CN106877479A - A kind of vehicle-mounted super capacitor energy-storage system control method - Google Patents
A kind of vehicle-mounted super capacitor energy-storage system control method Download PDFInfo
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- CN106877479A CN106877479A CN201510913187.9A CN201510913187A CN106877479A CN 106877479 A CN106877479 A CN 106877479A CN 201510913187 A CN201510913187 A CN 201510913187A CN 106877479 A CN106877479 A CN 106877479A
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- super capacitor
- storage system
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- energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of vehicle-mounted super capacitor energy-storage system control method, including the correction of bidirectional DC/DC converter, current closed-loop, three parts of current indirect control.Method proposed by the present invention can brake hypodynamic problem at a high speed for train braking failure, improvement train, propose a kind of vehicle-mounted super capacitor energy-storage system indirect current energy management control strategy, the fluctuation of DC bus-bar voltage at pantograph can be suppressed by this control strategy, improve train traction and braking ability, prevent regeneration from failing, save running train energy consumption.
Description
Technical field
The present invention relates to a kind of super capacitor energy-storage system, more particularly to a kind of vehicle-mounted super capacitor energy-storage system control method.
Background technology
Compared with the modes of transportation such as road, aviation, rail vehicle transportation has the remarkable advantages such as big freight volume, timing, safe and environment-friendly, energy-conservation.Environmental protection is advocated in the whole world, is prevented today of global warming, track traffic environmental protection, the advantage of energy-conservation are increasingly valued by people, and greatly developing track public transport has turned into the common recognition of countries in the world.Rail traffic vehicles are using after AC Drive Technology, regenerative braking turns into the mode of braking that train is commonly used, because other trains for being in traction state that regenerating braking energy is available in identical power supply interval are utilized, the operation energy consumption of train is reduce further, advantage of the track traffic in terms of energy-saving run is protruded all the more.However, the use of the premise of regenerative braking being there must be enough loads to carry out absorption and regeneration energy on circuit, permissible value otherwise is increased to over regard to Rongcheng pantograph voltage, trigger main circuit to disconnect, cause regenerative braking to fail.
In recent years, with secondary cell, flywheel, super capacitor（EDLC）Deng the development of energy storage technology, train braking failure how is solved using energy storage technology, improves the extensive concern that train high speed brake force deficiency obtains world's track traffic circle.
The content of the invention
Hypodynamic problem is braked at a high speed in order to overcome train braking to fail, improve train, and the present invention proposes a kind of vehicle-mounted super capacitor energy-storage system control method.
The technical solution adopted for the present invention to solve the technical problems is：
Braking energy feature and super capacitor self character by studying municipal rail train of the invention, analyze characteristics match relation therebetween, propose a kind of based on vehicle-mounted super capacitor system current indirect control method, gauze voltage pulsation can effectively be suppressed by the control method, prevent regenerative braking from failing, save energy consumption in train journey.
Vehicle-mounted super capacitor energy-storage system control method includes：Bidirectional DC/DC converter, current closed-loop correction, three parts of current indirect control.
After the bidirectional DC/DC converter utilization state space average method is modeled to the buck chopper and boost chopper of bi-directional DC-DC converter, unified model is obtained.
The current closed-loop correction uses PI controllers, and open current loop transmission function is corrected into a first order inertial loop, and super capacitor electric current can be made to obtain good stability, rapidity.
The current indirect control can suppress Voltage Drop at pantograph, improve its acceleration, prevents regeneration failure and improve its electric braking performance.
The beneficial effects of the invention are as follows：Hypodynamic problem is braked for train braking failure, improvement train at a high speed, propose a kind of vehicle-mounted super capacitor energy-storage system indirect current energy management control strategy, the fluctuation of DC bus-bar voltage at pantograph can be suppressed by this control strategy, improve train traction and braking ability, prevent regeneration from failing, save running train energy consumption.
Brief description of the drawings
The vehicle-mounted super capacitor energy-storage system architectures of Fig. 1.
The topological structure of Fig. 2 bidirectional DC-DC converters.
Fig. 3 current indirect control block diagrams.
Specific embodiment
In Fig. 1, mainly it is made up of two parts：One is energy converter bidirectional DC-DC converter；Two is ultracapacitor group.In order that energy reasonable distribution, both are using annexation in parallel, the control of bidirectional DC-DC converter and the control of traction invertor are separate, and on the basis of original Train Control strategy is not changed, super capacitor energy storage device can just be used on existing municipal rail train.It is gauze electric current；For the electric current that train traction or regenerative braking need；It is the output current of energy-storage system,It is inverter front voltage；It is the front voltage of energy-storage system, and it is full；It is super capacitor terminal voltage；DeviceIt is disconnecting switch, when super capacitor is standby,Disconnect.
Bi-directional DC-DC converter and ultracapacitor group are constituted, and the buck chopper and boost chopper of bi-directional DC-DC converter are modeled respectively with reference to both characteristic utilization state space average methods, finally give unified Controlling model.In Fig. 2, whereinIt is the inductive current connected with super capacitor, withIt is identical；It is super-capacitor voltage,It is the voltage in super capacitor internal resistance；It is super capacitor terminal voltage；It is DC side terminal voltage；It is energy storage inductor,It is super capacitor capacity.
In electric current correction link, the intrinsic parameter of response time of electric current only to system is related,The internal resistance of value and super capacitor mainly decide the response speed and overshoot of system, therefore can make, obtainValue, then open current loop transmission function can be corrected to a first order inertial loop, super capacitor electric current can be made to obtain good stability, rapidity.
In Fig. 3,Given way be to be given indirectly by controlling gauze electric current, the fiducial value between gauze electric current and given gauze electric current is determinedThreshold value.It is ensured that super capacitor energy-storage system is by the energy management strategies correct operation for designing on the basis of respective logic condition is met.Limiter A：The main threshold value that decide super capacitor energy-storage system acting voltage.Limiter B：The higher limit of the charging and discharging currents of super capacitor is determined, when charging and discharging currents are more than higher limit, then super capacitor just carries out discharge and recharge with higher limit, the purpose of protection super capacitor is reached.Limiter C：Determine super capacitor upper voltage limit value, that is, SOC limits value, when super capacitor SOC electric discharge when close to 0.25 when, by control kc reduce discharge current, until 0；When super capacitor SOC is in charging close to 0.95, same control kc reduces charging current, reaches the purpose of protection super capacitor.
Claims (4)
1. a kind of vehicle-mounted super capacitor energy-storage system control method, it is characterised in that：Including bidirectional DC/DC converter, current closed-loop correction, three parts of current indirect control.
2. vehicle-mounted super capacitor energy-storage system control method as claimed in claim 1, it is characterized in that the bidirectional DC/DC converter is utilization state space average method the buck chopper and boost chopper of bidirectional DC-DC converter are modeled after, obtain unified model.
3. vehicle-mounted super capacitor energy-storage system control method as claimed in claim 1, it is characterised in that the current closed-loop correction uses PI controllers, and super capacitor electric current can be made to obtain good stability, rapidity.
4. vehicle-mounted super capacitor energy-storage system control method as claimed in claim 1, it is characterized in that the current indirect control contains 3 limiters, Voltage Drop at pantograph can be suppressed, improved its acceleration, prevented regeneration failure and improve its electric braking performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510913187.9A CN106877479A (en) | 2015-12-11 | 2015-12-11 | A kind of vehicle-mounted super capacitor energy-storage system control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510913187.9A CN106877479A (en) | 2015-12-11 | 2015-12-11 | A kind of vehicle-mounted super capacitor energy-storage system control method |
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| CN106877479A true CN106877479A (en) | 2017-06-20 |
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| CN201510913187.9A Pending CN106877479A (en) | 2015-12-11 | 2015-12-11 | A kind of vehicle-mounted super capacitor energy-storage system control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107895960A (en) * | 2017-11-01 | 2018-04-10 | 北京交通大学长三角研究院 | City rail traffic ground type super capacitor energy storage system energy management method based on intensified learning |
| CN109586389A (en) * | 2018-10-31 | 2019-04-05 | 北京北交新能科技有限公司 | A kind of vehicle-mounted mixed energy storage system energy control strategy |
| CN109617207A (en) * | 2018-12-12 | 2019-04-12 | 北京交通大学 | Vehicle-mounted super capacitor tandem type topological structure and the control device of the structure, method |
| CN109795375A (en) * | 2019-02-26 | 2019-05-24 | 中铁第四勘察设计院集团有限公司 | A kind of train regenerating brake control method and system |
| CN109830974A (en) * | 2019-01-15 | 2019-05-31 | 国网山东省电力公司电力科学研究院 | A kind of battery dynamic group system and its progress control method |
-
2015
- 2015-12-11 CN CN201510913187.9A patent/CN106877479A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107895960A (en) * | 2017-11-01 | 2018-04-10 | 北京交通大学长三角研究院 | City rail traffic ground type super capacitor energy storage system energy management method based on intensified learning |
| CN107895960B (en) * | 2017-11-01 | 2020-03-17 | 北京交通大学长三角研究院 | Energy management method of urban rail transit energy storage system based on reinforcement learning |
| CN109586389A (en) * | 2018-10-31 | 2019-04-05 | 北京北交新能科技有限公司 | A kind of vehicle-mounted mixed energy storage system energy control strategy |
| CN109617207A (en) * | 2018-12-12 | 2019-04-12 | 北京交通大学 | Vehicle-mounted super capacitor tandem type topological structure and the control device of the structure, method |
| CN109617207B (en) * | 2018-12-12 | 2021-04-06 | 北京交通大学 | Vehicle-mounted super capacitor series topology structure and control device and method thereof |
| CN109830974A (en) * | 2019-01-15 | 2019-05-31 | 国网山东省电力公司电力科学研究院 | A kind of battery dynamic group system and its progress control method |
| CN109795375A (en) * | 2019-02-26 | 2019-05-24 | 中铁第四勘察设计院集团有限公司 | A kind of train regenerating brake control method and system |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |
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| WD01 | Invention patent application deemed withdrawn after publication |