CN109088534A - Traction convertor, mixed motor train traction passing neutral section control system and method - Google Patents
Traction convertor, mixed motor train traction passing neutral section control system and method Download PDFInfo
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- CN109088534A CN109088534A CN201810978784.3A CN201810978784A CN109088534A CN 109088534 A CN109088534 A CN 109088534A CN 201810978784 A CN201810978784 A CN 201810978784A CN 109088534 A CN109088534 A CN 109088534A
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- Prior art keywords
- phase
- voltage
- traction
- battery system
- vehicle group
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/04—Arrangements for cutting in and out of individual track sections
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Abstract
The present invention provides a kind of traction convertor, mixed motor train traction passing neutral section control system and method.The traction convertor includes: processor, phaselocked loop, main circuit breaker, tractive transformer, main contactor, four-quadrant rectifier 4QC and DC/DC battery system；Wherein, processor be used for receive it is pre- cross phase-separating section signal when, disconnect main circuit breaker, keep main contactor closure；When mixed motor-car crosses phase-separating section, control DC/DC battery system provides DC voltage；At the end of mixed motor-car crosses phase-separating section, voltage on line side phase is obtained by phaselocked loop, and net side voltage-phase is transmitted to 4QC, so that 4QC, according to voltage on line side phase and phase transition relationship, the secondary side voltage-phase for controlling tractive transformer is identical as voltage on line side phase；When the primary side voltage-phase for determining tractive transformer is equal with voltage on line side phase, it is closed main circuit breaker, keeps main contactor closure.The present invention is by the cooperation between control 4QC and DC/DC battery system, so that mixed motor-car passed through phase-separating section.
Description
Technical field
The present invention relates to hybrid electric vehicle technical group field more particularly to a kind of traction convertors, mixed motor-car traction current transformation
Device passing neutral section control system and method.
Background technique
The railway system is single phase power supply to the power supply mode of power car group, and can be in railway contact line when the operation of power car group
Upper segmentation commutation is with balanced three-phase voltage.It is damaged dynamic in order to avoid phase fault or since adjacent power-feed section voltage-phase is different
Power vehicle group needs that phase-separating section is arranged between each independently-powered section.
When power car group crosses phase-separating section, usually main circuit breaker and main contactor are disconnected, cutting net side power supply is only leaned on
Phase-separating section is crossed in coast.While in order to guarantee that power car group has enough power in mistake phase-separating section and maintenance DC voltage is to dynamic
The power supply (being illuminated on such as vehicle) of power vehicle group, therefore power car group needs to carry out faint braking, needs anti-by traction invertor
Energy regenerative amount maintains DC voltage.However, this mode not only increases the operation difficulty of driver, and to the peace of power car group
Row for the national games causes a hidden trouble.
Therefore, by adding power battery pack (such as DC/DC battery system) so that the hybrid electric vehicle group that becomes solve
The above problem.However, when hybrid electric vehicle group crosses phase-separating section, control four-quadrant rectifier (4QC) and DC/DC battery system it
Between engagement process it is most important.
Summary of the invention
The present invention provides a kind of traction convertor, mixed motor train traction passing neutral section control system and method, to realize
It is good fit between 4QC and DC/DC battery system in traction convertor, so that hybrid electric vehicle group crosses phase-separating section mistake entire
It can be operated normally in journey.
In a first aspect, the present invention provides a kind of traction convertor, comprising: phaselocked loop, main circuit breaker, tractive transformer, master
Contactor, four-quadrant rectifier 4QC and DC/DC battery system；
Wherein, the phaselocked loop is used to detect the voltage on line side phase of contact net, and the main circuit breaker is for controlling by electricity
The closing or opening of bow and the contact net, the power supply so that contact net is powered or stopped to the tractive transformer are described
Tractive transformer is electrically connected with the main contactor, and the main contactor is electrically connected with the 4QC, the DC/DC battery system
It is electrically connected with the 4QC；
The traction convertor further include: processor, wherein the processor is disconnected with the phaselocked loop, the master respectively
Road device, the tractive transformer, the main contactor, the 4QC and DC/DC battery system electrical connection；
The processor connects for before hybrid electric vehicle group crosses phase-separating section, being closed the main circuit breaker and the master
Tentaculum；When receiving pre- phase-separating section signal excessively, the main circuit breaker is disconnected, the main contactor is kept to be closed；Described mixed
When conjunction power car group crosses phase-separating section, controls the DC/DC battery system and DC voltage is provided；It is excessive in the hybrid electric vehicle group
At the end of phase region, the voltage on line side phase is obtained by the phaselocked loop, and transmit the voltage on line side phase to the 4QC
Position, so that the 4QC controls the secondary side of the tractive transformer according to the voltage on line side phase and phase transition relationship
Voltage-phase is identical as voltage on line side phase, wherein the phase transition relationship is the primary side voltage of the tractive transformer
The transformational relation of the secondary side voltage-phase of phase and the tractive transformer；In the primary side electricity for determining the tractive transformer
When pressing phase equal with the voltage on line side phase, it is closed the main circuit breaker, the main contactor is kept to be closed.
Optionally, the traction convertor further include: traction invertor；
Wherein, the traction invertor is electrically connected between the 4QC and the DC/DC battery system, so that the 4QC
Or the DC/DC battery system provides DC voltage to the traction invertor, the traction invertor is also used to be electrically connected and lead
Draw motor.
Optionally, the traction convertor further include: AuCT；
Wherein, the AuCT is electrically connected between the 4QC and the DC/DC battery system, so that the 4QC
Or the DC/DC battery system provides DC voltage to the AuCT, the AuCT is used for the mixing
The power supply of power car group.
Optionally, the traction convertor further include: overvoltage suppression circuit；
Wherein, the overvoltage suppression circuit is electrically connected between the 4QC and the DC/DC battery system, for preventing
The DC voltage that the 4QC or the DC/DC battery system are provided to the subordinate inverter is excessive.
Optionally, the operating mode of the hybrid electric vehicle group includes: in traction working condition, damped condition and inertia operating condition
It is any.
Optionally,
The processor, for when the operating mode of the 4QC be traction working condition when, it is excessive in the hybrid electric vehicle group
Before phase region, it is closed the main circuit breaker and the main contactor, so that the contact net powers to the 4QC and to described
The charging of DC/DC battery system；When the hybrid electric vehicle group crosses phase-separating section, controls the DC/DC battery system and led to described
Inverter offer DC voltage is provided and maintains the hybrid electric vehicle so that the traction invertor is powered to the traction electric machine
The tractive force of group controls the DC/DC battery system and also provides DC voltage to the AuCT, so that the auxiliary becomes
Stream device is powered to the hybrid electric vehicle group；
The processor is also used to when the operating mode of the 4QC is damped condition, in the hybrid electric vehicle group mistake
Before phase-separating section, it is closed the main circuit breaker and the main contactor, so that the 4QC transmits feedback system to the contact net
Energy；When the hybrid electric vehicle group crosses phase-separating section, the institute that the DC/DC battery system receives the 4QC transmission is controlled
Regenerative braking energy is stated, and controls the DC/DC battery system and provides DC voltage to the traction invertor, so that described
Traction invertor is powered to the traction electric machine, maintains the brake force of the hybrid electric vehicle group, controls DC/DC battery system
System also provides DC voltage to the AuCT, so that the AuCT is powered to the hybrid electric vehicle group；
The processor is also used to when the operating mode of the 4QC is inertia operating condition, in the hybrid electric vehicle group mistake
Before phase-separating section, it is closed the main circuit breaker and the main contactor, so that the contact net powers to the 4QC and to described
The charging of DC/DC battery system；When the hybrid electric vehicle group crosses phase-separating section, the DC/DC battery system is controlled to described auxiliary
Current transformer is helped to provide DC voltage, so that the AuCT is powered to the hybrid electric vehicle group.
Optionally, the traction convertor further include: power packet；
Wherein, the power packet is electrically connected with the 4QC, for powering to the 4QC.
Optionally, the traction convertor further include: the first pre-charging device；
Wherein, the power packet is electrically connected with first pre-charging device, and first pre-charging device is electrically connected to
Between the tractive transformer and the 4QC.
Optionally, the DC/DC battery system includes: energy storage device, DC/DC chopper and the second pre-charging device；
Wherein, the energy storage device is electrically connected with the DC/DC chopper, and the DC/DC chopper is pre- with described second
Charging unit electrical connection, second pre-charging device are electrically connected between the traction invertor and the 4QC.
Optionally, the traction convertor further include: third pre-charging device；
Wherein, the third pre-charging device is electrically connected between the 4QC and the DC/DC battery system.
Second aspect, the present invention provide a kind of mixed motor train traction passing neutral section control system, comprising: contact net is led
Draw motor and traction convertor as described above；
Wherein, the contact net is electrically connected with the traction convertor, the traction convertor and traction electric machine electricity
Connection.
The third aspect, the present invention provide a kind of mixed motor train traction method for controlling passing neutral section, are applied to traction current transformation
Device, the traction convertor include: processor, phaselocked loop, main circuit breaker, tractive transformer, main contactor, four-quadrant rectifier
4QC and DC/DC battery system, wherein the processor becomes with the phaselocked loop, the main circuit breaker, the traction respectively
Depressor, the main contactor, the 4QC and DC/DC battery system electrical connection, the phaselocked loop is for detecting contact net
Voltage on line side phase, the main circuit breaker is used to control the closing or opening of pantograph Yu the contact net, so that described connect
It touches net and powers to the tractive transformer or stop power supply, the tractive transformer is electrically connected with the main contactor, the master
Contactor is electrically connected with the 4QC, and the DC/DC battery system is electrically connected with the 4QC, and the DC/DC battery system is also used
It powers in hybrid electric vehicle group；
The described method includes:
The processor is closed the main circuit breaker and the main contact before the hybrid electric vehicle group crosses phase-separating section
Device；
The processor disconnects the main circuit breaker, keeps the main contactor when receiving pre- phase-separating section signal excessively
Closure；
The processor controls the DC/DC battery system and provides direct current when the hybrid electric vehicle group crosses phase-separating section
Voltage；
The processor obtains the net side at the end of hybrid electric vehicle group crosses phase-separating section, through the phaselocked loop
Voltage-phase, and the voltage on line side phase is transmitted to the 4QC, so that the 4QC is according to the voltage on line side phase and phase
Position transformational relation, the secondary side voltage-phase for controlling the tractive transformer are identical as voltage on line side phase, wherein the phase
Transformational relation is turn of the primary side voltage-phase of the tractive transformer and the secondary side voltage-phase of the tractive transformer
Change relationship；
The processor is equal with the voltage on line side phase in the primary side voltage-phase for determining the tractive transformer
When, it is closed the main circuit breaker, the main contactor is kept to be closed.
Traction convertor, mixed motor train traction passing neutral section control system and method provided by the invention, by pre-
When crossing phase-separating section, processor control disconnects main circuit breaker, still main contactor is kept to be closed, so that 4QC is in inverter mode, and locates
It manages device control DC/DC battery system and DC voltage is provided, guarantee that hybrid electric vehicle group has enough power to pass through phase-separating section.Mixed
It closing at the end of power car group crosses phase-separating section, processor gets the voltage on line side phase of contact net by phaselocked loop in real time, and to
4QC transmits the voltage on line side phase of contact net, and 4QC can come according to the voltage on line side phase and phase transition relationship of contact net
The primary side voltage-phase for adjusting tractive transformer, so that the net side of the primary side voltage-phase of tractive transformer and contact net is electric
It presses phase to keep identical, hybrid electric vehicle group is avoided to be damaged when entering power-feed section.The present invention is in hybrid electric vehicle group
The good fit of 4QC and DC/DC battery system is realized during by entirely crossing phase-separating section, so that hybrid electric vehicle group
It can be safely operated, while extend the service life of main contactor, reduce the operation difficulty of driver.
Detailed description of the invention
It, below will be to embodiment or existing in order to clearly demonstrate the embodiment of the present invention or technical solution in the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments of embodiment, for those of ordinary skill in the art, without any creative labor, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the structural schematic diagram of traction convertor provided by the invention；
Fig. 2, which is that traction convertor provided by the invention is entire in the case where hybrid electric vehicle group is in traction working condition, crosses phase-separating section mistake
Timing schematic diagram in journey；
Fig. 3, which is that traction convertor provided by the invention is entire in the case where hybrid electric vehicle group is in damped condition, crosses phase-separating section mistake
Timing schematic diagram in journey；
Fig. 4, which is that traction convertor provided by the invention is entire in the case where hybrid electric vehicle group is in coasting operating condition, crosses phase-separating section mistake
Timing schematic diagram in journey；
Fig. 5 is the structural schematic diagram of mixed motor train traction passing neutral section control system provided by the invention；
Fig. 6 is the flow chart of mixed motor train traction method for controlling passing neutral section provided by the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment in the embodiment of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work, belongs to implementation of the present invention
The range of example protection.
Fig. 1 is the structural schematic diagram of traction convertor provided by the invention, as shown in Figure 1, the traction current transformation of the present embodiment
Device 10 include: phaselocked loop 11, main circuit breaker 12, tractive transformer 13, main contactor 14, four-quadrant rectifier 4QC 15 and
DC/DC battery system 16；
Wherein, phaselocked loop 11 is used to detect the voltage on line side phase of contact net, main circuit breaker 12 for control pantograph with
The closing or opening of contact net, the power supply so that contact net is powered or stopped to tractive transformer 13, tractive transformer 13 connect with master
Tentaculum 14 is electrically connected, and main contactor 14 is electrically connected with 4QC 15, and DC/DC battery system 16 is electrically connected with 4QC 15；
Traction convertor 10 further include: processor 17, wherein processor 17 respectively with phaselocked loop 11, main circuit breaker 12, lead
Draw transformer 13, main contactor 14,4QC 15 and DC/DC battery system 16 to be electrically connected；
Processor 17, for being closed main circuit breaker 12 and main contactor 14 before hybrid electric vehicle group crosses phase-separating section；?
When receiving pre- phase-separating section signal excessively, main circuit breaker 12 is disconnected, main contactor 14 is kept to be closed；It is excessive in hybrid electric vehicle group
When phase region, control DC/DC battery system 16 provides DC voltage；At the end of hybrid electric vehicle group crosses phase-separating section, pass through locking phase
Ring 11 obtains voltage on line side phase, and transmits net side voltage-phase to 4QC 15 so that 4QC 15 according to voltage on line side phase and
Phase transition relationship, the secondary side voltage-phase for controlling tractive transformer 13 are identical as voltage on line side phase, wherein phase transition
Relationship is the transformational relation of the primary side voltage-phase of tractive transformer 13 and the secondary side voltage-phase of tractive transformer 13；?
When determining that the primary side voltage-phase of tractive transformer 13 is equal with voltage on line side phase, it is closed main circuit breaker 12, master is kept to connect
Tentaculum 14 is closed.
Specifically, can be with the voltage on line side phase of real-time detection contact net by 11 (not shown in figure 1) of phaselocked loop, and locate
Reason 17 (not shown in figure 1) of device can receive the voltage on line side phase of the contact net of the locking of phaselocked loop 11, in this way, processor 17 can
To obtain the voltage on line side phase of each power-feed section in real time.Wherein, specific structure of the present embodiment to phaselocked loop 11 and processor 17
Without limitation.
Specifically, processor 17 by control 12 (not shown in figure 1) of main circuit breaker closing or opening, can control by
The closing or opening of pantograph and contact net, in this way, can realize contact net to the power supply of tractive transformer 13 or stop power supply
Process.Due to pre-set tractive transformer 13, primary side voltage-phase and the secondary side electricity of tractive transformer 13
Press phase between transformational relation be it is set, i.e., phase transition relationship is known.Wherein, the present embodiment is to main circuit breaker 12
All without limitation with the specific structure of tractive transformer 13.
Specifically, be electrically connected by tractive transformer 13 with 14 (not shown in figure 1) of main contactor, main contactor 14 with
4QC 15 is electrically connected, and processor 17 is allowed to connect or disconnect 4QC by the closing or opening of control main contactor 14
15 with traction power transformation device connection, in this way, the secondary side voltage phase of the primary side voltage-phase of 4QC 15 and tractive transformer 13
Position is identical.Wherein, the present embodiment to the specific structure of main contactor 14 and 4QC 15 all without limitation.
Further, processor 17 can be by the voltage on line side transmission of phase of contact net to 4QC 15, so that 4QC 15 can
To adjust the secondary side voltage-phase of tractive transformer 13.In this way, 4QC 15 can turn according to voltage on line side phase and phase
Relationship is changed to adjust the primary side voltage-phase of 4QC 15, so that the secondary side voltage-phase and voltage on line side of tractive transformer 13
Phase is identical.Wherein, to the specific knot of main circuit breaker 12, main contactor 14,4QC 15 and tractive transformer 13 in the present embodiment
Structure is all without limitation.
Specifically, the charge and discharge process of itself may be implemented by being electrically connected with 4QC 15 in DC/DC battery system 16.
Wherein, the present embodiment to the specific structure of DC/DC battery system 16 without limitation.And processor 17 by adjustment 4QC 15 with
DC/DC battery system 16 sends command adapted thereto, the cooperation between adjustable 4QC 15 and DC/DC battery system 16, so that mixed
Closing EMU, to reduce the operation difficulty of driver, can increase the safe operation of mixing EMU normal through phase-separating section is crossed.
Specifically, before hybrid electric vehicle group crosses phase-separating section, processor 17 can control main circuit breaker 12 and main contact
Device 14 is closed, and contact net is allowed to power by pantograph to 4QC 15 and charge to DC/DC battery system 16, so that mixed
Closing power car group can not only operate normally, and can also maintain normal work vehicle-mounted in hybrid electric vehicle group.
When processor 17 receives pre- phase-separating section signal excessively, processor 17 can control the disconnection of main circuit breaker 12, keep
Main contactor 14 is closed, and 4QC 15 is in inverter mode during crossing phase-separating section.Wherein, pre- phase-separating section signal of crossing can show that
Hybrid electric vehicle group will enter phase-separating section from power-feed section.Compared to existing technologies, main contactor 14 will not be due to mixed
It closes power car group to want phase-separating section and disconnected, extends the service life of main contactor 14, save the cost.And due to contacting at this time
Net is to disconnect to the supplying channels of 4QC 15, and therefore, when hybrid electric vehicle group crosses phase-separating section, processor 17 can be controlled
DC/DC battery system 16 provides DC voltage, to guarantee that hybrid electric vehicle group can operate normally.Wherein, which can
To be served only for providing the power for maintaining hybrid electric vehicle group, can also be served only for providing power supply vehicle-mounted in hybrid electric vehicle group,
It can also be used for the power supply of these two aspects, the concrete mode that DC/DC battery system 16 provides DC voltage in the present embodiment can be with
It is selected according to the real work mode and power demands of hybrid electric vehicle group, the present embodiment does not limit this.
At the end of hybrid electric vehicle group crosses phase-separating section, processor 17 can get contact net by phaselocked loop 11 in real time
Voltage on line side phase, and the voltage on line side phase is transmitted to 4QC 15, in this way, 4QC 15 can be according to the voltage on line side phase
With phase transition relationship so that the secondary side voltage-phase of tractive transformer 13 and voltage on line side phase are same-phase, in turn,
When hybrid electric vehicle group will go into power-feed section, the voltage on line side phase and tractive transformer 13 on power-feed section can be kept
Primary side voltage-phase is identical, so that hybrid electric vehicle group be avoided to damage.
When the primary side voltage-phase of the determining tractive transformer 13 of processor 17 is equal with voltage on line side phase, processor
17 can control the closure of main circuit breaker 12, and main contactor 14 is kept to be closed.Since under normal circumstances, the magnetic flux in iron core is just
Satisfy conjunction, has such as closed a floodgate in adverse conditions, for magnetic flux density maximum value up to twice of normal value, core sataration will very in iron core
Seriously, reduce its magnetic conduction number, excitation reactance greatly reduces, thus exciting current numerical value increases, this dash current can be more than
6-8 times of transformer rated current.Therefore, before being closed main circuit breaker 12, processor 17 is by judging 12 two sides of main circuit breaker
Voltage-phase is closed main circuit breaker 12,4QC when the primary side voltage-phase of tractive transformer 13 is equal to voltage on line side phase
15 restore electricity in rectification mode again, avoid harm caused by exiting pour current in this way.
When hybrid electric vehicle group enters power-feed section, can restore from contact net by pantograph to 4QC 15 power supply and
The process to charge to DC/DC battery system 16 can also maintain vehicle in hybrid electric vehicle group so that hybrid electric vehicle group operates normally
The normal work of load.
Traction convertor provided in this embodiment, by the way that in pre- phase-separating section excessively, processor control disconnects main circuit breaker, still
Main contactor closure is kept, so that 4QC is in inverter mode, and processor control DC/DC battery system provides DC voltage,
Guarantee that hybrid electric vehicle group has enough power to pass through phase-separating section.At the end of hybrid electric vehicle group crosses phase-separating section, processor is logical
The voltage on line side phase that phaselocked loop gets contact net in real time is crossed, and to the voltage on line side phase of 4QC transmission contact net, 4QC is just
It can be made according to the voltage on line side phase and phase transition relationship of contact net to adjust the primary side voltage-phase of tractive transformer
The primary side voltage-phase for obtaining tractive transformer is identical as the voltage on line side phase holding of contact net, and hybrid electric vehicle group is avoided to exist
It is damaged when entering power-feed section.The present embodiment realizes during hybrid electric vehicle group is by entirely crossing phase-separating section
4QC and DC/DC battery system it is good fit, hybrid electric vehicle group is safely operated, while extending main contactor
Service life, reduce the operation difficulty of driver.
In the following, on the basis of the above embodiments, the specific structure of traction convertor 10 in Fig. 1 is described in detail.
Firstly, continuing with Fig. 1, optionally, traction convertor 10 further include: traction invertor 18；
Wherein, traction invertor 18 is electrically connected between 4QC 15 and DC/DC battery system 16, so that 4QC 15 or DC/
DC battery system 16 provides DC voltage to traction invertor 18, and traction invertor 18 is also used to be electrically connected traction electric machine.
Specifically, traction invertor 18 can pass through contact net respectively by being electrically connected with 4QC 15 and traction electric machine
The direct current for crossing the output of 4QC 15 is converted to three-phase alternating current, i.e., according to the real-time operating condition of hybrid electric vehicle group to 4QC 15
Different voltage instructions is provided, changes the DC voltage that 4QC 15 is exported in real time, and realize to traction by voltage regulation and frequency modulation control
Motor starting, braking, speed regulating control.Wherein, the present embodiment to the specific structure of traction invertor 18 without limitation.
Secondly, continuing with Fig. 1, optionally, traction convertor 10 further include: AuCT 19；
Wherein, AuCT 19 is electrically connected between 4QC 15 and DC/DC battery system 16, so that 4QC 15 or DC/
DC battery system 16 provides DC voltage to AuCT 19, and AuCT 19 is used to power to hybrid electric vehicle group.
Specifically, subordinate inverter can receive 4QC 15 by being connected between 4QC 15 and DC/DC battery system 16
Or the provided DC voltage of DC/DC battery system 16, and then power to Hu Minghai power car group.Wherein, the present embodiment is to auxiliary
Help the specific structure of inverter without limitation.
Further, 4QC 15 or the provided DC voltage of DC/DC battery system 16 are excessive in order to prevent, optionally,
Traction convertor 10 further include: overvoltage suppression circuit 20；Wherein, overvoltage suppression circuit 20 is electrically connected to 4QC 15 and DC/DC electricity
Between cell system 16, the DC voltage for preventing 4QC 15 or DC/DC battery system 16 from providing to subordinate inverter is excessive.
Specifically, overvoltage suppression circuit 20 is by being electrically connected between 4QC 15 and DC/DC battery system 16, so that mistake
Pressure suppression circuit 20 can consume the DC voltage that 4QC 15 or DC/DC battery system 16 provide, and then 4QC 15 or DC/DC electricity
Cell system 16 becomes smaller to the DC voltage that subordinate inverter provides, to prevent subordinate inverter from providing to hybrid electric vehicle group
Big DC voltage.Wherein, the present embodiment to the specific structure of overvoltage suppression circuit 20 without limitation.
Again, the operating mode of hybrid electric vehicle group includes: traction working condition, damped condition and inertia work in the present embodiment
Any one of condition.Specifically, no matter which kind of operating mode is hybrid electric vehicle group be in, and the processor 17 in the present embodiment all may be used
To realize the good fit of 4QC 15 and DC/DC battery system 16.
Fig. 2, which is that traction convertor provided by the invention is entire in the case where hybrid electric vehicle group is in traction working condition, crosses phase-separating section mistake
Timing schematic diagram in journey.Fig. 3 is that traction convertor provided by the invention is entire in the case where hybrid electric vehicle group is in damped condition
Cross the timing schematic diagram during phase-separating section.Fig. 4 is in coasting in hybrid electric vehicle group for traction convertor provided by the invention
The entire timing schematic diagram crossed during phase-separating section under operating condition.
In the following, in conjunction with Fig. 2-4, it is entire in the case where hybrid electric vehicle group is in different operating conditions to the traction convertor 10 in Fig. 1
The timing principle crossed during phase-separating section is described in detail.
Optionally, processor 17, for when the operating mode of 4QC 15 be traction working condition when, it is excessive in hybrid electric vehicle group
Before phase region, it is closed main circuit breaker 12 and main contactor 14, so that contact net powers to 4QC 15 and to DC/DC battery system 16
Charging；When hybrid electric vehicle group crosses phase-separating section, control DC/DC battery system 16 provides DC voltage to traction invertor 18,
So that traction invertor 18 is powered to traction electric machine, the tractive force of hybrid electric vehicle group is maintained, control DC/DC battery system 16 is also
DC voltage is provided to AuCT 19, so that AuCT 19 is powered to hybrid electric vehicle group；
Processor 17 is also used to cross phase-separating section in hybrid electric vehicle group when the operating mode of 4QC 15 is damped condition
Before, it is closed main circuit breaker 12 and main contactor 14, so that 4QC 15 transmits regenerative braking energy to contact net；In hybrid power
When vehicle group crosses phase-separating section, control DC/DC battery system 16 receives the regenerative braking energy that 4QC 15 is transmitted, and controls DC/DC electricity
Cell system 16 provides DC voltage to traction invertor 18, so that traction invertor 18 is powered to traction electric machine, maintains mixing dynamic
The brake force of power vehicle group, control DC/DC battery system 16 also provides DC voltage to AuCT 19, so that AuCT
19 power to hybrid electric vehicle group；
Processor 17 is also used to cross phase-separating section in hybrid electric vehicle group when the operating mode of 4QC 15 is inertia operating condition
Before, it is closed main circuit breaker 12 and main contactor 14, so that contact net is powered to 4QC 15 and filled to DC/DC battery system 16
Electricity；When hybrid electric vehicle group crosses phase-separating section, control DC/DC battery system 16 provides DC voltage to AuCT 19, with
AuCT 19 is set to power to hybrid electric vehicle group.
Specifically, as shown in Fig. 2, when hybrid electric vehicle group is in traction working condition-mistake phase-separating section operating condition-traction working condition,
It crosses before phase-separating section progress, lower alternating voltage is drawn by pantograph from contact net and is powered by tractive transformer 13, mixing is dynamic
Power vehicle group operates in traction working condition, and the DC voltage stability that 4QC 15 is exported at this time is in certain numerical value U1。
When receiving pre- phase-separating section signal, processor 17 controls main contactor 14 and is still closed, and only issues instruction and allows main open circuit
Device 12 disconnects.Into after phase-separating section, DC/DC battery system 16 discharges, to ensure traction invertor 18 always to traction electric machine
Power supply maintains tractive force.Therefore, the DC voltage U that 4QC 15 is exported1It is supplied by DC/DC battery system 16 and is promoted to U2Starting
Output, be delayed a period of time t14QC 15 is changed into inverter mode from rectification state afterwards, and hybrid electric vehicle group crosses split-phase entire
It is all powered by DC/DC battery system 16 by AuCT 19 during area.
After crossing phase-separating section and terminating, with 11 real-time detection voltage on line side phase of phaselocked loop, and fed back to by processor 17
4QC 15, so that the 4QC 15 under inverter mode keeps the voltage-phase and voltage on line side phase of the primary side of tractive transformer 13
Identical, then when the primary side voltage-phase of tractive transformer 13 is equal to voltage on line side phase, processor 17 recloses main disconnected
Road device 12, the state being restored to before phase-separating section.And 4QC 15 transforms back into rectification state from inverter mode immediately, 4QC 15 is defeated
DC output voltage U out1U will be reduced to by DC/DC battery system 163, and in time t2After terminate to power, 4QC 15 export
DC voltage be held in U1Size, and continue be powered by contact net.
Specifically, as shown in figure 3, when hybrid electric vehicle group is in damped condition-mistake phase-separating section operating condition-damped condition,
It crosses before phase-separating section progress, lower alternating voltage is drawn by pantograph from contact net and is powered by tractive transformer 13, mixing is dynamic
Power vehicle group operates in damped condition, and the energy of Brake feedback feeds back to contact net by 4QC 15, and 4QC 15 is exported straight at this time
Voltage stabilization is flowed in U4。
When receiving pre- phase-separating section signal, processor 17 controls main contactor 14 and is still closed, and only issues instruction and allows main open circuit
Device 12 disconnects.Into after phase-separating section, 4QC 15 works under inverter mode, and 4QC 15 export DC voltage U4 by
DC/DC battery system 16 is reduced to U5To open and work in the two-way operation state (size of braking energy of charge or discharge
Determine the concrete condition of 16 charge or discharge of DC/DC battery system, i.e. DC/DC battery system 16 receives the anti-of the transmission of 4QC 15
Braking energy to be presented, is charged, DC/DC battery system 16 provides DC voltage to traction invertor 18 and AuCT 19,
Realize electric discharge).4QC 15 is in t simultaneously1It is changed into inverter mode from rectification state afterwards, hybrid electric vehicle group crosses phase-separating section entire
During all with DC/DC battery system 16 and traction the DC voltage stability that exports 4QC 15 in U5。
After crossing phase-separating section, with 11 real-time detection voltage on line side phase of phaselocked loop, and 4QC is fed back to by processor 17
15, so that the 4QC 15 under inverter mode keeps the voltage-phase and voltage on line side phase phase of the primary side of tractive transformer 13
Together, then when the primary side voltage-phase of tractive transformer 13 is equal to voltage on line side phase, processor 17 recloses main open circuit
Device 12, the state being restored to before phase-separating section.And DC/DC battery system 16 stops continuing to discharge immediately, and in t2After terminate
Power supply, and 4QC 15 receive processor 17 transmission cross phase-separating section end signal when transformed back into immediately from inverter mode it is whole
Stream mode is maintained U6DC voltage, and in time t3It receives the DC voltage instruction value of traction again afterwards, maintains U4It is straight
Galvanic electricity pressure, and continue to be powered by contact net.
Specifically, as shown in figure 4, when hybrid electric vehicle group is in coasting operating condition-mistake phase-separating section operating condition-coasting operating condition,
It crosses before phase-separating section progress, lower alternating voltage is drawn by pantograph from contact net and is powered by tractive transformer 13, mixing is dynamic
Power vehicle group operates in coasting operating condition, supplies electricity to subordinate inverter, i.e. DC voltage U by 4QC 151。
When receiving pre- phase-separating section signal, processor 17 controls main contactor 14 and is still closed, and only issues instruction and allows main open circuit
Device 12 disconnects.Into after phase-separating section, DC/DC battery system 16 discharges, to ensure that subordinate inverter works.And DC voltage U1
U is promoted to by DC/DC battery system 162Start to export, while the delay of 4QC 15 t1It is changed into inverter mode from rectification state afterwards,
Hybrid electric vehicle group is all powered by DC/DC battery system 16 by AuCT 19 in entire phase-separating section process excessively.
After crossing phase-separating section and terminating, with 11 real-time detection voltage on line side phase of phaselocked loop, and fed back to by processor 17
4QC 15, so that the 4QC 15 under inverter mode keeps the voltage-phase and voltage on line side phase of the primary side of tractive transformer 13
Identical, then when the primary side voltage-phase of tractive transformer 13 is equal to voltage on line side phase, processor 17 recloses main disconnected
Road device 12, the state being restored to before phase-separating section.And the output voltage of 4QC 15 is reduced to U by DC/DC battery system 163,
And in t2After terminate to run, 4QC 15 transformed back into rectification shape from inverter mode immediately when receiving phase-separating section end signal
State, the DC voltage that 4QC 15 is exported are held in U1Size, and continue be powered by contact net.
Further, no matter hybrid electric vehicle group crosses phase-separating section, the traction inversion of the present embodiment under different working modes
Device 18 all can satisfy and cross phase-separating section demand under different operating conditions, guarantees that hybrid electric vehicle group can steadily be run, also ensures that
The security reliability of passenger's electrical stability and auxiliary power supply entered phase-separating section and traveling in hybrid electric vehicle group traveling
Out when phase-separating section, transition is steady, improves the ride experience of passenger, and crosses phase-separating section and do not need switching main contactor 14 in the process
State, extend main contactor 14 use the time, reduce train maintenance cost.Wherein, phase-separating section is crossed in traction working condition
When, it is ensured that continued power crosses phase-separating section, does not lose tractive force, does not reduce EMU speed, improves average speeds,
Reduce running time.When damped condition crosses phase-separating section, extra braking energy can fill DC/DC battery system 16
Electricity has achieved the purpose that energy recycling.
Then, continuing with Fig. 1, optionally, traction convertor 10 further include: power packet 21；
Wherein, power packet 21 is electrically connected with 4QC 15, for powering to 4QC 15.
Specifically, power packet 21 is AC power source, by being electrically connected with 4QC 15, can be powered to 4QC 15.Wherein,
The present embodiment to the specific structure of power packet 21 without limitation.
Further, in order to guarantee that the alternating current that power packet 21 is provided to 4QC 15 is reliable and stable, optionally, traction becomes
Flow device 10 further include: the first pre-charging device 22；
Wherein, power packet 21 is electrically connected with the first pre-charging device 22, and the first pre-charging device 22 is electrically connected to traction and becomes
Between depressor 13 and 4QC 15.
Specifically, for power packet 21 by being electrically connected with the first pre-charging device 22, the first pre-charging device 22 passes through electricity
Between connection and tractive transformer 13 and 4QC 15, power packet 21 may be implemented to 4QC 15, reliable AC power source is provided.Its
In, the present embodiment to the specific structure of the first pre-charging device 22 without limitation.
Finally, optionally, DC/DC battery system 16 includes: energy storage device 161, DC/DC chopper continuing with Fig. 1
162 and second pre-charging device 163；
Wherein, energy storage device 161 is electrically connected with DC/DC chopper 162, DC/DC chopper 162 and the second preliminary filling Denso
163 electrical connections are set, the second pre-charging device 163 is electrically connected between traction invertor 18 and 4QC 15.
Specifically, energy storage device 161 with DC/DC chopper 162 by being electrically connected, DC/DC chopper 162 and the second preliminary filling
Electric installation 163 is electrically connected, and the second pre-charging device 163 is electrically connected between traction invertor 18 and 4QC 15, DC/DC battery system
System 16 can provide the DC voltage of actual demand.Wherein.The present embodiment is to energy storage device 161, DC/DC chopper 162 and
The specific structure of two pre-charging devices 163 is all without limitation.
Optionally, continuing with Fig. 1, traction convertor 10 further include: third pre-charging device 23；
Wherein, third pre-charging device 23 is electrically connected between 4QC 15 and DC/DC battery system 16.Specifically, third
Pre-charging device 23 can be by secondary side voltage transmission that tractive transformer 13 exports to 4QC 15, to provide needed for 4QC 15
Alternating voltage.Wherein, the present embodiment to the specific structure of third pre-charging device 23 without limitation.
Fig. 5 is the structural schematic diagram of mixed motor train traction passing neutral section control system provided by the invention, such as Fig. 5 institute
Show, the mixed motor train traction passing neutral section control system 50 of the present embodiment, comprising: contact net 51, traction electric machine 52 and such as
Above-mentioned traction convertor 53；
Wherein, contact net 51 is electrically connected with traction convertor 53, and traction convertor 53 is electrically connected with traction electric machine 52.
Mixed motor train traction passing neutral section control system provided in an embodiment of the present invention includes such as above-mentioned traction current transformation
Above-described embodiment can be performed in device, implements principle and technical effect, reference can be made to above method embodiment, the present embodiment this
Place repeats no more.
Fig. 6 is the flow chart of mixed motor train traction method for controlling passing neutral section provided by the invention, as shown in fig. 6, this
The method of embodiment is applied to traction convertor, and traction convertor includes: processor, phaselocked loop, main circuit breaker, traction voltage transformation
Device, main contactor, four-quadrant rectifier 4QC and DC/DC battery system, wherein processor respectively with phaselocked loop, main open circuit
Device, tractive transformer, main contactor, the electrical connection of 4QC and DC/DC battery system, phaselocked loop are used to detect the net side of contact net
Voltage-phase, main circuit breaker are used to control the closing or opening of pantograph and contact net, so that contact net is supplied to tractive transformer
Electricity stops power supply, and tractive transformer is electrically connected with main contactor, and main contactor is electrically connected with 4QC, DC/DC battery system and
4QC electrical connection, DC/DC battery system are also used to power to hybrid electric vehicle group.
Method provided in this embodiment includes:
S101, processor are closed main circuit breaker and main contactor before hybrid electric vehicle group crosses phase-separating section.
S102, processor disconnect main circuit breaker when receiving pre- phase-separating section signal excessively, keep main contactor closure.
When hybrid electric vehicle group crosses phase-separating section, control DC/DC battery system provides DC voltage for S103, processor.
S104, processor obtain voltage on line side phase at the end of hybrid electric vehicle group crosses phase-separating section, through phaselocked loop, and
Net side voltage-phase is transmitted to 4QC, so that 4QC controls tractive transformer according to voltage on line side phase and phase transition relationship
Secondary side voltage-phase is identical as voltage on line side phase, wherein phase transition relationship is the primary side voltage phase of tractive transformer
The transformational relation of the secondary side voltage-phase of position and tractive transformer.
S105, processor are when the primary side voltage-phase for determining tractive transformer is equal with voltage on line side phase, closure
Main circuit breaker keeps main contactor closure.
Specifically, before hybrid electric vehicle group crosses phase-separating section, processor control closure main circuit breaker and main contactor make
Obtaining contact net being capable of normal power supply.When processor receives pre- phase-separating section signal excessively, processor controls main circuit breaker and disconnects, and protects
Main contactor closure is held, so that 4QC is in inverter mode.When hybrid electric vehicle group crosses phase-separating section, processor controls DC/DC electricity
Cell system provides DC voltage, guarantees that hybrid electric vehicle group can operate normally.At the end of hybrid electric vehicle group crosses phase-separating section,
Processor obtains the voltage on line side phase of contact net by phaselocked loop, and transmits the voltage on line side phase to 4QC, in this way, 4QC
According to the voltage on line side phase and phase transition relationship, so that the secondary side voltage-phase of tractive transformer and voltage on line side phase
Keep identical, so that hybrid electric vehicle group be avoided to damage.The primary side voltage-phase and net of tractive transformer are determined in processor
When side voltage-phase is equal, control main circuit breaker closure keeps main contactor closure, the power supply for the net that resumes contacts, so that mixing
Power car group operates normally, and can also maintain normal work vehicle-mounted in hybrid electric vehicle group.
Mixed motor train traction method for controlling passing neutral section provided in this embodiment, by handling in pre- phase-separating section excessively
Device control disconnects main circuit breaker, still main contactor is kept to be closed, so that 4QC is in inverter mode, and processor control DC/DC electricity
Cell system provides DC voltage, guarantees that hybrid electric vehicle group has enough power to pass through phase-separating section.It is excessive in hybrid electric vehicle group
At the end of phase region, processor gets the voltage on line side phase of contact net by phaselocked loop in real time, and transmits contact net to 4QC
Voltage on line side phase, 4QC can be according to the voltage on line side phases and phase transition relationship of contact net, to adjust tractive transformer
Primary side voltage-phase so that the voltage on line side phase of the primary side voltage-phase of tractive transformer and contact net keeps phase
Together, hybrid electric vehicle group is avoided to be damaged when entering power-feed section.The present embodiment passes through entire mistake in hybrid electric vehicle group
The good fit of 4QC and DC/DC battery system is realized during phase-separating section, and hybrid electric vehicle group is transported safely
Row, while the service life of main contactor is extended, reduce the operation difficulty of driver.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of traction convertor characterized by comprising phaselocked loop, main circuit breaker, tractive transformer, main contactor, four-quadrant
Limit rectifier 4QC and DC/DC battery system；
Wherein, the phaselocked loop is used to detect the voltage on line side phase of contact net, the main circuit breaker for control pantograph with
The closing or opening of the contact net, power supply, the traction so that the contact net is powered or stopped to the tractive transformer
Transformer is electrically connected with the main contactor, and the main contactor is electrically connected with the 4QC, the DC/DC battery system and institute
State 4QC electrical connection；
The traction convertor further include: processor, wherein the processor respectively with the phaselocked loop, the main circuit breaker,
The tractive transformer, the main contactor, the 4QC and DC/DC battery system electrical connection；
The processor, for being closed the main circuit breaker and the main contactor before hybrid electric vehicle group crosses phase-separating section；
When receiving pre- phase-separating section signal excessively, the main circuit breaker is disconnected, the main contactor is kept to be closed；In the hybrid power
When vehicle group crosses phase-separating section, controls the DC/DC battery system and DC voltage is provided；Phase-separating section knot is crossed in the hybrid electric vehicle group
Shu Shi obtains the voltage on line side phase by the phaselocked loop, and transmits the voltage on line side phase to the 4QC, so that
The 4QC controls the secondary side voltage-phase of the tractive transformer according to the voltage on line side phase and phase transition relationship
It is identical as voltage on line side phase, wherein primary side voltage-phase and institute of the phase transition relationship for the tractive transformer
State the transformational relation of the secondary side voltage-phase of tractive transformer；The primary side voltage-phase that determines the tractive transformer with
When the voltage on line side phase is equal, it is closed the main circuit breaker, the main contactor is kept to be closed.
2. traction convertor according to claim 1, which is characterized in that the traction convertor further include: traction inversion
Device；
Wherein, the traction invertor is electrically connected between the 4QC and the DC/DC battery system, so that the 4QC or institute
It states DC/DC battery system and provides DC voltage to the traction invertor, the traction invertor is also used to be electrically connected traction electricity
Machine.
3. traction convertor according to claim 1, which is characterized in that the traction convertor further include: auxiliary converter
Device；
Wherein, the AuCT is electrically connected between the 4QC and the DC/DC battery system, so that the 4QC or institute
It states DC/DC battery system and provides DC voltage to the AuCT, the AuCT is used for the hybrid power
The power supply of vehicle group.
4. traction convertor according to claim 3, which is characterized in that the traction convertor further include: over-voltage suppression
Circuit；
Wherein, the overvoltage suppression circuit is electrically connected between the 4QC and the DC/DC battery system, described for preventing
The DC voltage that 4QC or the DC/DC battery system are provided to the subordinate inverter is excessive.
5. traction convertor according to claim 1-4, which is characterized in that the work of the hybrid electric vehicle group
Mode includes: any one of traction working condition, damped condition and inertia operating condition.
6. traction convertor according to claim 3, which is characterized in that
The processor, for crossing phase-separating section in the hybrid electric vehicle group when the operating mode of the 4QC is traction working condition
Before, it is closed the main circuit breaker and the main contactor, so that the contact net powers to the 4QC and to the DC/DC
Battery system charging；When the hybrid electric vehicle group crosses phase-separating section, the DC/DC battery system is controlled to the traction inversion
Device provides DC voltage and maintains leading for the hybrid electric vehicle group so that the traction invertor is powered to the traction electric machine
Gravitation, control the DC/DC battery system also to the AuCT provide DC voltage so that the AuCT to
The hybrid electric vehicle group power supply；
The processor is also used to cross split-phase in the hybrid electric vehicle group when the operating mode of the 4QC is damped condition
Before area, it is closed the main circuit breaker and the main contactor, so that the 4QC transmits regenerative braking energy to the contact net
Amount；When the hybrid electric vehicle group crosses phase-separating section, controls the DC/DC battery system and receive the described anti-of the 4QC transmission
Braking energy is presented, and controls the DC/DC battery system and provides DC voltage to the traction invertor, so that the traction is inverse
Become device power to the traction electric machine, maintain the brake force of the hybrid electric vehicle group, control the DC/DC battery system also to
The AuCT provides DC voltage, so that the AuCT is powered to the hybrid electric vehicle group；
The processor is also used to cross split-phase in the hybrid electric vehicle group when the operating mode of the 4QC is inertia operating condition
Before area, it is closed the main circuit breaker and the main contactor, so that the contact net powers to the 4QC and to the DC/
The charging of DC battery system；When the hybrid electric vehicle group crosses phase-separating section, controls the DC/DC battery system and become to the auxiliary
It flows device and DC voltage is provided, so that the AuCT is powered to the hybrid electric vehicle group.
7. traction convertor according to claim 1, which is characterized in that the traction convertor further include: power packet；
Wherein, the power packet is electrically connected with the 4QC, for powering to the 4QC.
8. traction convertor according to claim 7, which is characterized in that the traction convertor further include: the first preliminary filling
Electric installation；
Wherein, the power packet is electrically connected with first pre-charging device, and first pre-charging device is electrically connected to described
Between tractive transformer and the 4QC.
9. traction convertor according to claim 1, which is characterized in that the DC/DC battery system includes: energy storage dress
It sets, DC/DC chopper and the second pre-charging device；
Wherein, the energy storage device is electrically connected with the DC/DC chopper, the DC/DC chopper and second precharge
Device electrical connection, second pre-charging device are electrically connected between the traction invertor and the 4QC.
10. traction convertor according to claim 1, which is characterized in that the traction convertor further include: third preliminary filling
Electric installation；
Wherein, the third pre-charging device is electrically connected between the 4QC and the DC/DC battery system.
11. a kind of mixed motor train traction passing neutral section control system characterized by comprising contact net, traction electric machine and
Such as the described in any item traction convertors of claim 1-10；
Wherein, the contact net is electrically connected with the traction convertor, and the traction convertor is electrically connected with the traction electric machine.
12. a kind of mixed motor train traction method for controlling passing neutral section, which is characterized in that it is applied to traction convertor, it is described to lead
Draw current transformer include: processor, phaselocked loop, main circuit breaker, tractive transformer, main contactor, four-quadrant rectifier 4QC and
DC/DC battery system, wherein the processor respectively with the phaselocked loop, the main circuit breaker, the tractive transformer, institute
It states main contactor, the 4QC and DC/DC battery system electrical connection, the phaselocked loop and is used to detect the net side of contact net
Voltage-phase, the main circuit breaker are used to control the closing or opening of pantograph Yu the contact net so that the contact net to
The tractive transformer power supply stops power supply, and the tractive transformer is electrically connected with the main contactor, the main contactor
It is electrically connected with the 4QC, the DC/DC battery system is electrically connected with the 4QC, and the DC/DC battery system is also used to mixed
Close the power supply of power car group；
The described method includes:
The processor is closed the main circuit breaker and the main contactor before the hybrid electric vehicle group crosses phase-separating section；
The processor disconnects the main circuit breaker when receiving pre- phase-separating section signal excessively, and the main contactor is kept to be closed；
The processor controls the DC/DC battery system and provides DC voltage when the hybrid electric vehicle group crosses phase-separating section；
The processor obtains the voltage on line side at the end of hybrid electric vehicle group crosses phase-separating section, through the phaselocked loop
Phase, and the voltage on line side phase is transmitted to the 4QC, so that the 4QC turns according to the voltage on line side phase and phase
Relationship is changed, the secondary side voltage-phase for controlling the tractive transformer is identical as voltage on line side phase, wherein the phase transition
Relationship is that the conversion of the primary side voltage-phase of the tractive transformer and the secondary side voltage-phase of the tractive transformer is closed
System；
The processor is closed when the primary side voltage-phase for determining the tractive transformer is equal with the voltage on line side phase
The main circuit breaker is closed, the main contactor is kept to be closed.
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| CN201810978784.3A CN109088534A (en) | 2018-08-27 | 2018-08-27 | Traction convertor, mixed motor train traction passing neutral section control system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481388A (en) * | 2019-07-17 | 2019-11-22 | 中车永济电机有限公司 | High-power permanent magnet directly drives locomotive traction system automatic passing over of neutral section control method |
| CN111546948A (en) * | 2020-05-09 | 2020-08-18 | 中车株洲电力机车有限公司 | Locomotive auxiliary power supply circuit and power supply method |
| CN113300579A (en) * | 2020-02-24 | 2021-08-24 | 株洲中车时代电气股份有限公司 | Multisource power supply equipment and system of engineering vehicle |
| CN113572129A (en) * | 2021-07-06 | 2021-10-29 | 成都尚华电气有限公司 | Control method and system for inhibiting train traction transformer excitation inrush current and train |
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2018
- 2018-08-27 CN CN201810978784.3A patent/CN109088534A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481388A (en) * | 2019-07-17 | 2019-11-22 | 中车永济电机有限公司 | High-power permanent magnet directly drives locomotive traction system automatic passing over of neutral section control method |
| CN110481388B (en) * | 2019-07-17 | 2022-11-22 | 中车永济电机有限公司 | Automatic phase-passing control method for traction system of high-power permanent magnet direct-drive locomotive |
| CN113300579A (en) * | 2020-02-24 | 2021-08-24 | 株洲中车时代电气股份有限公司 | Multisource power supply equipment and system of engineering vehicle |
| CN111546948A (en) * | 2020-05-09 | 2020-08-18 | 中车株洲电力机车有限公司 | Locomotive auxiliary power supply circuit and power supply method |
| CN111546948B (en) * | 2020-05-09 | 2024-04-09 | 中车株洲电力机车有限公司 | Locomotive auxiliary power supply circuit and power supply method |
| CN113572129A (en) * | 2021-07-06 | 2021-10-29 | 成都尚华电气有限公司 | Control method and system for inhibiting train traction transformer excitation inrush current and train |
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