CN106169772A - A kind of energy feedback system based on floating gate threshold value starts control method and control system - Google Patents
A kind of energy feedback system based on floating gate threshold value starts control method and control system Download PDFInfo
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- CN106169772A CN106169772A CN201610638392.3A CN201610638392A CN106169772A CN 106169772 A CN106169772 A CN 106169772A CN 201610638392 A CN201610638392 A CN 201610638392A CN 106169772 A CN106169772 A CN 106169772A
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- H02J3/382—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The invention discloses a kind of energy feedback system based on floating gate threshold value and start control method and control system, control method includes: S1. obtains AC network actual voltage value, direct current network actual voltage value;S2. direct current network floating voltage value and floating gate threshold value are calculated;S3. when direct current network actual voltage value is in non-Light Condition more than floating gate threshold value and electrical network, starting energy feedback system, the most not starting can feedback system;This control system includes measurement module, computing module and startup control module.The present invention has and whether can be in Light Condition by automatic decision electrical network, by arranging floating gate threshold value, can effectively solve to use and under fixing threshold value mode, cause energy feedback system error starting problem because of voltage ripple of power network, reduce unnecessary loss and energy consumption, be effectively improved the economic indicator of whole energy feedback system;And select optimal startup threshold according to net pressure practical situation, can further improve system response time, it is ensured that maximum effect can be played by feedback system.
Description
Technical field
The present invention relates to regenerated energy and can present field, particularly relate to a kind of energy feedback system based on floating gate threshold value and start control
Method processed and control system.
Background technology
The urban track traffic of 21 century will be the green traffic system pursuing energy-conserving and environment-protective.In whole urban track traffic
In system, the accounting of energy consumption of vehicles is typically above the 50% of whole system energy consumption, swift and violent along with urban rail transit technology
Development, the research of the absorption and utilization that produce energy when city rail vehicle is braked by domestic and international each producer gets more and more.
Urban track traffic can present apparatus system circuit theory as it is shown in figure 1, the enabling gate threshold value of device, Yi Jiwen can be presented
The height of pressure value is directly connected to the utilization rate of direct current net voltage.Fixing threshold value can not judge the liter of direct current network voltage
Height is because train braking and produces braking energy, is also because other of AC voltage ripple of power network or direct current network
Load changes and causes, and therefore using fixing threshold value to cause can feedback system error starting.The error starting of device can be led
Enable feedback device directly forms circulation with commutator, causes a large amount of of energy to waste, and adds the loss of current transformer, because of
This, carry out correct startup to energy feedback system and control to have great importance.
Summary of the invention
The technical problem to be solved in the present invention is that the technical problem existed for prior art, and the present invention provides one
Planting can effectively solve to use and cause energy feedback system error starting problem under fixing threshold value mode because of voltage ripple of power network, minimizing sets
Standby unnecessary loss and energy consumption, be effectively improved the economic indicator of whole energy feedback system, improve system response time, it is ensured that can present
System plays the energy feedback system of maximum effect and starts control method and control system.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes is: a kind of based on floating gate threshold value can present system
System starts control method, comprises the steps:
S1. AC network actual voltage value U is obtainedabc, direct current network actual voltage value Ud;
S2. direct current network floating voltage value U is calculatedoWith floating gate threshold value Uf;
S3. as described direct current network actual voltage value UdMore than described floating gate threshold value UfAnd electrical network is in non-Light Condition
Time, start energy feedback system, the most not starting can feedback system.
As a further improvement on the present invention, direct current network floating voltage value U in described step S2oActual by AC network
Magnitude of voltage UabcNo-load voltage ratio conversion according to rectifier transformer draws.
As a further improvement on the present invention, the floating gate threshold value in described step S2 is calculated by formula (1):
In formula (1), UfFor floating gate threshold value, UabcFor AC network actual voltage value, Uabc1Empty for default AC network
Carry magnitude of voltage, UoFor direct current network floating voltage value, UnFor default startup threshold expected value.
As a further improvement on the present invention, in described step S3, electrical network is in Light Condition and judges according to formula (2), formula
(2) judge when setting up that electrical network is in Light Condition,
In formula (2), UdFor direct current network actual voltage value, UabcFor AC network actual voltage value, Uabc1For default friendship
Stream electrical network floating voltage value, UoFor direct current network floating voltage value, the zero load that X is default judges threshold value.
As a further improvement on the present invention, when the net of direct current network presses grade to be DC1500V, described default zero load
Judge that the span of threshold value X is as [20,40].
As a further improvement on the present invention, after the feedback system of startup energy described in described step S3 is the time that time delay is preset
Starting can feedback system.
A kind of energy feedback system based on floating gate threshold value starts control system, including:
Measurement module: be used for obtaining AC network actual voltage value Uabc, direct current network actual voltage value Ud;
Computing module: be used for calculating direct current network floating voltage value UoWith floating gate threshold value Uf;
Start control module: for as described direct current network actual voltage value UdMore than described floating gate threshold value UfAnd electrical network
When being in non-Light Condition, starting energy feedback system, the most not starting can feedback system.
Compared with prior art, it is an advantage of the current invention that: the present invention has and whether can be in zero load by automatic decision electrical network
State, and by arranging floating gate threshold value, can effectively solve to use under fixing threshold value mode and cause because of voltage ripple of power network
Energy feedback system error starting problem, reduces the unnecessary loss of equipment and energy consumption, is effectively improved the economic indicator of whole energy feedback system;
Additionally by the mode of floating threshold, select optimal startup threshold according to net pressure practical situation, improve system response further
Speed, it is ensured that maximum effect can be played by feedback system.
Accompanying drawing explanation
Fig. 1 is can feedback system circuit topology schematic diagram.
Fig. 2 is specific embodiment of the invention flow chart.
Fig. 3 is specific embodiment of the invention logical schematic.
Fig. 4 is specific embodiment of the invention structural representation.
Detailed description of the invention
Below in conjunction with Figure of description and concrete preferred embodiment, the invention will be further described, but the most therefore and
Limit the scope of the invention.
As shown in Figures 2 and 3, the present embodiment is based on floating gate threshold value can start control method, including as follows by feedback system
Step: S1. obtains AC network actual voltage value Uabc, direct current network actual voltage value Ud;S2. direct current network zero load electricity is calculated
Pressure value UoWith floating gate threshold value Uf;S3. as direct current network actual voltage value UdMore than floating gate threshold value UfAnd electrical network is in non-zero load
During state, starting energy feedback system, the most not starting can feedback system.
In the present embodiment, direct current network floating voltage value U in step S2oBy AC network actual voltage value UabcAccording to
The no-load voltage ratio conversion of rectifier transformer draws.Floating gate threshold value in step S2 is calculated by formula (1):
In formula (1), UfFor floating gate threshold value, UabcFor AC network actual voltage value, Uabc1Empty for default AC network
Carry magnitude of voltage, UoFor direct current network floating voltage value, UnFor default startup threshold expected value.In the present embodiment, that presets opens
Dynamic threshold value is the threshold value set by host computer.
In the present embodiment, in step S3, electrical network is in Light Condition and judges according to formula (2), judges electricity when formula (2) is set up
Net is in Light Condition,
In formula (2), UdFor direct current network actual voltage value, UabcFor AC network actual voltage value, Uabc1For default friendship
Stream electrical network floating voltage value, UoFor direct current network floating voltage value, the zero load that X is default judges threshold value.When direct current network
Net pressure grade is when being DC1500V, and the default unloaded span judging threshold value X is as [20,40].Step S3 starts and can present
System is startup energy feedback system after the time that time delay is preset.In the present embodiment, delay time is set to 100 milliseconds.
In the present embodiment, verifying floating gate threshold value with an instantiation, the AC network of municipal rail train is 35kV
Electrical network, i.e. Uabc=35000V, obtaining direct current network floating voltage value according to the no-load voltage ratio conversion of rectifier transformer is DC1670V, i.e.
Uo=1670V, threshold value set by host computer is 1750V, i.e. Un=1750V, direct current network is DC1500V electrical network, AC network
Floating voltage value is 35.8kV, i.e. Uabc1=35800V, certainly, AC network floating voltage value can be carried out according to practical situation
Adjust.Considering that the load in AC network evening on daytime is different, electrical network has ± fluctuation of 5%, substitute into formula (1), can be calculated
The fluctuation range of floating gate threshold value is 1666.5≤Uf≤ 1833.5, the domain of walker of floating gate threshold value has reached 167V, can expire
Foot power network fluctuation requirement, it is possible to effectively prevent the error starting of energy feedback system.
The present invention has and whether can be in Light Condition by automatic decision electrical network, and by arranging floating gate threshold value, can be effective
Solve to use and cause energy feedback system error starting problem because of voltage ripple of power network under fixing threshold value mode, reduce equipment unnecessary
Loss and energy consumption, be effectively improved whole can the economic indicator of feedback system;Additionally by the mode of floating threshold, according to net compacting
Border situation selects optimal startup threshold, improves system response time further, it is ensured that can play maximum effect by feedback system.
As shown in Figure 4, the present embodiment is based on floating gate threshold value can feedback system startup control system include: measurement module:
For obtaining AC network actual voltage value Uabc, direct current network actual voltage value Ud;Computing module: be used for calculating direct current network
Floating voltage value UoWith floating gate threshold value Uf;Start control module: for as direct current network actual voltage value UdMore than floating threshold
Value UfAnd electrical network is when being in non-Light Condition, start can feedback system, the most not starting can feedback system.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention.Although the present invention
Disclosed above with preferred embodiment, but it is not limited to the present invention.Therefore, every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should fall
In the range of technical solution of the present invention protection.
Claims (7)
1. an energy feedback system based on floating gate threshold value starts control method, it is characterised in that comprise the steps:
S1. AC network actual voltage value U is obtainedabc, direct current network actual voltage value Ud;
S2. direct current network floating voltage value U is calculatedoWith floating gate threshold value Uf;
S3. as described direct current network actual voltage value UdMore than described floating gate threshold value UfAnd electrical network is when being in non-Light Condition, open
Kinetic energy feedback system, the most not starting can feedback system.
Energy feedback system based on floating gate threshold value the most according to claim 1 starts control method, it is characterised in that: described
Direct current network floating voltage value U in step S2oBy AC network actual voltage value UabcNo-load voltage ratio according to rectifier transformer converts
Go out.
Energy feedback system based on floating gate threshold value the most according to claim 2 starts control method, it is characterised in that: described
Floating gate threshold value in step S2 is calculated by formula (1):
In formula (1), UfFor floating gate threshold value, UabcFor AC network actual voltage value, Uabc1For default AC network zero load electricity
Pressure value, UoFor direct current network floating voltage value, UnFor default startup threshold expected value.
Energy feedback system based on floating gate threshold value the most according to claim 3 starts control method, it is characterised in that: described
In step S3, electrical network is in Light Condition and judges according to formula (2), judges that electrical network is in Light Condition when formula (2) is set up,
In formula (2), UdFor direct current network actual voltage value, UabcFor AC network actual voltage value, Uabc1For default alternating current
Net floating voltage value, UoFor direct current network floating voltage value, the zero load that X is default judges threshold value.
Energy feedback system based on floating gate threshold value the most according to claim 4 starts control method, it is characterised in that: when directly
The net pressure grade of stream electrical network is when being DC1500V, and the described default unloaded span judging threshold value X is as [20,40].
Energy feedback system based on floating gate threshold value the most according to claim 5 starts control method, it is characterised in that: described
The feedback system of startup energy described in step S3 is startup energy feedback system after the time that time delay is preset.
7. an energy feedback system based on floating gate threshold value starts control system, it is characterised in that including:
Measurement module: be used for obtaining AC network actual voltage value Uabc, direct current network actual voltage value Ud;
Computing module: be used for calculating direct current network floating voltage value UoWith floating gate threshold value Uf;
Start control module: for as described direct current network actual voltage value UdMore than described floating gate threshold value UfAnd electrical network is in
During non-Light Condition, starting energy feedback system, the most not starting can feedback system.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107264340A (en) * | 2017-06-26 | 2017-10-20 | 厦门科华恒盛股份有限公司 | A kind of method for being used to select the control strategy of energy feedback system current transformer |
CN107776438A (en) * | 2017-09-20 | 2018-03-09 | 北京市轨道交通建设管理有限公司 | The anti-loop process of urban track traffic traction power supply and system |
CN109664768A (en) * | 2017-10-13 | 2019-04-23 | 株洲中车时代电气股份有限公司 | Over-voltage copped wave energy consumption balance control method, system, device and readable storage medium storing program for executing |
CN110034556A (en) * | 2019-03-27 | 2019-07-19 | 沈阳微控新能源技术有限公司 | Regenerating braking energy recycling and control method, system and device |
CN110654272A (en) * | 2019-09-30 | 2020-01-07 | 南京亚派科技股份有限公司 | Method for preventing false start between adjacent stations of subway energy feedback device |
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CN105449648A (en) * | 2015-11-19 | 2016-03-30 | 南方电网科学研究院有限责任公司 | Optimization method for traveling wave protection characteristic quantity floating threshold of extra-high voltage direct current line |
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CN101058296A (en) * | 2006-04-30 | 2007-10-24 | 湘潭市恒信电气有限公司 | Input judgement method and device for regeneration braking absorbing instrument |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN107264340A (en) * | 2017-06-26 | 2017-10-20 | 厦门科华恒盛股份有限公司 | A kind of method for being used to select the control strategy of energy feedback system current transformer |
CN107264340B (en) * | 2017-06-26 | 2019-05-24 | 厦门科华恒盛股份有限公司 | A method of for selecting the control strategy of energy feedback system current transformer |
CN107776438A (en) * | 2017-09-20 | 2018-03-09 | 北京市轨道交通建设管理有限公司 | The anti-loop process of urban track traffic traction power supply and system |
CN107776438B (en) * | 2017-09-20 | 2019-03-19 | 北京市轨道交通建设管理有限公司 | The anti-loop process of urban track traffic traction power supply and system |
CN109664768A (en) * | 2017-10-13 | 2019-04-23 | 株洲中车时代电气股份有限公司 | Over-voltage copped wave energy consumption balance control method, system, device and readable storage medium storing program for executing |
CN109664768B (en) * | 2017-10-13 | 2021-06-25 | 株洲中车时代电气股份有限公司 | Overvoltage chopping energy consumption balance control method, system and device and readable storage medium |
CN110034556A (en) * | 2019-03-27 | 2019-07-19 | 沈阳微控新能源技术有限公司 | Regenerating braking energy recycling and control method, system and device |
CN110654272A (en) * | 2019-09-30 | 2020-01-07 | 南京亚派科技股份有限公司 | Method for preventing false start between adjacent stations of subway energy feedback device |
CN110654272B (en) * | 2019-09-30 | 2022-09-16 | 南京亚派科技股份有限公司 | Method for preventing false start between adjacent stations of subway energy feedback device |
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