to support
Capacitor Cd charging；Excitation duty ratio is adjusted by excitation con-trol unit, the control of intermediate loop Support Capacitor Cd both end voltage is existed
Near target value.
Seamless handover method of the invention equally includes two kinds of particular situations, is described in detail individually below:
1) when initial power supply source be diesel engine, switching power supply source be contact net when, namely from contact net powering mode switch
To diesel engine powering mode；As shown in Fig. 2, switching to the flow chart of diesel engine powering mode for contact net powering mode.
Excitation duty ratio is adjusted by excitation con-trol unit, reduces the output voltage of diesel engine to Chai Huan electricity target value (Ud-
N) V (Ud is normal working voltage, and N is positive number), makes the medium voltage of Support Capacitor Cd reach Chai Huan electricity target value, and detect branch
Whether the medium voltage for supportting capacitor Cd is stable in Chai Huan electricity target value.Only have diesel engine at this time to charge to Support Capacitor Cd, support
The voltage value of capacitor Cd changes with the output voltage of diesel engine；Chai Huan electricity target value (Ud-N) V according to the first inverter INV1 and
The minimum operating voltage of second inverter INV2 determines, minimum to may be configured as minimum operating voltage, such as normal working voltage Ud
For 1800V, N 100V, then Chai Huan electricity target value is 1800V-100V=1700V.
Whether the medium voltage for detecting Support Capacitor Cd is stable in Chai Huan electricity target value (Ud-N) V, if so, rising by electricity
Bow, and detect whether pantograph normally rises.Pantograph is powered locomotive for contacting conduction with contact net.
If whether pantograph normally rises, close co-host break MCB, and detect main disconnected MCB whether normally closed.
If main disconnected MCB whether normally closed, start four-quadrant module QC1, and whether detect four-quadrant module QC1 normal
Starting.
If four-quadrant module QC1 normally starts, the medium voltage of Support Capacitor Cd is adjusted by four-quadrant module QC1,
The medium voltage of Support Capacitor Cd is set to reach normal working voltage Ud, and whether the voltage for detecting Support Capacitor Cd reaches normal work
Make voltage Ud.Since the reversed cut-off of uncontrollable rectification module CON1 diode acts on, the energy of intermediate loop will not be toward diesel oil
Pusher side reverse transfer, four-quadrant module QC1 has become the energy source of load INV1 and INV2 at this time.
If the voltage of Support Capacitor Cd reaches normal working voltage Ud, the excitation contactor KM4 of diesel engine is disconnected, and is examined
Survey whether excitation contactor KM4 normally disconnects.
If excitation contactor KM4 is normally disconnected, stop diesel engine, and detects whether diesel engine normally stops.
If diesel engine normally stops, terminating, completes the handoff procedure that diesel engine supplies power to contact net power supply.
Specifically, when starting four-quadrant module QC1, it is first closed pre-charge contactor KM1, passes through pre-charge resistance Rchr
It is pre-charged with the diode pair Support Capacitor Cd of the IBGT parallel connection of four-quadrant module QC1；When the voltage at Support Capacitor both ends
When reaching closure threshold voltage, the short circuit contactor in parallel with pre-charge contactor KM1 and pre-charge resistance Rchr is reclosed
KM2.Pre-charge contactor KM1 and pre-charge resistance Rchr are arranged in series, and the two is jointly in parallel with short circuit contactor KM2.Because depositing
Voltage on pre-charge resistance Rchr, Support Capacitor Cd slowly rises, and avoids transient current excessive.
2) when initial power supply source be contact net, switching power supply source be diesel engine when, namely from contact net powering mode switch
It powers to diesel engine, as shown in figure 3, switching to the flow chart of diesel engine powering mode for contact net powering mode.
The feedback power for limiting four-quadrant module QC1 makes feedback power be much smaller than the generated output of diesel engine；Once diesel oil
Machine is powered, then four-quadrant module QC1 is equivalent to an electrical appliance, is fed back and is powered to contact net；Due to limiting four-quadrant
The feedback power of module QC1, four-quadrant module QC1 are only equivalent to a small load of diesel engine, and the excision of small load is to diesel oil
The output of machine not will cause big disturbance.
Start diesel engine, and detects whether diesel engine normally starts.
If diesel engine normally starts, be closed excitation contactor KM4, and detect excitation contactor KM4 whether normally closed.
If excitation contactor KM4 normally closed, excitation duty ratio is adjusted by excitation con-trol unit, promotes diesel engine
Output voltage to electricity changes bavin target value (Ud+N) V (Ud is normal working voltage, and N is positive number), makes the intermediate electricity of Support Capacitor Cd
Pressure reaches electricity and changes bavin target value, and whether the medium voltage for detecting Support Capacitor Cd is stable changes bavin target value (Ud+N) V in electricity.This
When only contact net charge to Support Capacitor Cd, the voltage value of Support Capacitor Cd changes with the output voltage of contact net；Electricity changes bavin
Target value (Ud+N) V determines that highest is settable according to the maximum operating voltage of the first inverter INV1 and the second inverter INV2
It is 1800V, N 100V for maximum operating voltage, such as normal working voltage Ud, then Chai Huan electricity target value is 1800V+100V=
1900V。
If the medium voltage of Support Capacitor Cd, which is stablized, changes bavin target value (Ud+N) V in electricity, stop four-quadrant module QC1,
And detect whether four-quadrant module QC1 shuts down.
If four-quadrant module QC1 orderly closedown, main disconnected MCB is disconnected, and detects whether main disconnected MCB normally disconnects.
If main disconnected MCB is normally disconnected, pantograph is fallen, and detect whether pantograph normally declines.
If pantograph normally declines, excitation duty ratio is adjusted by excitation con-trol unit, makes the intermediate electricity of Support Capacitor
Pressure is stablized in normal working voltage Ud.
As shown in Figures 2 and 3, diesel engine powering mode is switched to by contact net powering mode and contact net powering mode is cut
During shifting to diesel engine powering mode, if any deterministic process result be it is no, terminate handover operation, continue to keep initial
Power supply source power supply.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, this hair
It is bright to be not intended to be limited to the embodiments shown herein, and be to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (7)
1. a kind of double dynamical powering mode seamless handover method of locomotive characterized by comprising
It adjusts initial power supply source and/or switches the output voltage of power supply source, make the output voltage of the initial power supply source lower than institute
Switching power supply source is stated, and the voltage value of the initial power supply source is higher than the operating voltage of the first inverter and the second inverter；
The switching power supply source is connected, is connected simultaneously with Support Capacitor by the switching power supply source and the initial power supply source；
After the voltage value of the Support Capacitor is stablized, the initial power supply source is cut off.
2. the double dynamical powering mode seamless handover method of locomotive according to claim 1, which is characterized in that cutting is described just
After beginning power supply source, the voltage value of the switching power supply source is adjusted, stablizes the voltage value of the Support Capacitor and is working normally electricity
Pressure.
3. the double dynamical powering mode seamless handover method of locomotive according to claim 2, which is characterized in that when described initial
Power supply source is diesel engine, when the switching power supply source is contact net, reduce the output voltage of the diesel engine, make it below it is described
Normal working voltage keeps the output voltage of the contact net to be equal to the normal working voltage；
When the initial power supply source is contact net, and the switching power supply source is diesel engine, the output electricity of the contact net is kept
Pressure is equal to the normal working voltage, promotes the output voltage of the diesel engine, makes it higher than the normal working voltage.
4. the double dynamical powering mode seamless handover method of locomotive according to claim 3, which is characterized in that when described initial
Power supply source is diesel engine, when the switching power supply source is contact net:
Excitation duty ratio is adjusted by excitation con-trol unit, reduces the output voltage of the diesel engine to Chai Huan electricity target value (Ud-
N) V (Ud is the normal working voltage, and N is positive number), makes the medium voltage of the Support Capacitor reach the Chai Huan electricity target
Value, and whether the medium voltage for detecting the Support Capacitor is stable in the Chai Huan electricity target value；
If so, rising pantograph, and detect whether the pantograph normally rises；
If so, close co-host break, and detect the master it is disconnected whether normally closed；
If so, starting four-quadrant module, and detect whether the four-quadrant module normally starts；
If so, controlling the medium voltage of the Support Capacitor by the four-quadrant module, make the centre of the Support Capacitor
Voltage reaches the normal working voltage, and whether the voltage for detecting the Support Capacitor reaches the normal working voltage；
If so, disconnecting the excitation contactor of the diesel engine, and detect whether the excitation contactor normally disconnects；
If so, stopping the diesel engine, and detect whether the diesel engine normally stops；
If so, terminating.
5. the double dynamical powering mode seamless handover method of locomotive according to claim 4, which is characterized in that starting four-quadrant
When module, it is first closed pre-charge contactor, passes through the diode of the IBGT parallel connection of pre-charge resistance and the four-quadrant module
The Support Capacitor is pre-charged；When the voltage at the Support Capacitor both ends reach closure threshold voltage when, reclose with
The pre-charge contactor and the short circuit contactor of pre-charge resistance parallel connection.
6. the double dynamical powering mode seamless handover method of locomotive according to claim 3, which is characterized in that when described initial
Power supply source is contact net, when the switching power supply source is diesel engine:
The feedback power for limiting four-quadrant module makes it be much smaller than the generated output of the diesel engine；
Start the diesel engine, and detects whether the diesel engine normally starts；
If so, closure excitation contactor, and detect the excitation contactor whether normally closed；
If so, adjusting excitation duty ratio by excitation con-trol unit, output voltage to the electricity for promoting the diesel engine changes bavin mesh
Scale value (Ud+N) V (Ud is the normal working voltage, and N is positive number), makes the medium voltage of the Support Capacitor reach the electricity
Bavin target value is changed, and whether the medium voltage for detecting the Support Capacitor is stable changes bavin target value in the electricity；
If so, stopping the four-quadrant module, and detect whether the four-quadrant module shuts down；
If so, it is disconnected to disconnect master, and detect whether the master is disconnected normally disconnects；
If so, falling pantograph, and detect whether the pantograph normally declines；
If so, adjusting excitation duty ratio by excitation con-trol unit, stablize the medium voltage of the Support Capacitor described
Normal working voltage.
7. the double dynamical powering mode seamless handover method of the locomotive according to claim 4 or 6, which is characterized in that if any
Deterministic process result be it is no, then terminate handover operation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711448673.3A CN109980767A (en) | 2017-12-27 | 2017-12-27 | A kind of double dynamical powering mode seamless handover method of locomotive |
| PCT/CN2018/111363 WO2019128416A1 (en) | 2017-12-27 | 2018-10-23 | Method for seamless switching between dual-power power supply modes of locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711448673.3A CN109980767A (en) | 2017-12-27 | 2017-12-27 | A kind of double dynamical powering mode seamless handover method of locomotive |
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| WO (1) | WO2019128416A1 (en) |
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| CN114228753A (en) * | 2021-11-30 | 2022-03-25 | 中车大连机车车辆有限公司 | Locomotive contact net and diesel engine power source conversion method |
| CN116674596A (en) * | 2023-06-29 | 2023-09-01 | 中车株洲电力机车有限公司 | Control method and related components of hybrid power locomotive |
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| WO2019128416A1 (en) | 2019-07-04 |
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