CN109951087A - Intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network - Google Patents
Intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network Download PDFInfo
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Abstract
The invention discloses a kind of intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network, intelligent rectifier bridge suitable for multiple output-parallels, intelligent rectifier bridge includes three-phase rectification bridge, the controller for being configured with FPGA and CPU, the state for the three-phase synchronous signal that intelligent rectifier bridge judgement locally accesses, and by the state tying of synchronization signal to all intelligent rectifier bridges；Intelligent rectifier bridge according to synchronous working mutually select rule selected from the phase synchronization signal of all intelligent rectifier bridges all the way synchronization signal as the phase that works asynchronously；Whether the three-phase synchronous signal of the corresponding intelligent rectifier bridge of intelligent rectifier bridge real-time judge work phase signals locally accessed there is synchronous failure and reselects synchronous working phase.The present invention improves the redundancy of synchronization signal to improve the fault-tolerance and availability of rectifier bridge, has ensured that electric system is continually and steadily run；Intelligent rectifier bridge selects rule mutually using common synchronous working to select synchronous working phase, is conducive to the stability of raising system.
Description
Technical field
The invention belongs to field of power conversion, and in particular to a kind of intelligent rectifier bridge height based on FPGA and communication network is superfluous
Remaining synchronous method.
Background technique
High power electronic equipment is usually required using multiple silicon-controlled three-phase rectification bridge parallel outputs, such as 4 institute of attached drawing
Show, controller exports Trigger Angle to rectifier bridge by communication network, raw according to synchronization signal and Trigger Angle by rectification bridge controller
At control pulse-triggered rectifier bridge, anode-side three-phase alternating current is switched into direct current.As shown in Fig. 5, what intelligent rectifier bridge used is same
Step signal is that the anode voltage sine wave of rectifier bridge input is converted to signal square wave after synchronous shaping is depressured shaping,
Using square wave edge as cycle starting point, it to be used for drive control pulse.As shown in Fig. 6, it is generally the case that rectifier bridge has accessed A
Phase, B phase, C phase three-phase synchronous signal, use under normal condition wherein a phase synchronization signal as synchronous working mutually driving triggering arteries and veins
Punching.Another mutually normal synchronization signal will be switched to when the synchronization signal failure for the phase that works asynchronously.But if the synchronization of rectifier bridge
There is secondary failure in signal, there is 2 phases or 3 phases broken string, and all synchronization signals that will lead to intelligent rectifier bridge access disappear, and intelligence is whole
Flowing bridge can only be out of service.
Summary of the invention
Present invention aim to address the above problems, and it is superfluous to provide a kind of intelligent rectifier bridge height based on FPGA and communication network
Remaining synchronous method shares the three-phase synchronous signal from all rectifier bridges by communication network, and common choice is wherein all the way
As the synchronous working phase of driving rectifier bridge trigger pulse, the redundancy of synchronization signal is improved to improve the appearance of rectifier bridge
Mistake and availability have ensured that electric system is continually and steadily run.
The technical scheme is that the intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network, the intelligence
Energy rectifier bridge High redundancy synchronous method is suitable for the intelligent rectifier bridge of multiple output-parallels, and intelligent rectifier bridge includes three phase rectifier
Bridge, the controller for being configured with FPGA and CPU are connected through communication network between the controller of intelligent rectifier bridge, based on FPGA and logical
The intelligent rectifier bridge High redundancy synchronous method of communication network specifically includes following steps,
Step 1: the state for the three-phase synchronous signal that intelligent rectifier bridge judgement locally accesses, and the status information of synchronization signal is led to
It crosses communication network and shares to all intelligent rectifier bridges；
Step 2: intelligent rectifier bridge according to synchronous working, mutually select from the phase synchronization signal of all intelligent rectifier bridges by selection rule
Synchronization signal is as synchronous working phase all the way；
Step 3: obtaining the corresponding intelligent rectifier bridge serial number of work at present phase signals；
Step 4: judging whether the three-phase synchronous signal of the corresponding intelligent rectifier bridge of work phase signals locally accessed synchronizes
Failure；
Step 4.1: if there is synchronous failure, executing step 5；
Step 4.2: if there is not synchronous failure, executing step 3；
Step 5: judging whether that the three-phase synchronous signal of each intelligent rectifier bridge locally accessed has synchronous failure；
Step 5.1: if all there is synchronous failure, thening follow the steps 7；
Step 5.2: if not all there is synchronous failure, thening follow the steps 6；
Step 6: intelligent rectifier bridge of the search the smallest three-phase synchronous signal locally accessed of serial number without synchronous failure chooses this intelligence
The A phase of energy rectifier bridge locally accessed is as synchronous working phase；
Step 7: only there is phase synchronization failure in the three-phase synchronous signal locally accessed for judging whether there is intelligent rectifier bridge；
Step 7.1: only occurring the intelligent rectifier bridge of the phase synchronization failure locally accessed if it exists, then follow the steps 8；
Step 7.2: only occurring the intelligent rectifier bridge of the phase synchronization failure locally accessed if it does not exist, then follow the steps 9；
Step 8: the search the smallest intelligent rectifier bridge for the phase synchronization failure locally accessed only occur of serial number selects this intelligence whole
The phase synchronization signal of the non-faulting of bridge is flowed as synchronous working phase；
Step 9: the phase synchronization signal locally accessed for judging whether there is intelligent rectifier bridge is normal；
Step 9.1: the phase synchronization signal of intelligent rectifier bridge locally accessed is normal if it exists, thens follow the steps 10；
Step 9.2: the phase synchronization signal of intelligent rectifier bridge locally accessed is normal if it does not exist, thens follow the steps 11；
Step 10: the smallest intelligent rectifier bridge that there is the phase synchronization signal normally locally accessed of search serial number selects this intelligence
The phase synchronization signal of the non-faulting of energy rectifier bridge is as synchronous working phase；
Step 11: issuing the alarm of the synchronous failure of all intelligent rectifier bridges.
Further, the synchronous failure includes synchronization signal missing, synchronization signal broken string, and the synchronous working is mutually selected
Rule is selected to specifically include:
1) the A phase synchronization signal of the smallest intelligent rectifier bridge of the serial number without synchronous failure locally accessed is selected；
2) when the phase synchronization signal locally accessed synchronization failure occurs in each intelligent rectifier bridge, only occurs phase synchronization if it exists
The intelligent rectifier bridge of failure selects being synchronised for the smallest non-faulting for the intelligent rectifier bridge of phase synchronization failure only occur of serial number
Otherwise signal selects the smallest intelligence rectification that there is the phase synchronization signal normally locally accessed of serial number as synchronous working phase
Bridge, using the phase synchronization signal for the non-faulting of this intelligent rectifier bridge locally accessed as synchronous working phase.
Further, the three-phase synchronous signal that the FPGA of the intelligent rectifier bridge will be accessed locally is output to CPU, and root
Mutually forward corresponding synchronous working phase signals to CPU according to the synchronous working that CPU is selected.
Further, the input signal of the FPGA of the intelligent rectifier bridge includes the three-phase synchronous signal locally accessed,
It further include the three-phase of all intelligent rectifier bridges in parallel with this intelligence rectifier bridge accessed in the form of real time data or input signal
Synchronization signal.
Beneficial effects of the present invention:
1) redundancy of synchronization signal is improved to improve the fault-tolerance and availability of rectifier bridge, has ensured that electric system is held
Continuous stable operation；
2) forwarding three-phase synchronous signal is received using FPGA, intelligent rectifier bridge is enabled to be switched fast synchronization signal, safeguards system
Stable operation；
3) using the state of CPU real time monitoring three-phase synchronous signal and the phase that works asynchronously, and by synchronization signal state tying, it is conducive to
Synchronous failure is found early and is taken measures；
4) mutually selection rule selects common synchronous working phase to intelligent rectifier bridge in parallel using common synchronous working, is conducive to
The stability of raising system.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the flow chart of the intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network.
Fig. 2 is intelligent rectifier bridge input signal and output signal schematic diagram.
Fig. 3 is the selection course schematic diagram of synchronous working phase.
Fig. 4 is rectifier bridge operation principle schematic diagram.
Fig. 5 is that synchronization signal generates schematic diagram.
Fig. 6 is the three-phase synchronous signal schematic diagram of rectifier bridge locally accessed.
Specific embodiment
As shown in Figure 1-3, the intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network, this is intelligently rectified
Bridge High redundancy synchronous method is suitable for the intelligent rectifier bridge of multiple output-parallels, and intelligent rectifier bridge includes three-phase rectification bridge, matches
The controller for having set FPGA and CPU, the intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network specifically include
Following steps,
Step 1: the state for the three-phase synchronous signal that intelligent rectifier bridge judgement locally accesses, and the status information of synchronization signal is led to
It crosses communication network and shares to all intelligent rectifier bridges；
Step 2: intelligent rectifier bridge according to synchronous working, mutually select from the phase synchronization signal of all intelligent rectifier bridges by selection rule
Synchronization signal is as synchronous working phase all the way；
Step 3: obtaining the corresponding intelligent rectifier bridge serial number of work at present phase signals；
Step 4: judging whether the three-phase synchronous signal of the corresponding intelligent rectifier bridge of work phase signals locally accessed synchronizes
Failure；
Step 4.1: if there is synchronous failure, executing step 5；
Step 4.2: if there is not synchronous failure, executing step 3；
Step 5: judging whether that the three-phase synchronous signal of each intelligent rectifier bridge locally accessed has synchronous failure；
Step 5.1: if all there is synchronous failure, thening follow the steps 7；
Step 5.2: if not all there is synchronous failure, thening follow the steps 6；
Step 6: intelligent rectifier bridge of the search the smallest three-phase synchronous signal locally accessed of serial number without synchronous failure chooses this intelligence
The A phase of energy rectifier bridge locally accessed is as synchronous working phase；
Step 7: only there is phase synchronization failure in the three-phase synchronous signal locally accessed for judging whether there is intelligent rectifier bridge；
Step 7.1: only occurring the intelligent rectifier bridge of the phase synchronization failure locally accessed if it exists, then follow the steps 8；
Step 7.2: only occurring the intelligent rectifier bridge of the phase synchronization failure locally accessed if it does not exist, then follow the steps 9；
Step 8: the search the smallest intelligent rectifier bridge for the phase synchronization failure locally accessed only occur of serial number selects this intelligence whole
The phase synchronization signal of the non-faulting of bridge is flowed as synchronous working phase；
Step 9: the phase synchronization signal locally accessed for judging whether there is intelligent rectifier bridge is normal；
Step 9.1: the phase synchronization signal of intelligent rectifier bridge locally accessed is normal if it exists, thens follow the steps 10；
Step 9.2: the phase synchronization signal of intelligent rectifier bridge locally accessed is normal if it does not exist, thens follow the steps 11；
Step 10: the smallest intelligent rectifier bridge that there is the phase synchronization signal normally locally accessed of search serial number selects this intelligence
The phase synchronization signal of the non-faulting of energy rectifier bridge is as synchronous working phase；
Step 11: issuing the alarm of the synchronous failure of all intelligent rectifier bridges.
Synchronous failure includes synchronization signal missing, synchronization signal broken string.
As shown in figure 3, intelligent rectifier bridge mutually selects rule from the three-phase synchronous of all intelligent rectifier bridges according to synchronous working
It is selected in signal all the way as synchronous working phase, mutually selection rule specifically includes synchronous working:
1) the A phase synchronization signal of the smallest intelligent rectifier bridge of the serial number without synchronous failure locally accessed is selected；
2) when the phase synchronization signal locally accessed synchronization failure occurs in each intelligent rectifier bridge, only occurs phase synchronization if it exists
The intelligent rectifier bridge of failure selects being synchronised for the smallest non-faulting for the intelligent rectifier bridge of phase synchronization failure only occur of serial number
Otherwise signal selects the smallest intelligence rectification that there is the phase synchronization signal normally locally accessed of serial number as synchronous working phase
Bridge, using the phase synchronization signal for the non-faulting of this intelligent rectifier bridge locally accessed as synchronous working phase.
The FPGA of intelligent rectifier bridge has collected the three-phase synchronous signal of all rectifier bridges, and forwards as desired wherein all the way
Work phase to CPU as driving trigger pulse.Even if the three-phase synchronous signal for accessing intelligent rectifier bridge is all lost, this intelligence
Rectifier bridge could be used that the synchronization signal from another intelligent rectifier bridge drives trigger pulse, will not be out of service.
The three-phase synchronous signal that intelligent rectifier bridge locally accesses, while being sent to CPU and FPGA.FPGA receives synchronous letter
The FPGA of remaining intelligent rectifier bridge is passed in the form of pulse or data communication network or hardwire after number.FPGA
The synchronization signal of output can occupy a communication line or hardwire with every phase, and a communication line can also be shared with three-phase, is used
Distinct pulse widths represent different phases, start synchronous edge pulse in synchronous square wave rising edge and/or failing edge and send.
As shown in Fig. 2, FPGA is also received by communication network or hardwire other than the three-phase synchronous signal locally accessed
Collect the synchronization signal of remaining intelligence rectifier bridge FPGA transmission.CPU has accessed 4 tunnel synchronization signals, and three in addition to locally accessing are identical
It walks outside signal, there are also FPGA according to the work phase synchronization signal of CPU selection forwarding.
All intelligence rectifier bridges under identical synchronous regime according to same rule selection be with synchronization signal all the way,
The FPGA dominant frequency of embodiment is more than 1GHz, and Forwarding Latency was no more than for 10 nanoseconds, can ignore relative to 20 milliseconds of power frequency periods.
The intelligent rectifier bridge of embodiment passes through practice test, runs long-term and stably, do not occur because of synchronization signal therefore
Hinder and causes intelligent rectifier bridge out of service.
Claims (4)
1. the intelligent rectifier bridge High redundancy synchronous method based on FPGA and communication network, which is characterized in that the intelligence rectifier bridge
High redundancy synchronous method is suitable for the intelligent rectifier bridge of multiple output-parallels, and intelligent rectifier bridge includes three-phase rectification bridge, configuration
The controller of FPGA and CPU are connected through communication network between the controller of intelligent rectifier bridge, based on FPGA and communication network
Intelligent rectifier bridge High redundancy synchronous method includes the following steps,
Step 1: the state for the three-phase synchronous signal that intelligent rectifier bridge judgement locally accesses, and the status information of synchronization signal is led to
It crosses communication network and shares to all intelligent rectifier bridges；
Step 2: intelligent rectifier bridge according to synchronous working, mutually select from the phase synchronization signal of all intelligent rectifier bridges by selection rule
Synchronization signal is as synchronous working phase all the way；
Step 3: obtaining the corresponding intelligent rectifier bridge serial number of work at present phase signals；
Step 4: judging whether the three-phase synchronous signal of the corresponding intelligent rectifier bridge of work phase signals locally accessed synchronizes
Failure；
Step 4.1: if there is synchronous failure, executing step 5；
Step 4.2: if there is not synchronous failure, executing step 3；
Step 5: judging whether that the three-phase synchronous signal of each intelligent rectifier bridge locally accessed has synchronous failure；
Step 5.1: if all there is synchronous failure, thening follow the steps 7；
Step 5.2: if not all there is synchronous failure, thening follow the steps 6；
Step 6: intelligent rectifier bridge of the search the smallest three-phase synchronous signal locally accessed of serial number without synchronous failure chooses this intelligence
The A phase of energy rectifier bridge locally accessed is as synchronous working phase；
Step 7: only there is phase synchronization failure in the three-phase synchronous signal locally accessed for judging whether there is intelligent rectifier bridge；
Step 7.1: only occurring the intelligent rectifier bridge of the phase synchronization failure locally accessed if it exists, then follow the steps 8；
Step 7.2: only occurring the intelligent rectifier bridge of the phase synchronization failure locally accessed if it does not exist, then follow the steps 9；
Step 8: the search the smallest intelligent rectifier bridge for the phase synchronization failure locally accessed only occur of serial number selects this intelligence whole
The phase synchronization signal of the non-faulting of bridge is flowed as synchronous working phase；
Step 9: the phase synchronization signal locally accessed for judging whether there is intelligent rectifier bridge is normal；
Step 9.1: the phase synchronization signal of intelligent rectifier bridge locally accessed is normal if it exists, thens follow the steps 10；
Step 9.2: the phase synchronization signal of intelligent rectifier bridge locally accessed is normal if it does not exist, thens follow the steps 11；
Step 10: the smallest intelligent rectifier bridge that there is the phase synchronization signal normally locally accessed of search serial number selects this intelligence
The phase synchronization signal of the non-faulting of energy rectifier bridge is as synchronous working phase；
Step 11: issuing the alarm of the synchronous failure of all intelligent rectifier bridges.
2. the intelligent rectifier bridge High redundancy synchronous method according to claim 1 based on FPGA and communication network, special
Sign is that the synchronous failure includes synchronization signal missing, synchronization signal broken string, and the synchronous working mutually selects regular specific
Include:
1) the A phase synchronization signal of the smallest intelligent rectifier bridge of the serial number without synchronous failure locally accessed, is selected；
2) when, the phase synchronization signal locally accessed synchronization failure occurs in each intelligent rectifier bridge, only occur if it exists single-phase same
The intelligent rectifier bridge of failure is walked, the identical of the smallest non-faulting for the intelligent rectifier bridge of phase synchronization failure only occur of serial number is selected
Signal is walked as synchronous working phase, otherwise selects the smallest intelligence that there is the phase synchronization signal normally locally accessed of serial number whole
Bridge is flowed, using the phase synchronization signal for the non-faulting of this intelligent rectifier bridge locally accessed as synchronous working phase.
3. the intelligent rectifier bridge High redundancy synchronous method according to claim 1 based on FPGA and communication network, special
Sign is that the three-phase synchronous signal that the FPGA of the intelligent rectifier bridge will be accessed locally is output to CPU, and selects according to CPU
Synchronous working mutually forward corresponding synchronous working phase signals to CPU.
4. according to claim 1 to 3 synchronous with the intelligent rectifier bridge High redundancy of communication network based on FPGA
Method, which is characterized in that the input signal of the FPGA of the intelligent rectifier bridge includes the three-phase synchronous signal locally accessed, also
It is identical as the three of this intelligence rectifier bridge all intelligent rectifier bridges in parallel including what is accessed in the form of real time data or input signal
Walk signal.
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| CN111313726A (en) * | 2020-03-17 | 2020-06-19 | 长江三峡能事达电气股份有限公司 | Current sharing method combining preset bias angle and shared synchronous signal |
| 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 |
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