CN106452134A - Control device and method for dynamic current sharing of rectifier bridge - Google Patents
Control device and method for dynamic current sharing of rectifier bridge Download PDFInfo
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- CN106452134A CN106452134A CN201610902091.7A CN201610902091A CN106452134A CN 106452134 A CN106452134 A CN 106452134A CN 201610902091 A CN201610902091 A CN 201610902091A CN 106452134 A CN106452134 A CN 106452134A
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- Prior art keywords
- rectifier bridge
- current
- bridge controller
- rectification
- rectification bridge
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Classifications
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- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without 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
- H02M7/217—Conversion of ac power input into dc power output without 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
- H02M7/219—Conversion of ac power input into dc power output without 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 in a bridge configuration
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without 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
- H02M7/217—Conversion of ac power input into dc power output without 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
- H02M7/23—Conversion of ac power input into dc power output without 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 arranged for operation in parallel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a control device for dynamic current sharing of a rectifier bridge. The control device comprises a regulator and at least two sets of control objects, wherein each set of control object comprises a rectifier bridge controller, the rectifier bridge and a current sensor, wherein an input end of the current sensor is connected with the rectifier bridge and an output end of the current sensor is connected with the input end of the rectifier bridge controller; the regulator is connected with the rectifier bridge controllers in all the control objects. A digital current sharing technique is utilized by the control device to realize the current sharing among the parallel controllable silicon of the rectifier bridge arm. The invention also discloses a control method for the dynamic current sharing of the rectifier bridge.
Description
Technical field
The invention belongs to electrical engineering technical field, particularly to a kind of rectifier bridge dynamic current equalizing control device and controlling party
Method.
Background technology
Excitation system is the important component part of synchronous generator, and it provides DC current to turn to set up to generator amature
Sub- magnetic field, by adjusting the output current of excitation system come regulator generator set end voltage and output reactive power.Therefore, excitation
The performance of system directly affects the operation characteristic of electromotor, and excellent excitation system can ensure that the reliable and stable operation of electromotor.
Excitation system is generally made up of regulation, rectification and demagnetization three part, and wherein rectifying part is generally by multiple controllable silicons
Rectifier bridge composes in parallel, and unit capacity is bigger, and quantity in parallel is more.During multiple rectifier bridge parallel running, between bridge
It is not identical that difference leads to each rectifier bridge output current.Generally these differences include thyristor on-state voltage drop, fast
Molten resistance, impedance loop etc..Rectification load per axle in parallel is unequal, shows as each brachium pontis parallel connection silicon controlled current capacity uneven
Deng.The controllable silicon of its medium-term and long-term heavy load, its service life can greatly shorten, and when reaching its service life, this controllable silicon moves back
Go out to run, remaining controllable silicon load so can be led to increase, accelerate remaining silicon controlled aging speed again, bring chain anti-
Should.
All Flow Technique as solve this problem and propose, and the purpose of this technology is to try to make the electric current of rectifier bridge band in parallel
Load is consistent.Conventional current equalizing method is mainly focused on the impedance between balanced loop, mainly passes through controllable silicon parameter coupling, loop
The methods such as circuit equalization, loop tandem reactor are realized, and wherein, controllable silicon parameter can change in run duration, all stream effect
Fruit cannot ensure；Return lead equalization realizes impedance matching by different cable lengths only in the case of cable connection, but
It is that Large-scale machine set generally adopts copper bar to connect；Loop tandem reactor is to install regulative reactance additional in the DC side of each rectifier bridge
Device, but install loaded down with trivial details, take cabinet space, and loop parameter can change during use, through needing weight after a while
New adjustment.And above-mentioned several equal Flow Technique can only realize all stream of rectifier bridge outlet chamber it is impossible between brachium pontis parallel connection controllable silicon
Realize all flowing.
Content of the invention
The purpose of the present invention, is to provide a kind of rectifier bridge dynamic current equalizing control device and control method, and it is using numeral
All Flow Technique, realize all stream between rectifier bridge brachium pontis parallel connection controllable silicon.
In order to reach above-mentioned purpose, the solution of the present invention is：
A kind of rectifier bridge dynamic current equalizing control device, including actuator and at least two groups control objects, each group of control is right
As all including rectification bridge controller, rectifier bridge and current sensor, wherein, the input of current sensor is connected with rectifier bridge,
The outfan of current sensor is connected with the input of rectification bridge controller；Rectifier bridge control in actuator and all control objects
Device processed connects.
Above-mentioned current sensor is arranged on the three-phase alternating current input side of rectifier bridge.
The outfan of above-mentioned current sensor connects the analog quantity sampling input interface of rectification bridge controller.
It is attached by optical fiber or netting twine between the rectification bridge controller of above-mentioned each control object.
It is attached by CAN communication network between the rectification bridge controller of above-mentioned each control object.
It is attached by optical fiber or netting twine between rectification bridge controller in above-mentioned actuator and all control objects.
A kind of rectifier bridge dynamic current equalizing control method, comprises the steps：
Master control controlling angle is sent to each rectification bridge controller by A, actuator；
The analog signalses that B, rectification bridge controller sample rate current sensor are sent, calculate each controllable silicon in rectifier bridge
The average current flowing through；
Rectification bridge controller in C, each control object obtains the controllable silicon average current of the rectifier bridge of all paired runnings,
Make the information equity that each rectification bridge controller obtains；
D, rectification bridge controller utilize each brachium pontis all parallel connections silicon controlled average current, carry out digital current-sharing calculating,
Obtain this brachium pontis silicon controlled and control angle offset, control governing speed and the output amplitude of this control angle offset simultaneously, will
This control angle offset is added to the master control controlling angle that actuator sends, and obtains this actual trigger angle of brachium pontis silicon controlled；
E, rectification bridge controller automatic identification rectifier bridge exit and exit with brachium pontis controllable silicon, when brachium pontis parallel connection controllable silicon in have
When part exits, automatically the controllable silicon in parallel of remaining normal operation is all flowed；
F, each rectification bridge controller are performed both by above-mentioned A～E step, so that paired running controllable silicon output current tends to
Unanimously.
After such scheme, the present invention has advantages below：
(1) realize component-level all to flow, make each controllable silicon caloric value equilibrium in parallel of brachium pontis, more meet all stream definition, be better than
Rectifier bridge exports all stream between both positive and negative polarity；
(2) all flow algorithms have robustness, and silicon-controlled device characteristic after long-term use can change, this method energy
Overcome the impact that this species diversity is brought, realize preferably all flowing effect under any circumstance, current stabilizing factor is better than 0.95.
(3) pass through communication media exchange data between rectification bridge controller, the information equity that each device obtains, realize certainly
Master all flows, and without actuator or foreign intervention, reliability greatly improves.
(4) rectification bridge controller energy automatic identification rectifier bridge exits and exits with brachium pontis controllable silicon, when brachium pontis parallel connection controllable silicon
In have part when exiting, automatically automatic current equalizing can be carried out to the controllable silicon in parallel of remaining normal operation.
Brief description
Fig. 1 is the integrated stand composition of control device of the present invention.
Specific embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
As shown in figure 1, the present invention provides a kind of rectifier bridge dynamic current equalizing control device, including actuator 1 and at least two groups
Control object, introduces separately below.
Each group of control object all includes rectification bridge controller 2, rectifier bridge 3 and current sensor 4, wherein, current sense
The input of device 4 is connected with rectifier bridge 3, flows through the electric current of rectifier bridge 3 for collection；The outfan of described current sensor 4 with
The analog quantity sampling input interface of rectification bridge controller 2 connects, and the current-mode analog quantity signal of collection is sent into rectification bridge controller 2
Calculated.In the present embodiment, current sensor is arranged on the three-phase alternating current input side of rectifier bridge, specifically in rectifier bridge
AC three-phase inlet wire be respectively mounted one shunting meter, by high withstand voltage isolating transmitter, major loop high current signal is converted into little
The analog quantity sampling input interface that signal gives rectification bridge controller is sampled.
Each rectifier bridge 3 all configures a rectification bridge controller 2, passes through between the rectification bridge controller of all control objects
The communication medias such as optical fiber, netting twine are attached, and in the present embodiment, can be attached by CAN communication network.
Actuator 1 is connected with the rectification bridge controller 2 in all control objects, logical between actuator and rectification bridge controller
Cross the communication medias such as optical fiber, netting twine to be attached.
Based on upper controller, the present invention also provides a kind of rectifier bridge dynamic current equalizing control method, comprises the steps：
A, actuator and each rectification bridge controller carry out optical-fibre communications, and master control controlling angle is sent to each rectifier bridge control
Device processed, is all flowed the references angle of regulation as rectification bridge controller；
The analog signalses that B, rectification bridge controller sample rate current sensor are sent, calculate rectification using ac-side current
The average current that in bridge, each controllable silicon flows through；
C, all of rectification bridge controller pass through CAN communication network connection together, and each rectification bridge controller is to it
While its device sends itself 6 controllable silicon average current, 6 controllable silicons receiving other all rectification bridge controllers are average
Electric current, so each rectification bridge controller all can obtain 6 controllable silicon average currents of the rectifier bridge of all paired runnings.Each
The information equity that rectification bridge controller obtains, is responsible for the sharing control of itself.
After D, rectification bridge controller obtain each brachium pontis all parallel connections silicon controlled average current, carry out digital current-sharing meter
Calculate, obtain each brachium pontis controllable silicon current reference value of itself, the deviation of this reference value and this controllable silicon actual current measured value
Adjust through PI, calculate brachium pontis silicon controlled and control angle offset.This control angle offset actuator that is added to is sent
Master control controlling angle, just obtain this actual trigger angle of brachium pontis silicon controlled.Belong to additional control due to all flowing regulation, need to control
Make its governing speed and output amplitude, it is to avoid impact actuator main ring control characteristic.
E, rectification bridge controller energy automatic identification rectifier bridge exit and exit with brachium pontis controllable silicon, when in brachium pontis parallel connection controllable silicon
When having part to exit, automatically the controllable silicon in parallel of remaining normal operation can all be flowed, be calculated new brachium pontis controllable silicon electricity
Stream reference value.Whole sharing control process is independently carried out by rectification bridge controller, without foreign intervention.
F, each rectification bridge controller are performed both by above-mentioned A～E step, so that paired running controllable silicon output current tends to
Unanimously.
Above example technological thought only to illustrate the invention is it is impossible to limit protection scope of the present invention with this, every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, each fall within the scope of the present invention
Within.
Claims (7)
1. a kind of rectifier bridge dynamic current equalizing control device it is characterised in that：Including actuator and at least two groups control objects, each
Organize control object and all include rectification bridge controller, rectifier bridge and current sensor, wherein, the input of current sensor and rectification
Bridging connects, and the outfan of current sensor is connected with the input of rectification bridge controller；In actuator and all control objects
Rectification bridge controller connects.
2. as claimed in claim 1 a kind of rectifier bridge dynamic current equalizing control device it is characterised in that：Described current sensor peace
It is contained in the three-phase alternating current input side of rectifier bridge.
3. as claimed in claim 1 a kind of rectifier bridge dynamic current equalizing control device it is characterised in that：Described current sensor
Outfan connects the analog quantity sampling input interface of rectification bridge controller.
4. as claimed in claim 1 a kind of rectifier bridge dynamic current equalizing control device it is characterised in that：Described each control object
It is attached by optical fiber or netting twine between rectification bridge controller.
5. as claimed in claim 4 a kind of rectifier bridge dynamic current equalizing control device it is characterised in that：Described each control object
It is attached by CAN communication network between rectification bridge controller.
6. as claimed in claim 1 a kind of rectifier bridge dynamic current equalizing control device it is characterised in that：Described actuator with all
It is attached by optical fiber or netting twine between rectification bridge controller in control object.
7. a kind of rectifier bridge dynamic current equalizing control method is it is characterised in that comprise the steps：
Master control controlling angle is sent to each rectification bridge controller by A, actuator；
The analog signalses that B, rectification bridge controller sample rate current sensor are sent, calculate each controllable silicon in rectifier bridge and flow through
Average current；
Rectification bridge controller in C, each control object obtain the rectifier bridge of all paired runnings controllable silicon average current so that
The information equity that each rectification bridge controller obtains；
D, rectification bridge controller utilize each brachium pontis all parallel connections silicon controlled average current, carry out digital current-sharing calculating, obtain
This brachium pontis silicon controlled controls angle offset, controls governing speed and the output amplitude of this control angle offset simultaneously, this is controlled
Angle offset processed is added to the master control controlling angle that actuator sends, and obtains this actual trigger angle of brachium pontis silicon controlled；
E, rectification bridge controller automatic identification rectifier bridge exit and exit with brachium pontis controllable silicon, when brachium pontis parallel connection controllable silicon in have part
When exiting, automatically the controllable silicon in parallel of remaining normal operation is all flowed；
F, each rectification bridge controller are performed both by above-mentioned A～E step, so that paired running controllable silicon output current tends to one
Cause.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610902091.7A CN106452134B (en) | 2016-10-17 | 2016-10-17 | A kind of rectifier bridge dynamic current equalizing control device and control method |
| PCT/CN2017/111132 WO2018072761A1 (en) | 2016-10-17 | 2017-11-15 | Apparatus and method for bridge rectifier to dynamically control current sharing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610902091.7A CN106452134B (en) | 2016-10-17 | 2016-10-17 | A kind of rectifier bridge dynamic current equalizing control device and control method |
Publications (2)
| Publication Number | Publication Date |
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| CN106452134A true CN106452134A (en) | 2017-02-22 |
| CN106452134B CN106452134B (en) | 2019-05-07 |
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| CN201610902091.7A Active CN106452134B (en) | 2016-10-17 | 2016-10-17 | A kind of rectifier bridge dynamic current equalizing control device and control method |
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| CN (1) | CN106452134B (en) |
| WO (1) | WO2018072761A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018072761A1 (en) * | 2016-10-17 | 2018-04-26 | 南京南瑞继保电气有限公司 | Apparatus and method for bridge rectifier to dynamically control current sharing |
| CN111224591A (en) * | 2020-02-24 | 2020-06-02 | 南京胜途电气科技有限公司 | Digital automatic adjustment current equalizing system and method for networked excitation system |
| WO2022267216A1 (en) * | 2021-06-24 | 2022-12-29 | 维谛技术有限公司 | Silicon controlled rectifier soaking control method and apparatus, and computer-readable storage medium |
| CN116599328A (en) * | 2023-07-17 | 2023-08-15 | 核工业西南物理研究院 | Module, system and method for parallel current sharing real-time adjustment of thyristor power bridge arm |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113411023B (en) * | 2021-06-24 | 2023-11-17 | 华能(福建漳州)能源有限责任公司 | Silicon controlled trigger pulse control method for generator excitation rectifying cabinet |
| CN116404887B (en) * | 2023-03-24 | 2024-04-02 | 江苏威森美微电子有限公司 | Rectifier bridge diode subassembly |
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| CN101795108B (en) * | 2010-03-16 | 2012-05-02 | 东方电气集团东方电机有限公司 | Excitation control system for giant machine set |
| CN106452134B (en) * | 2016-10-17 | 2019-05-07 | 南京南瑞继保电气有限公司 | A kind of rectifier bridge dynamic current equalizing control device and control method |
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2016
- 2016-10-17 CN CN201610902091.7A patent/CN106452134B/en active Active
-
2017
- 2017-11-15 WO PCT/CN2017/111132 patent/WO2018072761A1/en active Application Filing
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| CN1819263A (en) * | 2006-01-19 | 2006-08-16 | 国电自动化研究院 | Exciting controllable silicon rectifying bridge outputting method with intelligent control |
| CN101795084A (en) * | 2010-03-16 | 2010-08-04 | 东方电气集团东方电机有限公司 | Thyristor rectifier bridge parallel operation full digital current homogenizing control device |
| CN105553361A (en) * | 2016-02-05 | 2016-05-04 | 国电南京自动化股份有限公司 | Centralized current sharing control method for excitation power cabinets |
| CN105762785A (en) * | 2016-04-12 | 2016-07-13 | 长江三峡能事达电气股份有限公司 | Current sharing control method for parallel intelligent rectifier bridges |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018072761A1 (en) * | 2016-10-17 | 2018-04-26 | 南京南瑞继保电气有限公司 | Apparatus and method for bridge rectifier to dynamically control current sharing |
| CN111224591A (en) * | 2020-02-24 | 2020-06-02 | 南京胜途电气科技有限公司 | Digital automatic adjustment current equalizing system and method for networked excitation system |
| WO2022267216A1 (en) * | 2021-06-24 | 2022-12-29 | 维谛技术有限公司 | Silicon controlled rectifier soaking control method and apparatus, and computer-readable storage medium |
| CN116599328A (en) * | 2023-07-17 | 2023-08-15 | 核工业西南物理研究院 | Module, system and method for parallel current sharing real-time adjustment of thyristor power bridge arm |
| CN116599328B (en) * | 2023-07-17 | 2023-12-08 | 核工业西南物理研究院 | Module, system and method for parallel current sharing real-time adjustment of thyristor power bridge arm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106452134B (en) | 2019-05-07 |
| WO2018072761A1 (en) | 2018-04-26 |
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