CN106809027B - The braking recovery system and method and train of train - Google Patents

The braking recovery system and method and train of train Download PDF

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Publication number
CN106809027B
CN106809027B CN201610841066.2A CN201610841066A CN106809027B CN 106809027 B CN106809027 B CN 106809027B CN 201610841066 A CN201610841066 A CN 201610841066A CN 106809027 B CN106809027 B CN 106809027B
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China
Prior art keywords
train
traction networks
braking
voltage
energy
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CN201610841066.2A
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Chinese (zh)
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CN106809027A (en
Inventor
李道林
罗文刚
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BYD Co Ltd
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BYD Co Ltd
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Publication of CN106809027A publication Critical patent/CN106809027A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/13—Trolley wires
    • 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
    • B60M3/06—Arrangements for consuming regenerative power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
    • 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
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • 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
    • 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)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses the braking recovery system and method and train of a kind of train, which includes: Traction networks, train and energy-accumulating power station, and train includes: electric brake；Charging capacitor；Distributor is connected with electric brake, has node between the two；Two-way DC/DC converter, one end are connected with charging capacitor, and the other end is connected with the node；First controller is used to control two-way DC/DC converter so that charging capacitor absorbs train braking electric energy according to the voltage of Traction networks in train braking；Energy-accumulating power station is connected with Traction networks, and energy-accumulating power station includes second controller, and second controller is used to carry out charge or discharge according to the voltage of Traction networks.The embodiment of the present invention absorbs braking electric energy by charging capacitor on train and energy-accumulating power station; to realize the recycling and reuse of braking electric energy; reduce energy waste; reduce the load of Traction networks; and the voltage of Traction networks is effectively monitored; system parts are protected, security of system is improved.

Description

The braking recovery system and method and train of train
Technical field
The present invention relates to technical field of rail traffic, in particular to braking recovery system, one kind of a kind of train have should The braking recovery method of the train of system and a kind of train.
Background technique
With the continuous expansion of city size, traffic increasingly congestion, track train, such as light rail, subway etc. have become mesh The main traffic mode in preceding many cities.Train can generate a large amount of braking electric energy during braking, with environmentally protective Theory the problem of constantly deepening, train braking electric energy is recycled and recycled it is very urgent.Related skill existing at present Art discloses, and battery is arranged among train and recycles to braking electric energy, and is train power supply.However generated when train braking It is very big to brake electric energy, if to be absorbed by on-vehicle battery, needs that a large amount of battery is installed ON TRAINS, not only sternly The weight for increasing train again, influences the energy consumption of train operation, and also will increase unnecessary cost.
Therefore, the relevant technologies needs improve.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention One purpose is to propose that the recycling and reuse of braking electric energy may be implemented in a kind of braking recovery system of train, the system.
It is another object of the present invention to propose a kind of train.Yet another object of the invention is that proposing a kind of train Braking recovery method.
In order to achieve the above objectives, the braking recovery system for a kind of train that one aspect of the present invention embodiment proposes, comprising: lead Draw net；Train, the train include: electric brake；Charging capacitor；Distributor, the distributor are connected with the electric brake, There is node between the distributor and the electric brake；Two-way DC/DC converter, the one of the two-way DC/DC converter End is connected with the charging capacitor, and the other end of the two-way DC/DC converter is connected with the node；First controller, institute It states the first controller to be connected with the distributor and the two-way DC/DC converter, first controller is used in the column Two-way DC/DC converter is controlled so that the charging capacitor is to the train braking according to the voltage of the Traction networks when vehicle is braked Electric energy is absorbed；Energy-accumulating power station, the energy-accumulating power station are connected with the Traction networks, and the energy-accumulating power station includes the second control Device, the second controller are used to carry out charge or discharge according to the voltage of the Traction networks.
The braking recovery system of the train proposed according to embodiments of the present invention, the first controller are prepared in train braking time control Electric appliance and two-way DC/DC converter feed back to Traction networks for electric energy is braked, and absorb first with charging capacitor to braking electric energy, When the voltage of Traction networks continues to increase, energy-accumulating power station is recycled to be absorbed.In addition, energy-accumulating power station can also be according to Traction networks Voltage discharge Traction networks, to avoid the brownout of Traction networks, maintain the normal work of Traction networks.In the present invention In embodiment, braking electric energy is first fed back into Traction networks when train is braked, at this time if the train on Traction networks compares It is more, then the braking electric energy of feedback can uniformly be arrived to other trains, therefore the voltage of Traction networks will not increase very much.If instead this When Traction networks on train it is less, or the train braked at this time is more, then the voltage of Traction networks will increase, of the invention real Apply in example, preferentially absorbed using vehicle-mounted charge capacitor, if after vehicle-mounted charge capacitive absorption Traction networks voltage after Height of continuing rising then reuses energy-accumulating power station and is absorbed.The embodiment of the present invention passes through the charging capacitor and energy-accumulating power station pair on train Braking electric energy is absorbed, to realize the recycling and reuse of braking electric energy, is reduced energy waste, is reduced Traction networks Load.Also, the embodiment of the present invention can be protected the components of system, be improved system with the voltage of effective monitoring Traction networks Safety.
According to one embodiment of present invention, first controller is used to be greater than first in the voltage of the Traction networks pre- If when threshold value, controlling the charging capacitor and absorbing the braking electric energy for charging capacitor charging.
According to one embodiment of present invention, the train further include: mechanical brake, for carrying out mechanical system to train It is dynamic.
According to one embodiment of present invention, first controller is used to be greater than second in the voltage of the Traction networks pre- If when threshold value, controlling the mechanical brake starting cooperation implementation electric brake and being braked to the train.
According to one embodiment of present invention, the second controller is used to be greater than third in the voltage of the Traction networks pre- If when threshold value, controlling the energy-accumulating power station and charging.
According to one embodiment of present invention, the second controller is used for pre- less than the 4th in the voltage of the Traction networks If when threshold value, controlling the energy-accumulating power station and discharging, wherein the 4th preset threshold is less than the third predetermined threshold value.
According to one embodiment of present invention, when the voltage of the Traction networks is less than five preset thresholds, described second Controller controls the energy-accumulating power station and discharges to the Traction networks, meanwhile, first controller controls the two-way DC/ DC converter enters discharge mode so that the charging capacitor of the train discharges to the Traction networks, wherein the described 5th Preset threshold is less than the 4th preset threshold.
According to one embodiment of present invention, the energy-accumulating power station can be multiple, and the multiple energy-accumulating power station is according to default Distance interval setting.
According to one embodiment of present invention, two energy-accumulating power stations, the energy-accumulating power station can be set in every 3-6 kilometers Power can be 0.5-2MW.
In order to achieve the above objectives, a kind of train that another aspect of the present invention embodiment proposes, comprising: electric brake；Charging Capacitor；Distributor, the distributor are connected with the electric brake, have section between the distributor and the electric brake Point；One end of two-way DC/DC converter, the two-way DC/DC converter is connected with the charging capacitor, the two-way DC/DC The other end of converter is connected with the node；First controller, first controller and the distributor and described two-way DC/DC converter is connected, and first controller is used to be controlled in the train braking according to the voltage of the Traction networks double To DC/DC converter so that the charging capacitor absorbs the train braking electric energy.
The train proposed according to embodiments of the present invention, when being braked, the first controller is prepared in train braking time control Electric appliance and two-way DC/DC converter feed back to Traction networks for electric energy is braked, and are absorbed using charging capacitor to braking electric energy.? In the embodiment of the present invention, braking electric energy is first fed back into Traction networks when train is braked, at this time if column on Traction networks Vehicle is relatively more, then the braking electric energy of feedback can uniformly be arrived to other trains, therefore the voltage of Traction networks will not increase very much.It is on the contrary If the train at this time on Traction networks is less, or the train braked at this time is more, then the voltage of Traction networks will increase, at this In inventive embodiments, preferentially absorbed using vehicle-mounted charge capacitor.The embodiment of the present invention passes through the charging capacitor pair on train Braking electric energy is absorbed, to realize the recycling and reuse of braking electric energy, is reduced energy waste, is reduced Traction networks Load.Also, the embodiment of the present invention can be protected the components of system, be improved system with the voltage of effective monitoring Traction networks Safety.
According to one embodiment of present invention, first controller is used to be greater than first in the voltage of the Traction networks pre- If when threshold value, controlling the charging capacitor and absorbing the braking electric energy for charging capacitor charging.
According to one embodiment of present invention, the train further include: mechanical brake, for carrying out mechanical system to train It is dynamic.
According to one embodiment of present invention, first controller is used to be greater than second in the voltage of the Traction networks pre- If when threshold value, controlling the mechanical brake starting cooperation implementation electric brake and being braked to the train.
According to one embodiment of present invention, the train can be straddle-type monorail train.
According to one embodiment of present invention, the train includes: bogie, and the bogie is suitable for straddle seat in track girder On；Car body, the car body are connected with the bogie and are travelled by bogie traction along the track girder.
According to one embodiment of present invention, the bogie includes: bogie frame, the bogie frame be suitable for across Seat is connected on the track girder and with the car body；Travelling wheel, the travelling wheel are pivotably mounted on the steering structure On frame and cooperation is on the upper surface of the track girder；Power device, the power device are mounted on the bogie frame And it is sequentially connected with the travelling wheel；Horizontal wheels, the horizontal wheels are pivotably mounted on the bogie frame and cooperate On the side surface of the track girder.
According to one embodiment of present invention, the bogie further include: traction device, the traction device are mounted on institute It states on bogie frame and is connected with the car body；Supported and suspended device, the supported and suspended device are mounted on the bogie It is connected on framework and with the car body.
In order to achieve the above objectives, a kind of braking recovery method for train that another aspect of the invention embodiment proposes, including Following steps: braking the train, and generates braking electric energy according to brake force, and the braking electric energy is fed back to and is led Draw net；Monitor the voltage of the Traction networks；Charging capacitor is controlled to the braking electricity of the train according to the voltage of the Traction networks It can be carried out absorption；Energy-accumulating power station, which is controlled, according to the voltage of the Traction networks carries out charge or discharge.
The braking recovery method of the train proposed according to embodiments of the present invention, first brakes train, and according to system Power generates braking electric energy, and braking electric energy is fed back to Traction networks, then monitors the voltage of Traction networks, and according to Traction networks Voltage control charging capacitor absorbs the braking electric energy of train, if the voltage of Traction networks continues to increase, recycles storage Energy power station is absorbed.It discharges further, it is also possible to control energy-accumulating power station according to the voltage of Traction networks Traction networks, to keep away The brownout for exempting from Traction networks maintains the normal work of Traction networks.In embodiments of the present invention, first will after being braked to train Braking electric energy feeds back to Traction networks, at this time if the train on Traction networks is relatively more, can uniformly arrive the braking electric energy of feedback Other trains, therefore the voltage of Traction networks will not increase very much.If instead the train at this time on Traction networks is less, or at this time The train of braking is more, then the voltage of Traction networks will increase, in embodiments of the present invention, preferentially using vehicle-mounted charge capacitor into Row absorbs, if the voltage of Traction networks continues to increase after vehicle-mounted charge capacitive absorption, reuses energy-accumulating power station and is inhaled It receives.The embodiment of the present invention absorbs braking electric energy by charging capacitor on train and energy-accumulating power station, to realize system The recycling and reuse of electrokinetic energy, reduce energy waste, reduce the load of Traction networks.Also, the embodiment of the present invention can be with The voltage of effective monitoring Traction networks protects the components of system, improves the safety of system.
According to one embodiment of present invention, the braking recovery method of the train further include: when the electricity of the Traction networks When pressure is greater than the first preset threshold, controls the charging capacitor and absorb the braking electric energy for charging capacitor charging.
According to one embodiment of present invention, the braking recovery method of the train further include: when the electricity of the Traction networks When pressure is greater than the second preset threshold, mechanical braking cooperation implementation electric braking is carried out to train, the train is braked, wherein Second preset threshold is greater than the first preset threshold.
According to one embodiment of present invention, the braking recovery method of the train further include: when the electricity of the Traction networks When pressure is greater than third predetermined threshold value, controls the energy-accumulating power station and charge.
According to one embodiment of present invention, the braking recovery method of the train further include: when the electricity of the Traction networks It when pressure is less than four preset thresholds, controls the energy-accumulating power station and discharges, wherein the 4th preset threshold is less than described the Three preset thresholds.
According to one embodiment of present invention, when the voltage of the Traction networks is less than five preset thresholds, described in control Energy-accumulating power station discharges to the Traction networks, meanwhile, it controls the charging capacitor and discharges to the Traction networks, wherein 5th preset threshold is less than the 4th preset threshold.
Detailed description of the invention
Fig. 1 is the block diagram according to the braking recovery device of the train of the embodiment of the present invention；
Fig. 2 is the circuit diagram according to the braking recovery device of the train of one embodiment of the invention；
Fig. 3 is the circuit diagram according to the braking recovery device of the train of a specific embodiment of the invention, wherein is led The voltage for drawing net is greater than the first preset threshold；
Fig. 4 is the circuit diagram according to the braking recovery device of the train of another specific embodiment of the invention, wherein The voltage of Traction networks is greater than the 4th preset threshold；
Fig. 5 is the block diagram according to the braking recovery system of the train of a specific embodiment of the invention；
Fig. 6 is the block diagram according to the train of the embodiment of the present invention；
Fig. 7 is the block diagram according to the train of a specific embodiment of the invention；
Fig. 8 is the structural schematic diagram according to the train of a specific embodiment of the invention；
Fig. 9 is the flow chart according to the braking recovery method of the train of the embodiment of the present invention；
Figure 10 is the flow chart according to the braking recovery method of the train of a specific embodiment of the invention；And
Figure 11 is the flow chart according to the braking recovery method of the train of another specific embodiment of the invention.
Appended drawing reference:
Traction networks 1, train 2 and energy-accumulating power station 3；
Electric brake 201, charging capacitor 202, distributor 203, two-way DC/DC converter 204 and the first controller 205；
Mechanical brake 206；Second controller 301；
Bogie 20 and car body 30；
Bogie frame 21, travelling wheel 22, power device 23 and horizontal wheels 24；
Traction device 25 and supported and suspended device 26.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings come describe proposition of the embodiment of the present invention train braking recovery system and method and train.
As shown in Figure 1, for according to the block diagram of the braking recovery system of the train of the embodiment of the present invention.Such as Fig. 1 institute Show, the braking recovery system of the train includes: Traction networks 1, multiple trains 2 for being connected on Traction networks 1, and setting is being drawn Multiple energy-accumulating power stations 3 on net 1.Wherein, Traction networks 1 provide direct current to multiple trains 2, and train 2 is by electricity getting device from leading Draw and takes electricity among net.In one embodiment of the invention, train 2 is straddle-type monorail train.In an embodiment of the present invention It can be recycled by the braking electric energy that the charging capacitor and/or energy-accumulating power station 3 of train 2 generate train 2.For train 2 For, the braking electric energy of itself generation not only can be absorbed, the braking electric energy of other trains 2 generation also can be absorbed.Due to column When to 1 regenerative braking electric energy of Traction networks, the voltage of Traction networks 1 can increase vehicle 2, therefore train 2 and energy-accumulating power station 3 can be to leading The voltage for drawing net 1 is monitored.When the voltage of Traction networks 1 increases, the charging capacitor and/or energy-accumulating power station 3 of train 2 can be passed through It is absorbed, so that the voltage for preventing Traction networks 1 is more than maximum rated voltage, and is broken down.Specific absorption process, will be It describes in detail in embodiment below.In an embodiment of the present invention, energy-accumulating power station 3 can be set among AT STATION, will The braking electric energy of absorption is powered for station, and for example, the air-conditioning at station, multimedia, light etc. are powered.In the present invention Embodiment in, energy-accumulating power station 3 according to pre-determined distance interval be arranged, such as every 3-6 kilometer in setting two energy-accumulating power stations 3, often The power of a energy-accumulating power station 3 is 0.5-2MW.Certain those skilled in the art can select to close according to the specific operating environment of train 2 The quantity and power of suitable energy-accumulating power station 3.
As shown in Fig. 2, for according to the block diagram of the braking recovery system of the train of one embodiment of the invention.In order to Convenient for description, an energy-accumulating power station is illustrated only in this embodiment.As shown in Fig. 2, train 2 includes: electric brake 201, fills Capacitor 202, distributor 203, two-way DC/DC converter 204 and the first controller 205.
Wherein, distributor 203 is connected with Traction networks 1 and electric brake 201, has between distributor 203 and electric brake 201 There is node；One end of two-way DC/DC converter 204 is connected with charging capacitor 202, the other end of two-way DC/DC converter 204 with Node between distributor 203 and electric brake 201 is connected；First controller 205 is converted with distributor 203 and two-way DC/DC Device 204 is connected, and the first controller 205 is used to control two-way DC/DC converter according to the voltage U of Traction networks 1 when train 2 is braked 204 open, and control two-way DC/DC converter 204 into charge mode so that charging capacitor 202 to train 2 brake electric energy into Row absorbs.In an embodiment of the present invention, energy-accumulating power station 3, energy-accumulating power station 3 are connected with Traction networks 1, and energy-accumulating power station 3 includes second Controller 301, second controller 301 are used to carry out charge or discharge according to the voltage U of Traction networks 1.In the embodiment of the present invention In, as shown in Fig. 2, energy-accumulating power station 3 may include multiple 160KW-80KWh modules, the positive phase of multiple 160KW-80KWh modules Even, and by positive cabinet it is connected with the anode of Traction networks 1, the cathode of multiple 160KW-80KWh modules is connected, and passes through cathode cabinet It is connected with the cathode of Traction networks 1.
Specifically, when train 2 is braked, traction electric machine is changed into generator operating condition, electricity system from motor working condition Dynamic device 201 generates braking electric energy and braking electric energy is fed back to Traction networks.When train negligible amounts, that is, Traction networks on Traction networks 1 Load on 1 is smaller or Traction networks 1 on the train braked it is more when, feedback to the braking electric energy on Traction networks 1 can be more than to lead Electric energy needed for drawing the train operation on net 1, so as to cause the raising of the voltage U of Traction networks.At this point, the first controller 205 is real When monitor the voltage U of Traction networks 1, it is preferential that train 2 is controlled by the first controller 205 when the voltage U of Traction networks 1 is increased Two-way DC/DC converter 204 is opened, and controls two-way DC/DC converter 204 into charge mode, so that charging capacitor 202 is inhaled Receive braking electric energy.Meanwhile the second controller 301 of energy-accumulating power station 3 monitors the voltage U of Traction networks, if in the charging electricity of train 2 After appearance 202 is absorbed, the voltage U of Traction networks 1 continues to increase, then second controller 301 controls energy-accumulating power station 3 from Traction networks 1 absorption electric energy charges.Similarly, it when the train quantity on Traction networks 1 is more, i.e., when the load on Traction networks 1 is larger, leads The voltage U for drawing net 1 can be reduced, and the voltage U of the 301 real-time monitoring Traction networks 1 of second controller of energy-accumulating power station 3, works as traction at this time When the voltage U of net 1 is reduced, energy-accumulating power station 3 is preferentially controlled by second controller 301 and is discharged to improve the electricity of Traction networks 1 Pressure.If the voltage U of Traction networks 1 continues to reduce, the first controller 205 also can control charging capacitor 202 to discharge to mention The voltage of high Traction networks 1.
In an embodiment of the present invention, itself charging and discharging of charging capacitor 205 is rapid, and train 2 can be absorbed and brake moment The biggish braking electric energy generated.
It should be noted that energy-accumulating power station 3 may be provided among station, the braking electric energy of recycling is used for as station Illumination, air-conditioning, multimedia etc. are powered.In this way, braking electric energy can be carried out by charging capacitor 202 and energy-accumulating power station 3 It recycles, while the load of substation can be reduced, saved the energy.
It should also be noted that, charging capacitor 202 is arranged on train 2, the braking electricity of train generation can be quickly absorbed Can, farther out due to the distance between energy-accumulating power station 3 and train 2, energy-accumulating power station 3 is caused to absorb braking electric energy lag.Therefore, at this Charging capacitor 202 is preferentially selected to absorb braking electric energy in the embodiment of invention, to realize the quick absorption of braking electric energy, thus anti- The braking electric energy for not only being absorbed or consuming causes the voltage U of Traction networks to increase, and protects the components of system, avoids drawing Electric appliance damage on net 1, improves the safety of system.
Another specific embodiment according to the present invention, if there was only rows of operations of vehicle 2 on Traction networks 1 is Traction networks 1 It is upper to absorb braking electric energy without other trains, and the braking electric energy that the braking of train 2 generates is larger, then brakes electric energy mainly by energy storage Power station 3 absorbs, such as the control charging capacitor 202 of the first controller 205 first absorbs small part and brakes electric energy, such as 30% system Electrokinetic energy, then second controller 301 controls 70% that energy-accumulating power station 3 absorbs braking electric energy, to complete the recycling of braking electric energy.
According to one embodiment of present invention, energy-accumulating power station 3 can be to be multiple, and multiple energy-accumulating power stations 3 are according between pre-determined distance Every setting.In an embodiment of the present invention, energy-accumulating power station 3 can be set among AT STATION, using the braking electric energy that will be absorbed as vehicle Station is powered, and for example, the air-conditioning at station, multimedia, light etc. are powered.
According to one embodiment of present invention, two energy-accumulating power stations 3, the power of energy-accumulating power station 3 can be set in every 3-6 kilometers It can be 0.5-2MW.Wherein, those skilled in the art can select suitable energy-accumulating power station 3 according to the specific operating environment of train 2 Quantity and power.
The embodiment of the present invention is realized by charging capacitor and energy-accumulating power station absorption braking electric energy on control train as a result, The recycling and reuse of braking electric energy, reduce energy waste, reduce the load of Traction networks.Also, the embodiment of the present invention is also System parts can be protected with the voltage of effective monitoring Traction networks, improve security of system.
The concrete operating principle of the braking recovery system of the train of the embodiment of the present invention is analyzed below with reference to Fig. 3 and 4.
According to one embodiment of present invention, as shown in figure 3, being fed when train 2 starts braking to Traction networks 1, wherein First controller 205 is used to be greater than the first preset threshold U1 in the voltage U of Traction networks 1, such as when 845V, controls charging capacitor 202 absorb braking electric energy for the charging of charging capacitor 202.At this point, the direction that the electric energy in circuit is indicated according to arrow shown in Fig. 3 Flowing, wherein the braking electric energy that train 2 generates feeds back to Traction networks 1, and the charging capacitor 202 of train 2 absorbs braking electricity Energy.In an embodiment of the present invention, the braking electric energy of train 2 first feeds back to Traction networks, and the voltage U that will lead to Traction networks 1 is increased, The voltage U of real-time detection Traction networks 1, when the voltage U of Traction networks 1 is greater than the first preset threshold U1, the control of the first controller 205 Two-way DC/DC converter 204 is opened, and controls two-way DC/DC converter 204 into charge mode, so that charging capacitor 202 is inhaled Receive braking electric energy.In an embodiment of the present invention, enter charging mould when the first controller 205 controls two-way DC/DC converter 204 When formula, on high-tension side DC power conversion is the direct current with the voltage matches of charging capacitor 202 by two-way DC/DC converter 204, The absorption braking electric energy of charging capacitor 202 is controlled to be charged to charging capacitor 202.
According to one embodiment of present invention, after charging capacitor 202 absorbs braking electric energy, the voltage U meeting of Traction networks 1 Decline, the first controller 205 are used for the voltage U in Traction networks 1 less than the 7th preset threshold U7, such as when 830V, control two-way DC/DC converter 204 is closed, so that charging capacitor 202 stops absorbing braking electric energy.At this point, the braking electric energy that train 2 generates is logical It crosses distributor 203 and feeds back to Traction networks 1, and the charging capacitor 205 of train 2 and energy-accumulating power station 3 do not absorb braking electric energy.
Specifically, when train 2 is braked, braking electric energy feeds back to Traction networks 1, and the voltage U of Traction networks 1 is increased, The voltage U of real-time detection Traction networks illustrates anti-at this time if the voltage U of Traction networks is greater than the first preset threshold U1, such as 845V The braking electric energy being fed on Traction networks 1 is superfluous, then the first controller 205 controls the two-way work of DC/DC converter 204 in charging mould Formula is to absorb braking electric energy by charging capacitor 202.At this point, the braking electric energy that train 2 generates is fed back to by distributor 203 and is led Draw net 1, while being charged by two-way DC/DC converter 204 to charging capacitor 202, that is, passes through 202 absorption portion of charging capacitor Divide braking electric energy.Later if the voltage U of Traction networks is less than the 7th preset threshold U7, such as 830V, illustrate that feedback is to leading at this time The load requirement drawn on braking electric energy and Traction networks 1 on net 1 has basically reached balance, then the first controller 205 controls two-way DC/DC converter 204 is closed.At this point, charging capacitor 202 stops absorbing braking electric energy, the braking electric energy that train 2 generates is by matching Electric appliance 203 feeds back to Traction networks 1.
The embodiment of the present invention preferentially selects the charging capacitor 202 of train 2 to absorb braking electric energy, to realize the fast of braking electric energy Speed absorbs, thus, it prevents the braking electric energy not consumed from the voltage U of Traction networks being caused to increase, the device on Traction networks 1 is avoided to damage It is bad.
According to one embodiment of present invention, second controller 301 is used for default greater than third in the voltage U of Traction networks 1 Threshold value U3, such as when 855V, control energy-accumulating power station 3 charges.In an embodiment of the present invention, when the charging capacitor of train 2 202 start absorb braking electric energy when, at this time since the train on Traction networks 1 is less, or the train 2 braked at this time is more, because The voltage of this Traction networks 1 can also continue to increase.When the voltage U of Traction networks 1 is greater than third predetermined threshold value U3, second controller 301 control energy-accumulating power stations 3 absorb braking electric energy and charge, to mitigate the pressure that charging capacitor 202 absorbs braking electric energy, thus Avoiding the voltage U of Traction networks 1 is more than maximum rated voltage.
According to one embodiment of present invention, as shown in figure 4, when the voltage U of Traction networks 1 is less than the 4th preset threshold U4, Such as when 810V, second controller 301 controls energy-accumulating power station 3 and discharges, wherein the 4th preset threshold U4 is default less than third Threshold value U3.In an embodiment of the present invention, if the more voltage that will lead to Traction networks of train on Traction networks 1 declines, this When in order to avoid Traction networks voltage be lower than minimum rated voltage, need to control energy-accumulating power station 3 and discharge to Traction networks 1.? In a specific embodiment of the invention, there are multiple energy-accumulating power stations 3, the preferential energy-accumulating power stations 3 for selecting electricity high on Traction networks 1 It discharges to Traction networks, such as the power that the high energy-accumulating power station 3 of electricity discharges is big, the power that the low energy-accumulating power station 3 of electricity discharges omits It is small, to reach the electric quantity balancing between energy-accumulating power station 3.
According to one embodiment of present invention, when the voltage U of Traction networks 1 is less than the 5th preset threshold U5, the second control Device 301 controls energy-accumulating power station 3 and discharges to Traction networks 1, meanwhile, the first controller 205 controls two-way DC/DC converter 204 It opens, and controls two-way DC/DC converter 204 into discharge mode, so that the charging capacitor 202 of train 2 is carried out to Traction networks 1 Electric discharge, wherein the 5th preset threshold U5 is less than the 4th preset threshold U4.In the present embodiment, if the voltage U of Traction networks 1 too Small, then the charging capacitor for controlling energy-accumulating power station 3 and train 2 discharges, so that the voltage of Traction networks 1 quickly be improved.
According to one embodiment of present invention, after energy-accumulating power station 3 discharges to Traction networks 1, the voltage U liter of Traction networks 1 Height, when the voltage U of Traction networks is greater than the 6th preset threshold U6, second controller 301 controls energy-accumulating power station 3 and stops electric discharge, In, the 6th preset threshold U6 is greater than the 4th preset threshold U4.
According to one embodiment of present invention, as shown in figure 5, train 2 further include: mechanical brake 206, for train 2 carry out mechanical braking.
According to one embodiment of present invention, when the voltage U of Traction networks 1 is greater than the second preset threshold U2, the first control Device 205 controls the starting cooperation implementation electric brake 201 of mechanical brake 206 and brakes to train 2, wherein the second default threshold Value U2 is greater than the first preset threshold U1.In an embodiment of the present invention, it if the train on Traction networks 1 is less, or makes at this time Dynamic train is more, then after charging capacitor 205 and energy-accumulating power station 3 absorb braking electric energy, the voltage U of Traction networks 1 be will continue to Increase, when the voltage of Traction networks 1 is greater than the second preset threshold U2, the first controller 205 controls mechanical brake 206 and starts, To carry out auxiliary braking to train 2.
Specifically, after charging capacitor 205 and energy-accumulating power station 3 absorb braking electric energy, the voltage U of Traction networks 1 can be after It is continuous to increase, the voltage U of 205 real-time monitoring Traction networks of the first controller, if the voltage U of Traction networks is greater than the second preset threshold U2, then the first controller 205 control mechanical brake 206 starts, in this way, passing through machine while carrying out electric braking to train 2 Tool braking carries out auxiliary braking to train 2, to reduce the braking electric energy of the generation of train 2, to avoid the voltage U of Traction networks from being more than Maximum rated voltage, and precisely quickly parking may be implemented.
It should be noted that can equally be controlled when the travel speed of train 2 is lower than 5Km/h or needs inlet parking Mechanical brake 206 processed is opened to brake to train 2.
To sum up, the braking recovery system of the train proposed according to embodiments of the present invention, the first controller is in train braking Control distributor and two-way DC/DC converter by brake electric energy feed back to Traction networks, first with charging capacitor to braking electric energy into Row absorbs, and when the voltage of Traction networks continues to increase, energy-accumulating power station is recycled to be absorbed.In addition, energy-accumulating power station can be with root It discharges according to the voltage of Traction networks Traction networks, to avoid the brownout of Traction networks, maintains the normal work of Traction networks. In embodiments of the present invention, braking electric energy is first fed back into Traction networks when train is braked, at this time if on Traction networks Train is relatively more, then the braking electric energy of feedback can uniformly be arrived to other trains, therefore the voltage of Traction networks will not increase very much.Instead If Traction networks at this time on train it is less, or the train braked at this time is more, then the voltage of Traction networks will increase, In the embodiment of the present invention, preferentially absorbed using vehicle-mounted charge capacitor, if the Traction networks after vehicle-mounted charge capacitive absorption Voltage continue to increase, then reuse energy-accumulating power station and absorbed.The embodiment of the present invention passes through charging capacitor on train and storage Energy power station absorbs braking electric energy, to realize the recycling and reuse of braking electric energy, reduces energy waste, reduces The load of Traction networks.Also, the embodiment of the present invention can be protected the components of system, be mentioned with the voltage of effective monitoring Traction networks The high safety of system.
As shown in fig. 6, for according to the block diagram of the train of the embodiment of the present invention.As shown in fig. 6, the train 2 includes: Electric brake 201, charging capacitor 202, distributor 203, two-way DC/DC converter 204 and the first controller 205.
Wherein, distributor 203 is connected with Traction networks 1 and electric brake 201, has between distributor 203 and electric brake 201 There is node；One end of two-way DC/DC converter 204 is connected with charging capacitor 202, the other end of two-way DC/DC converter 204 with Node between distributor 203 and electric brake 201 is connected；First controller 205 is converted with distributor 203 and two-way DC/DC Device 204 is connected, and the first controller 205 is used to control two-way DC/DC converter according to the voltage U of Traction networks 1 when train 2 is braked 204 open, and control two-way DC/DC converter 204 into charge mode so that charging capacitor 202 to train 2 brake electric energy into Row absorbs.
Specifically, when train 2 is braked, traction electric machine is changed into generator operating condition, electricity system from motor working condition Dynamic device 201 generates braking electric energy and braking electric energy is fed back to Traction networks.When train negligible amounts, that is, Traction networks on Traction networks 1 Load on 1 is smaller or Traction networks 1 on the train braked it is more when, feedback to the braking electric energy on Traction networks 1 can be more than to lead Electric energy needed for drawing the train operation on net 1, so as to cause the raising of the voltage U of Traction networks.At this point, the first controller 205 is real When monitor the voltage U of Traction networks 1, it is preferential that train 2 is controlled by the first controller 205 when the voltage U of Traction networks 1 is increased Two-way DC/DC converter 204 is opened, and controls two-way DC/DC converter 204 into charge mode, so that charging capacitor 202 is inhaled Receive braking electric energy.
In an embodiment of the present invention, itself charging and discharging of charging capacitor 205 is rapid, and train 2 can be absorbed and brake moment The biggish braking electric energy generated.Therefore, preferentially selection charging capacitor 202 absorbs braking electric energy in an embodiment of the present invention, To realize the quick absorption of braking electric energy, to prevent the braking electric energy for not being absorbed or consuming from causing the voltage U of Traction networks It increases, protects the components of system, avoid the electric appliance on Traction networks 1 from damaging, improve the safety of system.
According to one embodiment of present invention, it is fed when train 2 starts braking to Traction networks 1, wherein the first controller The voltage U of 205 monitoring Traction networks 1, and it is greater than the first preset threshold U1 in the voltage U of Traction networks 1, such as when 845V, control is filled Capacitor 202 absorbs braking electric energy for the charging of charging capacitor 202.At this point, the electric energy in circuit is indicated according to arrow shown in Fig. 3 Direction flowing, wherein the braking electric energy that train 2 generates feeds back to Traction networks 1, and the charging capacitor 202 of train 2 absorbs system Electrokinetic energy.In an embodiment of the present invention, the braking electric energy of train 2 first feeds back to Traction networks, will lead to the voltage U of Traction networks 1 It increases, the voltage U of real-time detection Traction networks 1, when the voltage U of Traction networks 1 is greater than the first preset threshold U1, the first controller The 205 two-way DC/DC converters 204 of control are opened, and control two-way DC/DC converter 204 into charge mode, so that charging electricity Hold 202 and absorbs braking electric energy.In an embodiment of the present invention, when the first controller 205 control two-way DC/DC converter 204 into When entering charge mode, on high-tension side DC power conversion is the voltage matches with charging capacitor 202 by two-way DC/DC converter 204 Direct current, with to charging capacitor 202 charged i.e. control charging capacitor 202 absorb braking electric energy.
According to one embodiment of present invention, after charging capacitor 202 absorbs braking electric energy, the voltage U meeting of Traction networks 1 Decline, the first controller 205 monitor the voltage U of Traction networks 1, and in the voltage U of Traction networks 1 less than the 5th preset threshold U5, example It when such as 830V, controls two-way DC/DC converter 204 and closes, so that charging capacitor 202 stops absorbing braking electric energy.At this point, train The 2 braking electric energy generated feed back to Traction networks 1 by distributor 203, and the charging capacitor 205 of train 2 and energy-accumulating power station 3 are not Absorb braking electric energy.
Specifically, when train 2 is braked, braking electric energy feeds back to Traction networks 1, and the voltage U of Traction networks 1 is increased, The voltage U of real-time detection Traction networks illustrates anti-at this time if the voltage U of Traction networks is greater than the first preset threshold U1, such as 845V The braking electric energy being fed on Traction networks 1 is superfluous, then the first controller 205 controls the two-way work of DC/DC converter 204 in charging mould Formula is to absorb braking electric energy by charging capacitor 202.At this point, the braking electric energy that train 2 generates is fed back to by distributor 203 and is led Draw net 1, while being charged by two-way DC/DC converter 204 to charging capacitor 202, that is, passes through 202 absorption portion of charging capacitor Divide braking electric energy.Later if the voltage U of Traction networks is less than the 5th preset threshold U5, such as 830V, illustrate that feedback is to leading at this time The load requirement drawn on braking electric energy and Traction networks 1 on net 1 has basically reached balance, then the first controller 205 controls two-way DC/DC converter 204 is closed.At this point, charging capacitor 202 stops absorbing braking electric energy, the braking electric energy that train 2 generates is by matching Electric appliance 203 feeds back to Traction networks 1.
The embodiment of the present invention preferentially selects the charging capacitor 202 of train 2 to absorb braking electric energy, to realize the fast of braking electric energy Speed absorbs, thus, it prevents the braking electric energy not consumed from the voltage U of Traction networks being caused to increase, the device on Traction networks 1 is avoided to damage It is bad.
According to one embodiment of present invention, as shown in fig. 7, train 2 further include: mechanical brake 206, for train 2 carry out mechanical braking.
According to one embodiment of present invention, when the voltage U of Traction networks 1 is greater than the second preset threshold U2, the first control Device 205 controls the starting cooperation implementation electric brake 201 of mechanical brake 206 and brakes to train 2, wherein the second default threshold Value U2 is greater than the first preset threshold U1.In an embodiment of the present invention, it if the train on Traction networks 1 is less, or makes at this time Dynamic train is more, then after charging capacitor 205 and energy-accumulating power station 3 absorb braking electric energy, the voltage U of Traction networks 1 be will continue to Increase, when the voltage of Traction networks 1 is greater than the second preset threshold U2, the first controller 205 controls mechanical brake 206 and starts, To carry out auxiliary braking to train 2.
Specifically, after charging capacitor 205 and energy-accumulating power station 3 absorb braking electric energy, the voltage U of Traction networks 1 can be after It is continuous to increase, the voltage U of 205 real-time monitoring Traction networks of the first controller, if the voltage U of Traction networks is greater than the second preset threshold U2, then the first controller 205 control mechanical brake 206 starts, in this way, passing through machine while carrying out electric braking to train 2 Tool braking carries out auxiliary braking to train 2, to reduce the braking electric energy of the generation of train 2, to avoid the voltage U of Traction networks from being more than Maximum rated voltage, and precisely quickly parking may be implemented.
It should be noted that can equally be controlled when the travel speed of train 2 is lower than 5Km/h or needs inlet parking Mechanical brake 206 processed is opened to brake to train 2.
A specific embodiment according to the present invention, train 2 can be straddle-type monorail train.
According to one embodiment of present invention, as shown in figure 8, train 2 further include: bogie 20 and car body 30, wherein turn It is suitable for straddle seat on track girder to frame 20；Car body 30 is connected with bogie 20 and is travelled by the traction of bogie 20 along track girder.
According to one embodiment of present invention, as shown in figure 8, bogie 20 include: bogie frame 21, travelling wheel 22, Power device 23 and horizontal wheels 24, wherein bogie frame 21 is suitable for straddle seat and is connected on track girder and with car body 30；Travelling wheel 22 are pivotably mounted on bogie frame 21 and cooperate on the upper surface of track girder；Power device 23 is mounted on bogie It is sequentially connected on framework 21 and with travelling wheel 22；Horizontal wheels 24 are pivotably mounted on bogie frame 21 and cooperate in track On the side surface of beam.
According to one embodiment of present invention, as shown in figure 8, bogie 20 further include: traction device 25 and supported and suspended Device 26, wherein traction device 25 is mounted on bogie frame 21 and is connected with car body 30；Supported and suspended device 26 is mounted on It is connected on bogie frame 21 and with car body 30.
To sum up, the train proposed according to embodiments of the present invention, when being braked, the first controller is in train braking time control It prepares electric appliance and two-way DC/DC converter and feeds back to Traction networks for electric energy is braked, braking electric energy is inhaled using charging capacitor It receives.In embodiments of the present invention, braking electric energy is first fed back into Traction networks when train is braked, at this time if on Traction networks Train it is relatively more, then the braking electric energy of feedback can uniformly be arrived to other trains, therefore the voltage of Traction networks will not increase very much. If instead the train at this time on Traction networks is less, or the train braked at this time is more, then the voltage of Traction networks will increase, In embodiments of the present invention, it is preferentially absorbed using vehicle-mounted charge capacitor.The embodiment of the present invention passes through the charging electricity on train Hold and braking electric energy is absorbed, to realize the recycling and reuse of braking electric energy, reduces energy waste, reduce traction The load of net.Also, the embodiment of the present invention can be protected the components of system, be improved with the voltage of effective monitoring Traction networks The safety of system.
As shown in Figure 9, for according to the flow chart of the braking recovery method of the train of the embodiment of the present invention.As shown in Figure 9, should Method the following steps are included:
S10: braking train, and generates braking electric energy according to brake force, and braking electric energy is fed back to Traction networks.
S20: the voltage U of Traction networks is monitored.
S30: charging capacitor is controlled according to the voltage U of Traction networks, the braking electric energy of train is absorbed.
S40: energy-accumulating power station is controlled according to the voltage U of Traction networks and carries out charge or discharge.
Specifically, when braking to train, braking electric energy is generated according to brake force, and braking electric energy is fed back to Traction networks.When the load on train negligible amounts, that is, Traction networks on Traction networks is smaller or Traction networks on the train braked compared with When more, feeding back can be more than electric energy needed for the train operation on Traction networks, so as to cause traction to the braking electric energy on Traction networks The voltage U of net is increased, the voltage U of real-time monitoring Traction networks, when the voltage U of Traction networks is increased, controls the charging of train first Capacitive absorption brakes electric energy.Meanwhile continuing to monitor the voltage of Traction networks, if the charging capacitor in control train carries out absorbing it The voltage U of rear haulage net continues to increase, then controls energy-accumulating power station absorption braking electric energy and charge.Similarly, when on Traction networks Train quantity it is more, i.e., when the load on Traction networks is larger, the voltage U of Traction networks can be reduced, the electricity of real-time monitoring Traction networks U is pressed, when the voltage U of Traction networks is reduced, control energy-accumulating power station first discharges to improve the voltage of Traction networks, if traction The voltage U of net continues to reduce, then controls charging capacitor and discharge to improve the voltage of Traction networks.
In an embodiment of the present invention, charging capacitor itself charging and discharging is rapid, and the generation of train braking moment can be absorbed Biggish braking electric energy.
It should be noted that energy-accumulating power station may be provided among station, the braking electric energy of recycling is used for as station Illumination, air-conditioning, multimedia etc. are powered.In this way, braking electric energy can be recycled by charging capacitor and energy-accumulating power station And recycling, while the load of substation can be reduced, save the energy.
It should also be noted that, charging capacitor setting is ON TRAINS, the braking electric energy of train generation can be quickly absorbed, by Farther out in the distance between energy-accumulating power station and train, energy-accumulating power station is caused to absorb braking electric energy lag.Therefore, in reality of the invention It applies and charging capacitor is preferentially selected to absorb braking electric energy in example, to realize the quick absorption of braking electric energy, to prevent from not being absorbed Or the braking electric energy of consumption causes the voltage U of Traction networks to increase, and protects the components of system, avoids the electric appliance on Traction networks Damage, improves the safety of system.
According to one embodiment of present invention, the braking recovery method of train further include: when the voltage U of Traction networks is greater than the One preset threshold U1, such as when 845V, the charging capacitor for controlling train absorbs braking electric energy.In an embodiment of the present invention, it arranges The braking electric energy of vehicle first feeds back to Traction networks, and the voltage U that will lead to Traction networks is increased, the voltage U of real-time detection Traction networks, when leading When drawing the voltage U of net greater than the first preset threshold U1, the two-way DC/DC converter for controlling train is opened, and controls two-way DC/DC Converter enters charge mode, so that charging capacitor absorbs braking electric energy.In an embodiment of the present invention, as the two-way DC/ of control When DC converter enters charge mode, on high-tension side DC power conversion is the voltage with charging capacitor by two-way DC/DC converter Matched direct current controls charging capacitor absorption braking electric energy to be charged to charging capacitor.
According to one embodiment of present invention, after charging capacitor absorbs braking electric energy, the voltage U of Traction networks can under Drop, when the voltage U of Traction networks is less than the 7th preset threshold U7, such as when 830V, the two-way DC/DC converter for controlling train is closed It closes, so that charging capacitor stops absorbing braking electric energy.At this point, the braking electric energy that train generates feeds back to Traction networks, and train Charging capacitor and energy-accumulating power station do not absorb braking electric energy.
According to one embodiment of present invention, the braking recovery method of train further include: when the voltage U of Traction networks is greater than the Three preset threshold U3, such as when 855V, control energy-accumulating power station charges.In an embodiment of the present invention, when the charging of train When capacitor starts to absorb braking electric energy, at this time since the train on Traction networks is less, or the train braked at this time is more, therefore The voltage of Traction networks can also continue to increase.When the voltage U of Traction networks is greater than third predetermined threshold value U3, control energy-accumulating power station absorbs Braking electric energy charges, so that avoiding the voltage U of Traction networks is more than maximum rated voltage.
According to one embodiment of present invention, the braking recovery method of train further include: when the voltage U of Traction networks is less than Four preset threshold U4, such as when 810V, control energy-accumulating power station discharges, wherein the 4th preset threshold U4 is default less than third Threshold value U3.In an embodiment of the present invention, if the more voltage that will lead to Traction networks of train on Traction networks declines, at this time In order to avoid the voltage of Traction networks is lower than minimum rated voltage, needs to control energy-accumulating power station and discharge to Traction networks.In this hair In a bright specific embodiment, there are multiple energy-accumulating power stations on Traction networks, the preferential energy-accumulating power station for selecting electricity high is to traction Net electric discharge, such as electricity it is high energy-accumulating power station electric discharge power it is big, electricity it is low energy-accumulating power station electric discharge power it is smaller, to reach To the electric quantity balancing between energy-accumulating power station.
According to one embodiment of present invention, the braking recovery method of train further include: judge Traction networks voltage U whether Less than the 5th preset threshold U5；If the voltage U of Traction networks controls energy-accumulating power station to Traction networks less than the 5th preset threshold U5 It discharges, meanwhile, control charging capacitor discharges to Traction networks, wherein the 5th preset threshold U5 is less than the 4th default threshold Value U4.In the present embodiment, if the voltage U of Traction networks is too small, the charging capacitor for controlling energy-accumulating power station and train is carried out Electric discharge, so that the voltage of Traction networks quickly be improved.
According to one embodiment of present invention, the braking recovery method of train further include: judge Traction networks voltage U whether Greater than the 6th preset threshold U6；If the voltage U of Traction networks is greater than the 6th preset threshold U6, controls energy-accumulating power station stopping and put Electricity, wherein the 6th preset threshold U6 is greater than the 4th preset threshold U4.
According to one embodiment of present invention, the braking recovery method of train further include: when the voltage U of Traction networks is greater than the When two preset threshold U2, mechanical braking cooperation implementation electric braking is carried out to train, train is braked, wherein the second default threshold Value U2 is greater than the first preset threshold U1.In an embodiment of the present invention, it if the train on Traction networks is less, or brakes at this time Train it is more, then after charging capacitor and energy-accumulating power station absorb braking electric energy, the voltage U of Traction networks will continue to increase, when When the voltage of Traction networks is greater than the second preset threshold U2, control train carries out mechanical braking, to carry out auxiliary braking to train.
Specifically, after charging capacitor and energy-accumulating power station absorb braking electric energy, the voltage U of Traction networks will continue to increase Add, the voltage U of real-time monitoring Traction networks, if the voltage U of Traction networks is greater than the second preset threshold U2, controls train and carry out machine Tool braking, in this way, auxiliary braking is carried out to train by mechanical braking while carrying out electric braking to train, to reduce train The braking electric energy of generation so that avoiding the voltage U of Traction networks is more than maximum rated voltage, and may be implemented precisely quickly to stop Vehicle.
As described above, as shown in FIG. 10 and 11, the specific step of the recycling and reuse of the braking electric energy of the embodiment of the present invention It is rapid as follows:
One) recycling of electric energy is braked
S101: braking train, and generates braking electric energy according to brake force, and braking electric energy is fed back to traction Net.
S102: the voltage U of real-time monitoring Traction networks.
S103: judge whether the voltage U of Traction networks is greater than the first preset threshold U1 such as 845V.
If so, thening follow the steps S105；If it is not, then repeating step S103.
S104: control charging capacitor absorbs braking electric energy.
S105: judge whether the voltage U of Traction networks is greater than third predetermined threshold value U3.
If so, thening follow the steps S106；If it is not, then repeating step S105.
S106: control energy-accumulating power station absorbs braking electric energy.
Two) recycling of electric energy is braked
S201: the voltage U of Traction networks is monitored.
S202: judge the voltage U of Traction networks whether less than the 4th preset threshold U4 such as 810V.
If so, thening follow the steps S203；If it is not, then repeating step S202.
S203: control energy-accumulating power station discharges.
S204: judge the voltage U of Traction networks whether less than the 5th preset threshold U5.
If so, thening follow the steps S205；If it is not, then repeating step S204.
S205: control energy-accumulating power station discharges to Traction networks, meanwhile, control charging capacitor discharges to Traction networks.
In this way, the braking power consumption absorbed in charging capacitor and energy-accumulating power station can be fallen, in order to charging capacitor and Energy-accumulating power station continues the recycling of braking energy, saves operation cost.
To sum up, the braking recovery method of the train proposed according to embodiments of the present invention, first brakes train, and root Braking electric energy is generated according to brake force, and braking electric energy is fed back into Traction networks, then monitors the voltage of Traction networks, and according to traction The voltage control charging capacitor of net absorbs the braking electric energy of train, if the voltage of Traction networks continues to increase, then benefit It is absorbed with energy-accumulating power station.It discharges further, it is also possible to control energy-accumulating power station according to the voltage of Traction networks Traction networks, from And the brownout of Traction networks is avoided, maintain the normal work of Traction networks.In embodiments of the present invention, after being braked to train Braking electric energy is first fed back into Traction networks, it, can be equal by the braking electric energy of feedback at this time if the train on Traction networks is relatively more It is even to arrive other trains, therefore the voltage of Traction networks will not increase very much.If instead the train at this time on Traction networks is less, or The train braked at this time is more, then the voltage of Traction networks will increase, in embodiments of the present invention, preferentially using vehicle-mounted charge electricity Appearance absorbed, if the voltage of Traction networks continues to increase after vehicle-mounted charge capacitive absorption, reuse energy-accumulating power station into Row absorbs.The embodiment of the present invention absorbs braking electric energy by charging capacitor on train and energy-accumulating power station, to realize The recycling and reuse of braking electric energy, reduce energy waste, reduce the load of Traction networks.Also, the embodiment of the present invention is also The components of system can be protected, the safety of system is improved with the voltage of effective monitoring Traction networks.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (23)

1. a kind of braking recovery system of train characterized by comprising
Traction networks；
The multiple trains being connected on the Traction networks, each train include:
Electric brake；
Charging capacitor；
Distributor, the distributor are connected with the electric brake, have node between the distributor and the electric brake；
One end of two-way DC/DC converter, the two-way DC/DC converter is connected with the charging capacitor, the two-way DC/DC The other end of converter is connected with the node；
First controller, first controller are connected with the distributor and the two-way DC/DC converter, first control Device processed feeds back to institute for electric energy is braked for controlling the distributor and the two-way DC/DC converter in the train braking Traction networks are stated, and two-way DC/DC converter is controlled so that the charging capacitor is to the column according to the voltage of the Traction networks Vehicle braking electric energy is absorbed, wherein first controller is also used to the root in other train brakings on the Traction networks Two-way DC/DC converter is controlled according to the voltage of the Traction networks so that the charging capacitor is to the braking electric energy of other trains It is absorbed；
Energy-accumulating power station, the energy-accumulating power station are connected with the Traction networks, and the energy-accumulating power station includes second controller, and described second Controller is used to carry out charge or discharge according to the voltage of the Traction networks；
Wherein, braking electric energy is absorbed first with the charging capacitor, the energy-accumulating power station is recycled to be absorbed.
2. the braking recovery system of train as described in claim 1, which is characterized in that
First controller is used to control the charging capacitor when the voltage of the Traction networks is greater than the first preset threshold and inhale The braking electric energy is received as charging capacitor charging.
3. the braking recovery system of train as claimed in claim 2, which is characterized in that the train further include:
Mechanical brake, for carrying out mechanical braking to train.
4. the braking recovery system of train as claimed in claim 3, which is characterized in that
First controller is used to control the mechanical brake when the voltage of the Traction networks is greater than the second preset threshold Starting cooperation is implemented electric brake and is braked to the train, wherein the second preset threshold is greater than the first preset threshold.
5. the braking recovery system of train as described in claim 1, which is characterized in that
The second controller be used for the Traction networks voltage be greater than third predetermined threshold value when, control the energy-accumulating power station into Row charging.
6. the braking recovery system of train as claimed in claim 5, which is characterized in that
The second controller be used for when the voltage of the Traction networks is less than four preset thresholds, control the energy-accumulating power station into Row electric discharge, wherein the 4th preset threshold is less than the third predetermined threshold value.
7. the braking recovery system of train as claimed in claim 6, which is characterized in that
When the voltage of the Traction networks is less than five preset thresholds, the second controller controls the energy-accumulating power station to described Traction networks discharge, meanwhile, first controller controls the two-way DC/DC converter and enters discharge mode so that described The charging capacitor of train discharges to the Traction networks, wherein the 5th preset threshold is less than the 4th preset threshold.
8. the braking recovery system of train as described in claim 1, which is characterized in that the energy-accumulating power station be it is multiple, it is described Multiple energy-accumulating power stations are arranged according to pre-determined distance interval.
9. the braking recovery system of train as described in claim 1, which is characterized in that in every 3-6 kilometers described in setting two Energy-accumulating power station, the power of the energy-accumulating power station are 0.5-2MW.
10. a kind of train characterized by comprising
Electric brake；
Charging capacitor；
Distributor, the distributor are connected with the electric brake, have node between the distributor and the electric brake；
One end of two-way DC/DC converter, the two-way DC/DC converter is connected with the charging capacitor, the two-way DC/DC The other end of converter is connected with the node；
First controller, first controller are connected with the distributor and the two-way DC/DC converter, first control Device processed feeds back to institute for electric energy is braked for controlling the distributor and the two-way DC/DC converter in the train braking Traction networks are stated, and two-way DC/DC converter is controlled so that the charging capacitor is to the column according to the voltage of the Traction networks Vehicle braking electric energy is absorbed, wherein when connecting multiple trains on the Traction networks, first controller is also used in institute Two-way DC/DC converter is controlled so that the charging according to the voltage of the Traction networks when stating other train brakings on Traction networks Capacitor absorbs the braking electric energy of other trains.
11. the braking recovery system of train as claimed in claim 10, which is characterized in that
First controller is used to control the charging capacitor when the voltage of the Traction networks is greater than the first preset threshold and inhale The braking electric energy is received as charging capacitor charging.
12. the train as described in right wants 10, which is characterized in that further include:
Mechanical brake, for carrying out mechanical braking to train.
13. the braking recovery system of train as claimed in claim 12, which is characterized in that
First controller is used to control the mechanical brake when the voltage of the Traction networks is greater than the second preset threshold Starting cooperation is implemented electric brake and is braked to the train.
14. train as claimed in claim 10, which is characterized in that the train is straddle-type monorail train.
15. train as claimed in claim 14, which is characterized in that the train includes:
Bogie, the bogie are suitable for straddle seat on track girder；
Car body, the car body are connected with the bogie and are travelled by bogie traction along the track girder.
16. train as claimed in claim 15, which is characterized in that the bogie includes；
Bogie frame, the bogie frame are suitable for straddle seat and are connected on the track girder and with the car body；
Travelling wheel, the travelling wheel are pivotably mounted on the bogie frame and cooperate in the upper surface of the track girder On；
Power device, the power device are mounted on the bogie frame and are sequentially connected with the travelling wheel；
Horizontal wheels, the horizontal wheels are pivotably mounted on the bogie frame and cooperate in the side surface of the track girder On.
17. train as claimed in claim 16, which is characterized in that the bogie further include:
Traction device, the traction device are mounted on the bogie frame and are connected with the car body；
Supported and suspended device, the supported and suspended device are mounted on the bogie frame and are connected with the car body.
18. a kind of braking recovery method of train, which comprises the following steps:
The train is braked, and braking electric energy is generated according to brake force, and the braking electric energy is fed back into Traction networks；
Monitor the voltage of the Traction networks；
It controls charging capacitor according to the voltage of the Traction networks to absorb the braking electric energy of the train, wherein when described When connecting multiple trains on Traction networks, in other train brakings on the Traction networks, also according to the voltage of the Traction networks The charging capacitor for controlling the train absorbs the braking electric energy of other trains；
Energy-accumulating power station, which is controlled, according to the voltage of the Traction networks carries out charge or discharge；
Wherein, braking electric energy is absorbed first with the charging capacitor, the energy-accumulating power station is recycled to be absorbed.
19. the braking recovery method of train as claimed in claim 18, which is characterized in that further include:
When the voltage of the Traction networks is greater than the first preset threshold, control the charging capacitor absorb the braking electric energy with for The charging capacitor charging.
20. the braking recovery method of train as claimed in claim 19, which is characterized in that further include:
When the voltage of the Traction networks is greater than the second preset threshold, mechanical braking cooperation is carried out to train and implements electric braking to institute Train is stated to be braked.
21. the braking recovery method of train as claimed in claim 18, which is characterized in that further include:
When the voltage of the Traction networks is greater than third predetermined threshold value, controls the energy-accumulating power station and charge.
22. the braking recovery method of train as claimed in claim 21, which is characterized in that further include:
It when the voltage of the Traction networks is less than four preset thresholds, controls the energy-accumulating power station and discharges, wherein described Four preset thresholds are less than the third predetermined threshold value.
23. the braking recovery method of train as claimed in claim 22, which is characterized in that further include:
When the voltage of the Traction networks is less than five preset thresholds, controls the energy-accumulating power station and put to the Traction networks Electricity, meanwhile, it controls the charging capacitor and discharges to the Traction networks, wherein the 5th preset threshold is less than described the Four preset thresholds.
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