CN103888189B - It is applicable to the single fiber looped network means of communication of extensive power electronic system - Google Patents
It is applicable to the single fiber looped network means of communication of extensive power electronic system Download PDFInfo
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- 239000000835 fiber Substances 0.000 title claims abstract description 32
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- 238000009432 framing Methods 0.000 claims description 4
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Abstract
The invention discloses a kind of single fiber looped network means of communication being applicable to extensive power electronic system, these single fiber looped network means of communication are by setting specific frame format, frame is made to include several fields, each field comprises a complete information, each sub-controller receives this frame according to field, and this information processed simultaneously receiving every field and be sent to next sub-controller, and after need not by the time receiving complete frame, each field in frame is processed by unification again.These single fiber looped network means of communication greatly reduce the propagation delay time between each sub-controller, thus keep the synchronism between each power module, and system cost is less, and reliability is high.
Description
Technical field
The invention belongs to the transmission field of digital information, be specifically related to one and be applicable to extensive power electronics system
The system single fiber looped network means of communication.
Background technology
Along with based on the combination of multiple standard modules or the large-capacity power electronics converter plant of multi-phase multi-level topology
Application more and more extensive, between multimode, data communication mode is wherein to consider more problem.Communication party
The field that formula relates to includes: parallel communications and serial communication.
Serial communication is a very important part in communication mode, especially in long-distance transmissions and complexity
In multicast communication.The reliable rapidity simplified and transmit of network is to select in extensive power electronic system to lead to
The standard of letter mode.Compared with parallel communications, serial communication network is more simplified, and connects more between module
Simply, reliability is higher.Looped network communication belongs to serial communication mode, is more suitable in power electronics multimode
System is applied.
Multimode combination of power electronics converter plant is widely used in power system.The information of intermodule passes
Mode of passing, as key link therein, is complexity and the key factor of reliability determining its control system
One of.In extensive power electronic system, owing to number of modules is numerous, traditional centralized parallel communications side
Formula can make number of fibers the hugest, and line is complicated, and reliability reduces.Therefore the big rule that module number is huge
, number of fibers is greatly reduced in mould power electronic system during employing looped network communication mode advantageously, network letter
Single, it is easy to install.
The single fiber looped network communication being applied to extensive power electronic system mainly solves two problems: loop leads to
News time and each intermodule synchronism.Hang Lijun et al. is in the high speed of entitled electrically-based electronic standard module
Intelligent communication network topology (Proceedings of the CSEE, 2006,26 (20): 50-56) proposes a kind of communication and prolongs
The looped network communication strategy of Shi Ji little, but each of which module has oneself intrinsic address, is unfavorable in standard
Change and apply in module；Sun Chi et al. is at the large-capacity power electronic system high speed fibre ring of entitled a kind of practicality
A kind of practicality proposed in net topology and agreement (Proceedings of the CSEE, 2012,32 (15): 63-73) thereof
Software controls the high speed fibre ring network topology structure of changeable data channel, although reduce whole high speed
Fiber annular controls the transmission delay of network and improves synchronization accuracy, but its transfer rate is limited to photoelectricity
Switching rate, and use the fpga chip and photoelectric conversion interface that speed is exceedingly fast, cost is the highest, is unfavorable for
Large-scale use.
Summary of the invention
For the deficiencies in the prior art, the invention provides one and be applicable to extensive power electronic system monochromatic light
The fine looped network means of communication, looped network communication time delay is little, and synchronism is good, relatively low to hardware requirement, is suitable on big rule
Mould electric power electronic module system is applied.
A kind of single fiber looped network means of communication being applicable to extensive power electronic system, described in be applicable to monochromatic light
Fine looped network includes master controller and several sub-controllers, and each sub-controller is by optical fiber and master controller string
Connection connects, and each sub-controller controls corresponding power module, the described single fiber looped network means of communication respectively
Including:
(1) master controller receives the control instruction of user's input, this control instruction is encapsulated framing, and leads to
Crossing optical fiber and be sent to first sub-controller, described frame includes several fields, respectively the initial segment, control
Device identification fields, sub-control Information sign section, several are with power module data segment one to one and sub-control information
Section；
Described frame is carried out processing and forwarding downwards by (2) first sub-controllers, until feeding back to main control
Device, each sub-controller receives each field successively according to the position of each field in frame, often receives one
I.e. the field received processed after entire fields and forward downwards.
In the present invention, the number of data segment and the number of power module are identical, and close for one_to_one corresponding therebetween
System.Heretofore described forwarding downwards is interpreted as being transmitted to according to this single fiber ring from current sub-controller
According to the next node (sub-controller in this single fiber looped network and master controller) of signal transmission direction in net.
From user from the beginning of master controller input control instruction, whole signal processing flow is as follows:
After the control instruction encapsulation framing that user is inputted, it is converted into optical signal through electro-optic conversion, then passes through
Optical fiber forwards downwards and (is directly forwarded to first sub-controller, passes through optical fiber along signal transmission direction first
Directly with master controller to the sub-controller being connected), and forwarded downwards by optical fiber.Each sub-controller receives
To the optical signal from optical fiber, first carry out opto-electronic conversion, the optical signal received be converted into the signal of telecommunication,
It is again converted to optical signal after treatment and sends a next sub-controller by optical fiber, until finally sending
To master controller, main controller receives after the optical signal sent by last sub-controller through opto-electronic conversion
The optical signal received is converted into the signal of telecommunication, and the applied analysis of this signal is all set up in conversion by master controller
After the signal of telecommunication on the basis of.
The present invention uses specific frame format, sets this frame and include several fields, make each field bag
Containing a complete information, each sub-controller receives this frame according to field, and receives every field on limit by turn
This information processed simultaneously and be sent to next sub-controller, and after need not by the time receiving complete frame
Each field in frame is processed by unification again.And at sub-controller, the field having been received by is processed
With when being sent to next sub-controller, this sub-controller is the most also accepting next field, i.e. each point
The reception of the controller field to receiving, process also forward downwards and receive other field sync and carry out,
So greatly reduce the propagation delay time between each sub-controller, improve transfer rate, and need not carve
The length of meaning condensed frame so that the content of transmission is abundanter.
Described the initial segment in order to the beginning of marker frames,
Described controller identification fields is used for representing each sub-controller position in looped network,
Described sub-control Information sign section is for recording the required details correspondence sub-control obtained of master controller
The numbering of device processed,
Described data segment is for recording the master controller control instruction to corresponding sub-controller, and accordingly
Sub-controller feed back to the status information of master controller,
Described sub-control message segment is for recording the required details obtained of master controller.
Sub-control Information sign section so that every time looped network communication only transmit the details of a power module,
So master controller can be understood the details of a certain possible breakdown module targetedly and need not transmit all
Module details, the figure place saving frame reduces looped network communication time.
Frame that the control instruction that master controller inputs according to user is formed when sending downwards, the data in this frame
Each master controller control instruction to each sub-controller is have recorded, when master controller receives feedback in Duan
During the information returned, in data segment, record is each sub-controller status information of feeding back to master controller.
The generally figure place setting each sub-controller corresponding of data segment is shorter, whether only transmits each sub-controller
The information of normal operation, so can shorten looped network communication time.
Sub-control message segment is the details of a certain sub-controller, the many bits generally comprised, user
The details of transmission particular power module, in order to inquire about the problem that this power module exists, the most specifically
Power module is the electric power mould that the status information obtained after a upper frame feeds back to master controller judges abnormal state
Block.So make up the deficiency that data segment figure place is shorter, simultaneously because only load a sub-controller information, make
The length of frame is unlikely to long.
The initial value 0 of described controller identification fields.
As preferably, described the initial segment includes 1 bit；
Described controller identification fields includes 4～7 bits；
Described sub-control Information sign section includes 4～7 bits；
Described data segment includes 2 bits；
Described sub-control message segment 12～36 bit.
Corresponding to the binary digit that a length of frame of frame comprises time, i.e. the length of frame comprised by frame two
The time of the figure place of system position and each correspondence determines, in the feelings that the time that each binary number is corresponding is fixing
Under condition, the number of bits comprised is the most, then frame length is the longest.For ensureing efficiency of transmission, frame comprises
The figure place of binary number is the fewest more good.For disclosure satisfy that application demand, it usually needs consider practical situations.
As long as start bit can distinguish starting of a frame.Under normal circumstances, during the master controller free time (no
When sending frame downwards), the signal sent downwards is high level (being 1), therefore for recognize a frame
Starting, i.e. wanted level saltus step, therefore arranging the initial segment is a bit 0.Controller mark
Each sub-controller can be carried out in the case of each sub-controller does not do and distinguishes on hardware in looped network by section
Numbering, it is simple to be applied in extensive power electronics standardized module system, its figure place is electric with the electric power of application
Sub-controller quantity in subsystem is relevant, for extensive power electronic system, generally includes 12～72
Sub-controller, corresponding controller mark should include 4～7 bits.Sub-control Information sign section and control
Device identification fields is consistent.Data segment acts primarily as transmission master controller and to the control instruction of each sub-controller and divides
Controller passes to the status information of the corresponding circuit module of master controller.Sub-control message segment, its figure place by
The detailed degree of the sub-controller information that user needs determines, such as information of voltage 12, current information 12
Position, if needing on-load voltage and current information simultaneously, needs 24, independent on-load voltage or current information
If only need 12, particular user determines according to the actual requirements.
According to each field in described frame after in described step (2), each sub-controller receives the initial segment
Position receives other fields successively and is handled as follows:
(2-1) controller identification fields is received, using controller identification fields as the numbering of this sub-controller, will control
Device identification fields processed adds 1, and loads after a initial segment to lower forwarding before described controller identification fields；
(2-2) receive sub-control Information sign section, this sub-control Information sign section is forwarded downwards, and by described
Sub-control Information sign section and the numbering comparison of this sub-controller, and extract this sub-controller pair according to comparison result
The relevant information of the power module answered, if unanimously, then described relevant information is the electricity that this sub-controller is corresponding
The details of power module and status information, otherwise, described relevant information is the electricity that this sub-controller is corresponding
The status information of power module；
(2-3) receive each data segment successively, after often receiving a data segment, judge that the data segment received is
No first data segment received for this sub-controller or last data segment, carried out according to judged result
Following operation:
If (a) first data segment, then perform this number by sub-controller time delay after extracting this data segment
According to section,
If (b) last data segment, then data segment is forwarded downwards, and by described relevant information
Status information forward downwards as a data segment,
C the data segment received otherwise, is forwarded by () directly down；
(2-4) receive sub-control message segment, the details in described relevant information are write this sub-control information
Forward under Duan Houxiang.
The initial segment represents the beginning of each frame, and the initial segment forwards downwards, and it is initial that next node receives
Additionally load during section actually transcoder controller identification fields.Each sub-controller receives, processes and send
The process of frame is identical, all carries out according to field.The information (frame) received is sent to by each sub-controller
The next node that is connected with this sub-control system in signal transmission direction in this single fiber looped network (sub-controller or
Master controller), if this sub-controller is last sub-controller (i.e. this sub-control system in signal transmission direction
Device is connected with master controller in signal transmission direction), the information received is sent to master controller, main
The frame received is not transmitted by controller, until master controller receive after complete frame this frame whole
Individual handling process terminates；Otherwise, continue to send next sub-controller.By utilizing frame during receiving
In sub-control Information sign section each sub-controller is numbered, it is achieved thereby that do not differentiating between each sub-control
On the basis of the structure of device processed for each sub-controller number, each sub-controller in looped network address by sub-control
Information sign position uniquely determines, and is not necessary for each sub-controller arrangement address bit, is suitable at electric power electricity
Substandard module is applied.Additionally, with it, make that each sub-controller receives relative to this
The effective information of sub-controller (include controller identification fields, sub-control Information sign section and with this sub-controller pair
The data segment answered) it is respectively positioned on before frame.
Described step (2-2) is gathered the relevant information of corresponding power module by sub-controller, owing to inciting somebody to action
The relevant information collected is written in frame corresponding position (field), it is therefore desirable to wait corresponding word to be sent
Section, the most now, the relevant information collected is cached by sub-controller, and the number in updating cache in real time
According to so that it is it is always the relevant information of current block, directly carries from caching when starting to send respective field
Take the relevant information (details or status information) of correspondence and write corresponding field.
The status information of this sub-controller is loaded as a data item by (b) of described step (2-3),
For the next node of this sub-control, under second data segment that current sub-controller receives is exactly
First data segment that one node receives, its last data segment that will occur is then current point
Data item that controller newly loads (status information of the power module that i.e. current sub-controller is corresponding as number
According to item), recursion the most one by one, can obtain, last sub-controller feeds back in the frame of master controller each
Data item is the status information of the power module of correspondence.For improving the transmission of controller identification fields further
Speed, as preferably, connects according to binary digit when receiving controller identification fields in described step (2-1)
Receive and process:
(2-11) receive the bit in described controller identification fields, this binary digit is delayed
Deposit the relevant position to this sub-controller, this binary digit is added 1, and by carry caching to sub-controller
Relevant position, loaded after a start bit to lower forwarding before the binary digit after adding 1 process；
(2-11) other binary digits are received, for other any one binary digits received, should
Binary digit caching is in sub-controller, and after being positioned at bit, this binary digit is added
The carry of the relevant position cached to sub-controller, by the relevant position in carry caching to sub-controller,
And will forward downwards plus the binary digit after carry.
Described sub-controller is 12～72.
The advantage using serial communication mode in contrast to communication modes in parallel is that fiber count is greatly reduced
Amount, cost-effective, and make system simpler, and in extensive power electronic system, number of modules is more, and one
As mostly be 3 phase structures, when number of modules reaches some, use serial communication mode advantage be just able to body
Existing, typically when in system, single-phase module number is more than 12, employing serial communication can save more optical fiber, reduces system
System complexity, simultaneously in order to ensure time delay and the control performance of transmission, in looped network, sub-controller quantity controls
12～72.
Described details are any one or two kinds in the information of voltage of power module and current information
Combination.
Details need to set according to user's request and control, each electricity in same power electronic system
Details kind corresponding to power module is identical, is all current information, or is all information of voltage, or is all
The combination of voltage and current information.
Described status information is used for representing power module whether normal operation.
Status information is exactly the most normal mark of module, by some information of detection module, it is judged that
Power module is the most normal.The status information of each power module is 2 binary digits, in this status information
In this power module of each binary digit, a brachium pontis (power module has upper brachium pontis and lower brachium pontis) is run
State.When corresponding brachium pontis normal operation, this binary digit 0, the status information in season that breaks down is 1.
Master controller is by detecting the ruuning situation of each power module of state information acquisition corresponding to each power module.
If status information is 00, this power module normal operation is described, otherwise, exists when this power module runs
Fault.
In described step (2-3), the duration of the time delay of sub-controller is according to the numbering of this sub-controller and sub-control system
The sum of device determines, delay duration T of the sub-controller of the most numbered llAccording to formula:
Tl=(n-l-1) × t
It is calculated, wherein l=0,1 ... n, n are the sum of power module, and t is adjacent two sub-controllers
Between time delay.
Determine the delay duration of each sub-controller according to above method, delay duration uses adjacent two sub-controls
Time delay between device processed, as basic time delay unit, more early receives the delay duration of sub-controller of information more
Long, using the time delay between adjacent two sub-controllers as basic time delay unit, therefore last sub-control system
Device is 0(not time delay) first delay time be the longest.After being processed by above-mentioned group delay, each sub-control system
Device is essentially identical for the time delay of master controller, and each sub-controller is Complete Synchronization the most in theory.Real
In the application of border, synchronism between each sub-controller depends on the survey of time delay t between adjacent two sub-controllers
Amount accuracy.
The single fiber looped network means of communication being suitable for extensive power electronic system of the present invention greatly reduce respectively
Propagation delay time between individual sub-controller, thus ensure that each power module in extensive power electronic system
Between synchronism, and system cost is less, and reliability is high.
Detailed description of the invention
In order to more specifically describe the present invention, the present invention is described in detail for embodiment in detail below.
Extensive power electronic system in the present embodiment includes a master controller, 72 sub-controllers and 72
Individual power module, each sub-controller is connected in series with master controller by optical fiber, and each sub-controller is respectively
Controlling corresponding power module, the control chip that sub-controller uses is the FPGA of altera corp, and model is
EP3C5F256, the optic fiber converter model receiving and sending is respectively AFBR-2624Z and AFBR-1624Z,
Its maximum operation frequency is 50MHZ.Each sub-controller mainly includes that control chip and rear class driving process electricity
Road forms, and it is to carry out adaptation with power model below that driving processes circuit.In order to improve control performance,
Master controller typically uses the process chip that performance is higher, it is simple to carry out more complicated computing, but controller is tied
Structure can be identical with sub-controller.In the present embodiment, the master controller of employing and sub-controller are structurally
Identical, simply the program of main operation controller is different from sub-controller.
A kind of single fiber looped network means of communication being applicable to extensive power electronic system, including:
(1) master controller receives the control instruction of user's input, this control instruction is encapsulated framing, and leads to
Cross optical fiber and be sent to first sub-controller.
In the present embodiment, this frame includes 5 fields, respectively the initial segment, controller identification fields, sub-control information
Identification fields, 72 and power module data segment one to one and sub-control message segment.The initial segment is in order to marker frames
Beginning, including 1 bit.Controller identification fields is for representing that each sub-controller is in looped network
Position, the initial value 0(decimal system), including 7 bits (i.e. initial value is 0000000).Sub-control is believed
Breath identification fields is for recording the numbering of the required details correspondence sub-controller obtained of master controller, including 7
Bit.Data segment is for recording the master controller control instruction to corresponding power module, Yi Jixiang
The sub-controller answered feeds back to the status information of master controller, including 2 bits, a sub-controller
A corresponding data segment.Sub-control message segment is for recording the required details obtained of master controller, including 12
Bit, original state is empty.
In the present embodiment, one has 72 data segments, respectively the record master controller control to each sub-controller
System instruction, sub-control Information sign section sets according to user's request, and in the present embodiment, user needs to obtain the 8th
The details of the power module that sub-controller is corresponding, therefore set sub-control Information sign section as decimal number as 7,
Use 7 bits to represent and be 0000111.
Described frame is carried out processing and forwarding downwards by (2) first sub-controllers, until feeding back to main control
Device, each sub-controller receives each field successively according to the position of each field in frame, often receives one
I.e. the field received processed after entire fields and forward downwards.Wherein, each sub-controller receives
Receive other fields successively according to the position of each field in described frame and be handled as follows after the initial segment:
(2-1) controller identification fields is received, using controller identification fields as the numbering of this sub-controller, will control
Device identification fields processed adds 1, and loads before this controller identification fields after a initial segment to lower forwarding, specific as follows:
(2-11) receive the bit in described controller identification fields, this binary digit is delayed
Deposit the relevant position to this sub-controller, this binary digit is added 1, and by carry caching to sub-controller
Relevant position, loaded after a start bit to lower forwarding before the binary digit after adding 1 process；
(2-12) other binary digits are received, for other any one binary digits received, should
Binary digit caching is in sub-controller, and after being positioned at bit, this binary digit is added
The carry of the relevant position cached to sub-controller, by the relevant position in carry caching to sub-controller,
And will forward downwards plus the binary digit after carry.
(2-2) receive sub-control Information sign section, this sub-control Information sign section is forwarded downwards, and by described
Sub-control Information sign section and the numbering comparison of this sub-controller, and extract this sub-controller pair according to comparison result
The relevant information of the power module answered, if unanimously, then described relevant information is the electricity that this sub-controller is corresponding
The details of power module and status information, otherwise, described relevant information is the electricity that this sub-controller is corresponding
The status information of power module.The relevant information of power module is details and status information, remaining electric power
The relevant information of module is status information.Wherein the details in relevant information are the voltage of power module
Information, status information be each power module for representing power module whether normal operation, use 2
During binary number representation, this status information is to represent this power module normal operation when 00, otherwise, then runs
There is fault.
In the present embodiment, the relevant information for power module corresponding to the sub-controller of numbered 0000111 is
Details and status information, the relevant information of remaining power module all only includes status information.
(2-3) receive each data segment successively, after often receiving a data segment, judge that the data segment received is
No first data segment received for this sub-controller or last data segment, carried out according to judged result
Following operation:
If (a) first data segment, then perform this number by sub-controller time delay after extracting this data segment
According to section, the duration of the time delay of sub-controller determines according to the numbering of this sub-controller and the sum of sub-controller,
If the wherein numbered l of this sub-controller, then corresponding delay duration TlAccording to formula:
Tl=(n-l-1) × t
It is calculated, wherein l=0,1 ... n, n are the sum of power module, and t is adjacent two sub-controllers
Between time delay.(n=72 in the present embodiment, through surveying time delay t=95ns between adjacent two sub-controllers.
If (b) last data segment, then data segment is forwarded downwards, and by described relevant information
Status information forward downwards as a data segment,
C the data segment received otherwise, is forwarded by () directly down；
(2-4) receive sub-control message segment, the details in described relevant information are write this sub-control information
Forward under Duan Houxiang.
The extensive power electronic system of the present embodiment often sends and thinks that the time that binary number needs is
25ns, therefore, when using the single fiber looped network means of communication of the present embodiment, first sub-controller is to extracting
Time a length of (72-0-1) × 95ns=6.745 μ s of corresponding data segment time delay, prolonging of other each sub-controllers
Shi Shichang is the most available according to its numbering calculating, last sub-controller not time delay.Use the present embodiment
In the single fiber looped network means of communication, carry out group delay, first sub-controller and last sub-control after time delay
Device processed there is no time delay in theory.Due to by Time delay measurement precision (between the most adjacent two sub-controllers time
Prolong the certainty of measurement of t=95ns) impact be 400ns, basic synchronization, i.e. think the extensive electricity of the present embodiment
Each sub-controller basic synchronization in power electronic system.Last sub-controller receive control instruction relative to
The time delay that master controller sends is 7.265 μ s.In view of factors such as errors, 10 μ s also should be less than.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in
Change or replacement, all should contain within protection scope of the present invention.
Claims (9)
1. be applicable to single fiber looped network means of communication for extensive power electronic system, described in be applicable to list
Optical fiber ring network includes master controller and several sub-controllers, and each sub-controller passes through optical fiber and master controller
Being connected in series, each sub-controller controls corresponding power module respectively, it is characterised in that described monochromatic light
The fine looped network means of communication include:
(1) master controller receives the control instruction of user's input, this control instruction is encapsulated framing, and leads to
Crossing optical fiber and be sent to first sub-controller, described frame includes several fields, respectively the initial segment, control
Device identification fields, sub-control Information sign section, several are with power module data segment one to one and sub-control information
Section；
Described frame is carried out processing and forwarding downwards by (2) first sub-controllers, until feeding back to main control
Device, each sub-controller receives each field successively according to the position of each field in frame, often receives one
I.e. the field received processed after entire fields and forward downwards；
According to each field in described frame after in described step (2), each sub-controller receives the initial segment
Position receives other fields successively and is handled as follows:
(2-1) controller identification fields is received, using controller identification fields as the numbering of this sub-controller, will control
Device identification fields processed adds 1, and loads after a initial segment to lower forwarding before described controller identification fields；
(2-2) receive sub-control Information sign section, this sub-control Information sign section is forwarded downwards, and by described
Sub-control Information sign section and the numbering comparison of this sub-controller, and extract this sub-controller pair according to comparison result
The relevant information of the power module answered, if unanimously, then described relevant information is the electricity that this sub-controller is corresponding
The details of power module and status information, otherwise, described relevant information is the electricity that this sub-controller is corresponding
The status information of power module；
(2-3) receive each data segment successively, after often receiving a data segment, judge that the data segment received is
No first data segment received for this sub-controller or last data segment, carried out according to judged result
Following operation:
If (a) first data segment, then perform this number by sub-controller time delay after extracting this data segment
According to section,
If (b) last data segment, then data segment is forwarded downwards, and by described relevant information
Status information forward downwards as a data segment,
C the data segment received otherwise, is forwarded by () directly down；
(2-4) receive sub-control message segment, the details in described relevant information are write this sub-control information
Forward under Duan Houxiang.
It is applicable to the single fiber looped network communication side of extensive power electronic system the most as claimed in claim 1
Method, it is characterised in that described the initial segment in order to the beginning of marker frames,
Described controller identification fields is used for representing each sub-controller position in looped network,
Described sub-control Information sign section is for recording the required details correspondence sub-control obtained of master controller
The numbering of device processed,
Described data segment is for recording the master controller control instruction to corresponding sub-controller, and accordingly
Sub-controller feed back to the status information of master controller,
Described sub-control message segment is for recording the required details obtained of master controller.
It is applicable to the single fiber looped network communication side of extensive power electronic system the most as claimed in claim 2
Method, it is characterised in that the initial value of described controller identification fields is 0.
It is applicable to the single fiber looped network communication side of extensive power electronic system the most as claimed in claim 3
Method, it is characterised in that described the initial segment includes 1 bit；
Described controller identification fields includes 4～7 bits；
Described sub-control Information sign section includes 4～7 bits；
Described data segment includes 2 bits；
Described sub-control message segment 12～36 bit.
It is applicable to the single fiber looped network communication side of extensive power electronic system the most as claimed in claim 1
Method, it is characterised in that connect according to binary digit when receiving controller identification fields in described step (2-1)
Receive and process:
(2-11) receive the bit in described controller identification fields, this binary digit is delayed
Deposit the relevant position to this sub-controller, this binary digit is added 1, and by carry caching to sub-controller
Relevant position, loaded after a start bit to lower forwarding before the binary digit after adding 1 process；
(2-12) other binary digits are received, for other any one binary digits received, should
Binary digit caching is in sub-controller, and after being positioned at bit, this binary digit is added
The carry of the relevant position cached to sub-controller, by the relevant position in carry caching to sub-controller,
And will forward downwards plus the binary digit after carry.
It is applicable to the single fiber looped network communication side of extensive power electronic system the most as claimed in claim 5
Method, it is characterised in that described sub-controller is 12～72.
It is applicable to the single fiber looped network means of communication of extensive power electronic system the most as claimed in claim 6,
It is characterized in that, described details are any one in the information of voltage of power module and current information
Or the combination of two kinds.
It is applicable to the single fiber looped network communication side of extensive power electronic system the most as claimed in claim 7
Method, it is characterised in that described status information is used for representing power module whether normal operation.
It is applicable to the single fiber looped network communication of extensive power electronic system the most as described in claim 8
Method, it is characterised in that in described step (2-3), the duration of the time delay of sub-controller is according to this sub-controller
Numbering and the sum of sub-controller determine, delay duration T of the sub-controller of the most numbered llAccording to public affairs
Formula:
Tl=(n-l-1) × t
It is calculated, wherein l=0,1 ... n, n are the sum of power module, and t is adjacent two sub-controllers
Between time delay.
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| CN110932568A (en) * | 2019-11-19 | 2020-03-27 | 广东安朴电力技术有限公司 | Communication structure and communication method of control module and submodule based on MMC |
| CN114826821B (en) * | 2022-03-25 | 2023-10-13 | 西安奇点能源股份有限公司 | Communication method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852260A (en) * | 2006-04-14 | 2006-10-25 | 杭州华为三康技术有限公司 | Method and apparatus for over-ring message retransmitting in elastic grouped ring network |
| CN101425979A (en) * | 2008-12-10 | 2009-05-06 | 中兴通讯股份有限公司 | Data packet forwarding method for Ether ring network |
-
2014
- 2014-03-03 CN CN201410073643.9A patent/CN103888189B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852260A (en) * | 2006-04-14 | 2006-10-25 | 杭州华为三康技术有限公司 | Method and apparatus for over-ring message retransmitting in elastic grouped ring network |
| CN101425979A (en) * | 2008-12-10 | 2009-05-06 | 中兴通讯股份有限公司 | Data packet forwarding method for Ether ring network |
Non-Patent Citations (3)
| Title |
|---|
| 《一种实用的大容量电力电子系统高速光纤环网拓扑及其协议》;孙驰;《中国电机工程学报》;20120525;第32卷(第15期);全文 * |
| 《基于电力电子标准模块的高速智能通讯网络拓扑》;杭丽君;《中国电机工程学报》;20061031;第26卷(第20期);正文第7-9栏,图2,4,表1 * |
| 《基于电力电子网络的变流系统研究》;杭丽君;《中国博士学位论文全文数据库 信息科技辑》;20090715(第07期);全文 * |
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