CN105790555A - Synchronous communication method for paralleling intelligent rectifier bridge with regulator - Google Patents
Synchronous communication method for paralleling intelligent rectifier bridge with regulator Download PDFInfo
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- CN105790555A CN105790555A CN201610224359.6A CN201610224359A CN105790555A CN 105790555 A CN105790555 A CN 105790555A CN 201610224359 A CN201610224359 A CN 201610224359A CN 105790555 A CN105790555 A CN 105790555A
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- rectifier bridge
- actuator
- intelligence
- data
- intelligence rectifier
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
-
- 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
- H02M7/145—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 thyratron or thyristor type requiring extinguishing means
- H02M7/155—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/17—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in parallel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The present invention provides a synchronous communication method for paralleling an intelligent rectifier bridge with a regulator. The synchronous communication method is applied to the control of a three-phase silicon-controlled intelligent rectifier bridge with multi-way parallel and employs an optical connector to connect each regulator and each intelligent rectifier bridge; receiving and transmitting fibers are arranged between each rectifier bridge rectifier bridge controller and each regulator; each intelligent rectifier bridge is triggered by synchronization signals to actively transmit sampling data to each regulator, after each regulator receives the first frame of sampling data from the intelligent rectifier bridge, transmits control information to all the intelligent rectifier bridges in a broadcast mode and starts interior communication period timing; and after each regulator receives the data of the intelligent rectifier bridges, the communication process is finished. The present invention discloses a broadcast-type synchronous communication method for controlling the output current equalization of each rectifier bridge which is able to allow the output current of each intelligent rectifier bridge approaches to be equal and consistent, avoids the faults caused in the process of network and communication and guarantees the consistent control information so as to avoid the fault that information is refreshed in the process of transmission of control information.
Description
Technical field
The present invention relates to power supply technology, the synchronized communication method between specifically a kind of intelligence rectifier bridge in parallel and actuator.
Background technology
High power electronic equipment typically requires the multiple controllable silicon three-phase commutation bridge Parallel opertation of use, controller output trigger pulse, and mode exports each rectifier bridge in parallel, and in rectifier bridge, pulse triggers controlled silicon conducting after amplifying.Utilizing synchronous triggering signal to control the angle of flow and trigger controllable silicon, although anode supply and to trigger pulse be identical, but because the hardware reason such as controlled silicon conducting Time Inconsistency, the electric current of each rectifier bridge output is also unbalanced.
Communication network many uses CAN net, the Trigger Angle that controller calculates is sent to all intelligence rectifier bridges by " broadcast " pattern, and communication efficiency is significantly high, as long as the reception enquiry frequency of intelligence rectifier bridge just can refresh Trigger Angle in time higher than controller transmission frequency.If needing intelligence rectifier bridge can send oneself state information to controller, such as bridge arm current, output electric current, anode voltage, excitation voltage etc., it is easy to controller and rectifier bridge can be carried out status monitoring and failure predication, and relevant information is given to monitoring system；Or needing controller to send more rich information to intelligence rectifier bridge, in order to during controller failure, intelligence rectifier bridge can replace controller to work, maintain system stability output, CAN is just inapplicable temporarily.Because CAN is only capable of at most transmitting 8 data bytes every time, so big data volume to be transmitted and must adopt higher communication frequency.Embedded control system is in order to ensure the reliability controlled, and typically via status poll, non-interrupted communicates.And high frequency transmitting-receiving occupies excess CPU resources on the one hand, it is likely to control can be produced harmful effect on the other hand, so CAN is not suitable for this big data quantity communications applications.
What the stationary problem owing to exporting pulse can cause output electric current can not be balanced, is first that controller has refreshed Trigger Angle when sending Trigger Angle to each intelligence rectifier bridge, causes the Trigger Angle that intelligence rectifier bridge receives inconsistent.
Next to that controller sends successively to each rectifier bridge occurs in that in the process of Trigger Angle that the synchronizing signal of driving pulse is interrupted, the intelligent rectifier bridge so having uses new Trigger Angle, and the intelligent rectifier bridge having uses original Trigger Angle.
It is finally that rectifier bridge uses different locking phase to drive, causes that Trigger Angle renewable time is inconsistent.Rectifier bridge is generally individually has accessed A, B, C three-phase synchronous signal, and under normal condition, all rectifier bridges should use same phase synchronization signal to drive and trigger pulse.
If a certain phase synchronization signal fault that rectifier bridge uses, being switched to another mutually normal synchronizing signal, and cause that rectifier bridge will not use unified synchronizing signal, the pulse having for 1/3 or 2/3 cycle is asynchronous.
Summary of the invention
The technical problem to be solved is to solve the problems referred to above, synchronized communication method between a kind of intelligence rectifier bridge in parallel and actuator is provided, make between rectifier bridge in parallel and actuator by the suitable communication of larger data amount, control the output current balance of each rectifier bridge and be not subject to quasiconductor dispersing characteristic and web influence, and avoid the occurrence of synchronization fault.
Synchronized communication method between described intelligence rectifier bridge in parallel and actuator, it is applied to the control of the three-phase controllable silicon intelligence rectifier bridge of multi-channel parallel, it is characterized in that: connected each intelligence rectifier bridge by actuator by communications connector, each intelligence rectifier bridge arranges rectifier bridge controller and each arm path and outfan carries out the transformer of parameter sampling, each phase line is all provided with synchronous generator, and synchronous generator is by the AC signal sampling shaping of corresponding phase and exports synchronizing signal to each rectifier bridge controller:
Described communications connector is optical connector, is respectively provided with two optical fiber of sending and receiving between each rectifier bridge controller and actuator, and each optical fiber is provided with each independent optical fiber interface；Each intelligence rectifier bridge is triggered by synchronizing signal and actively sends sampled data to actuator, and actuator receives the first frame after the sampled data of intelligence rectifier bridge, sends control information to all intelligence rectifier bridge broadcast types, and starts the intercommunication cycle and clock；Actuator receive all intelligence rectifier bridge data after communication process terminate；If the time restriction that communication process timing reaches to preset remains without the data receiving all intelligence rectifier bridges, then force to terminate current communication cycle.
The embodiment of a kind of actuator response is, actuator includes average current value to the control information that each intelligence rectifier bridge sends, and each intelligence rectifier bridge adjusts, with the difference of average current, the angle of flow next time often triggering pulse mutually according to the every phase bridge arm current of self.
The embodiment of another kind of actuator response is, actuator includes controlling the angle of flow of electric current to the control information that each intelligence rectifier bridge sends, and each intelligence rectifier bridge arranges, with the current angle of flow, the angle of flow adjusting phase-shifting trigger pulse next time according to the every phase bridge arm current of self.
Preferably, intelligence rectifier bridge arranges data with interrupt mode after receiving synchronizing signal and sends mark, mastery routine starts the data to actuator after inquiring data transmission mark and sends, and the transmission mark that clears data, and the program cycle period of rectifier bridge controller controls within 3ms.
Actuator only sends secondary control data within a synchronizing cycle, and identical to the control data of each intelligence rectifier bridge transmission within a synchronizing cycle.
Further, if a certain intelligence rectifier bridge current sync breaks down mutually, then actuator will send locking phase switching command in the control information descending into each intelligence rectifier bridge, coordinate all intelligence rectifier bridge unifications and be switched to the rectifier bridge data transmission that normal synchronized drives mutually.
As embodiment, actuator starts communication cycle timing after receiving first data, and in starting communication cycle scheduled service routines, unified answer logo is set, mastery routine sends control information according to unified answer logo, unified answer logo is removed so that actuator only sends a secondary control information in a communication cycle after sending control information.
The invention discloses the broadcast type synchronized communication method of the output current balance controlling each rectifier bridge between a kind of intelligence rectifier bridge in parallel and actuator, tend to balanced consistent reaching each intelligence rectifier bridge output electric current, avoid the fault that network and communication process cause simultaneously, ensure that control information unanimously controls the faults such as information is refreshed in information process without occurring sending.
Accompanying drawing explanation
Fig. 1 is control structure embodiment one schematic diagram of the present invention.
Fig. 2 is control structure embodiment two schematic diagram of the present invention.
In figure: 1 intelligence rectifier bridge, 2 rectifier bridge controllers, 3 transformers, 4 communications connectors, 5 actuators, 6 synchronous generators.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described: as shown in Figure 1, synchronous communication structure between intelligence rectifier bridge in parallel and actuator, it is applied to the control of the three-phase controllable silicon intelligence rectifier bridge of multi-channel parallel, each intelligence rectifier bridge 1 is connected by optical connector by actuator 5, each intelligence rectifier bridge arranges rectifier bridge controller 2 and each arm path and outfan carries out the transformer 3 of parameter sampling, each phase line is all provided with synchronous generator 6, synchronous generator is by the AC signal sampling shaping of corresponding phase and exports synchronizing signal to each rectifier bridge controller 2.
Being respectively provided with two optical fiber of sending and receiving between each rectifier bridge controller and actuator, each optical fiber is provided with each independent optical fiber interface；Each intelligence rectifier bridge is triggered by synchronizing signal and actively sends sampled data to actuator.
Synchronous communication process between intelligence rectifier bridge in parallel and actuator is as follows, as shown in Figure 2:
One, intelligence rectifier bridge arranges data with interrupt mode after receiving synchronizing signal and sends mark, mastery routine starts the data to actuator after inquiring data transmission mark and sends, and the transmission mark that clears data, to ensure only to send a secondary data within a synchronizing cycle.
The program cycle period of rectifier bridge controller controls within 3ms.To ensure that communication cycle internal adjuster has time enough to receive the data of all intelligence rectifier bridges.
Two, actuator receives the first frame after the sampled data of intelligence rectifier bridge, sends control information to all intelligence rectifier bridge broadcast types.Being provided with independent optical fiber interface based on all intelligence rectifier bridges, all intelligence rectifier bridges can almost synchronize to receive the control information of actuator.
The embodiment of a kind of actuator response is, actuator includes average current value to the control information that each intelligence rectifier bridge sends, and each intelligence rectifier bridge adjusts, with the difference of average current, the angle of flow next time often triggering pulse mutually according to the every phase bridge arm current of self.
The embodiment of another kind of actuator response is, actuator includes controlling the angle of flow of electric current to the control information that each intelligence rectifier bridge sends, the angle of flow data that each intelligence rectifier bridge converses according to the every phase bridge arm current of self, arrange, with the current angle of flow received, the angle of flow adjusting phase-shifting trigger pulse next time.
Actuator only sends secondary control data within a synchronizing cycle, and identical to the control data of each intelligence rectifier bridge transmission within a synchronizing cycle.
For ensureing that actuator only sends secondary control data within a synchronizing cycle, actuator starts communication cycle timing after receiving first data, and in starting communication cycle scheduled service routines, unified answer logo is set, mastery routine sends control information according to unified answer logo, after sending control information, removes unified answer logo.
Three, within synchronizing cycle, actuator also starts the intercommunication cycle and clocks；Actuator receive all intelligence rectifier bridge data after communication process terminate.
If the time restriction that communication process timing reaches to preset remains without the data receiving all intelligence rectifier bridges, then force to terminate current communication cycle.If actuator judges communication failure occur with some intelligence rectifier bridge, send alarm signal to upper server in real time.
If a certain intelligent rectifier bridge current sync breaks down mutually, then actuator will send locking phase switching command in the control information descending into each intelligence rectifier bridge, coordinate all intelligence rectifier bridge unifications and be switched to the rectifier bridge data transmission that normal synchronized drives mutually.
Claims (7)
1. the synchronized communication method between an intelligence rectifier bridge in parallel and actuator, it is applied to the control of the three-phase controllable silicon intelligence rectifier bridge of multi-channel parallel, it is characterized in that: connected each intelligence rectifier bridge (1) by actuator (5) by communications connector (4), each intelligence rectifier bridge arranges rectifier bridge controller (2) and each arm path and outfan carries out the transformer (3) of parameter sampling, each phase line is all provided with synchronous generator (6), synchronous generator is by the AC signal sampling shaping of corresponding phase and exports synchronizing signal to each rectifier bridge controller (2):
Described communications connector is optical connector, is respectively provided with two optical fiber of sending and receiving between each rectifier bridge controller and actuator, and each optical fiber is provided with each independent optical fiber interface；Each intelligence rectifier bridge is triggered by synchronizing signal and actively sends sampled data to actuator, and actuator receives the first frame after the sampled data of intelligence rectifier bridge, sends control information to all intelligence rectifier bridge broadcast types, and starts the intercommunication cycle and clock；Actuator receive all intelligence rectifier bridge data after communication process terminate；If the time restriction that communication process timing reaches to preset remains without the data receiving all intelligence rectifier bridges, then force to terminate current communication cycle.
2. the synchronized communication method between intelligence rectifier bridge in parallel according to claim 1 and actuator, it is characterized in that: actuator includes average current value to the control information that each intelligence rectifier bridge sends, and each intelligence rectifier bridge adjusts, with the difference of average current, the angle of flow next time often triggering pulse mutually according to the every phase bridge arm current of self.
3. the synchronized communication method between intelligence rectifier bridge in parallel according to claim 1 and actuator, it is characterized in that: actuator includes controlling the angle of flow of electric current to the control information that each intelligence rectifier bridge sends, and each intelligence rectifier bridge arranges, with the current angle of flow, the angle of flow adjusting phase-shifting trigger pulse next time according to the every phase bridge arm current of self.
4. the synchronized communication method between intelligence rectifier bridge in parallel according to claim 1 and actuator, it is characterized in that: intelligence rectifier bridge arranges data with interrupt mode after receiving synchronizing signal and sends mark, mastery routine starts the data to actuator after inquiring data transmission mark and sends, and the transmission mark that clears data, the program cycle period of rectifier bridge controller controls within 3ms.
5. according to the synchronized communication method between intelligence rectifier bridge in parallel and the actuator one of Claims 1 to 4 Suo Shu, it is characterized in that: actuator only sends secondary control data within a synchronizing cycle, and identical to the control data of each intelligence rectifier bridge transmission within a synchronizing cycle.
6. the synchronized communication method between intelligence rectifier bridge in parallel according to claim 5 and actuator, it is characterized in that: if a certain intelligence rectifier bridge current sync breaks down mutually, then actuator will send locking phase switching command in the control information descending into each intelligence rectifier bridge, coordinate all intelligence rectifier bridge unifications and be switched to the rectifier bridge data transmission that normal synchronized drives mutually.
7. the synchronized communication method between intelligence rectifier bridge in parallel according to claim 5 and actuator, it is characterized in that: actuator starts communication cycle timing after receiving first data, and in starting communication cycle scheduled service routines, unified answer logo is set, mastery routine sends control information according to unified answer logo, unified answer logo is removed so that actuator only sends a secondary control information in a communication cycle after sending control information.
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| CN106655822A (en) * | 2016-12-27 | 2017-05-10 | 上海新时达电气股份有限公司 | Frequency converter control circuit |
| CN109951087A (en) * | 2019-03-22 | 2019-06-28 | 中国长江电力股份有限公司 | Intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network |
| CN110890846A (en) * | 2019-12-18 | 2020-03-17 | 长江三峡能事达电气股份有限公司 | High-redundancy synchronous signal switching method for intelligent rectifier bridge |
| CN114759770A (en) * | 2022-06-13 | 2022-07-15 | 长江三峡能事达电气股份有限公司 | Method, system and medium for simultaneous transmission of data information and shared synchronization signal |
| CN117713603A (en) * | 2024-01-11 | 2024-03-15 | 北京科电亿恒电力技术有限公司 | Excitation current sharing system, current sharing control method and electronic equipment |
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| CN114759770A (en) * | 2022-06-13 | 2022-07-15 | 长江三峡能事达电气股份有限公司 | Method, system and medium for simultaneous transmission of data information and shared synchronization signal |
| CN114759770B (en) * | 2022-06-13 | 2022-09-20 | 长江三峡能事达电气股份有限公司 | Method, system and medium for simultaneous transmission of data information and shared synchronization signal |
| CN117713603A (en) * | 2024-01-11 | 2024-03-15 | 北京科电亿恒电力技术有限公司 | Excitation current sharing system, current sharing control method and electronic equipment |
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| CN105790555B (en) | 2017-12-26 |
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