A kind of regenerating brake control method and deviceTechnical field
This disclosure relates to field of urban rail, more particularly to a kind of regenerating brake control method and device.
Background technology
In urban track traffic, the kinetic energy of train operation can be converted to electric energy by train when using regenerative braking, and insteadContact net of feeding is used for the train of adjacent operation, so as to save the energy.When the electric energy for feeding back to contact net is more, it can causeThe overtension of contact net, the normal operation of influence power station equipment and train.
At present, in order to maintain contact net voltage stabilization, when the voltage of contact net is higher than setting value (for example, 1.2 times of specified electricityPressure) when, train stops regenerative braking, starts resistive braking, converts electric energy to heat energy.However, consumption is in ohmically heat energy,Thermal pollution is not only formed, causes ambient temperature to raise, the power consumption of station air-conditioning system or electric substation's air-conditioning system is addedMeasure, and this partial brake energy fails to be recycled utilization, causes certain energy dissipation, reduces energy and uses effectRate.
The content of the invention
In view of this, the present disclosure proposes a kind of regenerating brake control method and device, it can solve the problem that train braking processThe problem of middle capacity usage ratio is low.
According to the one side of the disclosure there is provided a kind of control method of regenerative braking, for controlling regenerative braking electric energyFeedback device, wherein, the regenerative braking electric energy feedback device is connected via first switch with contact net and via second switchIt is connected with power network, including：The voltage of the contact net is gathered, and the voltage of the contact net is sampled, described connect is obtainedThe voltage parameter of net-fault, the voltage parameter is used to represent whether the voltage of the contact net to be more than setting value；When the voltageWhen parameter is more than the setting value, the first switch and second switch closure are controlled, to cause the contact net to pass throughIt is connected by the regenerative braking electric energy feedback device with the power network；Wherein, the regenerative braking electric energy feedback device includes：Hand overDC conversion unit, is connected via the first switch with the contact net, for being opened in the first switch and described secondIn the case that pass is in closure state, the voltage of the contact net is received, the voltage is converted into exchange by DC voltageVoltage；Transformer, is connected with the AC-DC conversion unit and is connected via the second switch with the power network, forIn the case that the first switch and the second switch are in closure state, receive described from the AC-DC conversion unitAlternating voltage, and be the voltage consistent with the power network by the alternating voltage transformation, the voltage after transformation is supplied to describedPower network.
For above-mentioned regenerating brake control method, in a kind of possible implementation, the electricity of the contact net is being gatheredPressure, and the voltage of the contact net is sampled, after the voltage parameter for obtaining the contact net, in addition to：When the electricityWhen pressing parameter less than or equal to the setting value, the first switch and the second switch is controlled to disconnect.
For above-mentioned regenerating brake control method, in a kind of possible implementation, in addition to：By the voltage parameterAnd the voltage parameter and the comparative result of the setting value are sent to rail traffic monitoring system.
According to another aspect of the present disclosure there is provided a kind of control device of regenerative braking, for controlling regenerative braking electricityEnergy feedback device, wherein, the regenerative braking electric energy feedback device is connected with contact net via first switch and opened via secondPass is connected with power network, including：Voltage parameter detection module, is connected with the contact net, the voltage for gathering the contact net,And the voltage of the contact net is sampled, to obtain the voltage parameter of the contact net, the voltage parameter is used to representWhether the voltage of the contact net is more than setting value；Control module, is connected with the voltage parameter detection module, for from describedVoltage parameter detection module receives the voltage parameter, and when the voltage parameter is more than the setting value, controls described theOne switch and the second switch closure, with cause the contact net via the regenerative braking electric energy feedback device with it is describedPower network is connected.
For above-mentioned regenerative brake control device, in a kind of possible implementation, the control module includes：ParameterJudging unit, is connected with the voltage parameter detection module, for receiving the voltage ginseng from the voltage parameter detection moduleNumber, and judge whether the voltage parameter is more than the setting value；Output control unit, is connected with the parameter judging unit,For receiving judged result from the parameter judging unit, and when the voltage parameter is more than the setting value, control is describedFirst switch and second switch closure, to cause the contact net via the regenerative braking electric energy feedback device and instituteState power network connection.
For above-mentioned regenerative brake control device, in a kind of possible implementation, the output control unit is also usedIn when the voltage parameter is less than or equal to the setting value, the first switch and the second switch is controlled to disconnect.
For above-mentioned regenerative brake control device, in a kind of possible implementation, in addition to：
Communication module, is connected with the parameter judging unit, for receiving judged result from the parameter judging unit, andThe judged result is sent to rail traffic monitoring system.
For above-mentioned regenerative brake control device, in a kind of possible implementation, the communication module be additionally operable to fromThe parameter judging unit receives the voltage parameter, and the voltage parameter is sent to the rail traffic monitoring system.
According to another aspect of the present disclosure there is provided a kind of regenerative braking electric energy reponse system, including：Regenerative braking electric energy is anti-Present device, be connected and be connected via second switch with power network with contact net via first switch, for the first switch withIn the case that the second switch is in closure state, receive the voltage of the contact net, the voltage is carried out conversion andTransformation, is supplied changing to the power network with the voltage after transformation；According to disclosure regenerative brake control device set forth above,It is connected with the contact net, for detecting the voltage parameter of the contact net and according to voltage parameter control described theThe folding condition of one switch and second switch.
For above-mentioned regenerative braking electric energy reponse system, in a kind of possible implementation, the regenerative braking electric energyFeedback device includes：AC-DC conversion unit, is connected via the first switch with the contact net, for being opened described firstThe voltage that the contact net is received in the case of being in closure state with the second switch is closed, by the voltage by direct currentVoltage conversion is alternating voltage；Transformer, is connected with the AC-DC conversion unit and via the second switch and the electricityNet connection, in the case of being in closure state in the first switch and the second switch, turns from the alternating current-direct currentChange unit and receive the alternating voltage, and be the voltage consistent with the power network by the alternating voltage transformation, after transformationVoltage is supplied to the power network.
Beneficial effect
During by being more than setting value in the voltage parameter for detecting contact net, control first switch and second switch closure,To cause contact net to be connected via regenerative braking electric energy feedback device with power network, controlled according to the regenerative braking of the embodiment of the present disclosureMethod, device and regenerative braking electric energy reponse system can be when contact net voltage be excessive, by the direct feedback of the electric energy of contact netInto power network.Compared to resistive braking is started when contact net voltage is excessive in the prior art, heat energy, this public affairs are converted electrical energy intoOpening the regenerating brake control method, device and regenerative braking electric energy reponse system of embodiment makes originally by the energy of resistance consumption to be hadEffect is used, and has both eliminated resistive braking part, saves investment, reduces the weight of train, train is taken full advantage of againRegenerating braking energy, improve the capacity usage ratio during train braking.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, the further feature and aspect of the disclosure will becomeIt is clear.
Brief description of the drawings
Comprising in the description and constituting accompanying drawing and the specification of a part of specification and together illustrate the disclosureExemplary embodiment, feature and aspect, and for explaining the principle of the disclosure.
Fig. 1 shows a kind of schematic diagram of a scenario of train regenerative braking；
Fig. 2 shows the flow chart of the regenerating brake control method according to the embodiment of the disclosure one；
Fig. 3 shows the flow chart of the regenerating brake control method according to the embodiment of the disclosure one；
Fig. 4 shows the application scenarios schematic diagram of the regenerative brake control device according to the embodiment of the disclosure one；
Fig. 5 shows the structured flowchart of the regenerative brake control device according to the embodiment of the disclosure one；
Fig. 6 shows the structured flowchart of the regenerative brake control device according to the embodiment of the disclosure one；
Fig. 7 shows the application scenarios schematic diagram of the regenerative braking electric energy reponse system according to the embodiment of the disclosure one.
Embodiment
Describe various exemplary embodiments, feature and the aspect of the disclosure in detail below with reference to accompanying drawing.It is identical in accompanying drawingReference represent the same or analogous element of function.Although the various aspects of embodiment are shown in the drawings, removeNon-specifically is pointed out, it is not necessary to accompanying drawing drawn to scale.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary "Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the disclosure, numerous details are given in embodiment below.It will be appreciated by those skilled in the art that without some details, the disclosure can equally be implemented.In some instances, forMethod well known to those skilled in the art, means, element and circuit are not described in detail, in order to highlight the purport of the disclosure.
Embodiment 1
The electric power system of urban track traffic mainly includes Bulk Supply Substation, medium-pressure electricity supply network, traction substation and ledDraw net system etc..Wherein, the 110KV high pressures in urban distribution network through transformer can be transformed to piezoelectricity in 35KV by Bulk Supply SubstationSource；Pressure in voltage source warp in the 35KV of Bulk Supply Substation can be fed out supply network and be assigned to each traction power transformation by medium-pressure electricity supply networkStand；Traction substation will can become to make for train after the rectified transformer pressure-reducing of voltage source in 35KV, then rectified device rectificationDc source；Traction contact system can be provided the dc source for coming from traction substation by contact net for trainElectric energy.According to IEC standard and China's code regulation, the rated voltage of urban rail transit in China contact net has two kinds, Yi ZhongshiDirect current 750V, another is direct current 1500V, and the maximum voltage that contact net allows is 1.2 times of rated voltages.
The braking of existing train can be divided into three phases to process：Regenerative braking, resistive braking and mechanical braking.ItsIn, regenerative braking and resistive braking are referred to as electric braking, by the way that the motor of train is changed into generator operating mode, make train operationKinetic energy be converted to electric energy, produce brake force, reach the purpose of train deceleration.As shown in figure 1, train stops from overhead current collectionAfterwards, the regenerative braking stage is initially entered, the electric energy that now train braking is produced is fed back on contact net, for for same sectionIn other train power supplies.When the voltage of contact net is in 1-1.2 times of rated voltage, and same section without other trains when, Huo ZhejieWhen the voltage of net-fault is higher than 1.2 times of rated voltages, traction control unit cuts off the electric energy fed back to contact net, and regenerative braking can notRealize, now into the resistive braking stage, the electric energy that train braking is produced is dissipated by resistance absorption with form of thermal energy.Work as trainWhen speed is less than 8km/h, by the use of compressed air as power source, implement mechanical braking, until train stops.
It should be noted that contact net is divided into the area between different sections, adjacent traction substation by traction substationSection is same section.Regeneration train and other trains shown in Fig. 1 belong to same section, wherein regeneration train refers to for contact netThe train of electric energy is provided.
The electric energy that the resistive braking stage is dissipated with form of thermal energy is not effectively utilized, and causes energy dissipation.ForThis, the disclosure provides a kind of regenerating brake control method and device, in the overtension of contact net, leads to the electric energy of contact netRegenerative braking electric energy feedback device is crossed to feed back to power network to improve the utilization rate of energy.
Fig. 2 shows the flow chart of the regenerating brake control method according to the embodiment of the disclosure one, and this method can be by servicingThe terminal devices such as device, computer are performed, and this method is used to control regenerative braking electric energy feedback device, wherein, regenerative braking electric energy is anti-Feedback device is connected with contact net via first switch and is connected via second switch with power network.As shown in figure 1, including：
Step S101, gathers the voltage of contact net, and the voltage of the contact net is sampled, and obtains the contact netVoltage parameter.
Step S102, judges whether voltage parameter is more than setting value.
Step S103, when voltage parameter is more than setting value, control first switch and second switch closure.
When voltage parameter is more than setting value, illustrate contact net overtension, control first switch and second switch are closedClose, the contact net can be caused to be connected via the regenerative braking electric energy feedback device with the power network, so that by contact netElectric energy feed back to power network.
On the basis of the regenerating brake control method according to the embodiment of the present disclosure, the braking procedure of train is：Train stopsOnly from overhead current collection, motor is changed to generator operating mode, implements regenerative braking, the kinetic energy of train operation is converted to electric energy,Produce brake force；When train speed is less than 8km/h, using compressed air source, implement mechanical braking, until train stopsOnly.In the regenerative braking stage, the electric energy that train braking is produced is uploaded to after contact net, can be arranged for other in same power supply sectionCar is powered, and can also feed back to power network.
When so, by being more than setting value in the voltage parameter for detecting contact net, control first switch and second switchClosure, to cause contact net to be connected via regenerative braking electric energy feedback device with power network.According to the regeneration system of the embodiment of the present disclosureThe electric energy of contact net can be directly fed back in power network when contact net voltage is larger, both eliminate resistance by flowing control methodBrake portion, saves investment, reduces the weight of train, and the regenerating braking energy of train can be made full use of again, improves rowCapacity usage ratio in car braking procedure.
Wherein, the voltage parameter is used to represent whether the voltage of the contact net to be more than setting value.It is possible in one kindIn implementation, the voltage of contact net can be sampled according to the predetermined sampling period.
The maximum voltage that setting value can allow according to contact net is configured.Provided according to industry, China's contact net is permittedPerhaps maximum voltage is 1.2 times of rated voltages, and in a kind of possible implementation, setting value can be according to 1.2 times of contact netsRated voltage be configured.
For example, setting value may be greater than contact net rated voltage, and less than or equal to the voltage of 1.2 times of rated voltagesValue.Specifically, when the only oriented contact net of same section provides the regeneration train of electric energy, setting value may be greater than specified electricityPressure and the value for being less than 1.2 times of rated voltages；When same section has other trains, setting value can be 1.2 times of rated voltagesValue.Because the electric energy that regeneration train continues that generation will be braked is supplied to contact net, the voltage of contact net can continue to increase, when sameWhen section is without other trains, setting value is set greater than rated voltage and less than the value of 1.2 times of rated voltages, can be kept awayExempt from potential over-pressed risk.Because other trains of same section can consume the electric energy of part contact net, the electricity of contact net is reducedPressure, when same section has other trains, is set to 1.2 times of rated voltages by setting value, can improve contact net electric energyDirect utilization rate.
The regenerative braking electric energy feedback device includes：AC-DC conversion unit, connects via the first switch with describedTouch net and connect, in the case of being in closure state in the first switch and the second switch, receive the contactThe voltage of net, alternating voltage is converted to by the voltage by DC voltage；Transformer, be connected with the AC-DC conversion unit,And be connected via the second switch with the power network, for being in closed form in the first switch and the second switchIn the case of state, the alternating voltage is received from the AC-DC conversion unit, and by the alternating voltage transformation be with it is describedThe consistent voltage of power network, the voltage after transformation is supplied to the power network.
Alternating current is converted to by setting AC-DC conversion unit by direct current, and transformer is set by the exchange after conversionElectricity is converted into the voltage class being adapted to power network, can be in contact net electricity according to the regenerating brake control method of the embodiment of the present disclosureWhen pressing through big, the direct current in contact net is electrically fed against in power network, so as to make full use of the regenerating braking energy of train, row are improvedCapacity usage ratio in car braking procedure.
In a kind of possible implementation, judge that voltage parameter, whether more than after setting value, works as electricity in step S102When pressing parameter less than or equal to setting value, control first switch and second switch disconnect.
When voltage parameter is less than or equal to setting value, control first switch and second switch disconnect, and can to connectTouch net and disconnected with power network, so as to retain the electric energy of contact net, and electric energy is provided for other trains of same section.
So, it can also be disconnected according to the regenerating brake control method of the embodiment of the present disclosure when contact net voltage is smallerThe connection of contact net and power network, retains the electric energy of contact net, and electric energy is provided for other trains of same section, improves contact net electricityThe direct utilization rate of energy.
It should be noted that power network can be the power networks such as urban distribution network, medium voltage network, this disclosure is not limited.
Fig. 3 shows the flow chart of the regenerating brake control method according to the embodiment of the disclosure one.As shown in figure 3, in stepS102 judges whether voltage parameter is more than after setting value, it may include：Step S104 is by voltage parameter and voltage parameter with settingThe comparative result of definite value is sent to rail traffic monitoring system.
, can be in order to monitoring personnel at any time by the way that voltage parameter and comparative result are sent to rail traffic monitoring systemThe state of contact net is grasped, is handled it in time.For example, monitoring personnel can be set according to judged result and voltage parameter adjustmentThe size of value, is steadily contacted the voltage of net.
Embodiment 2
Fig. 4 shows the application scenario diagram of the regenerative brake control device 100 according to the embodiment of the disclosure one.According to the disclosureThe regenerative brake control device 100 of one embodiment can control regenerative braking electric energy feedback device 200, as shown in figure 1, regeneration systemElectrokinetic energy feedback device 200 is connected with contact net 400 via first switch 300 and connected via second switch 500 with power network 600Connect.Wherein, the regenerative brake control device 100 mainly includes：Voltage parameter detection module 110 and control module 120.
Voltage parameter detection module 110 is connected with contact net 400, the voltage for gathering contact net 400, and to contact net400 voltage is sampled, and to obtain the voltage parameter of the contact net 400, the voltage parameter is used to represent contact netWhether voltage is more than setting value.Control module 120 is connected with the voltage parameter detection module 110, for being examined from voltage parameterSurvey module 110 and receive the voltage parameter, and when the voltage parameter is more than setting value, control first switch 300 and theTwo switches 500 are closed, to cause contact net 400 to connect via the regenerative braking electric energy feedback device 200 and the power network 600Connect.
On the basis of the regenerative brake control device according to the embodiment of the present disclosure, the braking procedure of train is：Train stopsOnly from overhead current collection, motor is changed to generator operating mode, implements regenerative braking, the kinetic energy of train operation is converted to electric energy,Produce brake force；When train speed is less than 8km/h, using compressed air source, implement mechanical braking, until train stopsOnly.In the regenerative braking stage, the electric energy that train braking is produced is uploaded to after contact net, can be arranged for other in same power supply sectionCar is powered, and can also feed back to power network.
When so, by being more than setting value in the voltage parameter for detecting contact net, control first switch and second switchClosure, to cause contact net to be connected via regenerative braking electric energy feedback device with power network, according to the regeneration system of the embodiment of the present disclosureThe electric energy of contact net can be directly fed back in power network when contact net voltage is excessive, both eliminate resistance by dynamic control deviceBrake portion, saves investment, reduces the quality of train, and the regenerating braking energy of train can be made full use of again, improves rowCapacity usage ratio in car braking procedure.
Wherein, voltage parameter detection module 110 can be adopted according to the predetermined sampling period to the voltage of contact net 400Sample, to obtain the voltage parameter of the contact net 400.
The maximum voltage that setting value can allow according to contact net is configured.Provided according to industry, China's contact net is permittedPerhaps maximum voltage is 1.2 times of rated voltages, and in a kind of possible implementation, setting value can be according to 1.2 times of contact netsRated voltage be configured.
For example, setting value may be greater than contact net rated voltage, and less than or equal to the voltage of 1.2 times of rated voltagesValue.Specifically, when the only oriented contact net of same section provides the regeneration train of electric energy, setting value may be greater than specified electricityPressure and the value for being less than 1.2 times of rated voltages；When same section has other trains, setting value can be 1.2 times of rated voltagesValue.Because the electric energy that regeneration train continues that generation will be braked is supplied to contact net, the voltage of contact net can continue to increase, when sameWhen section is without other trains, setting value is set greater than rated voltage and less than the value of 1.2 times of rated voltages, can be kept awayExempt from potential over-pressed risk.Because other trains of same section can consume the electric energy of part contact net, the electricity of contact net is reducedPressure, when same section has other trains, is set to 1.2 times of rated voltages by setting value, can improve contact net electric energyDirect utilization rate.
It should be noted that power network can be the power networks such as urban distribution network, medium voltage network, this disclosure is not limited.
Specifically, as shown in figure 5, in a kind of possible implementation, according to the regeneration system of disclosure above-described embodimentThe control module 120 of dynamic control device 100 can include：Parameter judging unit 121 and output control unit 122.Arrow in Fig. 5Head schematically shows the flow direction of control signal.Wherein, parameter judging unit 121 is connected with voltage parameter detection module 110, is used forFrom the receiving voltage parameter of voltage parameter detection module 110, and judge whether the voltage parameter is more than setting value；Output control listMember 122 is connected with parameter judging unit 121, for receiving judged result from parameter judging unit 121, and when the voltage parameterDuring more than setting value, control first switch 300 and second switch 500 are closed, to cause contact net 400 to be made via the regenerationElectrokinetic energy feedback device 200 is connected with the power network 600.
In a kind of possible implementation, output control unit 122 is additionally operable to when the voltage parameter is less than or equal toDuring the setting value, control first switch 300 and second switch 500 disconnect.
When so, by being more than setting value in the voltage parameter for detecting contact net, control first switch and second switchClosure, makes to feed back to electric energy in power network when contact net is over-pressed, makes full use of the regenerating braking energy of train, improve train brakingDuring capacity usage ratio；During by being less than or equal to setting value in the voltage parameter for detecting contact net, control first is openedClose and second switch disconnects, the electric energy of contact net is retained, so as to provide electric energy for other trains of same section, improveThe direct utilization rate of contact net electric energy.
In a kind of possible implementation, as shown in fig. 6, being controlled to fill according to the regenerative braking of disclosure above-described embodimentPutting 100 also includes：Communication module 130.Communication module 130 is connected with parameter judging unit 121, for from parameter judging unit121 receive judged result, and the judged result is sent to rail traffic monitoring system 700.
In a kind of possible implementation, communication module 130 is additionally operable to receive the voltage from parameter judging unit 121Parameter, and the voltage parameter is sent to rail traffic monitoring system 700.
, can be in order to monitoring personnel at any time by will determine that result and voltage parameter are sent to rail traffic monitoring systemThe state of contact net is grasped, is handled it in time.For example, monitoring personnel can be set according to judged result and voltage parameter adjustmentThe size of value, is steadily contacted the voltage of net.
In a kind of possible implementation, orbit monitoring system 700 can also monitor train operating conditions.Communication module130 are additionally operable to receive train operating conditions from rail traffic monitoring system, and when same section is not present beyond regeneration trainDuring other trains, output control unit 122 is notified.Output control unit 122 is additionally operable to work as voltage parameter more than rated voltage, andDuring less than or equal to the setting value, after the notice of the transmission of communication module 130 is received, control first switch 300 and theTwo switches 500 are closed.
So, by being less than or equal to setting value in the voltage parameter for detecting contact net, and same section is not present againWhen giving birth to other trains beyond train, control control first switch 300 and second switch 500 are closed, when making contact net over-pressedElectric energy is fed back in power network, resistive braking part has both been eliminated, investment is saved, the weight of train is reduced, can be kept away againThe potential overvoltage that contact-free net voltage persistently increases and caused.
Embodiment 3
Fig. 7 shows the schematic diagram of the concrete application scene of the regenerative braking electric energy reponse system according to the embodiment of the present disclosure.Label has identical function with Fig. 2 identical components in Fig. 5, for simplicity, omits the detailed description to these components.
As shown in fig. 7, regenerative braking electric energy reponse system can include regenerative braking electric energy feedback device 200 and regeneration is madeDynamic control device 100.Wherein, regenerative braking electric energy feedback device 200 is connected and passed through with contact net 400 via first switch 300It is connected by second switch 500 with power network 600, the situation for being in closure state in first switch 300 and second switch 500Under, the voltage of contact net 400 is received, the voltage is changed and transformation, is supplied changing with the voltage after transformation to electricityNet 600.Regenerative brake control device 100 is connected with contact net 400, for detect contact net 400 voltage parameter and according toThe folding condition of the voltage parameter control first switch 300 and second switch 400.
When so, by being more than setting value in the voltage parameter for detecting contact net, control first switch and second switchClosure so that contact net is connected via regenerative braking electric energy feedback device with power network, according to the regenerative braking of the embodiment of the present disclosureControl system can be changed the electric energy of contact net by regenerative braking electric energy feedback device when contact net voltage is excessiveFed back to after transformation in power network, both eliminated resistive braking part, save investment, reduce the weight of train, again can be withThe regenerating braking energy of train is made full use of, the capacity usage ratio during train braking is improved.
It should be noted that power network can be the power networks such as urban distribution network, medium voltage network, this disclosure is not limited.
In a kind of possible implementation, regenerative braking electric energy feedback device 200 can include：AC-DC conversion unit210 and transformer 220.AC-DC conversion unit 210 is connected via first switch 300 with contact net 400, in first switch300 and in the case that second switch 500 is in closure state, the voltage of contact net 400 is received, by the voltage by direct currentPressure is converted to alternating voltage.Transformer 220 is connected with AC-DC conversion unit 210 and via second switch 500 and power network 600Connection, in the case of being in closure state in first switch 300 and second switch 500, from AC-DC conversion unit 210The alternating voltage is received, and is the voltage consistent with the power network 600 by the alternating voltage transformation, by the voltage after transformationSupply to the power network 600.
Wherein, the DC side of AC-DC conversion unit 210 is connected via first switch 300 with contact net 400, alternating current-direct current dressThe AC for changing unit 210 is connected with the low-pressure side of transformer 220, and the high-pressure side of transformer 220 is via second switch 500 and electricityNet 600 is connected.Alternating current-direct current dress, which changes unit 210, to be alternating current by regenerating braking energy inversion unnecessary in contact net 400, insteadIt is fed to the low-pressure side of transformer 220.Transformer 220 can be converted to alternating voltage the voltage class being adapted to power network 600, andBy the alternating current after conversion, power network 600 is fed back to.
In a kind of possible implementation, alternating current-direct current dress changes unit 210 can deliver the change of stream for direct currents such as invertersDepressor.
Alternating current is converted to by setting AC-DC conversion unit by direct current, and transformer is set by the exchange after conversionElectricity is converted into the voltage class being adapted to power network, can be in contact net electricity according to the regenerative brake control system of the embodiment of the present disclosureWhen pressing through big, the direct current in contact net can be electrically fed against in power network, both eliminate resistive braking part, save investment,The weight of train is reduced, the regenerating braking energy of train is taken full advantage of again, the energy profit during train braking is improvedWith rate.
It is described above the presently disclosed embodiments, described above is exemplary, and non-exclusive, andIt is not limited to disclosed each embodiment.In the case of without departing from the scope and spirit of illustrated each embodiment, for this skillMany modifications and changes will be apparent from for the those of ordinary skill in art field.The selection of term used herein, purportThe principle, practical application or the technological improvement to the technology in market of each embodiment are best being explained, or is leading this technologyOther those of ordinary skill in domain are understood that each embodiment disclosed herein.