CN107963087A - Large-tonnage hybrid powder motor car energy storage device and method - Google Patents
Large-tonnage hybrid powder motor car energy storage device and method Download PDFInfo
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- CN107963087A CN107963087A CN201711285405.4A CN201711285405A CN107963087A CN 107963087 A CN107963087 A CN 107963087A CN 201711285405 A CN201711285405 A CN 201711285405A CN 107963087 A CN107963087 A CN 107963087A
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- tonnage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
-
- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
- B61C3/02—Electric locomotives or railcars with electric accumulators
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- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- 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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
-
- 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
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to a kind of large-tonnage hybrid powder motor car energy storage device and method, which includes traction accumulator(1), protective resistance(2), support capacitance(3), inverter(4), traction electric machine(5), filter inductance(6), high-side capacitance(7), two-way DC/DC converters(8), energy storage inductor(9)And ultracapacitor(10).Traction accumulator(1)And ultracapacitor(10)Form hybrid power source system, storage battery energy density height and the high advantage of super capacitor power density can be played at the same time, effectively reduce Vehicular accumulator cell usage quantity, improve adaptability of the electric propulsion system to moment high power load, the energy use efficiency of electrodynamic source system is improved, effectively reduces the maintenance cost of large-tonnage electric locomotive.Using such scheme proposed by the present invention, the new high added value market of power and economic performance for raising large-tonnage electric locomotive, developing, the state basic policy for complying with energy-saving and emission-reduction will all have important strategy and Practical significance.
Description
Technical field
The present invention relates to large-tonnage electric locomotive energy storage device design field, more particularly to locomotive energy-storage system Performance Evaluation skill
Art, and in particular to a kind of large-tonnage hybrid powder motor car energy storage device and method.
Background technology
Large-tonnage power electric locomotive has many applications in mine, underground etc., its energy supplying system traditional approach is mainly using storage
Battery is as energy supplying system.But since the power density of storage battery is relatively low, to provide electric locomotive in startup, climbing, acceleration etc.
Moment significant power demand under operating mode is, it is necessary to which extra storage battery group meets the power termination demand, so as to cause vehicular electricity storage
Tankage is needed more than electric locomotive actual energy, increase storage battery group weight, volume and corresponding financial cost;Meanwhile electric power storage
Pond can repeated charge number it is limited, allow operating temperature range narrow.Filled especially for the high current for meeting instantaneous power demand
Electric discharge meeting serious curtailment service lifetime of accumulator, increases maintenance cost and duration, causes the increasing of electric locomotive overall life cycle cost
Add.By the way of super capacitor is mixed with storage battery, it is expected to preferably solve to be used as the motor of power source by the use of storage battery merely
Car energy supplying system, super capacitor power density are 10~100 times of battery power density, can be electric locomotive start, accelerate,
Climbing provides instantaneous large-current when operating mode, avoids the heavy-current discharge of storage battery;In descending or braking, feedback current can quilt
Super capacitor effectively absorbs, so as to protect storage battery, from heavy current impact, increasing storage battery service life, effectively reduces at the same time
The volume and weight of Vehicular accumulator cell group;Do not chemically reacted during super capacitor energy-storage, can charge repeatedly million times with
On, and charge/discharge rates are fast/efficient, and it is substantially non-maintaining, it can effectively reduce the overall life cycle cost of electric locomotive.
Some domestic and international personnel have built various vehicle-mounted and road surface power supply device.Document 1:R. Barrero, X.
Tackoen, J. Van Mierlo Analysis and configuration of supercapacitor based
energy storage system on-board light rail vehicles[C]. 13th Power Electronics
Using super in 2008. pp. 1512-1517. of and Motion Control Conference, 2008. EPE-PEMC
Level capacitance progress track train is energy saving, can reduce the energy consumption of track train.Document 2:Hansang Lee, Hanmin Lee,
Changmu Lee, Gilsoo Jang and Gildong Kim. Energy Storage Application Strategy
on DC Electric Railroad System using a Novel Railroad Analysis Algorithm[J]
.Journal of Electrical Engineering & Technology Vol. 5, No. 2, 2010, pp. 228-
238, super capacitor efficiency for charge-discharge is mainly improved using algorithm.
At present, too many correlative study is designed without to large-tonnage hybrid accumulator both at home and abroad.To the circuit of hybrid energy-storing
Build, performance test and the capacity configuration of storage battery and super capacitor mixing arrangement do not design reasonably.Mixed for large-tonnage
The design of power electric locomotive energy storage device is closed, there is presently no perfect technical solution.
The content of the invention
In order to solve the above technical problem, the present invention provides a kind of large-tonnage hybrid powder motor car energy storage device and side
Method, hybrid energy-storing mode is simple to operation, effectively reduces Vehicular accumulator cell usage quantity, and it is big to moment to improve electric propulsion system
The adaptability of power termination, improves the energy use efficiency of electrodynamic source system, effectively reduces the maintenance of large-tonnage electric locomotive
Cost.
To achieve these goals, the present invention adopts the following technical scheme that.
The invention discloses a kind of large-tonnage hybrid powder motor car energy storage device, it includes traction accumulator, protection electricity
Resistance, support capacitance, inverter, traction electric machine, filter inductance, high-side capacitance, two-way DC/DC converters, energy storage inductor and super
Capacitor.
The traction accumulator:For its power density it is low, storage energy more than characteristic, can be by it as main power source pair
Electric locomotive is energized, its output terminal is connected with protective resistance;
The protective resistance:Since traction accumulator output is direct current, protective resistance is stored mainly as partial pressure original paper with traction
Battery concatenates, for protecting traction accumulator;
The support capacitance:For making inverter obtain more stable DC bus-bar voltage and filtering out low-order harmonic, its output terminal
It is connected with the input terminal of inverter;
The inverter:Direct current for traction accumulator to be exported is changed into alternating current, for large-tonnage hybrid locomotrives
Traction electric machine use;Its output terminal is connected with traction electric machine;
The traction electric machine:As the draw-gear of large-tonnage hybrid powder motor car, it is used to drive hybrid locomotrives
Movement;
The filter inductance:For filtering out the harmonic component of super capacitor group input direct-current busbar, its one end and dc bus phase
Even, its other end is connected with two-way DC/DC converters;
The high-side capacitance:For powering to two-way DC/DC converters, when two-way DC/DC converters work in different mode,
Its charge-discharge characteristic can change.
The two-way DC/DC converters:Mainly by varying its operating mode, in different modes to super capacitor
Device discharge and recharge;
The energy storage inductor:In high-power applications occasion, in order to make two-way DC/DC converters continuous work, energy storage inductor rear end
Concatenated with ultracapacitor;
The ultracapacitor:It is in parallel with two-way DC/DC converters progress;According to its high power characteristic, in hybrid powder motor
In car upward slope, descending and docking process booster action can be carried out to its bulk supply characteristic.
Preferably, the traction accumulator is high density high-capacity lead-acid storage battery, and rational capacity configuration is carried out to it
Stable energy output, the functional unit for load can be provided afterwards.
In any of the above-described technical solution preferably, the traction accumulator needs rationally to carry out capacity configuration to it,
Combined by plurality of groups of storage batteries connection in series-parallel to meet to drive electric locomotive stable operation.
In any of the above-described technical solution preferably, the protective resistance need to use adjustable resistance, with adapt to source and
The changed power of load end.
In any of the above-described technical solution preferably, the both ends for supporting capacitance to be connected in parallel on inverter, make inverter
Obtain more stable DC bus-bar voltage and filter out low-order harmonic.
In any of the above-described technical solution preferably, the inverter front end simultaneously connects support capacitance, after the inverter
End concatenation traction electric machine;The inverter uses multi-level inverse conversion topological structure, can provide powerful pulling figure.
In any of the above-described technical solution preferably, the inverter uses three-polar output inverter, for traction
Input end of motor carries out phase matched.
In any of the above-described technical solution preferably, the traction electric machine is connected with inverter, it uses alternating current traction
Motor, simple and reliable for structure, small, light-weight, speed-regulating range width.
In any of the above-described technical solution preferably, the filter inductance, one is terminated on dc bus, its is another
End is concatenated with ultracapacitor, for filtering out the harmonic component of super capacitor group input direct-current busbar.
In any of the above-described technical solution preferably, the filter inductance also forms a filtering with high-side capacitance at the same time
Circuit, processing is filtered to its input and output signal.
In any of the above-described technical solution preferably, the high-side capacitance is concatenated with filter inductance, is become with two-way DC/DC
Parallel operation simultaneously connects, for making two-way DC/DC converters both end voltage steady and filtering off higher hamonic wave.
In any of the above-described technical solution preferably, the two-way DC/DC converters, mainly by varying its Working mould
Formula, for charging under buck patterns to ultracapacitor, and the super electricity connected under boost patterns by its rear end
Container outwards discharges.
In any of the above-described technical solution preferably, the two-way DC/DC converters, using the Top Modules of bi-directional half bridge
Formula, to reduce the bearing stress of switch original paper, its front end parallel connection high-side capacitance, rear end is by tap and connects ultracapacitor.
In any of the above-described technical solution preferably, the two-way DC/DC converters select suitable topological mode, with
Its respective switch component is set to carry less voltage.
In any of the above-described technical solution preferably, the energy storage inductor, two-way DC/DC converters are in high-power applications
Occasion, in order to avoid two-way DC/DC converters are operated in discontinuous mode and cause inductive current excessive and switching tube crest voltage
Excessive, its electric induction is operated in continuous mode, and design load should meet boosting and decompression mode, thus designs one at energy storage end
A energy storage inductor.
In any of the above-described technical solution preferably, the ultracapacitor, using energy density is low, power density is high
Double layer capacitor, rational connection in series-parallel is carried out to it, the capacity configuration being optimal, its with two-way DC/DC converters into
Row is in parallel, by its electrical characteristic, comes into operation in electric locomotive climbing, descending and parking, special to compensate traction accumulator electricity
The characteristics of property is insufficient.
In any of the above-described technical solution preferably, the ultracapacitor uses multigroup connection in series-parallel integrated mode, with
Meet its capacity configuration requirement.
The invention also discloses a kind of large-tonnage hybrid powder motor car energy storage method, this method uses as above any one institute
The large-tonnage hybrid powder motor car energy storage device stated, this method comprises the following steps:
Step 1, first according to the capacity of electric locomotive bearing power reasonable disposition traction accumulator;
Step 2, the resistance value size of protective resistance is arranged as required to, it is met protection demand;
Step 3, according to large-tonnage hybrid powder motor car energy storage device characteristic, opening up for suitable two-way DC/DC converters is selected
Flutter pattern;
Step 4, according to the capacity of the characteristic reasonable disposition ultracapacitor of electric locomotive source-load end;
Step 5, repeat step 2, step 3 and step 4, are configured with obtaining optimal large-tonnage hybrid powder motor car energy storage device
Scheme.
The present invention provides a kind of large-tonnage hybrid powder motor car energy storage device as described above and large-tonnage mixing are dynamic
Force motor car energy storage method.Flexibility and energy-efficient performance due to hybrid accumulator, the design method of proposition are simple to operation;
The large-tonnage hybrid powder motor car energy storage method is by the way of storage battery and super capacitor are combined, to using single accumulation of energy
Device lifts its advantage, while the shortcomings that by mutually compensating for evading single energy-storage system, to large-tonnage electric locomotive hybrid power
Design method is provided, reference is provided in other field application to mixing energy saver.
Compared with prior art, above-mentioned technical proposal of the invention has the advantages that:
The useful achievement of the present invention has been to provide a kind of design of large-tonnage hybrid powder motor car energy storage device and method.The skill
For art scheme because using hybrid energy-storing mode, the energy storage device of proposition is simple to operation;Device is conducive to improve electric locomotive in cold
The adaptability of season operation.Power of the design of storage battery-super capacitance hybrid power source system and device for raising electric locomotive
New high added value market, the state basic policy for complying with energy-saving and emission-reduction all will have important strategy to anticipate with practical with economic performance, developing
Justice.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the storage of large-tonnage hybrid powder motor car energy storage device according to the invention and a preferred embodiment of method
Can apparatus structure schematic diagram;
Fig. 2 is the energy storage side of large-tonnage hybrid powder motor car energy storage device according to the invention and a preferred embodiment of method
Method flow diagram.
Reference numeral:
1st, traction accumulator, 2, protective resistance, 3, support capacitance, 4, inverter, 5, traction electric machine, 6, filter inductance, 7, high-end
Capacitance, 8, two-way DC/DC converters, 9, energy storage inductor, 10, ultracapacitor.
Embodiment
At present, the design of large-tonnage hybrid powder motor car energy storage device is also without perfect technical solution, in consideration of it, this hair
Bright embodiment proposes a kind of large-tonnage hybrid powder motor car energy storage device and method.
The large-tonnage hybrid powder motor car energy storage device of the embodiment of the present invention mainly includes:Traction accumulator, protection electricity
Resistance, Support Capacitor, inverter, traction electric machine, filter inductance, high-side capacitance, two-way DC/DC converters, energy storage inductor and super
Capacitor;Traction accumulator and ultracapacitor constitute hybrid power source system, can play storage battery energy density at the same time
The high and high advantage of super capacitor power density, effectively reduces Vehicular accumulator cell usage quantity, improves electric propulsion system to moment
The adaptability of high power load, improves the energy use efficiency of electrodynamic source system, effectively reduces the dimension of large-tonnage electric locomotive
Protect cost.Attached drawing 1 to 2 is the system structural framework and step explanation of the embodiment of the present invention.Once its connection mode is erected, can
Simply to realize that electric locomotive dynamical system is adaptable, reduce electric locomotive overall weight, improves its security.
The such scheme proposed using the embodiment of the present invention, for improve large-tonnage electric locomotive power and economic performance,
The state basic policy for open up new high added value market, complying with energy-saving and emission-reduction will all have important strategy and Practical significance.
Below in conjunction with the attached drawing 1 to 2 in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear
Chu, be fully described by.Embodiments described below is only part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, what those of ordinary skill in the art were obtained without making creative work is all
Other embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1, large-tonnage hybrid powder motor car energy storage device includes traction accumulator 1, protective resistance 2, supports
Capacitance 3, inverter 4, traction electric machine 5, filter inductance 6, high-side capacitance 7, two-way DC/DC converters 8, energy storage inductor 9 and super
Capacitor 10, wherein:
Traction accumulator 1, for its power density it is low, storage energy more than characteristic, can by its as main power source to electric locomotive
Energized, its output terminal is connected with protective resistance 2;
Protective resistance 2, since the output of traction accumulator 1 is direct current, mainly as partial pressure original paper, it is used to protect protective resistance 2
Protect traction accumulator 1;
Support capacitance 3, for making inverter 4 obtain more stable DC bus-bar voltage and filtering out low-order harmonic, its output terminal with
The input terminal of inverter 4 is connected;
Inverter 4, the direct current for traction accumulator 1 to be exported are changed into alternating current, for large-tonnage hybrid locomotrives
Traction electric machine 5 uses, its output terminal is connected with traction electric machine 5;
Traction electric machine 5, as the draw-gear of large-tonnage hybrid powder motor car, it is used for the fortune for driving hybrid locomotrives
It is dynamic;
Filter inductance 6, for filtering out the harmonic component of super capacitor group input direct-current busbar, its one end is connected with dc bus,
Its other end is connected with two-way DC/DC converters 8;
High-side capacitance 7, for powering to two-way DC/DC converters 8, when two-way DC/DC converters 8 work in different mode,
Its charge-discharge characteristic can change;
Two-way DC/DC converters 8, mainly by varying its operating mode, for being filled in different modes to ultracapacitor 10
Electric discharge;
Energy storage inductor 9, in high-power applications occasion, in order to make two-way 8 continuous work of DC/DC converters, its rear end and super electricity
Container 10 concatenates;
Ultracapacitor 10, carried out with two-way DC/DC converters 8 it is in parallel, according to its high power characteristic, in hybrid powder motor car
Go up a slope, can carry out booster action to its bulk supply characteristic in descending and docking process.
Large-tonnage hybrid powder motor car energy storage device described in the present embodiment, its traction accumulator 1 are high density great Rong
Lead-acid accumulator is measured, rational capacity is carried out to it matches somebody with somebody to postpone that stable energy output, the functional unit for load can be provided.
As shown in Figure 1, the traction accumulator of the large-tonnage hybrid powder motor car energy storage device described in the present embodiment is pressed
According to progress rational capacity configuration is needed, combined by plurality of groups of storage batteries connection in series-parallel to meet to drive electric locomotive stable operation.
The protective resistance 2 of large-tonnage hybrid powder motor car energy storage device described in the present embodiment need to use adjustable resistance,
To adapt to the changed power of source and load end.
As shown in Figure 1, the large-tonnage hybrid powder motor car energy storage device described in the present embodiment, its protective resistance is with leading
Draw storage battery 1 to concatenate, traction accumulator 1 is exported stable electric power.
As shown in Figure 1, the large-tonnage hybrid powder motor car energy storage device described in the present embodiment, it supports that capacitance 3 is in parallel
At the both ends of inverter 4, inverter 4 is obtained more stable DC bus-bar voltage and filter out low-order harmonic.
As shown in Figure 1, the large-tonnage hybrid powder motor car energy storage device described in the present embodiment, its 4 front end of inverter is simultaneously
Connect and support capacitance 3, its 4 rear end of inverter concatenation traction electric machine 5;Inverter uses multi-level inverse conversion topological structure, can provide
Powerful pulling figure.
As shown in Figure 1, the inverter 4 of the large-tonnage hybrid powder motor car energy storage device described in the present embodiment uses three ends
Output inverter, for carrying out phase matched to 5 input terminal of traction electric machine.
As shown in Figure 1, the large-tonnage hybrid powder motor car energy storage device described in the present embodiment, its traction electric machine 5 with it is inverse
Become device 4 to connect, it uses AC traction electric motor, simple and reliable for structure, small, light-weight, speed-regulating range width.
As shown in Figure 1, the filter inductance of the large-tonnage hybrid powder motor car energy storage device described in the present embodiment, one
Terminate on dc bus, its other end is concatenated with ultracapacitor 10, for filtering out super capacitor group input direct-current busbar
Harmonic component;Filter inductance also forms a filter circuit with high-side capacitance 7 at the same time, its input and output signal is filtered
Ripple processing.
As shown in Figure 1, the large-tonnage hybrid powder motor car energy storage device described in the present embodiment, its high-side capacitance and filter
Ripple inductance 6 concatenates, with two-way DC/DC converters 8 and connecing, for making two-way 8 both end voltage of DC/DC converters steady and filtering off high
Subharmonic.
As shown in Figure 1, the large-tonnage hybrid powder motor car energy storage device described in the present embodiment, its two-way DC/DC conversion
Device 8, mainly by varying its operating mode, under buck patterns to ultracapacitor(10)Charging, in boost patterns
The ultracapacitor 10 connected by its rear end down outwards discharges.
Two-way DC/DC converters 8 select suitable topological mode, so that its respective switch component carries less electricity
Pressure.The two-way DC/DC converters of large-tonnage hybrid powder motor car energy storage device described in the present embodiment, using bi-directional half bridge
Topological mode, reduces the bearing stress of switch original paper, its front end parallel connection high-side capacitance 7, rear end is by tap and connects super capacitor
Device 10.
The energy storage inductor 9 of large-tonnage hybrid powder motor car energy storage device described in the present embodiment:Two-way DC/DC converters
In high-power applications occasion, in order to avoid two-way DC/DC converters are operated in discontinuous mode and cause inductive current excessive and open
It is excessive to close pipe crest voltage, its electric induction is operated in continuous mode, and design load should meet boosting and decompression mode, thus exist
An energy storage inductor is designed at energy storage end, as shown in Figure 1.
Ultracapacitor 10 uses multigroup connection in series-parallel integrated mode, to meet its configuration requirement.As shown in Figure 1, this implementation
The ultracapacitor of large-tonnage hybrid powder motor car energy storage device described in example, using energy density is low, power density is high
Double layer capacitor, rational connection in series-parallel is carried out to it, the capacity configuration being optimal, it is carried out with two-way DC/DC converters 8
Parallel connection, by its electrical characteristic, comes into operation, to compensate 1 electrical characteristics of traction accumulator in electric locomotive climbing, descending and parking
The characteristics of insufficient.
Large-tonnage hybrid powder motor car energy storage device described in the present embodiment, its ultracapacitor 10 select it is high-power,
Large capacity, the EDLC225-450V capacitors of big energy storage.
Large-tonnage hybrid powder motor car energy storage device described in the present embodiment, it is simple in structure, it is easy to implement.
Large-tonnage hybrid powder motor car energy storage method, has used large-tonnage hybrid powder motor car energy storage as described above
Device.As shown in Fig. 2, this method comprises the following steps:
Step 1, first according to the capacity of electric locomotive bearing power reasonable disposition traction accumulator 1;
Step 2, the resistance value size of protective resistance 2 is arranged as required to, it is met protection demand;
Step 3, according to large-tonnage hybrid powder motor car energy storage device characteristic, opening up for suitable two-way DC/DC converters 8 is selected
Flutter pattern;
Step 4, according to the capacity of the characteristic reasonable disposition ultracapacitor 10 of electric locomotive source-load end;
Step 5, repeat step 2, step 3 and step 4, are configured with obtaining optimal large-tonnage hybrid powder motor car energy storage device
Scheme.
Large-tonnage hybrid powder motor car energy storage device and method described in the present embodiment, because using hybrid energy-storing mode,
The energy storage device of proposition is simple to operation;Device is conducive to improve adaptability of the electric locomotive in cold season operation.Storage battery-super
The design of level capacitance hybrid power source system and device is for the power that the improves electric locomotive high added value new with economic performance, developing
Market, the state basic policy for complying with energy-saving and emission-reduction will all have important strategy and Practical significance.
The above is only that the preferred embodiment of the present invention is described, and is not that the scope of the present invention is limited
It is fixed;The foregoing is merely the embodiment of the present invention, the protection domain being not intended to limit the present invention;Do not departing from
On the premise of design spirit of the present invention, what this area ordinary skill technical staff made technical scheme any repaiies
Change, equivalent substitution, improvement etc., should all fall into the protection domain that claims of the present invention determines.
Claims (10)
1. a kind of large-tonnage hybrid powder motor car energy storage device, including traction accumulator(1), it is characterised in that:The device is also
Including protective resistance(2), support capacitance(3), inverter(4), traction electric machine(5), filter inductance(6), high-side capacitance(7), it is double
To DC/DC converters(8), energy storage inductor(9)And ultracapacitor(10);
The traction accumulator(1), electric locomotive is energized as main power source, its output terminal and protective resistance(2)Series connection;
The protective resistance(2), as partial pressure original paper, with traction accumulator(1)Concatenation, for protecting traction accumulator(1);
The support capacitance(3), for making inverter(4)Obtain stable DC bus-bar voltage and filter out low-order harmonic, its is defeated
Outlet and inverter(4)Input terminal be connected;
The inverter(4), for traction accumulator(1)The direct current of output is changed into alternating current, is mixed for large-tonnage dynamic
The traction electric machine of power locomotive(5)Use, its output terminal and traction electric machine(5)It is connected;
The traction electric machine(5), as the draw-gear of large-tonnage hybrid powder motor car, it is used to drive hybrid locomotrives
Movement;
The filter inductance(6), for filtering out the harmonic component of super capacitor group input direct-current busbar, its one end and dc bus
It is connected, its other end and two-way DC/DC converters(8)It is connected;
The high-side capacitance(7), for two-way DC/DC converters(8)Power supply, in two-way DC/DC converters(8)Work in not
During with pattern, its charge-discharge characteristic changes;
The two-way DC/DC converters(8), by varying its operating mode, in different modes to ultracapacitor
(10)Discharge and recharge;
The energy storage inductor(9), make two-way DC/DC converters(8)Continuous work, its rear end and ultracapacitor(10)Concatenation;
The ultracapacitor(10), with two-way DC/DC converters(8)Parallel connection, in hybrid powder motor car upward slope, descending and stops
Booster action is carried out to its bulk supply characteristic during car.
2. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The traction accumulator
(1)For high density high-capacity lead-acid storage battery.
3. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The traction accumulator
(1)Capacity configuration is combined for plurality of groups of storage batteries connection in series-parallel.
4. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The protective resistance
(2)With traction accumulator(1)Concatenation.
5. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The protective resistance
(2)Using adjustable resistance.
6. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The support capacitance
(3)It is connected in parallel on inverter(4)Both ends.
7. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The inverter(4)
Front end simultaneously connects support capacitance(3), the inverter(4)Rear end concatenates traction electric machine(5).
8. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The inverter(4)
Using multi-level inverse conversion topological structure.
9. large-tonnage hybrid powder motor car energy storage device as claimed in claim 1, it is characterised in that:The inverter(4)
Using three-polar output inverter.
10. a kind of large-tonnage hybrid powder motor car energy storage method, uses big ton as claimed in any one of claims 1-9 wherein
Position hybrid powder motor car energy storage device, it is characterised in that:This method comprises the following steps:
Step 1, first according to electric locomotive bearing power reasonable disposition traction accumulator(1)Capacity;
Step 2, it is arranged as required to protective resistance(2)Resistance value size, it is met protection demand;
Step 3, according to large-tonnage hybrid powder motor car energy storage device characteristic, suitable two-way DC/DC converters are selected(8)'s
Topological mode;
Step 4, according to the characteristic reasonable disposition ultracapacitor of electric locomotive source-load end(10)Capacity;
Step 5, repeat step 2, step 3 and step 4, are configured with obtaining optimal large-tonnage hybrid powder motor car energy storage device
Scheme.
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