CN105449726B - The current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device - Google Patents
The current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device Download PDFInfo
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- CN105449726B CN105449726B CN201511015523.4A CN201511015523A CN105449726B CN 105449726 B CN105449726 B CN 105449726B CN 201511015523 A CN201511015523 A CN 201511015523A CN 105449726 B CN105449726 B CN 105449726B
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- bidirectional variable
- type feedback
- feedback device
- traction rectifier
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007667 floating Methods 0.000 claims abstract description 26
- 238000007665 sagging Methods 0.000 claims abstract description 15
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 230000003137 locomotive effect Effects 0.000 description 7
- 230000001172 regenerating effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
Classifications
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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
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
-
- 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
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- Rectifiers (AREA)
Abstract
The present invention relates to Bidirectional variable-flow type feedback device and the current-sharing control method of traction rectifier device, this method comprises the following steps：1) the floating voltage value and equivalent internal resistance of traction rectifier device are obtained, so as to obtain the voltage of traction rectifier device and the relation of electric current；2) it is that Bidirectional variable-flow type feedback device sets floating voltage value according to the floating voltage value of traction rectifier device；3) according to the equivalent internal resistance of traction rectifier device, the sagging coefficient of Bidirectional variable-flow type feedback device is set, the equivalent internal resistance of Bidirectional variable-flow type feedback device is consistently equal to the equivalent internal resistance of traction rectifier device；4) Bidirectional variable-flow type feedback device is underground engines traction power supply according to the floating voltage value and sagging coefficient of setting.This method is without hardware modifications, without increasing extra cost, and the sharing control of Bidirectional variable-flow type feedback device and traction rectifier device is only reached by the control algolithm of software, improves the life-span of Bidirectional variable-flow type feedback device and traction rectifier device.
Description
Technical field
The invention belongs to subway regenerative braking energy feedback field, and in particular to Bidirectional variable-flow type feedback device is whole with drawing
Flow the current-sharing control method of device.
Background technology
With developing rapidly for national economy, low-carbon environment-friendly, green energy resource are more and more advocated.Urban track traffic is fast
Hail exhibition, subway regenerative braking feedback current transformer in the way of inversion feed-back parallel network by underground engines skidding when produce it is many
Complementary energy is fed back to AC network, plays the advantage of subway regenerative braking, with low-carbon energy-saving, environmental protection, reliable and stable, throwing
The low outstanding advantage of money, is the developing direction that following subway regenerating braking energy absorbs.
Subway feedback current transformer belongs to Three-phase PWM Voltage Rectifier in itself, PWM rectifier have energy two-way transmission and
The controllable advantage of power factor, therefore subway feedback current transformer can be not only realized energy inversion when subway locomotive brake extremely
AC network, by AC rectification is underground engines traction power supply when can also work as subway locomotive traction.It is two-way during locomotive traction
Flow-changeable feedback device, simultaneously to locomotive power supply, because both internal resistances are different, inevitably results in uneven stream with traction rectifier device,
When even serious circulation is produced between Bidirectional variable-flow type feedback device and traction rectifier device.Bidirectional variable-flow type feedback device and traction
The tractive power supply system schematic diagram of rectifier is as shown in Figure 1.
The content of the invention
The invention provides Bidirectional variable-flow type feedback device and the current-sharing control method of traction rectifier device, to solve two-way change
When flow pattern feedback device gives locomotive power supply simultaneously with traction rectifier device, produce circulation therebetween and reduce Bidirectional variable-flow type feedback
The problem of device is with traction rectifier device service life.
In order to solve the above technical problems, the sharing control side of the Bidirectional variable-flow type feedback device of the present invention and traction rectifier device
Method comprises the following steps：
1) the floating voltage value and equivalent internal resistance of traction rectifier device are obtained, so as to obtain the voltage and electric current of traction rectifier device
Relation；
2) it is that Bidirectional variable-flow type feedback device sets floating voltage value according to the floating voltage value of traction rectifier device；
3) according to the equivalent internal resistance of traction rectifier device, the sagging coefficient of Bidirectional variable-flow type feedback device is set, makes two-way change
The equivalent internal resistance of flow pattern feedback device is consistently equal to the equivalent internal resistance of traction rectifier device；
4) Bidirectional variable-flow type feedback device is underground engines traction power supply according to the floating voltage value and sagging coefficient of setting.
Step 3) in the droop control that uses to be segmented droop control, according to traction rectifier device different phase it is equivalent in
Resistance, sets Bidirectional variable-flow type feedback device in the sagging coefficient in correspondence stage, makes the equivalent internal resistance of Bidirectional variable-flow type feedback device
It is constantly equal with the equivalent internal resistance of traction rectifier device.
The floating voltage value of the Bidirectional variable-flow type feedback device is not less than the floating voltage value of traction rectifier device.
It is real with reference to the actual conditions of Bidirectional variable-flow type feedback device and traction rectifier device simultaneously for underground engines traction power supply
When the sagging coefficient of Bidirectional variable-flow type feedback device is adjusted, to improve equal mobility.
The Bidirectional variable-flow type feedback device of the present invention is with the current-sharing control method of traction rectifier device according to traction rectifier device
Floating voltage and equivalent internal resistance, the control to the floating voltage and equivalent internal resistance of Bidirectional variable-flow type feedback device, i.e. droop control,
Realize that the stream with traction rectifier device is run.This method is without hardware modifications, without increasing extra cost, only by under software
Vertical control algolithm reaches the sharing control of Bidirectional variable-flow type feedback device and traction rectifier device, improves Bidirectional variable-flow type feedback device
With the life-span of traction rectifier device.
Brief description of the drawings
Fig. 1 is the tractive power supply system schematic diagram of Bidirectional variable-flow type feedback device and traction rectifier device；
Fig. 2 is the sharing control policy map of Bidirectional variable-flow type feedback device and traction rectifier device.
Embodiment
Below in conjunction with the accompanying drawings, technical scheme is further described in detail.
The current-sharing control method of the Bidirectional variable-flow type feedback device and traction rectifier device of the present embodiment comprises the following steps：
1) the floating voltage value and equivalent internal resistance of traction rectifier device are obtained, so as to obtain the voltage and electric current of traction rectifier device
Relation；
2) it is that Bidirectional variable-flow type feedback device sets floating voltage value according to the floating voltage value of traction rectifier device；
3) according to the equivalent internal resistance of traction rectifier device, the sagging coefficient of Bidirectional variable-flow type feedback device is set, makes two-way change
The equivalent internal resistance of flow pattern feedback device is consistently equal to the equivalent internal resistance of traction rectifier device；
4) Bidirectional variable-flow type feedback device is underground engines traction power supply according to the floating voltage value and sagging coefficient of setting.
Step 3) in the droop control that uses to be segmented droop control, according to traction rectifier device different phase it is equivalent in
Resistance, sets Bidirectional variable-flow type feedback device in the sagging coefficient in correspondence stage, makes the equivalent internal resistance of Bidirectional variable-flow type feedback device
It is constantly equal with the equivalent internal resistance of traction rectifier device.
The floating voltage value of Bidirectional variable-flow type feedback device is not less than the floating voltage value of traction rectifier device.
Further, pull test can be carried out, Bidirectional variable-flow type feedback device and traction rectifier device lead for underground engines simultaneously
Draw power supply, situation is flowed in contrast, further finely tunes the sagging coefficient of Bidirectional variable-flow type feedback device, so that equal mobility is more
It is high.
During locomotive traction, Bidirectional variable-flow type feedback device gives locomotive power supply simultaneously with traction rectifier device, due to traction rectifier
The floating voltage and equivalent internal resistance of device be it is uncontrollable, and the floating voltage and equivalent internal resistance of Bidirectional variable-flow type feedback device be can
Control, therefore by the droop control to Bidirectional variable-flow type feedback device, realize that the stream with traction rectifier device is run.Wherein,
Droop control algorithm is common technology means in the prior art, is no longer described in detail here.This method is essentially consisted in by regulation
Sagging coefficient controls the equivalent internal resistance of Bidirectional variable-flow type feedback device, makes the equivalent internal resistance of Bidirectional variable-flow type feedback device all the time
It is identical with the equivalent internal resistance of traction rectifier device, so as to realize the stream operation with traction rectifier device.This method without hardware modifications,
Extra cost need not be increased, the stream of Bidirectional variable-flow type feedback device and traction rectifier device is only reached by the control algolithm of software
Control, improves the life-span of Bidirectional variable-flow type feedback device and traction rectifier device.
Claims (4)
1. the current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device, it is characterised in that this method includes as follows
Step：
1) the floating voltage value and equivalent internal resistance of traction rectifier device are obtained, so as to obtain the voltage of traction rectifier device and the pass of electric current
System；
2) it is that Bidirectional variable-flow type feedback device sets floating voltage value according to the floating voltage value of traction rectifier device；
3) according to the equivalent internal resistance of traction rectifier device, the sagging coefficient of Bidirectional variable-flow type feedback device is set, makes Bidirectional variable-flow type
The equivalent internal resistance of feedback device is consistently equal to the equivalent internal resistance of traction rectifier device；
4) Bidirectional variable-flow type feedback device is underground engines traction power supply according to the floating voltage value and sagging coefficient of setting.
2. the current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device according to claim 1, its feature exists
In step 3) in the droop control that uses to be segmented droop control, according to traction rectifier device different phase equivalent internal resistance, if
Sagging coefficient of the Bidirectional variable-flow type feedback device in the correspondence stage is put, makes equivalent internal resistance and the traction of Bidirectional variable-flow type feedback device
The equivalent internal resistance of rectifier is constantly equal.
3. the current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device according to claim 1, its feature exists
In the floating voltage value of the Bidirectional variable-flow type feedback device is not less than the floating voltage value of traction rectifier device.
4. the current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device according to claim 2, its feature exists
In right in real time with reference to the actual conditions of Bidirectional variable-flow type feedback device and traction rectifier device simultaneously for underground engines traction power supply
The sagging coefficient of Bidirectional variable-flow type feedback device is adjusted, to improve equal mobility.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015523.4A CN105449726B (en) | 2015-12-29 | 2015-12-29 | The current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device |
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| CN201511015523.4A CN105449726B (en) | 2015-12-29 | 2015-12-29 | The current-sharing control method of Bidirectional variable-flow type feedback device and traction rectifier device |
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| CN105449726A CN105449726A (en) | 2016-03-30 |
| CN105449726B true CN105449726B (en) | 2017-11-07 |
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| CN106364335B (en) * | 2016-09-30 | 2018-11-27 | 西安许继电力电子技术有限公司 | A kind of sagging coefficient automatic adjusting device and method of Bidirectional variable-flow type feedback device |
| CN114221333A (en) * | 2021-12-10 | 2022-03-22 | 江苏晨大电气股份有限公司 | Intelligent network voltage control method, device and system for rail transit bidirectional converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008049536B3 (en) * | 2008-09-29 | 2010-06-24 | Siemens Aktiengesellschaft | Method for controlling rectifier circuit in rolling mill, involves interrupting ignition pulse sequence for beginning of commutation periods in mains phases for duration of pulse rest period during regenerative operation of circuit |
| CN102394557A (en) * | 2011-09-06 | 2012-03-28 | 清华大学 | Hybrid parallel type high-voltage direct current traction power supply current transformer and control method thereof |
| CN103236717A (en) * | 2013-04-12 | 2013-08-07 | 湖南大学 | Synchronous reference voltage based multiple PWM (pulse width modulation) converter parallel operation control method |
-
2015
- 2015-12-29 CN CN201511015523.4A patent/CN105449726B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008049536B3 (en) * | 2008-09-29 | 2010-06-24 | Siemens Aktiengesellschaft | Method for controlling rectifier circuit in rolling mill, involves interrupting ignition pulse sequence for beginning of commutation periods in mains phases for duration of pulse rest period during regenerative operation of circuit |
| CN102394557A (en) * | 2011-09-06 | 2012-03-28 | 清华大学 | Hybrid parallel type high-voltage direct current traction power supply current transformer and control method thereof |
| CN103236717A (en) * | 2013-04-12 | 2013-08-07 | 湖南大学 | Synchronous reference voltage based multiple PWM (pulse width modulation) converter parallel operation control method |
Non-Patent Citations (1)
| Title |
|---|
| 地铁车辆逆变型再生制动能量回馈方案与装置的研究;夏景辉等;《城市轨道交通研究》;20130630(第6期);第42-45页 * |
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