CN103153683B - Braking energy management system and control method thereof - Google Patents
Braking energy management system and control method thereof Download PDFInfo
- Publication number
- CN103153683B CN103153683B CN201080065461.7A CN201080065461A CN103153683B CN 103153683 B CN103153683 B CN 103153683B CN 201080065461 A CN201080065461 A CN 201080065461A CN 103153683 B CN103153683 B CN 103153683B
- Authority
- CN
- China
- Prior art keywords
- energy
- braking
- power system
- electric power
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/14—Supplying electric power to auxiliary equipment of vehicles to electric lighting circuits
-
- 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
- B60L7/14—Dynamic electric regenerative braking for vehicles propelled by ac motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
- B60L9/24—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
A kind of braking energy management system and control method thereof, for the braking energy of management and use Large-scale systems.By braking energy according to the AC system bus (80) feeding back to power system, be stored into apparatus for storing electrical energy (42), and import to the order that energy-dissipating device (43) consumes and manage.AC system bus has the non-tracted load of such as illumination etc., and for drawing the tracted load of another Large-scale systems.By detecting voltage and/or the current signal of AC system bus, the braking energy that cannot consume on AC system bus is made to be stored in apparatus for storing electrical energy, or consume in energy-dissipating device further, thus avoid the feedback of braking energy superior electrical network.The energy be stored in apparatus for storing electrical energy can discharge when needs.
Description
Technical field
The present invention relates to the management of high-speed train braking energy, Application way, especially relate to a kind of braking energy management system and control method thereof of magnetic-levitation train.
Background technology
The braking energy feedback produced in electric train braking procedure, to the DC bus of power supply unit, causes bus voltage to raise.
In order to bus voltage be limited in safe and reliable scope, the excess energy on bus must be shifted in time.Usually, the scheme of following several transfer energy is had:
At present, in the driving systems such as track traffic, elevator and milling train, mostly by braking resistor, excess energy is consumed in the form of heat.Adopt the system architecture of this scheme constructs simple, cost is low, but can cause the waste of a large amount of electric energy.
Ripe gradually along with parallel network reverse technology, can by combining inverter by unnecessary braking energy feedback to electrical network.Relevant application and product has been there is at present in track traffic and elevator.The shortcoming of this scheme can inject rush current and harmonic wave to electrical network, causes the electrical network quality of power supply to decline.
In recent years, have employed in some subway systems and utilize the ultracapacitor being connected on DC bus side to store unnecessary braking energy as closed-center system, and discharged these energy when launch train accelerates to provide the method for portion of energy.Propose in the patent application WO2007134674A1 of Siemens Company and a kind ofly regenerating braking energy is recovered to circuit in ultracapacitor and control method.This system is equipped with ultracapacitor ON TRAINS, and this ultracapacitor absorbs the braking energy of train, for train provides required energy in midway accelerator.After train enters the station, the charging unit at station according to the size of ultracapacitor dump energy determine whether to charging.The patent CN101100170A of HIT, US Patent No. 20080000381, US4523059 it is also proposed similar scheme.Such as, but some closed-center system, the charge/discharge rates of Ni-MH battery, energy accumulation device for fly wheel is excessively slow, can not meet the requirement that high-speed maglev train braking energy stores.The more important thing is that the finite energy that the closed-center system comprising ultracapacitor at present stores can not meet the storage of a large amount of braking energys.
Also there is the technology that some combine such scheme.Such as US Patent No. 20060005738A1 proposes a kind of vehicle-mounted closed-centre system, for absorption and regeneration braking energy.This system is mainly used in electric locomotive, absorb braking energy, and for train accelerate energy is provided.This closed-centre system can also accept the charging of extra power.Train is equipped with the energy that braking resistor cannot absorb to consume closed-center system.But have a large amount of energy after all unnecessarily to be consumed.Chinese patent CN101249802 proposes the urban rail traffic vehicle braking energy recovery system utilizing ultracapacitor energy storage, and wherein the energy of ultracapacitor provides electric power by subordinate inverter, for Smaller load such as ventilation, illuminations in car.But the inversion scheme of the program also cannot promote the use of large load.
On the whole, when the braking energy exceeding its capacity occurs, the closed-center system of above-mentioned technology not to possess by DC bus to ac bus feedback and the function effectively controlled to the feedback of public exchange electrical network, can only be fallen by the resistance consumption on DC bus.
High-speed maglev train produces huge braking energy in braking procedure, and owing to lacking suitable energy transfer scheme, these braking energys are braked chopper with the form consumption of heat energy in braking resistor, cause the waste of large energy.These problems are present in the motor driven systems of the frequent acceleration and deceleration such as such as track traffic, steel rolling, elevator equally.
Summary of the invention
The present invention proposes a kind of management system and the control method that effectively utilize braking energy, to reduce the waste of energy.
One aspect of the present invention proposes a kind of braking energy management system, be contained in a traction system, the converter device that this traction system comprises electric power system bus, uses to be applicable to this traction electric machine for the traction electric machine that draws a power system and the electric power signal that converts this electric power system bus, this braking energy management system comprises energy back feed device, apparatus for storing electrical energy, energy-dissipating device and control setup.Energy back feed device connects converter device and electric power system bus, when energy back feed device is activated, from converter device acquisition braking energy and to braking energy described in the feedback of electric power system bus.Apparatus for storing electrical energy, by first controlled this converter device of conduct electrical energy Path Connection and this electric power system bus one of them.Energy-dissipating device is by second controlled this converter device of conduct electrical energy Path Connection.Control setup, in order to perform following operation:
When detecting that power system is braked, first start energy back feed device, braking energy to be directed into this electric power system bus;
When the energy requirement of the tracted load detected on this electric power system bus and/or non-tracted load is less than braking energy, open the first conduct electrical energy path with by energy storage to this apparatus for storing electrical energy; And
When detecting that apparatus for storing electrical energy is filled with electric energy, open the second conduct electrical energy path energy to be imported to this energy-dissipating device consumption.
In one embodiment of this invention, energy back feed device can configure independent of converter device.In this instance, energy back feed device can be inverter.In another embodiment, energy back feed device can be integrated in converter device, enables converter device oppositely braking energy is transformed to the electric power signal being suitable for electric power system bus.
In one embodiment of this invention, braking energy management system also can comprise a connection fender guard, its response control apparatus and open or close the first conduct electrical energy path, makes apparatus for storing electrical energy carry out charge or discharge.
In one embodiment of this invention, braking energy management system also can comprise a braking chopping device, its response control apparatus and open or close the second conduct electrical energy path, whether imports energy-dissipating device to control energy.
In one embodiment of this invention, control setup can provide any time of energy to open the first conduct electrical energy path, to discharge the energy of apparatus for storing electrical energy to traction electric machine at needs.
In one embodiment of this invention, apparatus for storing electrical energy can comprise at least one in storage battery, ultracapacitor, flywheel energy storage, superconduction inductive energy storage, flow battery, compressed-air energy storage.
In one embodiment of this invention, converter device can comprise inverter, rectifier and the DC bus between inverter and rectifier, and wherein rectifier is the conventional rectifiers only carrying out rectification.In another embodiment, rectifier can be optimized for the four-quadrant rectifier that can carry out rectification and inversion, thus converter device obtains bi-directional electric power feeding ability.
In one embodiment of this invention, rectifier can be uncontrollable rectifier device, half-control rectifier, full-controlled rectifier device or its combination.
In one embodiment of this invention, inverter can be two level, three level or many level topological structure.
Another aspect of the present invention proposes a kind of braking energy management process, be applied to a traction system, this traction system comprises electric power system bus, for drawing the traction electric machine of a power system, and the converter device that the electric power signal converting this electric power system bus uses to be applicable to this traction electric machine, the method comprises the following steps: when detecting that this power system is braked, use braking energy that this converter device obtains from traction electric machine by an energy back feed device preferentially to this electric power system bus feedback, think that non-tracted load on this electric power system bus and/or tracted load are powered, when the energy requirement of the tracted load detected on this electric power system bus and/or non-tracted load is less than braking energy, braking energy is stored into an apparatus for storing electrical energy, and when detecting that apparatus for storing electrical energy is filled with electric energy, braking energy is imported to an energy-dissipating device consumption.
In one embodiment of this invention, whether the energy requirement detecting tracted load on electric power system bus and/or non-tracted load is less than braking energy comprises the voltage detected on this electric power system bus and whether is greater than a voltage threshold.
In one embodiment of this invention, power for the non-tracted load on this electric power system bus and/or tracted load and comprise: power with the predetermined power corresponding to the non-tracted load on this electric power system bus; And when detecting that this electric power system bus existing another power system is pulled, this energy back feed device is continued to this electric power system bussed supply.
In one embodiment of this invention, detect that apparatus for storing electrical energy is filled with electric energy and comprises the DC bus-bar voltage detected in converter device and whether be greater than a voltage threshold.
In one embodiment of this invention, the power discharging the energy of apparatus for storing electrical energy carries out according to predetermined curve.
Another aspect of the present invention proposes a kind of braking energy management process, be applied to a traction system, multiple converter devices that this traction system comprises electric power system bus, uses to be applicable to each traction electric machine for multiple traction electric machine of drawing multiple power system and the electric power signal that converts this electric power system bus, the method comprises the following steps: when the arbitrary power system in multiple power system is braked, and utilizes braking energy that this converter device obtains from traction electric machine by an energy back feed device preferentially to this electric power system bus feedback; When the energy requirement of the tracted load detected on this electric power system bus and/or non-tracted load is less than braking energy, braking energy is stored into an apparatus for storing electrical energy; And when detecting that apparatus for storing electrical energy is filled with electric energy, braking energy is imported to an energy-dissipating device consumption.
Power system in the present invention is not limited in high-speed maglev train, but can be widely used in the systems such as other track traffic, steel rolling, elevator.
Above-mentioned general description of the present invention and following detailed description of the invention should not be considered as restrictive.In addition, except content set forth herein, also feature or conversion can be provided.The embodiment such as described in a specific embodiment can relate to manifold combination and sub-portfolio.
summary of drawings
Feature of the present invention, performance are further described by following embodiment and accompanying drawing thereof.
Fig. 1 is the system chart of one embodiment of the invention;
Fig. 2 is the energy management diagram of circuit of the embodiment of the present invention;
Fig. 3 (a) is the stored energy-release control flow process of the apparatus for storing electrical energy in Fig. 1;
Fig. 3 (b) is to release energy control flow to braking resistor in Fig. 1;
Fig. 4 is the connection diagram of apparatus for storing electrical energy in Fig. 1 and current transformer DC bus;
Fig. 5 is the schematic diagram that depiction 1 braking energy utilizes management;
Fig. 6 is according to a kind of mode accessing current transformer direct current bus device of the present invention;
Fig. 7 is the mode according to another kind access current transformer direct current bus device of the present invention;
Fig. 8 is that in the present invention, current transformer Converting Unit is an embodiment of three-level inverter;
Fig. 9 is that in the present invention, current transformer Converting Unit is another embodiment of three-level inverter;
Figure 10 is that in the present invention, current transformer Converting Unit is an embodiment of two-level inverter;
Figure 11 is the embodiment that the closed-center system in the present invention is connected with ac bus;
Figure 12 is that in the present invention, current transformer rectifying part is an embodiment of uncontrollable rectifier;
Figure 13 is that in the present invention, current transformer rectifying part is an embodiment of half control rectification;
Figure 14 is that in the present invention, current transformer rectifying part is an embodiment of full-controlled rectifier.
preferred forms of the present invention
Fig. 1 illustrates the system chart of one embodiment of the invention.In environment shown in Fig. 1, by three-phase alternating current system busbar 80 to each energy converter, such as, power for the traction current transformation apparatus 70 of a train 50 and another traction current transformation apparatus 70a of another train 50a.In the present embodiment, the involved loads demand of tractor-trailer train 50a is called tracted load.The train of more than two or two is connected by the supply network of three-phase alternating current system busbar 80 composition, can share the electric energy provided by supply network.Three-phase alternating current system busbar 80 also can be powered to the non-tracted load 30 of the non-immediate such as such as relatively little power, illumination for tractor-trailer train.Be understandable that, the present invention is not limited to environment as shown in Figure 1, but can be widely used in the systems such as other track traffic, steel rolling, elevator.
Higher level's electrical network 100, after three-phase alternating current main transformer 90 converts, can provide electric energy to three-phase alternating current system busbar 80.The converter device 70 comprising rectifier 71, intermediate dc bus 72 and inverter 73 can be set between three-phase alternating current system busbar 80 and train 50.In an embodiment of the present invention, electric energy can be transported to train 50 from AC system bus 80 by converter device 70, and direction that at least can be contrary is transported to intermediate dc bus 72 after being converted by braking energy.
In the present embodiment, braking energy management system 40 can comprise energy back feed device 401, energy feedback control setup 41, apparatus for storing electrical energy 42 and energy-dissipating device 43.Apparatus for storing electrical energy 42 can be storage battery, also can be the electrical energy storage device of other types such as ultracapacitor, flywheel energy storage, superconduction inductive energy storage, flow battery, compressed-air energy storage.Energy-dissipating device 43 is such as the device that energy can be dissipated with heat energy or alternate manner.Usually, select resistance as the element of energy-dissipating device 43.
In the embodiment shown in fig. 1, when train braking, realize the complex energy management of braking energy in following three: tracted load 70a and/or the non-tracted load 30 of AC system bus 80 utilize energy, apparatus for storing electrical energy 42 stored energy, energy-dissipating device 43 consumed energy.
According to the present embodiment, when the train 50 in system is braked, braking energy feeds back to intermediate dc bus 72 by inverter 73.Be alternating current to realize the DC inverter of intermediate dc bus 72, available energy feedback device 401 inversion is alternating current, is preferentially supplied to non-tracted load 30 on AC system bus 80 or tracted load 70a uses.In one embodiment, energy back feed device 401 can be made up of independent inverter, and this describes in reference to the embodiment of Fig. 8-10.In another embodiment, rectifier 71 can be configured to have invert function, energy can the rectifier (being called as four-quadrant rectifier) of two-way flow, this describes in reference to the embodiment of Fig. 6 and Fig. 7.This is equivalent to energy back feed device 401 to be integrated in converter device 70, makes it can bidirectional transmission energy.
Control to implement braking energy, system also comprises energy feedback control setup 41.As required, energy feedback control setup 41 can be connected to AC system bus 80, energy back feed device 401, converter device 70, connect fender guard 45, braking chopping device 44 in part or all of, to realize detection and the energy management of state of the system.
On the one hand, first the braking energy be fed back on AC system bus 80 meets the non-immediate such as power, illumination on this bus and uses for the load 30 of tractor-trailer train.To an AC system bus, the power of non-train traction load is generally substantially constant.In the present embodiment; energy feedback control setup 41 both can by this load value of Real-Time Monitoring; also by pre-setting a fixing magnitude of power and the electric energy controlling conveying on AC system bus 80 is not more than this setting value, electric energy not superior electrical network 100 feedback be fed back on AC system bus 80 can be guaranteed.
On the other hand, when a train (as train 50) braking, and another time train (as train 50a) is when being pulled, energy is obtained from higher level's electrical network 100, system busbar voltage class is transformed into by voltage transformer 90, by the converter device (not shown) that is associated with trailed train to train power supply, tractor-trailer train runs.At this moment, energy feedback control setup 41, by detecting the situation of main transformer 90 outgoing side electric current, can judge whether train traction, if any, then the energy controlling braking train 50 continues to AC system bus 80 feedback.
Further, if energy feedback control setup 41 detects that the workload demand of AC system bus 80 is less than the braking energy that now may be fed back to ac bus 80, then start apparatus for storing electrical energy 42 and store.When train 50 again starts or accelerates, the energy of storage can discharge by given pace, to be that next energy absorbing is ready.
In addition, if energy feedback control setup 41 detects that apparatus for storing electrical energy 42 is filled with energy, then remaining braking energy is consumed by energy-dissipating device 43.
In an embodiment of the present invention, inverter 73 can be three-phase inverter, and this three-phase inverter 73 can be three-level current transformer, also can be the Multilevel Inverters that two level current transformers or other level progression are greater than 3.The electric energy that converter device 70 provides voltage, electric current and frequency to regulate to motor 60, runs with tractor-trailer train 50.
In the present embodiment, converter device 70 is that the energy of dual pulse width modulation can feedback type current transformer.In the enforcement train traction stage, converter device 70 obtains electric energy from three-phase alternating current system busbar 80.And in the train braking stage, braking energy also can transmit from motor 60 to ac bus 80 direction.In the background of high speed Maglev, three-phase alternating current system busbar 80 is 20kV buses, but this is intended to the voltage magnitude that exemplarily illustrates that the present invention can apply, but not as restriction.
Apparatus for storing electrical energy 42 can by closed-center system, and such as ultracapacitor and corresponding control setup form.In order to protect apparatus for storing electrical energy 42, arranging in the front end of apparatus for storing electrical energy 42 and connecting fender guard 45.Connect the conduct electrical energy path that fender guard 45 can control between apparatus for storing electrical energy 42 and the intermediate dc bus 72 of converter device be attached thereto, to determine that release stores or releases energy.
When braking energy cannot flow to other direction, consume time, consumed by energy-dissipating device 43.The element of energy-dissipating device 43 can be the resistance meeting power demand under train maximum possible brake condition that cast iron or corrosion-resistant steel or other material are made.Energy-dissipating device 43 is connected to converter device intermediate dc bus 72 through braking chopping device 44, this braking chopping device 44 can open or close the conduct electrical energy path between energy-dissipating device 43 and intermediate dc bus 72, whether flows to energy-dissipating device 43 to control electric current.
Non-tracted load 30 can comprise the non-draw gear such as power, illumination equipment be connected on AC system bus 80.
Converter device 70a is the tracted load relevant with another train of traction 50a be connected on AC system bus 80.This another train 50a can have the energy management system 40a similar to train 50.
Fig. 2 is the braking energy management process that one embodiment of the invention is shown in a flowchart.Fig. 5 illustrates 3 kinds of circulation paths of braking energy intuitively, the flow direction of the represented by dotted arrows energy in Fig. 5.The control flow of energy management system in the present embodiment is described referring to Fig. 2 and Fig. 5:
In step 301, when tractor-trailer train 50 runs, system obtains energy from three-phase alternating current system busbar 80, by rectifier 71, intermediate dc bus 72, inverter 73, delivers to motor 60, drives train 50 to run.
When train 50 is braked, the kinetic energy of train 50 becomes electric energy by motor 60, then by braking energy, the load 70a, 30 be preferentially supplied under three-phase alternating current system busbar 80 uses by inverter 73, intermediate dc bus 72, rectifier 71.
Specifically, in step 302, be fed back to braking energy on AC system bus 80 and first provide electric energy to non-immediate such as the power on AC system bus, illuminations for the load 30 of tractor-trailer train.To an AC system bus, the power of non-train traction load is generally substantially constant.Can pre-set a fixing power threshold P0, this power threshold P0 is not more than the power of non-tracted load 30, and the power controlling conveying on AC system bus 80 is not more than P0.
In step 303, when a train, as train 50 is braked, and another train, as train 50a be pulled time, system obtains energy from higher level's electrical network 100, is transformed into the voltage class of AC system bus 80 by three-phase alternating current main transformer 90, powered to its long stator synchronous linear motor 60a by the converter device 70a corresponding to train 50a, run with tractor-trailer train 50a.At this moment, by bus voltage, current sense function detection ac bus system 80 load condition (overall target of this load representative voltage and electric current) of energy feedback control setup 41, can judge whether that train is just pulled, if any, then the energy controlling train 50 continues to ac bus system 80 feedback.
In step 304, if the load 70a on AC system bus 80,30 energy requirement sum be less than now may the braking energy of feedback straight edge line, then start apparatus for storing electrical energy 42 and store.By detecting the voltage Vx of the intermediate dc bus 72 of converter device 70, judge whether apparatus for storing electrical energy 42 is filled with, and as being filled with, then enters into step 305.
In step 305, remaining braking energy, by braking chopping device 44, all flows to energy-dissipating device 43, is consumed by energy-dissipating device 43.
Stating in energy management control process on the implementation, system energy feedback control setup 41, by detecting ac bus 80 voltage and/or electric current, avoiding the feedback of braking energy superior electrical network 100.
In above-mentioned steps 304, the charging and discharging of apparatus for storing electrical energy 42 controls as shown in Fig. 3 (a).With dual pulse width modulation energy can the DC bus-bar voltage V1 of intermediate dc bus 72 of feedback type converter device 70 and input side rectifier (namely from AC system bus 80 side) electric current (or power) I1 for reference, implement the storage of energy or the release to intermediate dc bus 72.This can be avoided on controlling, carry out complicated cooperation control with converter device 70.Mode is:
In step S10, control setup 41 detects the DC bus-bar voltage of intermediate dc bus 72.When DC bus-bar voltage being detected in step S11 higher than voltage threshold V1, apparatus for storing electrical energy 42 in step S12 stored energy to being filled with.
In step S13, control setup 41 detects converter device input side power P 1, or reacts the current value I1 of this magnitude of power.When detecting that in step S14 input side rectifier power P 1 (or current value I1) is greater than 0, illustrating that converter device 70 receives energy from three-phase alternating current system busbar 80 side draught, after being converted by converter device 70, providing haulage capacity to traction electric machine.Now, apparatus for storing electrical energy 42 also releases energy to intermediate dc bus 72, and the fault offset stored in the last brake stage, out for tractor-trailer train provides portion of energy, is that the train braking stage charges ready to apparatus for storing electrical energy 42 next time simultaneously.
Need to illustrate, the opportunity that apparatus for storing electrical energy 42 releases energy is not limited to above-mentioned example, in fact.Control setup 41 can think the energy needing any moment release apparatus for storing electrical energy 42 providing energy to traction electric machine 60.
About energyreleaserate, suppose the power that P2 represents the maximum power of apparatus for storing electrical energy 42, P1 represents the input side rectifier detected, as P1 > P2 (step S15), apparatus for storing electrical energy 42 releases energy (step S16) with power P 2; Otherwise apparatus for storing electrical energy 42 releases energy (step S17) with power P 1.In above-mentioned step 305, the charge and discharge control of energy-dissipating device 43 is with reference to shown in Fig. 3 (b), DC bus-bar voltage threshold value V2 is set, DC bus-bar voltage (step S20) is detected by converter device 70, whether be greater than threshold value V2 (step S21) according to the DC bus-bar voltage of intermediate dc bus 72, control whether discharge electric energy to energy-dissipating device 43.When DC bus-bar voltage is greater than threshold value V2, starts braking chopping device 44, release energy (step S22) to energy-dissipating device 43.
Above-mentioned threshold value V1, V2 are the DC bus-bar voltage of intermediate dc bus 72, and its magnitude relationship is V2 > V1.As an example, intermediate dc bus voltage is ± 2500V.Threshold voltage desirable V1 in side circuit is ± 2300V, V2 are ± 2700V.
Fig. 5 illustrates apparatus for storing electrical energy 42 and DC bus connection diagram.Apparatus for storing electrical energy 42 and converter device 70 need cooperation control in several.An example is the cooperation control of Preservation tactics, in order to avoid affecting the Preservation tactics of converter device 70, increases full control switch 46 between the pre-charge circuit 48 and circuit breaker 47 of apparatus for storing electrical energy 42.When implementing emergency protection, converter device 70 can cut off apparatus for storing electrical energy 42 provides energy to converter device 70 path by intermediate dc bus 72 at once.
Another example shuts down electric discharge cooperation control.Circuit breaker 47 can disconnect when maintenance down by converter device 70, thus the electrical connection realized between apparatus for storing electrical energy 42 and converter device 70 and cut-out.
When converter device 70 is three-level current transformer, the access way of apparatus for storing electrical energy 42 and discharge and recharge also need to carry out cooperation control with three level neutral-point voltage balance.
Fig. 6 is according to a kind of mode accessing current transformer DC bus of the present invention, with reference to shown in Fig. 6, three-phase alternating current system busbar 801 by voltage transformer 712,716,717 with 718 group be connected rectifier 711,715 and rectifier 713,714 respectively.Inductance 722,722 ' is smoothing reactor, and electric capacity 741,742 is voltage support electric capacity.Resistance 431,431 ' and cable, cabinet and the cooling mechanism that may have of scheming not show form energy-dissipating device 44, the switching valve 441,441 ' that controlled device 401 controls forms braking chopping device 44.Inversion unit 731 is connected across between positive and negative DC bus, forms a brachium pontis of inverter.Three inversion units 731 are comprised in converter device.Apparatus for storing electrical energy 421 and 422 is connected across on positive and negative DC bus after connecting.Apparatus for storing electrical energy 421,422 is when releasing energy to DC bus 72, and the mode that small area analysis can be taked to release energy, avoids impact rectifying part being controlled to neutral point voltage balance.
Fig. 7 is the mode according to another kind access current transformer direct current bus device of the present invention.Most of structure in Fig. 7 is identical with Fig. 6, and just apparatus for storing electrical energy 421 and 422 is connected across between the positive and negative DC bus of inverter and center line respectively.This mode be connected across respectively on upper and lower two electric capacity, can strengthen the neutral balance ability of converter device.
Above-mentioned two kinds of modes of apparatus for storing electrical energy access intermediate dc bus all can, when train accelerates, assist to provide haulage capacity, thus cancellation be from the endergonic spike of electrical network.
Rectifier 71 except adopt with inverter 73 same structure not only can inversion, but also can except the device of rectification, may also be the uncontrollable rectifier of the three phase full bridge be made up of power diode as shown in figure 12, or the half-control rectifier shown in Figure 13, or the full-controlled rectifier device shown in Figure 14.Below introduce the embodiment adopting these not comprise the rectifier of invert function.
Fig. 8 is that in energy management system of the present invention, current transformer Converting Unit is an embodiment of three-level inverter.With the example class of Fig. 6 seemingly, in the present embodiment, energy back feed device 401,402, apparatus for storing electrical energy 421,422, and energy-dissipating device 431,432, directly receive on the positive and negative DC bus of three-level inverter 731,732 respectively.Energy back feed device 401,402 is and inverter 731,732 identical inverters, can is alternating current by DC power conversion.
Fig. 9 is that in energy management system of the present invention, current transformer Converting Unit is an embodiment of three-level inverter.With the example class of Fig. 7 seemingly, in the present embodiment, energy back feed device 401 and 402,403 and 404, apparatus for storing electrical energy 421 and 422,423 and 424, and energy-dissipating device 431 and 432,433 and 434, between the positive and negative DC bus being connected across three-level inverter 731,732 respectively and split capacitor mid point.
Figure 10 is that in energy management system of the present invention, current transformer Converting Unit is an example of two-level inverter.In the present embodiment, energy back feed device 401,402, apparatus for storing electrical energy 421,422, and energy-dissipating device 431,432, directly receive on the positive and negative DC bus of two-level inverter 731,732 respectively.
Figure 11 is the embodiment that in the present invention, apparatus for storing electrical energy receives ac bus.In the present embodiment, apparatus for storing electrical energy 421 is free of attachment to the DC bus of the intermediate dc bus 72 of inverter, but is connected to the ac bus 80 of system.Different from the embodiment being connected to inverter DC bus, the embodiment being connected to system ac bus 80 has following benefit: one is can be applied in the inverter without DC bus, as AC/AC motor driving system, matrix form motor driving system etc.Two is that a set of energy accumulating device can jointly for many cover inversion systems, by contrast, only can be used for a set of inversion system to use at the energy storage system being connected to inverter DC bus simultaneously.
Figure 12 is that in the present invention, current transformer rectifying part is an embodiment of uncontrollable rectifier bridge.In the present embodiment, uncontrollable rectifier bridge 761 is connected with inverter 762, for traction electric machine 763 is powered.
Figure 13 is that in the present invention, current transformer rectifying part is an example of half control rectifier bridge.In the present embodiment, half control rectifier bridge 764 is connected with inverter 765, for traction electric machine 766 is powered.
Figure 14 is that in the present invention, current transformer rectifying part is an example of full-controlled rectifier bridge.In the present embodiment, full-controlled rectifier bridge 771 is connected with inverter 772, for traction electric machine 773 is powered.
Embodiments of the invention being passed through brake energy feedback system bus, being stored for utilizing next time by apparatus for storing electrical energy, have reclaimed braking energy, have decreased the waste of energy.In addition, owing to feeding back to the energy of system busbar only for the non-draw gear in one's respective area or other draw gear, not feedback higher level electrical network, so the harmonic pollution for higher level's electrical network and feedback current impact can not be caused.
For each current transformer situation in a certain Traction Station, its configuration condition is as follows: allow the power of feedback system bus to calculate according to the assembly average 1MW of non-draw gear; Energy-storage units is configured to 105MJ/1MW (often overlapping current transformer joins a set of).
For one 5 marshalings, its braking energy is 391.2MJ altogether.Wherein, the non-draw gear of system busbar consumes braking energy 90.42MJ altogether, apparatus for storing electrical energy Absorbable rod braking energy 238.9MJ, and braking resistor consumes braking energy 61.85MJ.Braking energy degree of utilization is up to 84%, and energy-saving effect is obvious.
By further rationally layout Transportation Organization, at the multiple train converter devices ensureing to be connected on same system bus, during one train braking, other vehicle is separately had to be in traction state, the braking energy be then consumed in braking resistor obviously can reduce or be 0, and such braking energy degree of utilization can larger raising.
Claims (19)
1. a braking energy management system, be contained in a traction system, the converter device that this traction system comprises electric power system bus, uses to be applicable to this traction electric machine for the traction electric machine that draws a power system and the electric power signal that converts this electric power system bus, this braking energy management system comprises:
Energy back feed device, connects this converter device and this electric power system bus, when this energy back feed device is activated, from this converter device acquisition braking energy and to braking energy described in this electric power system bus feedback;
Apparatus for storing electrical energy, by first controlled this converter device of conduct electrical energy Path Connection and this electric power system bus one of them;
Energy-dissipating device, by second controlled this converter device of conduct electrical energy Path Connection; Wherein
Described apparatus for storing electrical energy comprises at least one in storage battery, ultracapacitor, flywheel energy storage, superconduction inductive energy storage, flow battery, compressed-air energy storage; And
Control setup, in order to perform following operation:
When detecting that power system is braked, first start energy back feed device, braking energy to be directed into this electric power system bus;
When the energy requirement of the tracted load detected on this electric power system bus and/or non-tracted load is less than braking energy, open the first conduct electrical energy path with by energy storage to this apparatus for storing electrical energy; And
When detecting that apparatus for storing electrical energy is filled with electric energy, open the second conduct electrical energy path energy to be imported to this energy-dissipating device consumption.
2. braking energy management system according to claim 1, wherein said energy back feed device configures independent of described converter device.
3. braking energy management system according to claim 2, wherein said energy back feed device is inverter.
4. braking energy management system according to claim 1, wherein said energy back feed device is integrated in described converter device, enables described converter device oppositely braking energy is transformed to the electric power signal of electric power system bus.
5. braking energy management system according to claim 1, also comprises a connection fender guard, responds described control setup and open or close described first conduct electrical energy path, makes described apparatus for storing electrical energy carry out charge or discharge.
6. braking energy management system according to claim 1, also comprises a braking chopping device, responds described control setup and open or close described second conduct electrical energy path, whether imports described energy-dissipating device to control energy.
7. braking energy management system according to claim 1, wherein control setup provides any time of energy to open this first conduct electrical energy path, to discharge the energy of this apparatus for storing electrical energy at needs to traction electric machine.
8. braking energy management system according to claim 2, wherein said converter device comprises inverter, rectifier and the DC bus between inverter and rectifier.
9. braking energy management system according to claim 4, wherein said converter device comprises inverter, rectifier and the DC bus between inverter and rectifier, and wherein said rectifier is the four-quadrant rectifier that can carry out rectification and inversion.
10. braking energy management system according to claim 8, wherein said rectifier is uncontrollable rectifier device, half-control rectifier, full-controlled rectifier device or its combination.
11. braking energy management systems according to claim 8 or claim 9, wherein said inverter is two level, three level or many level topological structure.
12. 1 kinds of braking energy management processs, be applied to a traction system, the converter device that this traction system comprises electric power system bus, uses to be applicable to this traction electric machine for the traction electric machine that draws a power system and the electric power signal that converts this electric power system bus, the method comprises the following steps:
When detecting that this power system is braked, using braking energy that this converter device obtains from traction electric machine by an energy back feed device preferentially to this electric power system bus feedback, thinking that non-tracted load on this electric power system bus and/or tracted load are powered;
When the energy requirement of the tracted load detected on this electric power system bus and/or non-tracted load is less than braking energy, braking energy is stored into an apparatus for storing electrical energy;
When detecting that apparatus for storing electrical energy is filled with electric energy, braking energy is imported to an energy-dissipating device consumption.
13. braking energy management processs according to claim 12, whether the energy requirement wherein detecting tracted load on this electric power system bus and/or non-tracted load is less than braking energy comprises the voltage detected on this electric power system bus and whether is greater than a voltage threshold.
14. braking energy management processs according to claim 12, wherein power for the non-tracted load on this electric power system bus and/or tracted load and comprise:
Power with the predetermined power corresponding to the non-tracted load on this electric power system bus; And
When detecting that this electric power system bus existing another power system is pulled, this energy back feed device is continued to this electric power system bussed supply.
15. braking energy management processs according to claim 12, wherein this converter device comprises inverter, rectifier and the DC bus between inverter and rectifier; This energy back feed device is connected to this rectifier and this electric power system bus.
16. braking energy management processs according to claim 15, wherein detect apparatus for storing electrical energy be filled with electric energy comprise detect this DC bus-bar voltage whether be greater than a voltage threshold.
17. braking energy management processs according to claim 12, wherein provide any time of energy to discharge the energy of this apparatus for storing electrical energy at needs to traction electric machine.
18. braking energy management processs according to claim 17, the power wherein discharging the energy of this apparatus for storing electrical energy carries out according to predetermined curve.
19. 1 kinds of braking energy management processs, be applied to a traction system, multiple converter devices that this traction system comprises electric power system bus, uses to be applicable to each traction electric machine for multiple traction electric machine of drawing multiple power system and the electric power signal that converts this electric power system bus, the method comprises the following steps:
When the arbitrary power system in multiple power system is braked, utilize braking energy that this converter device obtains from traction electric machine by an energy back feed device preferentially to this electric power system bus feedback;
When the energy requirement of the tracted load detected on this electric power system bus and/or non-tracted load is less than braking energy, braking energy is stored into an apparatus for storing electrical energy; And
When detecting that apparatus for storing electrical energy is filled with electric energy, braking energy is imported to an energy-dissipating device consumption.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2010/071039 WO2011113191A1 (en) | 2010-03-15 | 2010-03-15 | Braking energy management system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103153683A CN103153683A (en) | 2013-06-12 |
| CN103153683B true CN103153683B (en) | 2015-08-26 |
Family
ID=44648409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080065461.7A Active CN103153683B (en) | 2010-03-15 | 2010-03-15 | Braking energy management system and control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103153683B (en) |
| WO (1) | WO2011113191A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672348A (en) * | 2017-10-16 | 2019-04-23 | 株洲中车时代电气股份有限公司 | A kind of high-speed maglev train power supply system |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5968518B2 (en) * | 2013-03-06 | 2016-08-10 | 三菱電機株式会社 | Main converter for electric vehicles |
| CN104627004A (en) * | 2014-09-24 | 2015-05-20 | 中国北车集团大连机车车辆有限公司 | Integrated power source for providing power for diesel locomotive auxiliary transmission system and train |
| CN104494449B (en) * | 2014-11-20 | 2017-07-07 | 许继电气股份有限公司 | The intelligent dormancy of modularization metro braking feedback device and rotation control method |
| CN105730251B (en) * | 2014-12-09 | 2018-08-21 | 株洲南车时代电气股份有限公司 | Over-pressed copped wave energy consumption balance control system applied to train |
| CN105699763A (en) * | 2016-03-09 | 2016-06-22 | 苏州市万松电气有限公司 | Acquisition and analysis system and method for energy consumption data of train electrical equipment |
| CN107380187B (en) * | 2016-11-28 | 2019-12-03 | 盾石磁能科技有限责任公司 | Rail traffic regenerating braking energy comprehensive recycling device and method |
| CN109823187B (en) | 2017-11-23 | 2020-12-29 | 株洲中车时代电气股份有限公司 | Electric braking energy feedback system |
| CN109204012A (en) * | 2018-09-03 | 2019-01-15 | 中车大连机车车辆有限公司 | Powered brake control system and rail vehicle for rail vehicle |
| CN110182053B (en) * | 2019-06-04 | 2021-03-12 | 中电建路桥集团有限公司 | Magnetic suspension energy storage flywheel energy braking protection system |
| CN113258662A (en) * | 2021-06-21 | 2021-08-13 | 北京晟科网鼎网络科技有限公司 | Energy distribution method and energy distribution device for electric equipment and electric loader |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19617048C1 (en) * | 1996-04-18 | 1997-07-24 | Elpro Ag | Control method for power regulator of electric motor drives |
| WO1998044623A1 (en) * | 1997-04-03 | 1998-10-08 | Fanuc Ltd | Transformer type converter |
| CN101159425A (en) * | 2007-10-19 | 2008-04-09 | 王武 | Elevator staircase group frequency conversion drive united power supply energy-saving operation method and apparatus |
| CN101249802A (en) * | 2008-03-27 | 2008-08-27 | 上海工程技术大学 | Urban rail traffic vehicle braking energy recovery system |
| CN101376344A (en) * | 2008-09-28 | 2009-03-04 | 东南大学 | Multiple-target integrated control energy-saving method of electric power supply system for subway |
| CN101633322A (en) * | 2009-08-26 | 2010-01-27 | 上海磁浮交通发展有限公司 | Magnetic-suspension tractive power supply system capable of feeding braking energy back to power grid |
-
2010
- 2010-03-15 WO PCT/CN2010/071039 patent/WO2011113191A1/en active Application Filing
- 2010-03-15 CN CN201080065461.7A patent/CN103153683B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19617048C1 (en) * | 1996-04-18 | 1997-07-24 | Elpro Ag | Control method for power regulator of electric motor drives |
| WO1998044623A1 (en) * | 1997-04-03 | 1998-10-08 | Fanuc Ltd | Transformer type converter |
| CN101159425A (en) * | 2007-10-19 | 2008-04-09 | 王武 | Elevator staircase group frequency conversion drive united power supply energy-saving operation method and apparatus |
| CN101249802A (en) * | 2008-03-27 | 2008-08-27 | 上海工程技术大学 | Urban rail traffic vehicle braking energy recovery system |
| CN101376344A (en) * | 2008-09-28 | 2009-03-04 | 东南大学 | Multiple-target integrated control energy-saving method of electric power supply system for subway |
| CN101633322A (en) * | 2009-08-26 | 2010-01-27 | 上海磁浮交通发展有限公司 | Magnetic-suspension tractive power supply system capable of feeding braking energy back to power grid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672348A (en) * | 2017-10-16 | 2019-04-23 | 株洲中车时代电气股份有限公司 | A kind of high-speed maglev train power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011113191A1 (en) | 2011-09-22 |
| CN103153683A (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103153683B (en) | Braking energy management system and control method thereof | |
| CN201901014U (en) | Double-source electric control device for locomotive | |
| EP3030440B1 (en) | Hybrid vehicle | |
| CN105398353B (en) | A kind of rail transit locomotive power-supply system and its control method | |
| CN106428035B (en) | A kind of main circuit system suitable for energy storage type tramcar | |
| CN101249802B (en) | Urban rail traffic vehicle braking energy recovery system | |
| WO2020000843A1 (en) | Optimized energy interconnection system for urban railway train | |
| CN207328441U (en) | A kind of electric locomotive traction system | |
| CN100581869C (en) | Multi-target comprehensive control energy-saving device for subway power supply system | |
| CN103350647A (en) | Motor train unit traction system adopting catenary and energy storing devices for hybrid power supply | |
| CN103496327A (en) | Motor train unit traction system powered by power packs and energy storage devices in mixed mode | |
| CN103496326A (en) | Vehicle-mounted energy storing device and method for electric locomotive and electric vehicle set | |
| WO2019119495A1 (en) | Train traction rescue method and system | |
| WO2014206081A1 (en) | Traction system for motor train unit powered by energy storage device | |
| WO2020019540A1 (en) | Bidirectional high-frequency auxiliary conversion system | |
| CN104527960B (en) | Ship braking energy control system and method | |
| CN102832718B (en) | Control method for vehicle-mounted super capacitor energy storage system for urban rail transit | |
| Shimada et al. | Energy storage system for effective use of regenerative energy in electrified railways | |
| CN107248734B (en) | Closed-loop control system of modularized subway regenerative braking super capacitor energy storage device | |
| CN103407446B (en) | A kind of motor vehicle driven by mixed power chassis energy reproducible and method thereof | |
| CN201833893U (en) | Electric transmission system for subway shunting | |
| CN203427786U (en) | Energy regeneration system of hybrid power vehicle chassis | |
| CN103151806B (en) | Tractive power supply system and method | |
| CN207166151U (en) | A kind of electric power management device and tractive power supply system | |
| CN109768721A (en) | A kind of three-level current transformer control method of intelligence energy in bidirectional flow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SHANGHAI MAGNETIC SUSPENSION COMMUNICATION ENGINEERING TECHNOLOGY RESEARCH CENTE Effective date: 20150608 Owner name: TONGJI UNIVERSITY Free format text: FORMER OWNER: SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO., LTD. Effective date: 20150608 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150608 Address after: 200092 Shanghai City, Yangpu District Siping Road No. 1239 Applicant after: Tongji University Address before: 200000 No. 2520, Shanghai, Longyang Road Applicant before: Shanghai Maglev Transportation Development Co., Ltd. Applicant before: Shanghai Magnetic Suspension Communication Engineering Technology Research Cente |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |